Hayter Mowers Lawn Mower T424 User Guide

T424  
MOWER  
CODE 953C  
OPERATOR'S MANUAL  
THIS MANUAL SHOULD BE REGARDED AS PART OF THE MACHINE, AS  
IT GIVES ESSENTIAL INFORMATION REGARDING MACHINE SAFETY,  
OPERATION, MAINTENANCE AND SPECIFICATIONS.  
English Version  
FROM SERIAL NO: 953C001001  
Issue: 01.10.04  
MANUAL PART NO: 953910 (REV.0.)  
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ATTENTION  
THIS SYMBOL MEANS  
BE ALERT!  
YOUR SAFETY IS INVOLVED  
READ THIS MANUAL BEFORE USING THE T424 MOWER.  
IT IS ESSENTIAL THAT OPERATORS STUDY IT FOR THEIR OWN SAFETY.  
ALL OPERATORS SHOULD SEEK AND OBTAIN PROFESSIONAL AND  
PRACTICAL INSTRUCTIONS ON THE SAFE USE OF THE MOWER. THESE  
SERVICES ARE AVAILABLE THROUGH HAYTER LIMITED OR HAYTER APPROVED  
COMMERCIAL DEALERS.  
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1.4  
CONTENTS  
1.4  
Page No.  
CONTENTS  
1.6 - 1.14  
1.6  
SAFETY PRECAUTIONS.  
Training.  
1.6 - 1.7  
1.7 - 1.9  
1.10  
Preparation.  
Operation.  
Handling and storage of fluids.  
Maintenance and storage.  
Decals.  
1.11  
1.12 - 1.14  
1.15 - 1.16  
1.15  
EC CONFORMITY INFORMATION.  
Noise levels.  
1.16  
EC Declaration of Conformity.  
INTRODUCTION.  
SPECIFICATIONS.  
Engine.  
1.17  
1.18 - 1.24  
1.18  
1.19  
Transmission system.  
Cutterhead drive system.  
Cutterhead lift system and steering.  
Hydraulic system.  
1.19  
1.20  
1.20  
1.21  
Vehicle specifications.  
Operator controls.  
1.22  
1.22  
Instrumentation.  
1.23  
Weight and dimensions.  
1.23  
Recommended lubricants and hydraulic fluids.  
Cutterheads.  
1.24  
1.25 - 1.44  
1.25  
OPERATING THE MOWER.  
Safety notice.  
1.25  
Operator presence controls.  
Identification of controls.  
Braking system.  
1.26  
1.27  
1.27  
Throttle control.  
1.27  
Travel.  
1.28  
Work/Transport modes.  
Transport latches.  
1.28  
1.29  
Differential lock.  
1.29  
Travel control pedals.  
Forward travel speed backstop lever.  
Operator platform latching mechanism.  
Adjustable steering column.  
Operator seat.  
1.30  
1.30  
1.31  
1.32  
1.33  
Warning systems.  
1.33  
Audible warning horn.  
Ignition key.  
1.34  
1.34  
Engine pre-heat indicator light.  
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1.5  
1.5  
CONTENTS  
CONTENTS  
Continued.  
Page No.  
Fuel level gauge.  
Hourmeter.  
1.34  
1.34  
Transmission neutral indicator light.  
Cutterhead drive switch indicator light.  
Parking brake indicator light.  
1.35  
1.35  
1.35  
Hydraulic return filter indicator light.  
Hydraulic transmission filter indicator light.  
1.35  
1.35  
Transmission system ‘Work’ mode indicator light.  
Cutterhead position control.  
Dual lift configuration control.  
Cutterhead drive engagement.  
Weight transfer/traction assistance.  
Starting the engine.  
1.35  
1.36  
1.36  
1.37  
1.38  
1.38 - 1.39  
1.39  
Stopping the engine.  
General operating hints.  
1.40  
Unblocking cutting cylinders.  
Cutterhead general information.  
MK3 200mm Fixed Cutterhead.  
MK3 254mm Fixed Cutterhead.  
MK3 200mm Floating Cutterhead.  
MAINTENANCE.  
1.41  
1.42  
1.43  
1.43  
1.44  
1.45 - 1.64  
1.45 - 1.46  
1.47  
General safety and good practice.  
Engine.  
Running in period.  
1.47  
Running in period - at first 50 hours.  
Daily and before use.  
1.47 - 1.48  
1.49 - 1.52  
1.53 - 1.54  
1.55  
Every 50 hours.  
Every 250 hours.  
Every 500 hours.  
1.56 - 1.58  
1.59  
Cutterhead cylinder to bottom blade adjustment.  
Cutterhead backlapping.  
1.60  
Cutterhead grinding.  
1.61  
Cutterhead bottom blade replacement.  
Raising the mower off the ground.  
Towing the mower.  
1.61  
1.62  
1.63 - 1.64  
1.65 - 1.67  
1.68 - 1.74  
1.75 - 1.78  
1.79 - 1.80  
1.81 - 1.82  
1.83  
GRASS CUTTING FAULTS.  
TROUBLE SHOOTING.  
ELECTRICAL CIRCUIT DIAGRAM.  
TRANSMISSION/BRAKE HYDRAULIC CIRCUIT.  
HYDRAULIC CIRCUIT DIAGRAM.  
WARRANTY.  
NOTES.  
1.84  
CUSTOMER INFORMATION.  
1.85  
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1.6  
SAFETY PRECAUTIONS  
1.6  
READ THIS MANUAL BEFORE USING THE T424 MOWER, IT IS ESSENTIAL THAT  
OPERATORS STUDY IT FOR THEIR OWN SAFETY.  
THE FOLLOWING PRECAUTIONS MUST BE TAKEN TO HELP PREVENT ACCIDENTS.  
A CAREFUL OPERATOR WHO USES COMMON SENSE IS THE SAFEST OPERATOR.  
TRAINING  
Read the instructions carefully. Be familiar with the controls and the proper use of the equipment. Learn  
how to stop the mower quickly in an emergency.  
Never allow children or people unfamiliar with these instructions to use the mower. Local regulations  
may restrict the age of the operator.  
Never mow while people, especially children, or pets are nearby.  
Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or  
their property.  
Do not carry passengers.  
All drivers should seek and obtain professional and practical instruction. Such instruction should emphasise:  
The need for care and concentration when working with this machine.  
-
-
The need to slow down when making tight turning manoeuvres. Failure to take adequate care can affect  
stability leading to loss of control of the machine particularly when operating in transport mode.  
-
Control of a ride-on-machine sliding on a slope will not be regained by application of the brake.  
The main reasons for loss of control are:  
- Insufficient wheel grip.  
- Being driven too fast.  
- Inadequate braking.  
- The type of machine is unsuitable for the task.  
- Lack of awareness of the effect of ground conditions, especially slopes.  
- Incorrect load distribution.  
PREPARATION  
Check that the machine complies with all applicable regulations, including those in force when used on  
the public highway.  
While mowing, always wear substantial footwear and long trousers. Do not operate the equipment when  
barefoot or wearing open sandals. Eye protection should be worn.  
Thoroughly inspect the area where the equipment is to be used and remove all objects which can be  
thrown by the machine.  
Never operate the machine without first checking that the operator platform latching mechanism is fully  
engaged and in good working order, refer - ‘OPERATOR PLATFORM LATCHING MECHANISM’.  
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1.7  
1.7  
SAFETY PRECAUTIONS  
PREPARATION  
Continued.  
Ensure that the cutterheads are fully raised with the latches and safety locks engaged in position before  
transporting the mower.  
Replace faulty silencers.  
Check the condition of the tyres and ensure that they are inflated to the correct pressures, refer -  
SPECIFICATIONS.  
This is particularly important if the machine is to be taken on the public highway.  
Check that the mower is in good working order, paying particular attention to the brakes and steering.  
Also ensure that the forward/reverse speed control pedals move freely to neutral when released.  
Before use, always visually inspect to see that the blades, blade bolts and cutting cylinders are not worn  
or damaged. Replace worn or damaged components.  
Check the mower hydraulic system, particularly the hydraulic hoses, fittings and hose supports. Worn,  
crushed or damaged hoses can burst, with risks to health and damage to the machine and surrounding  
turf areas.  
After refuelling and adding oil to the hydraulic oil tank ensure that the caps are replaced securely.  
Check that all linkages, connections and pivot nuts are secure and that wheel nuts are torqued correctly,  
refer - SPECIFICATIONS.  
Before operating the machine, ensure that there are no foreign objects or liquids on the platform or ped-  
als - ALWAYS KEEP THE OPERATOR PLATFORM CLEAR/CLEAN.  
OPERATION  
Do not operate the engine in a confined space where dangerous carbon monoxide fumes can collect.  
Mow only in daylight or in good artificial light.  
Before attempting to start the engine, engage the parking brake, disengage the cutterhead drive system  
and ensure that the forward/reverse speed controls are in the neutral position.  
Never operate the machine without first checking that the operator platform latching mechanism is fully  
engaged and in good working order, refer - OPERATOR PLATFORM LATCHING MECHANISM.  
Stored energy devices are charged when the outer wing units are in the transport position. Always oper-  
ate the relevant lift controls to provide hydraulic support for the wing units suspensions before attempt-  
ing to release the transport latches.  
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1.8  
SAFETY PRECAUTIONS  
1.8  
OPERATION  
Continued.  
Do not use on a slope of more than 19 degrees. Care should be taken when using the mower on any slope  
where ground conditions are such that there may be a risk of the mower rolling over. The requirements  
of SI 1998 No. 2306 “Provision and Use of Work Equipment Regulations” should be considered.  
R.O.P.S (Roll Over Protective Structures) are available, refer to INTRODUCTION - Optional Extras.  
Stability angles given are maximum figures and are for guidance only. Particular conditions such as wet  
grass or uneven ground may not permit safe operation on the slope limits stated.  
Remember there is no such thing as a "safe" slope. Travel on grass slopes requires particular care. To  
guard against overturning or loss of traction when travelling or mowing on a slope:  
-
-
-
-
-
-
-
-
Exercise extreme care when changing direction on a slope.  
Do not stop or start suddenly.  
Engage drive slowly.  
Keep machine speed low.  
Avoid tight turns.  
Stay alert for humps, hollows and other hidden hazards.  
Keep away from sharp inclines and steep drops.  
A thorough risk assessment should be carried out by a competent  
person before travelling or mowing on a slope.  
Never park on a slope.  
Ground level  
3DA176  
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1.9  
1.9  
SAFETY PRECAUTIONS  
OPERATION  
Continued.  
Watch out for traffic when crossing or near roadways.  
Use extreme caution when reversing.  
Disengage the cutterhead drive system before crossing surfaces other than grass.  
When using the machine, never direct the discharge of material towards bystanders or allow anyone  
near the machine while in operation.  
Never operate the mower with defective guards, shields or without safety protective devices in place  
and in good working order.  
Do not change the engine governor settings or overspeed the engine. Operating an engine at excessive  
speed may increase the risk of personal injury.  
Before leaving the operator's position:  
- Disengage the drive to the cutterheads.  
- Lift cutterheads to the transport position and securely lock the safety latches  
or alternatively lower cutterheads to the ground.  
- Change into neutral and set the parking brake.  
- Stop the engine and remove the ignition key.  
Engage the parking brake, disengage the drive to the cutterheads, stop the engine and remove ignition  
key :  
- Before releasing blockages.  
- Before checking, cleaning or working on the mower.  
- After striking a foreign object. Inspect the mower for damage and make  
repairs before restarting and operating the equipment.  
- If the machine starts to vibrate abnormally ( check immediately ).  
- Before refuelling.  
- Before making cutterhead adjustments.  
Disengage the drive to the cutterheads when transporting or not in use.  
Reduce the throttle setting during engine run - out.  
Never work on the mower when the engine is running.  
Always keep feet and hands well away from the cutting cylinders when making adjustments.  
Never operate the mower without first checking that the operator platform is securely latched.  
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1.10  
SAFETY PRECAUTIONS  
1.10  
HANDLING AND STORAGE OF FLUIDS  
Hydraulic Oil  
-
-
-
-
-
Avoid contact with eyes and prolonged contact with skin.  
Protective goggles should be worn when pouring.  
Use of gloves or barrier cream is recommended.  
Wash hands thoroughly after contact.  
Store under cover, away from heat and sources of ignition.  
Diesel Oil  
-
-
-
-
Avoid skin and eye contact.  
Wear impervious gloves when regular contact is likely and goggles when there is risk of splashing.  
Wash hands thoroughly after contact.  
Store in a cool dry well ventilated place away from heat and sources of ignition, in vessels specifi-  
cally designed for storing fuel oils.  
Lubricating Oil  
-
-
-
-
Avoid skin and eye contact.  
Wear impervious gloves when regular contact is likely and goggles when there is risk of splashing.  
Wash hands thoroughly after contact.  
Store in a cool dry well ventilated place away from heat and sources of ignition.  
Anti- Freeze  
-
-
-
Keep away from heat, sparks, and flames.  
Avoid skin and eye contact and breathing vapours.  
Store in a closed container in a cool dry well ventilated area.  
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1.11  
1.11  
SAFETY PRECAUTIONS  
MAINTENANCE AND STORAGE  
Take care when rotating a cutting cylinder as this can cause other cylinders to rotate.  
When the machine is to be parked, stored or left unattended, lift the cutterheads to the transport position  
and engage the safety locks or lower the cutterheads to the ground.  
Keep all nuts, bolts, and screws tight to be sure the equipment is in safe working condition.  
Allow the engine to cool before storing in any enclosure.  
To reduce the risk of fire, keep the engine, silencer, fuel tank and battery compartment free of grass,  
leaves or excessive grease.  
Frequently check fuel lines and fittings for cracks or leaks and replace if necessary.  
Replace worn or damaged parts for safety.  
Ensure that all safety decals are properly secured and in good condition.  
If the fuel tank has to be drained, this should be done outdoors.  
Be careful during adjustment of the machine to prevent entrapment of the fingers between moving blades  
and fixed parts of the machine.  
Never attempt to disconnect any part of the hydraulic system before de-pressurisation. This may be  
achieved by lowering all cutterheads to the ground, stopping the engine and removing the ignition key.  
Avoid skin or eye contact with hydraulic or diesel fluids. Wear protective clothing.  
Leaking fluids under pressure can penetrate the skin or eyes, causing serious injury.  
Always use a piece of cardboard or paper when searching for leaks.  
Health and Safety at Work Act:  
In accordance with section 6 of the Health and Safety at Work Act 1974, the T424 Turf Mower has been  
designed and constructed so that, in so far as is reasonably practical, it will not endanger the safety and  
health of those working with it. This is, however, subject to the machine being properly used and  
maintained according to the conditions stated in this manual and elsewhere, which have been found  
necessary as a result of the research and testing of Hayter Limited.  
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1.12  
SAFETY PRECAUTIONS  
1.12  
DECALS  
b
d
e
c
a
Decal - Control Panel Part No: 994912  
Location: Control Panel.  
a) Ignition Switch  
b) Engine Speed - Slow  
c) Engine Speed - Fast  
d) Parking Brake - Engage  
h) Cutters - Off  
f
i) Cutters - Forward  
j) Horn  
k) Cutters - Lift  
g
h
e) Parking Brake - Disengage l) Cutters - Hold  
f) Weight Transfer - Control m)Cutters - Drop/Float  
i
m
g) Cutters - Reverse  
n) Hour Meter  
k
j
l
n
b
c
a
Decal - Inclines Part No: 924857 (1)  
Location: Centre Platform.  
a) Warning - Travel slowly when turning and on slopes  
b) Warning - Maximum slope without ROPS  
c) Warning - Seat belt must be worn with a ROPS fitted.  
d) Caution  
e) Read operators manual  
0 - 19°  
19°+  
f) Stop engine/Remove ignition key before servicing or  
maintenance  
g) Beware of flying objects  
h) Keep bystanders clear  
d
e
h
g
f
a
b
Decal - Danger Latch Part No: 70-13-077  
Location: LH / RH / Centre Arms  
a) Caution  
b) Stop engine/Remove ignition key before releasing or  
operating safety latches  
Decal - Diesel Part No: 70-13-078  
Location: Fuel Tank  
Diesel fuel only  
a
b
IMPOR TANT / WICHTIG / BELANGRIJK  
Decal - Transmission Oil Part No: 70-13-071  
Location: Oil Filler Bracket mounted behind Fuel Tank.  
a) Transmission oil  
BEFORE USE : FILL MACHINE WITH RECOM-  
MENDED OIL TO CORRECT LEVEL. FAILURE  
T
O
DOSO WILL CAUSE SERIOUS DAMAGEANDIN-  
VALIDATE WARRANTY .  
AVANT L'UTILISA TION : IL EST IMPERATIF DE  
REMPLIR LA TONDEUSE AVEC UNE HUILE  
SPECIFIEE AU NIVEAU EXACT POUR NE PAS  
L'ENDOMMAGERSERIEUSEMENT ET ANNULER  
LAGARANTIE.  
b) Read and understand the operators manual.  
VOR DEM GEBRAUCH: FÜLLEN SIE DIE  
MASCHINE MIT EMPFOHLENEM ÖL NACH,BIS  
AUF DEN RICHTIGEN ST AND.  
DIE  
NICHTBEACHTUNG DIESER INSTRUKTIONEN  
KANN ZU ERNSTHAFTEN SCHADEN F ÜHREN  
UNDDABEI WIRD DIE GARANTIE UNGÜLTIG.  
VOOR GEBRUIK: VUL MACHINE MET  
VORRGESCHREVEN OLIE TOT HET JUISTE  
NIVEAU. HET NIET VOLGEN VAN DEZE  
INSTRUKTIE LEIDT  
T
OT ERNSTIGE SCHADE EN  
VER VAL VANDE GARANTIE.  
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1.13  
1.13  
SAFETY PRECAUTIONS  
DECALS  
Continued.  
Decal - Jacking / Support Point  
Part No: 70-13-072  
Location: Front Axle - 2 Points  
Rear Towing Eye  
Jacking and support point  
Decal - Engine Fan / Radiator  
Part No: 70-13-073  
Location: Engine Fan Cowl  
a) Danger of severing fingers  
b) Caution  
ONLY REMOVE RADIATOR CAP WHEN ENGINE IS COOL.  
IL FAUT TOUJOURSATTENDRE LE REFROIDISSEMENT DU MOTEUR  
AVANT DE RETIRER LE BOUCHON DU RADIATEUR.  
VERWIJDER DE RADIATORDOP PAS NADAT DE MOTOR ISAFGEKOELD.  
HEIZKORPERDECKELENTFERNEN ERST WENN DER MOTOR KUHLIST.  
70-13-073 REV (.0.)  
a
c
b
c) Warning - Hot surfaces  
Decal - Hayter and Royal Warrant  
Part No: 410087  
Location: Platform, Front  
R
Decal - Side LH  
Part No: 953907  
Location: Engine Cover LH/RH Side  
Decal - Tyre Pressure  
Part No. 950832  
Location: LH/RH Chassis - 4 Places  
a) Mowing  
b) Road travel  
a
b
953876 REV.(0)  
Decal - Diff Lock / Control Pedal  
Part No: 953876  
Location: Centre Platform  
a
a) Differential lock  
R
F
b) Depress to engage diff-lock  
c) Release to dis-engage diff-lock  
d) Reverse speed - directional control  
e) Forward speed - directional control  
e
{
{
b
{
{
c
d
Decal - Noise  
Part No. 922854  
Location: Base of Seat on GRP  
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1.14  
SAFETY PRECAUTIONS  
1.14  
DECALS  
Continued.  
Decal - Serial Number  
Location: Rear Bulkhead  
SPELLBROOK, BISHOP’S STORTFORD,  
HERTS. CM23 4BU. ENGLAND.  
CODE 953C  
T424  
- TURF MOWER  
1750  
Kg  
2004  
RPM 2800  
kW 35.3  
Serial No: 953C001001  
105dB  
PREVENT PLATFORM DAMAGE !  
ENGAGE PARKING BRAKE AND  
DROP CUTTERHEADS BEFORE  
RAISING/LOWERING PLATFORM.  
Decal - Prevent Platform Damage  
Part No. 924828  
Location : Platform, Seatwell  
POUR EVITER DES DOMMAGES  
,
METTRE LE FREIN DE PARKING ET POSER  
LES TETES DE COUPES AVANT DE  
BOUGER LA PLATE-FORME.  
..  
SCHADEN VERMEIDEN  
-
PARKBREMSE  
FESTSETZEN UND DIE SCHNEIDEINHEITEN  
HERUNTERLASSEN BEVOR DIE SITZ-  
PLATTFORM GEKIPPT WIRD.  
VOORKOM BESCHADIGING! ZET  
MACHINE OP HANDREM EN LAAT DE  
KOOIEN ZAKKEN, VOORDAT HET  
BEDIENINGS PLATFORM NAAR VOREN  
GEKANTELD OF TERUG GEPLAATST  
WORDT.  
924828 REV.0.  
Decal - Warning Platform Latch  
Part No. 924868  
Location: Next to Platform Latch  
Warning - Prevent Accidents: Ensure plat-  
form is correctly seated and the latch is  
fully locked before operating the machine.  
924868 REV .0  
DAILY MAINTENANCE  
DAILY MAINTENANCE  
SEAT SWITCH  
FUEL LEVEL  
ENGINE OIL  
FUEL  
E
F
D
Decal - Maintenance T424  
Part No. 953812  
50 HOURS MAINTENANCE  
CLEAN AND INSPECT THE MACHINE.  
TYRES  
FASTENERS  
HOSE LINES  
HYDRAULIC OIL  
Location: Underside of Engine  
Cover next to Latch.  
AIR CLEANER  
CUTTERHEADS  
WHEEL NUT TORQUE  
RADIATOR/SCREENS COOLANT LEVEL  
30 40mm  
-
FRONT: 200Nm  
REAR: 54Nm  
GREASE POINTS  
DAILY (IF FITTED)  
DAILY  
50 HOURS (WEEKLY)  
953812(Rev 1)  
a
Decal - Warning Crush Hazard  
Part No. 953829  
Location: Platform LH/RH Sides  
a) Warning of Cutterheads being Lowered  
b) Do Not Stand in the Area Indicated  
When the Cutterheads are being  
Lowered or Raised  
b
953829(Rev.1.)  
Decal - Pedal Backstop  
Part No. 953877  
Location: Platform RH Side  
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1.15  
1.15  
EC CONFORMITY INFORMATION  
NOISE LEVELS  
Operators Daily Personal Noise Exposure: HAYTER LIMITED have  
no control over site conditions, duration of use, state of maintenance or  
adjustment of the mower. All of these factors will affect the operator's  
SPELLBROOK, BISHOP’S STORTFORD,  
HERTS. CM23 4BU. ENGLAND.  
CODE 953C  
T424  
daily personal noise exposure level - L  
EP,d  
- TURF MOWER  
1750  
Kg  
Under typical working conditions operators could be exposed to a daily  
personal noise exposure level in excess of 85 dB (A) L  
2004  
RPM 2800  
kW 35.3  
EP,d  
Serial No: 953C001001  
Sound pressure level:  
The maximum sound pressure level at the operator's position is 85 dB (A)  
measured in accordance with European Standard EN836.  
Sound power level:  
The maximum sound power level is 105 dB(A) measured in accordance  
with EC Directive 2000/14/EC.  
105dB  
If ear protection is required, ear protectors with good attenuation in the  
63 - 8000 Hz frequency range should be used.  
Employers of personnel using this machine are advised to read the 'Noise  
at Work Regulations' as the operator's daily personal exposure level could  
be above the 'First Action Level'.  
Wear Hearing  
Protection  
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1.16  
EC CONFORMITY INFORMATION  
1.16  
EC DECLARATION OF CONFORMITY  
EC DECLARATION OF CONFORMITY  
HAYTER LIMITED,  
Spellbrook, Bishop’s Stortford, Herts CM23 4BU ENGLAND  
declare that the lawnmower:  
Type.  
Model Name:  
Model No:  
Cutting Width:  
Ride-on Cylinder Lawnmower  
T424 Turf Mower  
Code 953C  
346 cm  
Speed of rotation of cutting device:  
Engine Manufacturer:  
Speed of rotation of engine:  
1050 rpm  
Kubota  
2800 rpm  
Complies with the provisions of Directive: 98/37/EC Essential Health & Safety Requirements Relating to the  
Design & Construction of Machinery and Safety Components, as amended and the regulations transposed into  
national law.  
Also Directive 89/336/EEC Electromagnetic Compatibility, as amended and the regulations transposed into  
national law.  
Also Directive 2000/14/EC Noise emission in the environment by equipment for use outdoors and the regula-  
tions transposed into national law.  
Procedure applied for the conformity assessment: ANNEX VI, procedure 1.  
Notified Body: Sound Research Laboratories Ltd. Holbrook House, Little Waldingfield,  
Sudbury, Suffolk,COL0 OTH ENGLAND  
Notified body identification No: 1088  
Measured sound power level:  
Guaranteed sound power level:  
104 dB(A)  
105 dB(A)  
Complies with harmonised standards: EN 292, EN 836 and EN ISO 14982.  
Standards Used: EN292, EN836 and ENISO14982  
Authorised Signature  
Date: 01.10.04  
Declaration done and  
Technical Documentation Kept at:  
S.A. Maryniak  
(Technical Director)  
HAYTER LIMITED,  
Spellbrook, Bishop’s Stortford,  
Herts CM23 4BU ENGLAND  
VIBRATION INFORMATION  
Lawnmower vibration information. Vibration at the operators contact position measured in accordance  
with European Standards EN 836.  
- steering wheel does not exceed 2.5ms-2  
- at seat does not exceed 0.5ms-2  
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1.17  
1.17  
INTRODUCTION  
INTRODUCTION  
The Hayter T424 Mower is a diesel engine powered self propelled machine with hydraulic systems for ground  
drive, cutterhead drive, cutterhead lift and steering. The machine operates in four wheel drive at all times, how-  
ever, the transmission system can be operated in both ‘work’ and ‘transport’ modes. These modes can be select-  
ed by the operator. In order to optimise machine performance and reduce transmission system wear it is advis-  
able to operate the machine in the appropriate mode. ‘Work’ signifies cutting operations and ‘Transport’ signi-  
fies travelling between work sites. A differential lock function may be selected.  
The Hayter T424 Mower is a precision built machine designed solely for cutting grass and similar low lying  
ground vegetation within the limitations stated in this manual. Use in any other way is considered as contrary  
to the intended use. Compliance with and strict adherence to the conditions of operation, service and repair as  
specified in this Operators Manual also constitute essential elements of the intended use. The way in which this  
machine is operated and maintained will have a profound effect on its performance and reliability.  
This manual contains advice on the Hayter T424 Mower which should be operated, serviced and repaired only by  
persons who are familiar with its particular characteristics and who are acquainted with the relevant safety proce-  
dures.  
The safety precautions listed herein and all other generally recognised regulations on safety and all road traffic reg-  
ulations must be observed at all times.  
Any arbitrary modifications carried out to this machine may relieve Hayter Limited of liability for any resulting dam-  
age or injury.  
In the pursuit of continuous product development Hayter Limited reserve the right to alter specifications without  
notice.  
Cutterhead Variants: The Hayter T424 can be fitted with a range of cutterhead configurations and optional  
extras:  
Fixed Floating Heads with smooth  
Heads or grooved front rollers  
Cutterhead  
Cylinder diameter Number of blades  
200mm  
254mm  
4, 6, 8, 10.  
4, 6  
MK3 Cutterhead  
Optional Extras:  
Beacon Kit - Amber flashing warning light.  
Lighting Kit - Complies with EC traffic regulations.  
R.O.P.S ( Roll Over Protective Structure ) 2 post design.  
Cab R.O.P.S. - Full weather protection and roll - over protection.  
We recommend the fitting of a Hayter approved R.O.P.S only, to increase operator safety in the event of  
a machine rolling over.  
Note: with a R.O.P.S. fitted stability angle is decreased to 14 degrees, due to the higher centre of gravity  
in the machine  
Left and Right: Throughout this manual the terms 'Left' and 'Right' refer to the machine when looking in the  
direction of forward travel.  
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1.18  
SPECIFICATIONS  
1.18  
SPECIFICATIONS  
ALL FIGURES ARE NOMINALLY QUOTED AT THE RATED ENGINE SPEED OF 2800 RPM  
UNLESS OTHERWISE STATED.  
ENGINE  
Kubota V2203 Diesel.  
4 Cylinders in line.  
Type:  
47.3hp (35.3 kw) @ 2800 RPM.  
DIN 70020.  
Power Rating:  
Capacity:  
Air Cleaner:  
2197 cc.  
Clean air drawn through screened air intake in-front of  
radiator via a cyclonic air cleaner with built in pre-cleaner.  
Water-Cooled.  
Cooling System:  
12V. 480 Amps S.A.E.  
40 Amps.  
Battery:  
Alternator:  
Starter:  
1.4 KW Electric.  
Glow Plug.  
Cold Starting:  
Idle Speed:  
Fuel Type:  
+
1250( 50) R.P.M.  
Diesel.  
Fuel Tank Capacity  
70 Litres  
IMPORTANT: PREVENT DAMAGE - for further information regarding the engine, refer to -  
ENGINE MANUAL .  
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1.19  
1.19  
SPECIFICATIONS  
TRANSMISSION SYSTEM  
Drive Type:  
Pump:  
Hydraulic.  
Variable displacement hydraulic piston pump with integral charge  
pump servo assisted.  
Wheel Motors:  
Front Axle - ‘Twin Lock’ Radial piston, fixed displacement, with  
integral disc brake (pressure released).  
Rear Axle - Radial piston, fixed displacement.  
Differential Lock:  
Drive:  
Electro - hydraulic control valve with pedal control (only avail-  
able in ‘Work’ mode).  
Four wheel drive in ‘Work’ and ‘Transport’ modes.  
Relief Valve Setting:  
Main service relief 350 bar (5075 psi) differential.  
Charge pressure relief 29 bar (421 psi) differential.  
CUTTERHEAD DRIVE SYSTEM  
Hydraulic.  
Drive Type:  
Tandem hydraulic gear type.  
Pump:  
31 Litres per minute. (each circuit)  
Delivery Rate:  
Cutterhead Motors:  
Hydraulic gear type, reversible, pressure balanced with integral  
differential pressure sensing relief check valve. Direct drive.  
Electro-hydraulic.  
Automatic diverter valve safety cut-off.  
Control:  
250 bar (3625 psi) differential.  
Relief Valve Settings:  
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1.20  
SPECIFICATIONS  
1.20  
CUTTERHEAD LIFT SYSTEM AND STEERING  
Hydraulic.  
Drive Type:  
Pump:  
Hydraulic gear pump with integral relief valve.  
11 Litres per minute.  
Delivery Rate:  
Steering:  
Power beyond hydrostatic steering valve with priority flow to  
steering and auxiliary flow to cutterhead lift system. Manual  
emergency steering.  
Mechanical-hydraulic.  
Cutterhead Lift Control:  
Wing Units:  
Mechanical spring power assistance to lower.  
105 bar (1522 psi).  
Relief Valve:  
Variable hydraulic applied weight transfer acting on all  
cutterheads.  
Weight Transfer:  
HYDRAULIC SYSTEM  
Hydraulic Oil Type:  
Refer - RECOMMENDED LUBRICANTS  
AND HYDRAULIC FLUIDS.  
Capacity:  
77 Litres.  
Cooling:  
Forced air finned tube oil cooler.  
125 micron no bypass mesh filter.  
10 micron with 2 bar (29 psi) bypass check valve.  
Suction Line Filtration:  
Return line Filtration:  
Transmission Filtration:  
10 micron no bypass pressure filter.  
Cleanliness Level:  
ISO Code 18/13 or better (ISO 4406)  
1300 - 2500 Particles/ml<15μ  
40 - 80 Particles/ml>15μ  
O
95 C  
Maximum Oil Temperature:  
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1.21  
1.21  
SPECIFICATIONS  
VEHICLE SPECIFICATIONS  
Travel Speed:  
0-25 km/h (0-15 mph) forward.  
0-11 km/h (0-7 mph) reverse.  
Tyres  
Tyre Type  
Recommended Tyre Pressures  
Turf Conditions  
Road Conditions  
Max Pressure  
Front axle  
Rear axle  
26 x 12 - 12 4 ply  
Trelleborg turf pattern.  
1.7 bar  
(25 psi)  
1.4 bar  
(20 psi)  
0.7 bar  
(10 psi )  
20x10.0-8 4 ply  
Dico turf pattern.  
1.7 bar  
(25 psi)  
1.4 bar  
(20 psi)  
0.7 bar  
(10 psi).  
Wheel Nut Torque Setting: Front axle  
200Nm  
54Nm  
Rear axle  
Service Brakes: Closed loop hydrostatic service braking operating on front wheels only.  
Parking Brake: Lever operated oil immersed disc brakes on front wheels only. Pressurised hydraulic oil  
release with mechanical override for emergency towing purposes.  
Ground Clearance: 180mm at 13mm cut height and with cutterheads raised.  
Steering: Hydrostatic rear wheel steering, emergency manual steering.  
Features:  
Tilting operator platform.  
Lockable engine cover.  
Adjustable suspension seat with folding arms.  
Adjustable steering column.  
Cutterhead parking latches with safety locks.  
Backlapping facility.  
Differential lock.  
Engine coolant and hydraulic oil overheat audible warning (horn).  
Variable cutterhead weight transfer/traction assistance.  
Four wheel drive in ‘Work’ and ‘Transport’ modes.  
Hydraulic oil filter blocked telltales on control panel.  
Wing arm breakback.  
Safety Features:  
Neutral start interlock on transmission pump, parking brake and  
cutterhead drive switch.  
Operator presence control (seat switch).  
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1.22  
SPECIFICATIONS  
1.22  
OPERATOR CONTROLS  
Steering:  
Automotive padded steering wheel with adjustable steering  
column.  
Cylinder Drive:  
Electrical switch (forward - off - reverse).  
Hand operated lever.  
Engine Speed:  
Parking Brake:  
Hand operated lever.  
Forward and Reverse:  
Ignition:  
Separate foot operated pedals.  
Key start, shut - off and engine preheat.  
Foot pedal.  
Differential Lock:  
‘Work’ or ‘Transport’ modes:  
Cutterhead Position:  
Cutterhead Lift Configuration:  
Horn:  
Electrical Switch.  
Hand operated lever.  
Electrical Switch (Two Positions).  
Button switch.  
Weight Transfer:  
Hand wheel.  
INSTRUMENTATION  
Warning Lights:  
Engine oil pressure.  
Battery charge.  
Engine coolant temperature.  
Hydraulic transmission oil temperature.  
Gauges:  
Digital hour meter.  
Fuel level.  
Hydraulic oil level sight glass.  
Indicator Lights:  
Engine pre-heat.  
Hydraulic return filter blocked.  
Hydraulic transmission filter blocked.  
Cutterdeck drive switch off.  
Parking brake engaged.  
Transmission neutral.  
‘Work’ mode active.  
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1.23  
1.23  
SPECIFICATIONS  
WEIGHT AND DIMENSIONS  
Wheel Base:  
1610 mm.  
Working Width:  
Cutting Width:  
3640 mm.  
3460 mm.  
Transport Width:  
Overall Length:  
Overall Height:  
Approx. Working Weight:  
1850 mm at 13mm height of cut.  
2930 mm.  
1570 mm.  
1800 kg less operator, no options fitted.  
(The exact weight depends on the cutterhead configuration).  
RECOMMENDED LUBRICANTS AND HYDRAULIC FLUIDS  
Grease Points: A good quality medium grease.  
Engine: Refer - ENGINE OPERATORS MANUAL.  
Hydraulic System:  
Ambient Temperature Range  
0 - 30OC (32 - 86OF)  
15 - 40 OC (59 - 104OF)  
I S O viscosity grade  
46 hydraulic oil.  
I S O viscosity grade  
68 hydraulic oil.  
Should you be in any doubt please contact your Hayter dealer. Using incorrect grades will cause  
premature wear of hydraulic components and invalidate warranty.  
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1.24  
SPECIFICATIONS  
1.24  
CUTTERHEADS  
MK3 200mm Cutterhead  
762 mm.  
MK3 254mm Cutterhead  
Cutting Width:  
762 mm.  
Cylinder Diameter:  
Cylinder Speed:  
200 mm.  
254 mm.  
1050 rpm approx.  
12 - 80 mm.  
4, 6, 8, 10  
1050 rpm approx.  
Height of Cut:  
12 - 80 mm.  
Number of Blades:  
Smooth Rear Roller:  
Smooth Front Roller:  
Grooved Front Roller:  
Configuration:  
4, 6  
Standard.  
Standard.  
Optional.  
-
Optional.  
-
Fixed / Floating.  
Fixed.  
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1.25  
1.25  
OPERATING THE MOWER  
SAFETY NOTICE  
WARNING: PREVENT ACCIDENTS - Before operating the mower it is essential that;  
- The operator reads and understands this manual.  
- The operator platform latching mechanism is fully engaged and in good work-  
ing order, refer - ‘OPERATOR PLATFORM LATCHING MECHANISM’.  
- The daily maintenance checks have been properly carried out and the turf  
mower is in good working order.  
- The operator should wear safety clothing and eye protection. Failure to do so  
could result in risk to health and safety.  
- The area where the equipment is to be used is inspected and all objects which  
may be thrown by the machine are removed.  
Operate safely on slopes;  
It is essential to follow safe working practices when working on slopes. In  
order to avoid potentially hazardous situations, it is essential that the operator  
understands and observes the relevant safety precautions listed in this manual,  
refer - ‘SAFETY PRECAUTIONS’.  
OPERATOR PRESENCE CONTROLS  
Cutting Cylinder Drive Lockout: Drive to the cutting cylinders is only possible when the operator is  
seated. If the operator raises off the seat for a period of more than one second, a switch is activated and  
drive to the cutting cylinders is automatically disengaged. To re-engage drive to the cutting cylinders, the  
operator must return to the seat, then operate the cutterhead drive switch to the ‘OFF’ position before  
moving it back to the ‘ON’ position. If the operator rises off the seat for a brief moment during normal  
work, drive to the cutting cylinders is not affected.  
The engine can only be started with the cutterhead drive switch in the ‘OFF’ position.  
Engine Start Lockout: The engine can only be started when the forward/reverse travel pedal is released  
to the 'NEUTRAL' position, the cutterhead drive switch is in the ‘OFF’ position and the parking brake is  
engaged. When these circumstances are satisfied, switches are activated permitting the engine to be start-  
ed.  
Engine Run Interlock: Once the engine is started the operator must be seated before the parking brake is  
released for the engine to continue to run.  
With the engine running and the machine moving with the travel pedal depressed, the engine will contin-  
ue to run when the operator rises from the seat. If the travel pedal is then allowed to return to neutral the  
engine will cut out.  
WARNING: PREVENT ACCIDENTS - Do not operate the turf mower if the operator presence  
controls are defective in any way. ALWAYS replace faulty parts and check that they function  
correctly before operating the mower.  
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1.26  
OPERATING THE MOWER  
1.26  
IDENTIFICATION OF CONTROLS  
1. Parking brake lever.  
2. Lighting switch  
7
(supplied with lighting kit).  
3. Warning beacon switch  
(supplied with beacon kit).  
8
6
9
5
10  
4. Hazard warning switch  
(supplied with lighting kit).  
5. Cutterhead position controls.  
6. Throttle control lever.  
7. Ignition key.  
1
2
3
4
8. Cutterhead drive switch.  
9. Dip beam / main beam light switch  
(supplied with lighting kit).  
10. Direction indicator switch  
(supplied with lighting kit).  
11. Horn button.  
23  
17  
14  
13  
11  
12  
15  
21  
22  
16  
12. Transmission oil filter indicator.  
13. Oil pressure indicator.  
18  
19  
20  
14. Transmission temperature indicator.  
15. Return oil filter indicator.  
16. Battery warning indicator.  
17. Engine temperature warning indicator.  
18. Glow plug indicator.  
37  
4A953B01A  
19. Cutterhead drive off indicator.  
20. Parking brake indicator.  
21. Transmission neutral indicator.  
22. Weight transfer control.  
23. ‘Work/Transport’ mode switch.  
24. Centre cutterhead transport latch.  
25. LH front cutterhead transport latch.  
26. RH front cutterhead transport latch.  
27. Centre cutterhead transport latch.  
28. LH wing unit transport latch.  
29. RH wing unit transport latch.  
30. Differential lock pedal.  
25  
26  
30  
34  
33  
24  
27  
35  
36  
28  
31.Dual lift configuration switch.  
32. Wash / wipe switch  
(supplied with cab kit).  
33. Forward travel pedal.  
34. Reverse travel pedal  
35. Forward travel speed backstop lever.  
36. Forward travel speed backstop cam.  
37. Hour Meter  
1D953S01A  
29  
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1.27  
1.27  
OPERATING THE MOWER  
BRAKING SYSTEM  
Parking Brake Engaged  
Parking Brake : Move the parking brake lever to its rear position to engage  
the parking brake. Do not operate the mower with the parking brake engaged.  
P
WARNING : PREVENT ACCIDENTS - The parking brake operates on the  
front wheels only. Do not park the mower on a slope.  
Service brakes : Service braking is achieved by the hydraulic transmission system. When the forward  
or reverse travel pedals are released or the engine speed reduced, service braking becomes effective and  
travel speed is automatically reduced. To increase the braking effect, push the transmission pedals into  
the neutral position.  
WARNING : PREVENT ACCIDENTS - The service braking system will not hold the mower at a  
standstill. ALWAYS ensure the parking brake is engaged to park the mower at a standstill.  
Emergency Braking : In the event of service brake failure, switch off the  
ignition to bring the mower to a standstill.  
Parking Brake Engaged  
P
ing system. Remain seated and hold on to the steering wheel to prevent ejection from the mower  
caused by the front wheel brakes being applied suddenly when travelling.  
WARNING: PREVENT ACCIDENTS - Take care when operating the brak-  
THROTTLE CONTROL  
Operate the throttle control in a forward direction to increase engine speed.  
Engine Speed  
Fast  
Engine Speed  
Slow  
Operate the throttle control in a rearward direction to reduce engine speed.  
Note that the engine speed dictates the speed of the other functions, i.e. travel,  
cutting cylinder, position controls.  
TRAVEL  
Forward travel: Depress the forward travel pedal to increase forward travel  
speed. Release the pedal to reduce speed.  
Reverse travel: Depress the reverse travel pedal to increase reverse travel  
speed. Release the pedal to reduce speed.  
Stop (Neutral): Release the forward and reverse travel pedals.  
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1.28  
OPERATING THE MOWER  
1.28  
WORK/TRANSPORT MODES  
WARNING : PREVENT ACCIDENTS - Ensure that the mode elected is appropriate to the mode of  
operation of the machine.  
Select ‘Work’ mode when operating the mower in conditions of poor traction when maximum tractive per-  
formance is required. Selecting ‘Work’ mode will enable the use of the differential lock.  
Select ‘Transport’ mode when operating the mower in conditions of good traction. For example when trav-  
elling on the public highway or mowing large, level, open areas. Selecting ‘Transport’ mode in these condi-  
tions will reduce transmission system wear and tear.  
Differential lock is not available for use when ‘Transport’ mode is selected.  
1
1. Transport Mode  
2. Work Mode  
2
TRANSPORT LATCHES  
WARNING : PREVENT ACCIDENTS - ALWAYS raise the  
cutterheads to the transport position and secure with the transport  
latches and safety locks when travelling between work areas.  
1.  
Front and Wing cutterhead transport latches:  
2.  
Centre cutterhead transport latch:  
WARNING : PREVENT ACCIDENTS - Stored energy devices are  
charged when the outer wing units are in the transport position.  
Always operate the relevant lift controls to provide hydraulic support  
for the cutterhead suspensions before attempting to release the trans-  
port latches.  
1D924P07A  
1. Transport latch.  
2. Safety lock.  
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1.29  
1.29  
OPERATING THE MOWER  
DIFFERENTIAL LOCK  
WARNING : PREVENT ACCIDENTS - Do not engage the  
differential lock at high speed. The turning circle will increase with  
the differential lock engaged.  
The differential lock is effective only when ‘Work’ mode is selected.  
The differential lock operates in both ‘forwards’ and ‘reverse’ and can be  
engaged whilst the turf mower is travelling slowly. Engage the  
differential lock to prevent excessive wheel spin when the drive wheels  
lose traction. Engine power demand increases when the differential lock  
is engaged. Prevent excessive power requirements by operating with  
differential lock at SLOW speed.  
Engaging differential lock: Depress the differential lock pedal.  
Disengaging differential lock: Release the differential lock pedal.  
TRAVEL CONTROL PEDALS  
WARNING: PREVENT ACCIDENTS - Ensure that the trans-  
mission control cable is securely fastened to the travel control  
pedal mechanism. Ensure that both the cable and pedals artic-  
ulate freely through their full range of travel and that the  
mechanism freely returns to neutral when released.  
WARNING: PREVENT ACCIDENTS - Ensure that the con-  
trol cable is correctly routed underneath the operator platform  
such that it is clear of any obstructions and impediments to its  
operation.  
This is of particular importance after the platform has been  
opened and subsequently closed following inspection mainte-  
nance operations.  
Before operating the machine, ensure that there are no foreign  
objects or liquids on the platform or pedals - ALWAYS KEEP  
THE OPERATOR PLATFORM CLEAR/CLEAN.  
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1.30  
OPERATING THE MOWER  
1.30  
FORWARD TRAVEL SPEED BACKSTOP LEVER  
The backstop lever can be used to limit the move-  
ment of the forward pedal for accurate forward trav-  
el speed, and the clip rate required.  
Operate the lever in a forward direction to increase  
the travel speed setting and in a rearward direction  
to decrease.  
Note: This is not a cruise control device. Releasing  
the forward travel pedal will allow it to return to  
neutral.  
1D953S07A  
OPERATOR PLATFORM LATCHING MECHANISM  
WARNING: PREVENT ACCIDENTS - Never operate the mower  
without first checking that the operator platform latching mechanism  
is fully engaged and in good working order. Check behind the seat and  
ensure that the top of the platform is flush with the top of the fuel tank.  
Also check beneath the tool tray and ensure that the release lever is  
padlocked in the correct position.  
IMPORTANT: PREVENT DAMAGE - Engage the parking brake and  
lower the cutterheads to the ground. Remove ignition key and close  
ignition cover before raising or lowering the platform.  
924868 REV .0  
Releasing the platform: Release and remove the tool tray from the left hand side of the platform.  
Release the padlock securing the locking latch handle with the key provided. Move the locking latch  
handle towards the front of the mower (position A) until the latch hooks clear the locking bar and raise  
the platform. The gas spring will provide assistance.  
Securing the platform: Lower the platform carefully. The gas spring will provide assistance. Move the  
locking latch handle towards the front of the mower (position A) as the platform nears the fully lowered  
position. This will ensure that the latch hooks clear the locking bar. Fully lower the platform and move  
the locking handle towards the rear of the mower (position B) until the latch hooks fully engage the  
locking bar. Replace the padlock in order to secure the locking latch handle in place.  
1. Tool tray  
2. Locking latch handle  
3. Padlock  
1
A. Release  
B. Lock  
B
A
2
3D924S004A  
3
3D924S002A  
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1.31  
1.31  
OPERATING THE MOWER  
ADJUSTABLE STEERING COLUMN  
WARNING: PREVENT ACCIDENTS - Before operating the mower, ensure that the steering  
column adjuster mechanism is in good working order and that the steering wheel is locked securely  
in position.  
WARNING: PREVENT ACCIDENTS - Adjustment of the steering wheel and steering column  
should only be carried out when the mower is at a standstill with the parking brake engaged.  
Adjusting the angle of inclination of the steering wheel: Move lever ‘A’  
downwards to adjust the angle of steering wheel. Release the lever to lock  
the steering wheel in position.  
A
1D950R58  
Adjusting the length of the steering column: Move the lever ‘Aupwards  
to adjust the length of the steering column. Release the lever to lock the  
steering column in position.  
A
1D950R59  
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1.32  
OPERATING THE MOWER  
1.32  
OPERATOR SEAT  
WARNING: PREVENT ACCIDENTS - Before operating the mower ensure that the operator seat  
mechanisms are in good working order and that the seat is locked securely in position.  
WARNING: PREVENT ACCIDENTS - Adjustment of the seat mechanisms should only be carried  
out when the mower is at a standstill with the parking brake engaged.  
Fore/Aft Adjustment: Move lever ‘B’ upwards to adjust the Fore/Aft posi-  
tion of the seat. Release the lever to lock the seat in position.  
B
1D924T3  
Operator weight adjustment: Rotate handle ‘C’ clockwise as shown to  
increase suspension stiffness and counter-clockwise to decrease. Dial ‘D’  
indicates when the optimum suspension adjustment has been set according  
to operator weight (kg).  
CCW  
C
D
1D924T4  
CW  
Height adjustment: Manually lift the seat for incremental height adjustment.  
To lower lift the seat to beyond its highest setting, then allow it to drop to the  
lowest setting.  
1D924T5  
Backrest adjustment: Pull handle ‘E’ outwards to adjust the seat backrest  
angle. Release the handle to lock the seat backrest in position.  
E
1D924T6  
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1.33  
1.33  
OPERATING THE MOWER  
WARNING SYSTEMS  
Engine coolant overheating warning : The engine coolant warning  
light illuminates and the horn is actuated.  
Hydraulic oil overheating warning : The hydraulic oil warning light  
illuminates and the horn is actuated when the hydraulic oil in the reser-  
voir exceeds 95˚C approx.  
Low battery charge warning : The battery charge warning light illuminates.  
Low engine oil pressure warning light : The engine oil pressure warning  
light illuminates.  
AUDIBLE WARNING HORN  
Depress the horn button to provide an audible warning.  
IMPORTANT : PREVENT DAMAGE - The horn is automatically  
actuated when an engine coolant or hydraulic oil overheat condition  
occurs. STOP the engine immediately and effect remedial action  
before restarting.  
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1.34  
OPERATING THE MOWER  
1.34  
IGNITION KEY  
O
0 = Engine off.  
I
II  
III  
I = Engine run / Auxiliary on.  
II = Engine pre-heat.  
III = Engine start.  
WARNING : PREVENT ACCIDENTS - Always remove the ignition key when the mower is not in  
use.  
IMPORTANT : PREVENT DAMAGE - Always fit the protective cap when the ignition key is  
removed to prevent ingress of dirt and moisture from damaging the mechanism.  
ENGINE PRE-HEAT INDICATOR LIGHT  
Turn the ignition key to position II. The engine pre-heat indicator light  
will illuminate. When the correct pre-heat temperature is achieved, the  
indicator light will switch off. When this condition is achieved, turn the  
ignition key to position III to start the engine.  
WS044  
IMPORTANT: PREVENT DAMAGE - Attempting to start a cold  
engine before the pre-heat indicator light switches off can cause  
unnecessary wear to the battery.  
FUEL LEVEL GAUGE  
FUEL  
Displays fuel tank level.  
D
E
F
WS023  
E = Empty.  
F = Full.  
HOURMETER  
Displays engine running hours.  
3 4 5 5 9  
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1.35  
1.35  
OPERATING THE MOWER  
TRANSMISSION NEUTRAL INDICATOR LIGHT  
Illuminates when the travel control pedal is in the  
neutral position and the ignition key is turned to position ‘I’.  
N
Note: The parking brake must be engaged for the transmission neutral indicator light  
to illuminate.  
WS041  
CUTTERHEAD DRIVE SWITCH INDICATOR LIGHT  
Illuminates when the cutterhead drive switch is in the ‘off’ position and the ignition  
key is turned to position ‘I’.  
WS046  
PARKING BRAKE INDICATOR LIGHT  
Illuminates when the parking brake is engaged and the ignition key is turned to posi-  
tion ’I’.  
P
WS045  
HYDRAULIC RETURN FILTER INDICATOR LIGHT  
Illuminates when the return filter element is blocked.  
Note: The engine must be running for the hydraulic return filter indicator light  
to illuminate. The indicator light may illuminate briefly when the hydraulic oil  
is cold.  
WS043  
HYDRAULIC TRANSMISSION FILTER INDICATOR LIGHT  
Illuminates when the transmission filter element is blocked.  
Note: The engine must be running for the hydraulic return filter indicator light  
to illuminate. The indicator light may illuminate briefly when the hydraulic oil  
is cold.  
WS042  
TRANSMISSION SYSTEM ‘WORK’ MODE INDICATOR LIGHT  
Illuminates when the transmission system ‘work’ mode is selected and the ignition  
key turned to position ‘I’  
WS055  
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1.36  
OPERATING THE MOWER  
1.36  
CUTTERHEAD POSITION CONTROL  
4A953B03A  
1
The cutterheads may be raised or lowered using the bank of 3 lift control  
levers.  
2
3
To lower the cutterheads, operate the lift control levers in a downward  
direction until locked in position 1. If the cutterhead drive switch is in the  
‘ON’ position, the cylinder drive will engage when the cutterheads are  
approximately 300mm above ground level.  
6
4
5
1. Down / float  
2. Neutral  
3. Raise  
4. LH Wing or LH Wing+LH Front*  
5. Centre+LH/RH Front or Centre*  
6. RH Wing or RH Wing+RH Front*  
IMPORTANT: PREVENT DAMAGE - The lift control levers must be  
locked in position 1 while mowing. NEVER mow with the lift control  
levers in position 2 (neutral).  
To raise the cutterheads, operate the lift control levers in an upward direction  
and hold in position 3. If the cutterhead drive switch is in the ‘ON’ position,  
the cylinder drive will disengage when the cutterheads are approximately  
300mm above ground level. Release the lift control levers when the  
cutterheads are at the required height. The control levers will automatically  
return to position 2 (neutral).  
*Depending on which lift configuration  
is selected. Refer-Dual Lift Configuration  
Control.  
DUAL LIFT CONFIGURATION CONTROL  
The dual lift configuration control function enables the lift controls to be  
used in two ways as follows:  
1
Five gang mode, lift configuration (1):  
Control switch in position 1  
LH lift lever (3) controls LH wing cutterhead  
Centre lift lever (4) controls LH front + centre + RH front cutterheads  
RH lift lever (5) controls RH wing cutterhead  
2
3D95301  
4A953B03B  
Three/five gang mode, lift configuration (2):  
Control switch in position 2  
LH lift lever (3) controls LH wing + LH front cutterheads  
Centre lift lever (4) controls centre cutterhead  
RH lift lever (5) controls RH wing + RH front cutterheads  
With the LH and RH wing cutterheads locked in the fully raised  
transport position.  
5
3
4
1. 5 Gang Mode  
Control switch in position 2  
2. 3/5 Gang Mode  
3. LH Lift Lever  
4. Centre Lift Lever  
5. RH Lift Lever  
LH lift lever (3) controls LH front cutterhead  
Centre lift lever (4) controls centre cutterhead  
RH lift lever (5) controls RH front cutterhead  
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1.37  
1.37  
OPERATING THE MOWER  
CUTTERHEAD DRIVE ENGAGEMENT  
The cutterhead drive can be engaged only when the operator is  
seated correctly, refer - OPERATOR PRESENCE CONTROLS.  
1
2
Briefly operate the lift control levers to raise the cutterheads,  
thereby removing the cutterhead suspension deadweights and wing  
units stored energy reaction from the transport latch mechanisms.  
3
WS047  
Release the cutterhead latches. Operate the cutterhead position  
controls to the down / float position and lower all cutterheads to  
the ground ready for mowing.  
1. Forward.  
2. Off.  
3. Reverse.  
Forward rotation cutterhead drive engagement : Operate the  
cutterhead drive switch to the 'Forward' position.  
Reverse rotation cutterhead drive engagement : Operate the  
cutterhead drive switch to the 'Reverse' position.  
To disengage all cutterhead drives : Operate the cutterhead drive  
switch to the 'Off' position.  
WARNING : PREVENT ACCIDENTS - Refer OPERATOR  
PRESENCE CONTROLS for additional information.  
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1.38  
OPERATING THE MOWER  
1.38  
WEIGHT TRANSFER / TRACTION ASSISTANCE  
A variable hydraulic weight transfer system is provided for improving tyre grip with the grass surface -  
‘Traction Assistance’.  
Hydraulic pressure in the cutterhead lift system provides a lifting force which reduces cutterhead weight  
on the ground and transfers the weight as a downward force onto the mower’s tyres. This action is  
known as ‘Weight Transfer’.  
To engage weight transfer: The amount of weight transfer can be varied to suit operating conditions by  
rotating the weight transfer hand wheel as follows;  
Release the lock wheel underneath the hand wheel 1/2 turn anti-clockwise and hold.  
Rotate the hand wheel:  
Tighten the lock wheel.  
- Anti-clockwise to reduce weight transfer.  
- Clockwise to increase weight transfer.  
1. Weight transfer hand wheel  
2. Lock Wheel  
3. Control Panel  
3
1
2
4A922A02A  
STARTING THE ENGINE  
WARNING: PREVENT ACCIDENTS - Before starting the engine check that ;  
- The area is clear of bystanders.  
- The cutterhead drive is disengaged.  
- The parking brake is engaged.  
- The travel control pedal is in neutral.  
- You have read and understood the SAFETY PRECAUTIONS section in this  
manual.  
This machine is fitted with an Engine Start Lockout, refer - OPERATOR PRESENCE  
CONTROLS.  
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1.39  
1.39  
OPERATING THE MOWER  
STARTING THE ENGINE  
Continued.  
O
I
II  
III  
Starting a cold engine: Set the throttle control lever to approximately 70% full  
throttle.  
Turn the ignition key to the ‘ignition on’ position "I" and check that the engine  
oil pressure and battery charge warning lights illuminate.  
Turn the ignition key to the ‘preheat’ position "II" and hold until the engine  
pre-heat indicator light goes out.  
Turn the ignition key to the ‘start’ position "III" and hold to crank the engine.  
As soon as the engine starts release the ignition key back to position 'I'.  
1
1. Engine pre-heat  
indicator light  
WARNING: PREVENT DAMAGE - When the engine is operating all warning lights should be ‘off’.  
If a warning light illuminates, stop the engine immediately and have the fault rectified before  
restarting.  
Starting a warm engine: Engine pre-heating is unnecessary when restarting an engine which has been  
stopped for a few minutes. Follow the cold engine starting procedure without holding in ‘preheat’ position  
“II”.  
STOPPING THE ENGINE  
O
I
II  
To stop the engine: Turn the ignition key to position '0'.  
III  
WARNING: PREVENT ACCIDENTS - If the engine fails to stop when the ignition key is turned to  
'O' operate the fuel control lever to the engine ‘stop’ position as shown. Keep hands clear of moving  
objects and hot engine parts whilst the engine is running.  
1
2
1. Engine stop position  
2. Engine run position  
3. Stop solenoid  
PS008  
3
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1.40  
OPERATING THE MOWER  
1.40  
GENERAL OPERATING HINTS  
1.  
The rotational speed of the cutting cylinders should always be kept as high as possible in order to  
maintain the highest quality of cut. This in turn requires that the engine speed be kept as high as  
possible.  
2.  
3.  
4.  
The quality of cut will deteriorate if the forward speed is excessive. Always balance the quality of cut  
with the workrate required and set the forward speed accordingly.  
Never let the engine labour. Reduce the forward speed or increase the height of cut. Check that the  
cutting cylinders are not in heavy contact with their bottom blades.  
Regularly check the cutting cylinder to bottom blade adjustment every few hours even though cutting  
performance appears to be satisfactory. Heavy contact or excessive clearances between the cylinder and  
bottom blades will cause rapid wear to take place.  
5.  
6.  
Always disengage the cutterhead drive when travelling across ungrassed areas. Grass will lubricate the  
cutting edges whilst mowing. Excessive heat will build up if the cutting cylinders are run when not  
mowing and this will cause rapid wear to take place. For this reason it is also wise to reduce cutting  
cylinder speed when mowing lightly grassed areas or when the grass is dry.  
Cutting performance is best when cutting against the lie of the grass. In order to take advantage of this  
fact, the operator should attempt to alternate the direction of mowing between cuts.  
7.  
8.  
Take care not to leave uncut strips of grass at the overlap points between adjacent cutterheads, by  
avoiding tight turns.  
It is generally wise to remove rear roller scrapers where conditions allow, as optimum grass discharge is  
achieved without them. Scrapers should be refitted when conditions are such that mud and grass start to  
build up on the rollers. When refitting the scraper wires, care must be taken to ensure that they are cor-  
rectly tensioned, refer - MAINTENANCE - EVERY 50 HOURS.  
WARNING : PREVENT ACCIDENTS -Take care when travelling over obstacles such as roadside  
kerbs. ALWAYS travel at slow speed over obstacles to prevent damage to the machines tyres,  
wheels and steering system. Ensure that tyres are inflated to the recommended pressures.  
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1.41  
1.41  
OPERATING THE MOWER  
UNBLOCKING CUTTING CYLINDERS  
WARNING: PREVENT ACCIDENTS - Before attempting to clear any blockage from the cutting  
cylinders on this machines ensure all of the following:  
- Stop the machine on level ground.  
- Apply the parking brake and disengage all drives.  
- Lower the cutting units to the ground or securely lock in the designated transport positions.  
- Stop the engine and remove the ignition key to isolate all power sources and check that they  
are stopped.  
- Release all stored energy devices.  
- Check that all moving parts are stationary.  
NEVER ATTEMPT TO ROTATE THE CUTTING CYLINDERS BY HAND as there may be some  
residual pressure in the hydraulic system which could cause injury through sudden movement of the cylin-  
der(s) when the blockage is released.  
Always wear protective gloves and use a suitable strong wooden instrument. Ensure that this will fit between  
the blades and through the cylinder and is long enough to provide sufficient leverage to release the block-  
age and any residual hydraulic system pressure by rotating or rocking the cylinder. Make sure that the wood-  
en instrument is properly supported in the cylinder and avoid the use of excessive force to prevent damage.  
Only when the cylinder has a degree of free movement should the source of the blockage be removed.  
Ensure that the wooden instrument is also removed before restarting the power source.  
If the cylinder requires readjustment or repair, refer - MAINTENANCE - Cutterheads.  
CENTRE CUTTERHEAD HEIGHT OF CUT CORRECTION ADJUSTMENT  
With all cutterheads set at the same HOC via the indicator rings, it may be noticeable that the centre unit  
produces a higher cut finish compared to the wing units. The centre unit is pulled and the wing units are  
pushed this presents marginally different cutting angles relative to the ground. The amount of HOC varia-  
tion, which results from this will be influenced by the terrain but satisfactory results can usually be  
achieved by setting the centre cutterhead HOC indicator ring lower than the wing unit settings.  
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1.42  
OPERATING THE MOWER  
1.42  
CUTTERHEAD GENERAL INFORMATION  
The mower is designed to be used with MK3 200mm fixed or floating cutterheads or MK3 254mm  
fixed cutterheads.  
It is essential that the relationship between the bottom blades and the cutting cylinders are kept in good  
adjustment and that cutting edges are kept sharp to ensure good cutting performance, minimum power  
consumption and prolonged life for the cutting edges, refer - MAINTENANCE - Cutterheads.  
Fixed MK3 200mm/254mm Cutterheads: When the mower  
is set up with fixed cutterheads the height of cut is gauged by  
the rear roller and the cutterhead is allowed to pivot laterally to  
follow ground contours. This arrangement is normally  
recommended for general mowing requirements.  
(MK3 200mm Cutterhead illustrated).  
1D876P02A  
Floating MK3 200mm Cutterheads: When the mower is set  
up with floating cutterheads the height of cut is gauged by the  
front and rear rollers. The cutterhead is allowed to pivot fore  
and aft as well as laterally. This arrangement is recommended  
for high quality grass areas and performs well where grass is  
short and the ground undulations are severe.  
1D876P03A  
Grass deflectors: The rear grass deflectors must always be  
correctly fitted. The deflectors should be set as low as possible  
to deflect grass discharge to the ground.  
WARNING: PREVENT ACCIDENTS - Always ensure  
that the grass deflectors are angled below horizontal level,  
otherwise risks to health and safety may result.  
1D876P04B  
Height of cut gauge: An optional height of cut gauge is  
available to assist in achieving accurate cut height settings. It  
is suitable for both fixed and floating cutterheads.  
Hayter Part No. 63-01-760  
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1.43  
1.43  
OPERATING THE MOWER  
MK3 200mm FIXED CUTTERHEAD  
B
Height of cut adjustment: The height of cut is gauged by the  
position of the rear roller.  
Turn the adjusting nut assembly ‘B’ both ends clockwise to  
decrease height of cut ‘E’ or anti-clockwise to increase height of  
cut ‘E’.  
E
1D876P08B  
IMPORTANT: PREVENT DAMAGE - Do not attempt to  
unlock the nut assemblies, ‘B’.  
Ensure that all cutterheads are set at the same height of cut by  
either referring to the indicator rings ‘C’ or by using a height of  
cut gauge across the full width of each cutterhead for greater  
accuracy as shown.  
C
=
E
1D876P09A  
MK3 254mm FIXED CUTTERHEAD  
B
Height of cut adjustment: The height of cut is gauged by the  
position of the rear roller.  
Turn the adjusting nut assembly ‘B’ both ends clockwise to  
decrease height of cut ‘E’ or anti-clockwise to increase height of  
cut ‘E’.  
E
1D876P16A  
IMPORTANT: PREVENT DAMAGE - Do not attempt to  
unlock the nut assemblies ‘B’.  
Ensure that all cutterheads are set at the same height of cut by  
either referring to the indicator rings ‘C’ or by using a height of  
cut gauge across the full width of each cutterhead for greater  
accuracy as shown.  
C
=
E
1D876P09A  
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1.44  
OPERATING THE MOWER  
1.44  
MK3 200mm FLOATING CUTTERHEAD  
A
Pivot knuckle fixing: Secure the bolt in the rear “floating” slot  
position ‘Aas shown.  
1D876P07A  
B
Height of cut adjustment: The height of cut is gauged by the  
position of the front and rear rollers.  
D
To alter the rear roller position, turn the adjusting nut assembly ‘B’  
both ends clockwise to decrease height of cut ‘E’ or anti-clockwise  
to increase height of cut ‘E’.  
F
E
1D876P06B  
IMPORTANT: PREVENT DAMAGE - Do not attempt to  
unlock the nut assemblies, ‘B’.  
To alter the front roller position loosen bolts ‘F’. Release and turn  
adjusting nuts ‘D’ both ends clockwise to increase the height of cut  
or anti-clockwise to decrease the height of cut.  
Ensure that all cutterheads are set at the same height of cut by  
referring to the indicator rings ‘C’ or use the height of cut gauge  
across the full width of each cutterhead as shown.  
C
=
E
1D876P10A  
Tighten nuts ‘D’ and ‘F’ both ends.  
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1.45  
1.45  
MAINTENANCE  
MAINTENANCE  
WARNING : PREVENT ACCIDENTS - When carrying out maintenance procedures it is essential that:  
- The engine is switched off and the ignition key removed.  
- The parking brake is applied.  
- There is no pressure in the hydraulic system.  
- The cutterheads are fully down on the ground.  
- The safety precautions in this manual have been read and understood.  
WARNING : PREVENTACCIDENTS - Stored energy devices and systems are used on the T424 mower.  
It is essential that this stored energy is safely dissipated before maintenance or other service or operations  
are performed on these devices and systems on the machine.  
Dissipate stored energy as described below:  
Hydraulics:  
Transmission System - Ensure that the machine is on level ground, engage the parking brake and switch the  
engine off. Depress the forward and reverse travel pedals alternatively several times.  
Cutterhead Lift System - Lower the cutterheads to the ground and switch the engine off. Raise and lower  
the lift levers several times leaving them in the ‘down/float’ position.  
Cutterhead Drive System - Lower the cutterheads to the ground with the cutterhead drive switch in the ‘off’  
position and switch the engine off.  
Wing Cutterhead Springs - Lower the wing cutterheads to the ground.  
Operator Platform Gas Spring - Raise the platform fully.  
IMPORTANT: PREVENT DAMAGE: Regular maintenance is essential for the continued safe oper-  
ation of the machine. Correct servicing will prolong the working life of the machine and  
safeguard the "Hayter Warranty". Always fit genuine 'Hayter service parts' as these are  
accurately matched to the required duty.  
Dirt and contamination are the enemies of any hydraulic system. When carrying out maintenance  
procedures on the hydraulic system always ensure that the work area and the components are  
thoroughly clean before, during and after refitting. Ensure that all open hydraulic lines and ports, etc. are  
plugged during maintenance procedures.  
The recommended service intervals are based on normal operating conditions. Severe or unusual  
conditions will necessitate shorter service intervals.  
ALWAYS grease pivot points immediately after pressure washing or steam cleaning, refer - EVERY 50  
HOURS, GREASE PIVOT POINTS.  
WARNING: PREVENT ACCIDENTS - The engine, transmission oil and hydraulic systems will be hot  
after machine use. Allow the systems to cool before working on the machine, particularly before work-  
ing on the engine or when changing oil or oil filters.  
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1.46  
MAINTENANCE  
1.46  
MAINTENANCE  
Continued.  
WARNING : PREVENT ACCIDENTS - Use hazardous substances carefully.  
The following fluids are identified as being hazardous;  
Substances  
Assessed risk  
Diesel oil  
Low  
Low  
Low  
Low  
Lubricating oil  
Hydraulic oil  
Grease  
Anti - freeze  
Battery acid  
Medium  
High  
When using any of the above fluids it is recommended that eye protection and gloves are worn and  
that care is taken to prevent spillage.  
Avoid contact with skin; wash off spillage with soap and water.  
In the case of battery acid drench with water and seek medical attention. Remove any contaminated  
clothing and clean thoroughly before use.  
Avoid contact with eyes; wash with running water and seek medical attention if symptoms persist.  
In the case of battery acid, seek medical attention immediately.  
Avoid ingestion; if swallowed seek medical attention.  
Keep clear of high pressure fluid escaping from pinholes, cracked connections etc. High pressure  
fluid can penetrate the skin. Seek immediate medical advice if any fluid is injected into the skin.  
Always use a piece of cardboard or paper when searching for leaks.  
CAUTION: PREVENT ENVIRONMENTAL DAMAGE - Dispose of hazardous substances  
correctly.  
When disposing of hazardous waste products, take them to an authorised disposal site.  
Waste products must not be allowed to contaminate surface water, drains or sewerage systems.  
CAUTION: PREVENT ENVIRONMENTAL DAMAGE - Dispose of a  
used battery correctly. The battery has a separate collection mark. This  
means that the battery must not be disposed of with general waste. It  
must be taken to an authorised disposal site  
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1.47  
1.47  
MAINTENANCE  
ENGINE  
ENGINE  
Refer to the Engine Operator's Manual for maintenance information.  
RUNNING IN PERIOD  
Check wheel nut torque settings:  
During first 50 hours of use and in addition to routine checks. Refer -  
DAILY AND BEFORE USE. Check wheel nut torques twice a day.  
Front axle wheel nut torque setting - 200 Nm.  
Rear axle wheel nut torque setting - 54 Nm.  
RUNNING IN PERIOD - AT FIRST 50 HOURS  
Change the transmission oil filter: Unscrew and remove the bottom of the  
transmission oil filter housing. Withdraw the filter element and discard. Refit  
a new filter element (Hayter part no. 924708) and replace the housing.  
3
1
1. Transmission Oil Filter.  
2. Centre Cutterhead.  
3. Hydraulic Oil Tank.  
2
1P953C17  
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1.48  
MAINTENANCE  
1.48  
RUNNING IN PERIOD - AT FIRST 50 HOURS  
Continued.  
Change the hydraulic oil return filter: Unscrew and remove the  
return filter canister and discard. Refit a new filter canister (Hayter  
part no. 924692).  
Left Hand Side of Machine  
2
1
1P953C16A  
1. Hydraulic oil return filter.  
2. Engine fuel filter.  
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1.49  
1.49  
MAINTENANCE  
DAILY AND BEFORE USE  
Check engine oil level: If the oil level is below the upper mark on the  
dipstick, top up with the correct grade of engine oil to the required level,  
refer - ENGINE MANUAL.  
Check engine radiator coolant level:  
ONLY REMOVE RADIATOR CAP WHEN ENGINE IS COOL.  
IL FAUT TOUJOURSATTENDRE LE REFROIDISSEMENT DU MOTEUR  
ANT DE RETIRER LE BOUCHON DU RADIATEUR.  
WARNING: PREVENT ACCIDENTS - Avoid scalding. DO NOT  
remove the radiator filler cap unless the engine is cool. Turn the filler  
cap slowly to release system pressure before removing the filler cap  
completely.  
AV  
VERWIJDER DE RADIATORDOP PAS NADAT DE MOTOR ISAFGEKOELD.  
HEIZKORPERDECKELENTFERNEN ERST WENN DER MOTOR KUHLIST.  
70-13-073 REV (.0.)  
Keep coolant between “Full” and “Low” when engine is cold at all times.  
Full  
Low  
4P994C13A  
Cleaning the air cleaner: Remove the air filter and tap it repeatedly with  
the palm of the hand to remove dust particles. DO NOT damage the air  
filter by hitting it against a hard object. Inspect the air filter for signs of  
damage.  
3
2
1
1D950R13A  
IMPORTANT: PREVENT DAMAGE - Always replace a damaged  
air filter or damage to the engine will result. NEVER run the engine  
without the air filter correctly fitted.  
1. Air filter  
2. Dust bowl  
3. Dust boot  
Clean the inside of the cleaner dust bowl with a dry cloth and check that  
the dust boot is unobstructed.  
Replace the air filter and assemble the dust bowl, with the dust boot  
facing below horizontal level.  
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1.50  
MAINTENANCE  
1.50  
DAILY AND BEFORE USE  
Continued.  
2
Clean the radiator screen: Clean the radiator screen. Check  
the oil cooler and engine radiator grille for debris and clean as  
necessary, using a brush or airline. If water is used, these  
areas should be allowed to dry out completely before use.  
1
3
IMPORTANT: PREVENT DAMAGE - NEVER operate  
the mower with a damaged radiator screen or engine  
damage could result from overheating. Clean the radiator  
screen more regularly in dry conditions.  
1P953C14A  
1. Radiator screen.  
2. Oil cooler  
3. Radiator  
Check fuel level: Top up as necessary with diesel fuel.  
Always top up before storing the mower over-night to prevent  
water condensation from contaminating the fuel.  
D
Check hydraulic oil level: If the oil level is below the upper  
mark on the sight level gauge, top up with the correct grade  
of hydraulic oil as necessary, refer- SPECIFICATIONS.  
4
3
WARNING : PREVENT DAMAGE - If there is  
noticeable hydraulic oil loss, the leakage source must be  
rectified before using the mower. NEVER operate the  
mower when the hydraulic oil level is below the bottom  
mark on the sight level gauge. NEVER operate the  
mower with contaminated oil.  
2
1D924P06B  
1
1. Sight level gauge  
2. Oil tank  
3. Oil filler cap.  
4. Fuel tank.  
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1.51  
1.51  
MAINTENANCE  
DAILY AND BEFORE USE  
Continued.  
Check hydraulic hose-lines: Inspect hydraulic hose-lines for signs of wear or damage.  
WARNING: PREVENTACCIDENTS - ALWAYS replace worn or damaged hydraulic hose-lines  
immediately. DO NOT operate the mower with defective hydraulic hose-lines.  
Inspect the mower for signs of oil leakage. Tighten fittings or replace seals as required.  
Check fasteners: Check that all nuts, bolts and pins are secured correctly  
in place and in good condition.  
Check safety devices:  
WARNING - PREVENT ACCIDENTS : Ensure that all safety guards,  
shields and protective devices are securely in place and in good working  
order.  
Check tyres: Examine the condition of the tyres and check that inflation  
pressures are correctly set, refer - SPECIFICATIONS.  
WARNING - PREVENT ACCIDENTS : Ensure that damaged tyres  
are replaced. Ensure that tyre tread depths comply with road traffic  
regulations.  
Grease all rear axle components including the centre axle beam pivot pin,  
both steering yokes and track rod ball joints, refer -EVERY 50 HOURS -  
Grease pivot points.  
Check cutterheads: Examine the condition of the cutting cylinders and bottom blades. Adjust as  
necessary, refer - MAINTENANCE - CUTTERHEAD CYLINDER TO BOTTOM BLADE  
ADJUSTMENT.  
Grease all cutterhead rollers with a good quality medium grade grease and ensure that sufficient grease  
is injected such that clean grease is seen to escape from the roller end caps, refer - MAINTENANCE -  
EVERY 50 HOURS.  
If no grease can be seen escaping from a roller end cap. It can be assumed that the rear seal has failed,  
resulting in the roller shell being filled with grease.  
Note: Care should be taken if an industrial power greaser is used as this may result in damage to  
the bearing sealing arrangement.  
Check forward/reverse travel pedal action: With the engine switched ‘off’, operate the forward and  
reverse travel pedals through the full range of articulation and ensure that the mechanism returns freely  
to the neutral position.  
WARNING - PREVENT ACCIDENTS: Do not operate the machine if there are any signs of  
‘Stickiness’ in the pedal mechanism which prevents a free return to the neutral condition.  
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1.52  
MAINTENANCE  
1.52  
DAILY AND BEFORE USE  
Continued.  
Check operator presence controls:  
WARNING : PREVENT ACCIDENTS - Keep bystanders away when checking operator  
presence control interlock switches. DO NOT use the mower unless the operator presence con-  
trols work correctly as described below. If difficulties arise, consult your "Hayter dealer”.  
Operator presence seat switch: Sit on the operator seat and start the engine. Lower the cutterheads  
to the ground and engage the cutter drive in the forward direction. Rise from the operators seat and  
check that the cutting cylinders come to a stop after an initial 0.5 to 1 second delay. Repeat with the  
cutting cylinders running in reverse.  
Cutter drive interlock switch: Stop the mower engine. Operate the cutter drive switch to the ‘off’  
position and turn the ignition key to position ‘I’. The cutterhead drive switch indicator light should illu-  
minate. Refer - OPERATING THE MOWER.  
Operate the switch to the ‘forward’ position. The indicator light should go out and the engine should  
not start when the ignition key is turned. Repeat for the ‘reverse’ position.  
Parking brake interlock switch: Stop the engine. Engage the parking brake and turn the ignition key  
to position ‘I’. The parking brake indicator light should illuminate. Refer - OPERATING THE  
MOWER.  
Disengage the parking brake. The indicator light should go out and the engine should not start when  
the ignition key is turned.  
Transmission neutral interlock switch: Stop the mower engine and remove the foot from the for-  
ward/reverse travel pedals. Turn the ignition key to position 'I’ and the transmission neutral indicator  
light should illuminate. Application of light pedal pressure in a forward and reverse direction should  
cause the indicator light to go out. Take extreme care to ensure that the area around the mower is clear  
before checking that the engine will not start under this condition.  
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1.53  
1.53  
MAINTENANCE  
EVERY 50 HOURS  
Perform routine checks : Refer - DAILY BEFORE USE.  
Check cutterhead roller bearing adjustment:  
IMPORTANT : PREVENT DAMAGE - It is essential that  
the cutterhead roller bearings are kept in good adjustment  
in order to ensure maximum working life. If end float is  
allowed to become excessive, premature bearing failure will  
result.  
A
Grip the roller and move from side to side and up and  
down. If excessive movement is detected, proceed as fol-  
lows:  
3D924S001A  
Carefully tighten nuts ‘Aat each end of the roller with the  
spanner provided, just sufficiently to remove any end float.  
Note: The roller should still rotate freely after adjustment.  
Overtightening of nuts ‘A’ could lead to premature bearing  
failure.  
Check cutterhead rear roller scraper wire tension:  
It is important that the scraper wires are correctly tensioned so  
as to ensure correct operation and maximum working life.  
Carefully tighten the scraper wire retaining nuts ‘Bso as to just  
remove any slack from the scraper wires and then tighten nuts  
‘B’ a further four full turns to correctly tension the wires.  
B
IMPORTANT: PREVENT DAMAGE - Do not over tighten  
the scraper wires.  
B
Check wheel nut torque settings:  
Front axle wheel nut torque setting - 200Nm.  
Rear axle wheel nut torque setting - 54 Nm.  
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1.54  
MAINTENANCE  
1.54  
EVERY 50 HOURS  
Continued.  
Grease pivot points : Clean and grease all grease points with a  
good quality compound of the grade specified, refer -  
SPECIFICATIONS.  
Replace any grease nipples which are damaged.  
Grease all cutterhead grease points and ensure that sufficient  
grease is injected such that clean grease is seen to escape from  
the roller end caps. This provides visible evidence that the roller  
seals have been purged of grass debris etc. and will ensure  
maximum working life.  
Grease every 50 hours (Weekly)  
Grease daily  
Medium grade grease  
Medium grade grease  
Medium grade grease (if fitted)  
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
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1.55  
1.55  
MAINTENANCE  
EVERY 250 HOURS  
Perform routine checks : Refer - DAILY BEFORE USE.  
- EVERY 50 HOURS.  
Check battery condition :  
WARNING : PREVENT ACCIDENTS - Explosive gases are produced by the battery. Work in a well  
ventilated area, away from all sources of ignition.  
Battery fluids are corrosive. Take care to avoid contact with the skin or eyes. In the event of a spillage,  
drench the affected area with water. If the eyes are affected, seek medical attention. Remove any cont-  
aminated clothing and clean thoroughly before use.  
When removing the battery, always disconnect the negative (-) cable first.  
When replacing the battery, always connect the negative (-) cable last.  
Remove the tool tray to gain access to the battery. Remove any corrosion from the battery terminals using a wire  
brush and apply petroleum jelly to the terminals to prevent further corrosion. Clean the battery compartment.  
Under normal operating conditions the battery will not require any further  
attention. If the machine has been subject to continuous use under high  
ambient temperature conditions, the battery electrolyte may require topping  
up. Remove the cell covers and top up with distilled water to a height 15mm  
below the top of the battery. Replace the cell covers.  
2
IMPORTANT : PREVENT DAMAGE - Check the condition of the  
battery cables. Replace cables showing signs of wear or damage and  
tighten any loose connections as necessary.  
1. Battery  
2. Tool Tray  
1
Visually inspect transmission control cable and operating mechanism:  
Check the condition and security of the cable and operating mechanism at the travel control pedals and trans-  
mission pump ends.  
Outer Cover  
Rubber Seal Sleeve  
Rubber Seal Rod End  
-
-
Remove build up of dirt, grit and other deposits.  
Ensure that the ball joints are securely anchored and  
check that mounting brackets and cable anchors are  
tight and free from cracks.  
-
Inspect end fittings for wear, corrosion, broken springs  
and replace if necessary.  
Ensure that the rubber seals are correctly located and in good condition.  
Ensure that the articulating sleeves supporting the inner cable are in good condition and firmly attached to  
the outer cable assembly at the crimped connections. If there are any signs of cracking or detachment fit  
new cable immediately.  
-
-
-
Check that sleeves, rods and inner cable are free from bends, kinks and other damage. If there are any signs  
of such failure, fit a new cable immediately.  
Check the condition of the neutralising device and replace if worn.  
With the engine switched ‘Off’, operate the pedal controls through the entire range and ensure that the  
mechanism moves smoothly and freely to the neutral position without ‘Sticking’ or ‘Hanging up’.  
-
-
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1.56  
MAINTENANCE  
1.56  
EVERY 500 HOURS  
Perform routine checks : refer  
- DAILY BEFORE USE.  
- EVERY 50 HOURS.  
- EVERY 250 HOURS.  
Thoroughly clean the machine:  
IMPORTANT: PREVENT DAMAGE - Keep water away from electrical components. Use a dry  
cloth or brush to clean such areas.  
Service the hydraulic system : This procedure is best carried out when the hydraulic oil is warm (not  
hot). Lower the cutterheads to the ground and drain the hydraulic system by removing the hydraulic tank  
drain plug. Remove the oil tank filler flange to gain access to the suction strainer. Unscrew and remove  
the strainer and clean with paraffin or petrol before replacing. Renew the strainer if there are any signs  
of damage.  
Remove the oil filler cap strainer and clean before replacing. Renew the strainer if there are any signs  
of damage.  
Renew the return line oil filter element, refer - RUNNING IN PERIOD AT FIRST 50 HOURS.  
Renew the transmission oil filter element, refer - RUNNING IN PERIOD AT FIRST 50 HOURS.  
Replace the drain plug and refill the hydraulic tank with fresh clean hydraulic oil of the recommended  
grade, refer - SPECIFICATIONS.  
Run the machine and operate all hydraulic systems until the hydraulic oil is warm. Recheck the oil level  
and top up as necessary to the upper mark on the sight level gauge.  
4
2
3
1
1. Drain plug  
2. Oil tank filler flange  
1D924P05C  
3. Suction strainer  
4. Filler strainer  
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1.57  
1.57  
MAINTENANCE  
Continued.  
EVERY 500 HOURS  
ENGINE  
Renew the engine air cleaner filter: Check the condition of the air cleaner  
hoses. Replace any hose which is damaged and tighten the connections, refer -  
ENGINE MANUAL.  
ENGINE  
Renew the engine fuel filter element: Refer - ENGINE MANUAL.  
Check electrical system: Inspect all electrical connections and cables and replace any which are damaged  
or corroded. Spray a good quality water inhibitor on to exposed connections to prevent moisture ingress.  
Check rear wheel alignment: To prevent excessive tyre wear and ensure safe machine operation, the rear  
wheels must be correctly aligned to ‘toe - in’ by 3 - 8mm.  
Set the rear wheels in the straight ahead position. Measure and compare the distance between the front  
sidewalls and the rear sidewalls at the wheel centre height. The distance between the front sidewalls must  
be set 3 - 8mm less than the distance between the rear sidewalls.  
2
3
1
4
1. Wheel centre height  
2. Tyre  
3. Direction of forward travel  
4. Track-rod assembly  
To adjust the alignment of the rear wheels, first back off the left hand and right hand locknuts on the track  
rod assembly. (Left hand locknut is a left hand thread). Rotate the track rod to achieve the correct  
‘toe - in’ as described above and tighten the locknuts securely.  
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1.58  
MAINTENANCE  
1.58  
EVERY 500 HOURS  
Continued.  
Check the engine overheat warning system: Turn the ignition key to the ‘ignition on’ position 'I'.  
Disconnect the red/grey wire terminal from the engine temperature switch and touch the metal terminal of  
this wire onto a suitable earth point, ensuring that the metal surfaces make good contact. The horn will  
sound and the engine coolant temperature warning light will illuminate to confirm correct operation. If the  
system is faulty, make repairs before operating the mower.  
1
1. Temperature switch.  
Check the hydraulic oil overheat warning system: Turn the ignition key to the ‘ignition on’ position 'I'.  
Disconnect the red/blue wire terminal from the hydraulic tank temperature switch and touch the metal  
terminal of the wire onto a suitable earth point, ensuring that the metal surfaces make good contact. The  
horn will sound and the hydraulic oil temperature warning light will illuminate to confirm correct  
operation. If the system is faulty, make repairs before operating the mower.  
1
2
1. Temperature switch  
2. Hydraulic oil tank  
1P953C15A  
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1.59  
1.59  
MAINTENANCE  
CUTTERHEAD CYLINDER TO BOTTOM BLADE ADJUSTMENT  
IMPORTANT : PREVENT DAMAGE - It is essential that the  
relationship between the bottom blades and the cutting cylinders is  
kept in good adjustment in order to ensure good cutting performance,  
minimum power consumption and prolonged life for the cutting  
edges.  
Carry out the following procedure before commencing work and re-check  
the settings every few hours.  
900  
Check that the cutting cylinder is correctly set to the bottom blade by  
holding a thin piece of paper between the cutting cylinder and the bottom  
blade as shown. Carefully rotate the cylinder as shown and check that the  
paper is cut cleanly at all points along the length of the blade. Hold the  
paper at 90 degrees (right angles) to the bottom blade to obtain the correct  
cutting action.  
WARNING: PREVENT ACCIDENTS - Ensure that people are clear  
of the cutting cylinders as rotation of one may cause others to rotate.  
B
If adjustment is necessary proceed as follows;  
Release nut 'A' 1/4 turn both ends.  
Turn handwheel 'B' each end alternately whilst rotating the cutting  
cylinder backwards until the bottom blade is in 'fleeting' contact with the  
cylinder along its entire length. Re-check the cutting action along the  
length of the bottom blade using a thin piece of paper making marginal  
adjustments as necessary.  
A
Tighten nut 'A' both ends.  
If it is impossible to obtain a good clean paper cut across the entire length of the bottom blade it will  
be necessary to carry out the backlapping procedure to reprocess the cutting edges. In severe cases it  
will be necessary to regrind the cutting cylinder and the bottom blade, refer - BACKLAPPING /  
GRINDING.  
Do not be tempted to over-adjust causing heavy contact between the cylinder and bottom blade as this  
will cause very rapid uneven wear to take place, leading to tramlining and waviness of the cutting  
edges. The frictional losses will be high and a significant amount of power will be absorbed thus reduc-  
ing the power available for cutting. The heating effect due to friction will cause excessive expansion  
to take place which will further aggravate the situation by increasing the contact pressure.  
If the cutterheads are allowed to operate for more than a few hours without adjustment the running  
wear will eventually cause the cylinder to run out of contact with the bottom blade. At this stage very  
rapid rounding of the cutting edges will occur as grass and abrasive particles pass through the  
clearance between the blades.  
Lack of attention to adjustment can therefore be foolhardy as maintenance costs will escalate. Quality  
of cut will also be seriously affected as will the health and growth of the grass.  
An experienced operator will notice when a cutterhead starts to go out of adjustment, when the grass  
ceases to be cut cleanly and the cut ends become ragged.  
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1.60  
MAINTENANCE  
1.60  
CUTTERHEAD BACKLAPPING  
This process is recommended for restoring the sharp cutting edges to  
cylinders and bottom blades which are essential for good quality grass  
cutting.  
This process can only deal with a small amount of metal removal to restore  
the cutting edges. If the blade edges are seriously worn or damaged it will  
be necessary to remove the component parts and have them reground.  
The backlapping process:  
1. Check that the mower engine is switched off and the parking brake applied.  
2. Adjust the cutting cylinders to the bottom blades to obtain ‘fleeting contact’.  
3. Apply a medium grade detergent based carborundum paste to the cutting  
edges of the cylinders with a long handled brush.  
80 Grade Carborundum paste  
Hayter Part No:  
0,45 kg  
63-07-088  
63-07-086  
11,25 kg  
4. Ensure that the area surrounding the cutterheads is clear of people and keep  
hands and feet clear of the cutting cylinders during the period when the  
mower engine is running.  
5. Sit on the operator seat, start the mower engine and set the engine speed at  
idle.  
6. Operate the cutterhead drive switch to the 'reverse/backlap' position for a  
period of time and listen to the grinding action .  
7. Operate the cutterhead drive switch to the 'off' position and switch off the  
mower engine when the grinding action has stopped.  
900  
8. Thoroughly clean the blade edges and adjust the cutting cylinders to the  
bottom blades. Check that a thin piece of paper can be cut cleanly at all  
points along the cutting edges while rotating the cylinders by hand.  
9. If further backlapping is necessary repeat steps 2 to 8.  
10. Thoroughly remove and wash off all traces of the carborundum paste from  
the cylinders and bottom blades.  
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1.61  
1.61  
MAINTENANCE  
CUTTERHEAD GRINDING  
It will be necessary to carry out a grinding operation to correct cylinder spiral edges or bottom blade  
edges which have become excessively rounded or distorted. Bottom blades which are nearing the end  
of their wear life should be replaced. The new blades should be ground on their holders prior to fitting,  
refer - CUTTERHEAD BOTTOM BLADE REPLACEMENT. When grinding operations are necessary  
it is essential that both cylinders and bottom blades are ground at the same time. The only exception to  
this rule is when a new cylinder is fitted in which case it is only necessary to grind the bottom blade.  
All such grinding operations should be carried out by your dealer on a quality, well maintained  
cylinder/ bottom blade grinding machine.  
CUTTERHEAD BOTTOM BLADE REPLACEMENT  
Remove the bottom blade holder by removing the three fixing bolts at each end and withdraw from the  
cutterhead. Remove the worn bottom blade and discard the countersunk screws and securing nuts. Fit  
the new blade to the holder and loosely assemble with new countersunk screws and securing nuts.  
Tighten the centre bolts to a torque of 40 Nm. Continue by tightening the remaining bolts to the same  
torque by working from the centre out towards the blade ends.  
The new bottom blade must be ground on its holder prior to refitting to the cutterhead.  
Adjust the cutting cylinder position to give adequate clearance for fitting the new bottom blade holder.  
Refit the bottom blade holder assembly to the cutterhead using the original fixing bolts and tighten to  
a torque of 35 Nm. Finally adjust the cylinder to the bottom blade, refer - CUTTERHEAD CYLINDER  
TO BOTTOM BLADE ADJUSTMENT.  
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1.62  
MAINTENANCE  
1.62  
RAISING THE MOWER OFF THE GROUND  
WARNING: PREVENT ACCIDENTS - Before raising the mower ensure that:  
-
The lifting device to be used is in good condition and capable of supporting the weight of the  
mower securely. Minimum lift capacity 2000 Kg.  
-
-
-
-
-
-
The mower is on level ground.  
The parking brake is applied.  
The engine is switched off and the ignition key removed.  
The ground under the lifting device is level and firm.  
The lifting device is secure against one of the mower lifting points.  
If raising the front of the mower, both of the rear wheels must be chocked securely to prevent the  
mower rolling away. Note that the parking brake only operates on the front wheels.  
WARNING: PREVENT ACCIDENTS - When the mower is raised off the ground:  
NEVER crawl under the mower.  
-
-
NEVER start the engine.  
1. Front left hand lifting point  
2. Front right hand lifting point  
3. Rear towing eye and lifting point  
4. Front towing eye  
4
1
2
3
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1.63  
1.63  
MAINTENANCE  
TOWING THE MOWER  
Towing procedure : Connect a rigid tow bar between the towing eye on the mower and a suitable  
towing vehicle. Ensure that the towing vehicle specification is suited to braking the combined vehicle  
weight to rest whilst effecting complete control at all times. Ensure that the towing vehicle’s parking  
brake is applied. Chock the mower front wheels to prevent the mower rolling away.  
De-commission the front wheel motor disc brakes as follows :-  
i) Identify the right hand front wheel motor disc brake assembly and remove the rubber plug (item 2).  
Position a M12 x 40mm long setscrew (item 5) with washer (item 4) through the brake release bar (item  
3) and into the hole in the centre of the motor end plate. Tighten the setscrew (item 5) into the  
threaded hole in the brake piston until the brake is released.  
ii) Identify the left hand front wheel motor disc brake assembly and repeat the previous procedure.  
1
3
4
5
2
1D950R01  
1. Front wheel motor.  
2. Rubber plug.  
2
3. Brake release bar.  
4. Washer - M12 - (09485).  
5. Setscrew M12 x 40 - (ZDH1L040U).  
1D950R02  
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1.64  
MAINTENANCE  
1.64  
TOWING THE MOWER  
Continued.  
Bypass Valve  
De-commission the hydraulic service braking system as follows:-  
Open the transmission bypass valve situated as shown on top of the  
transmission pump.  
The valve is fully open at 3 anti-clockwise revolutions. Do not open  
the valve past 3 revolutions.  
The steering must be operated manually when the mower is being  
towed. The steering will feel heavy as there is no hydraulic assis-  
tance when the engine is switched off.  
The mower is now in a freewheel condition and can be towed for a  
short distance at slow speed.  
Remove wheel chocks before towing.  
After towing the mower: To return the mower to its normal work-  
ing condition the following procedure must be adopted.  
Chock the front wheels and re-commission the hydraulic service  
braking system as follows :-  
i) Close the transmission bypass valve. Turn clockwise and  
tighten to a torque of 48- 52 Nm.  
1
Re-commission the front wheel motor disc brakes as follows :-  
3
i) Identify the right hand front wheel motor disc brake assembly.  
Rotate the setscrew (item 5) anti-clockwise and remove together  
with washer (item 4) and brake release bar (item 3). Reassemble the  
rubber plug (item 2) into the motor end plate.  
4
5
2
ii) Identify the left hand front wheel motor disc brake assembly and  
repeat the previous procedure.  
1D950R01  
1. Front wheel motor.  
2. Rubber plug.  
3. Brake release bar.  
4. Washer - M12 - (09485).  
5. Setscrew M12 x 40 - (ZDH1L040U).  
Store the brake release bars, washers and setscrews (items 3, 4 and  
5) for future use.  
Remove the wheel chocks.  
Disconnect the tow bar.  
The mower braking system will now operate in the normal way.  
WARNING: PREVENT ACCIDENTS - Before using the  
mower, ensure that the braking system operates correctly.  
Carry out initial checks with the mower at slow speed.  
Do not operate the mower with a defective braking system.  
Do not operate the mower with the brakes de-commissioned.  
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1.65  
1.65  
GRASS CUTTING FAULTS  
GRASS CUTTING FAULTS  
FAULT  
POSSIBLE CAUSE  
REMEDY  
Areas of uncut grass at  
point of overlap between  
cutting cylinders.  
Turning too tightly.  
Reduce turning radius.  
Mower sliding sideways  
when travelling across face of a slope.  
Mow up/down slope.  
One end of cutterhead out  
of ground contact caused by:  
- Poorly routed hoses or wrongly  
positioned hydraulic adaptors.  
Reroute hoses/reposition  
hydraulic adaptors.  
- Pivot pins seizing.  
Free off and grease pivot pins.  
Remove grass.  
- Grass build up under cutterhead.  
Ridge lines in the cut  
across the direction of  
travel over full width.  
Forward speed too high.  
Cylinder speed too slow.  
Height of cut too low.  
Reduce forward speed.  
Increase mower engine speed.  
Raise height of cut.  
Ridge lines in the cut  
grass across the direction  
of travel over the cutting  
width of one cylinder.  
Cylinder is running slow.  
Refer - TROUBLE  
SHOOTING for remedy.  
Step in cut grass height  
at point of overlap  
between cutting cylinders.  
Inconsistent height of cut setting on one  
cylinder.  
Check and readjust height of  
cut setting.  
Raise/Lower position control not in float  
position.  
Operate position control  
to float position.  
One end of cutterhead out  
of ground contact caused by:  
- Poorly routed hoses or wrongly  
positioned hydraulic adaptors.  
Reroute hoses/reposition  
hydraulic adaptors.  
- Pivot pins seizing.  
Free off and grease pivot pins.  
Remove grass.  
- Grass build up under cutterhead.  
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1.66  
GRASS CUTTING FAULTS  
1.66  
GRASS CUTTING FAULTS  
Continued.  
POSSIBLE CAUSE  
Cutting cylinder is partially  
out of contact with  
the bottom blade.  
FAULT  
REMEDY  
Readjust cutting cylinder to  
bottom blade.  
Some uncut or poorly  
cut strands of grass..  
Readjust cutting cylinder to the  
bottom blade.  
Cutting cylinder is in heavy  
contact with the bottom  
blade.  
Lower height of cut  
setting.  
Height of cut is too  
high.  
Backlap or regrind to  
restore cutting edges.  
Cutting edges of cutting  
cylinders/bottom blades  
are rounded.  
Backlap or regrind  
to restore cutting edges.  
Lines of uncut or badly  
cut grass in direction of  
travel.  
Tramlining of cutting  
edges due to heavy  
contact caused by poor cutting cylin-  
der to bottom blade adjustment.  
Raise height of cut.  
Bottom blade in ground  
contact.  
Readjust cutterhead to  
ensure bottom  
Nose down attitude of  
bottom blade.  
blade is parallel  
to ground.  
Reduce forward speed.  
Reduce weight transfer.  
Cutterheads bouncing.  
Replace worn parts.  
Worn cylinder bearings/bearing hous-  
ing pivots.  
Check and retighten as  
necessary.  
Loose components in cutterhead.  
Undulations too severe  
for height of cut setting.  
Use floating cutterheads.  
Raise height of cut.  
Scalping.  
Height of cut too low.  
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1.67  
1.67  
GRASS CUTTING FAULTS  
GRASS CUTTING FAULTS  
Continued.  
POSSIBLE CAUSE  
FAULT  
REMEDY  
Bottom blade in heavy  
ground contact.  
Excessive bottom blade  
wear..  
Raise height of cut.  
Cutting edges of the cutting  
cylinder/bottom blade  
are rounded.  
Backlap or regrind to restore  
cutting edges.  
Cylinder is in heavy  
contact with the bottom  
blade.  
Readjust the cutting cylinder to  
the bottom blade.  
Damaged cutting cylinder or  
bottom blade.  
Regrind or replace as necessary.  
Raise height of cut.  
Excessively abrasive ground  
conditions.  
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1.68  
TROUBLE SHOOTING  
1.68  
TROUBLE SHOOTING  
When using the following chart it may be found that overhaul of major components or hydraulic  
pressure adjustments are necessary. In this case it is recommended that your dealer make these repairs  
as he is properly equipped to do this work.  
WARNING: PREVENT ACCIDENTS - ALWAYS Apply the parking brake, switch off the engine  
and remove the ignition key before attempting to work on the mower.  
PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Engine will not start with  
ignition key.  
Transmission neutral interlock  
switch not energised.  
Remove foot from  
forward/reverse travel pedal.  
Check setting of transmission  
neutral interlock switch.  
Parking brake interlock switch  
not energised.  
Operate parking brake lever to  
the ‘ON’ position.  
Check setting of parking brake  
interlock switch.  
Cutterhead drive interlock  
switch not energised.  
Move cutterhead drive switch to  
the ‘OFF’ position.  
Check setting of cutterhead  
interlock switch.  
Faulty electrical connection.  
Trace and correct fault.  
For all other engine problems, refer - ENGINE HANDBOOK.  
Flat Battery.  
Terminal connection  
loose or corroded.  
Clean and tighten  
terminal connections.  
Recharge battery.  
Loose or defective  
alternator belt.  
Re-tension or replace  
drive belt, refer  
- ENGINE HANDBOOK.  
Defective battery.  
Recharge battery.  
Replace battery.  
Electrical short circuit.  
Trace short circuit and  
make good.  
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1.69  
1.69  
TROUBLE SHOOTING  
TROUBLE SHOOTING  
Continued.  
REMEDY  
PROBLEM  
POSSIBLE CAUSE  
Check switch and  
replace if necessary.  
Differential lock  
non operational.  
Defective switch.  
Service or replace  
solenoid valve.  
Defective solenoid  
valve.  
Check wiring/connections as  
necessary.  
Defective wiring.  
Clean screen.  
Clean fins.  
Hydraulic oil sys-  
tem overheating.  
Blocked radiator  
screen.  
Blocked oil cooler  
fins.  
Clean matrix.  
Blocked engine  
radiator matrix.  
Have relief valve cleaned and  
pressure checked. Consult  
your Hayter dealer.  
Low relief valve  
setting.  
Fill reservoir to  
correct level.  
Low oil level.  
Disengage brakes.  
Readjust settings.  
Brakes engaged.  
Cutting cylinders  
tight on bottom  
blades.  
Check fan operation  
and service as required.  
Defective fan or fan  
drive.  
Consult your Hayter dealer.  
Incorrect brake  
operation.  
Faulty wheel motor  
brake assembly.  
Replace brake discs.  
Consult your Hayter dealer.  
Worn brake discs.  
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1.70  
TROUBLE SHOOTING  
1.70  
TROUBLE SHOOTING  
Continued.  
REMEDY  
PROBLEM  
POSSIBLE CAUSE  
Release parking brake.  
Lack of transmission  
drive.  
Parking brake engaged.  
Fill reservoir to  
correct level.  
Low oil level.  
Drain reservoir and  
refill with correct  
oil.  
Incorrect oil used.  
Check linkage and  
replace defective  
parts.  
Defective travel pedal  
linkage.  
Have the transmission  
pump overhauled by  
your Hayter dealer.  
Defective transmission  
pump.  
Close relief valve,  
refer - MAINTENANCE -  
TOWING THE MOWER.  
Transmission relief valve  
open.  
Replace drive  
coupling.  
Broken drive coupling.  
Replace transmission  
filter.  
Transmission filter  
blocked.  
Readjust transmission neutral  
setting.  
Forward/backward transmission  
creep in neutral.  
Transmission neutral ad-  
justment incorrectly set.  
Check switch and replace if neces-  
sary.  
Service or replace solenoid valve.  
Work/transport modes non-oper-  
ational  
Defective control switch.  
Defective solenoid valve.  
Defective wiring.  
Check wiring connections and  
repair/replace as necessary.  
Service or replace  
steering valve.  
Lack of steering.  
Defective steering valve.  
Service or replace  
hydraulic cylinder.  
Defective hydraulic  
cylinder.  
Replace defective hose.  
Damaged steering hose.  
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1.71  
1.71  
TROUBLE SHOOTING  
TROUBLE SHOOTING  
Continued.  
PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Excessive noise in  
hydraulic system.  
Faulty pump.  
Identify noisy pump  
and service or  
replace.  
Faulty motor.  
Identify noisy motor  
and service or  
replace.  
Air leaking into system.  
Tighten or replace  
hydraulic fittings  
particularly in  
suction lines.  
Suction strainer blocked or  
damaged.  
Clean and replace  
suction strainer or renew  
as necessary.  
Excessive oil viscosity  
due to cold conditions.  
Allow system to warm  
up.  
Low relief valve setting.  
Have relief valve cleaned  
and pressure checked.  
Consult your Hayter dealer.  
Low hydraulic oil level.  
Fill hydraulic oil  
reservoir to correct  
level.  
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1.72  
TROUBLE SHOOTING  
1.72  
TROUBLE SHOOTING  
Continued.  
PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Replace as necessary.  
After initial satisfactory  
operation machine loses  
power.  
Worn pump or motor.  
Fill hydraulic oil tank  
to correct level.  
Low hydraulic oil level.  
Renew oil in hydraulic tank with  
hydraulic oil of correct viscosity  
grade, refer - SPECIFICATIONS.  
Incorrect oil viscosity.  
Change filter element.  
Oil filter element  
blocked.  
Have relief valve cleaned and  
pressure checked. Consult your  
Hayter dealer.  
Faulty pressure relief valve.  
Check cylinder to bottom blade  
adjustment. Reduce workrate i.e.  
increase height of cut or reduce  
forward speed.  
Overheating.  
Incorrect hydraulic oil  
grade, refer - Problem  
‘Hydraulic Oil System  
Overheating’.  
Check and tighten fittings.  
Replace hose if necessary.  
Leaks on suction hose.  
Remove high spot with a stone  
and backlap to restore cutting  
edges. Serious damage will  
necessitate regrinding.  
High spot on cylinder or  
bottom blade due to  
contact with foreign  
object.  
Cylinder "knocks" while  
rotating.  
Replace as necessary.  
Worn cylinder bearings.  
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1.73  
1.73  
TROUBLE SHOOTING  
TROUBLE SHOOTING  
Continued.  
PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Replace as necessary.  
Cutting cylinder bearing  
seized.  
One cylinder rotates  
slowly.  
Check motor and  
replace if necessary.  
Incorrect rotation motor  
fitted.  
Free off and lubricate or  
replace diverter valve  
as necessary.  
Diverter valve only  
partly open.  
Have check valve  
cleaned and checked.  
Motor integral check  
valve jammed open.  
Readjust setting.  
Replace motor.  
Replace seals.  
Cutting cylinder tight  
on the bottom blade.  
Motor worn.  
Lift cylinder seal failure.  
Cutterhead fails to lift  
out of work.  
Have relief valve  
cleaned and pressure  
checked. Consult your  
Hayter dealer.  
Pressure relief valve  
jammed open or wrongly  
set.  
Overhaul control  
valve.  
Defective control valve.  
Mechanical blockage.  
Remove blockage.  
Move cutterheads  
throughout extremes  
of movement and  
observe any tightness  
in the hoses. Correctly  
route hoses and  
Incorrect hose routing or  
incorrect orientation of  
hydraulic fittings.  
Cutterheads do not follow  
ground contours.  
orientate fittings as  
necessary.  
Free off and grease  
as necessary.  
Tightness in pivots.  
Move position control  
lever to 'float'  
position.  
Mower operated in ‘hold’  
position.  
Reduce weight transfer.  
Weight transfer set too high.  
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1.74  
TROUBLE SHOOTING  
1.74  
TROUBLE SHOOTING  
Continued.  
POSSIBLE CAUSE  
REMEDY  
PROBLEM  
Cutterheads fail to start  
up when lowered into work.  
Faulty seat sensor switch.  
Check mechanical and  
electrical operation  
of switch.  
Low oil level.  
Fill hydraulic oil  
reservoir to correct  
level.  
Diverter valve jammed.  
Sheared drive shaft.  
Free off and lubricate or  
replace the diverter  
valve as necessary.  
Check motor and  
cylinder drive shafts  
and replace if  
necessary.  
Pressure relief valve  
jammed open or wrongly  
set.  
Have relief valve  
cleaned and pressure  
checked. Consult your  
Hayter dealer.  
Cutting cylinder jammed.  
Free off as necessary.  
Readjust setting.  
Cutting cylinder tight on  
bottom blade.  
Cutterhead control valve  
in the ‘off’ position caused  
by:  
- Defective control  
valve.  
Overhaul control  
valve.  
- Electrical fault.  
Have electrical  
system checked.  
Cylinders rotate in  
wrong direction.  
Hoses wrongly connected.  
Check hydraulic  
circuit and reconnect  
as necessary.  
Cutterhead drive switch  
wrongly connected.  
Check switch  
electrical  
connections.  
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1.75  
ELECTRICAL CIRCUIT DIAGRAM  
1.75  
1
2
3
4
5
6
7
8
953910KG141004  
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1.76  
1.76  
ELECTRICAL CIRCUIT DIAGRAM  
ITEM NO.  
DESCRIPTION  
PART NO.  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
Switch - Parking Brake Interlock.  
Glow Plug Timer.  
Light - Parking Brake.  
Light - Glow Plugs.  
Light - Neutral.  
Light - Cutterhead Drive Off.  
Light - Return Filter.  
Light - Pressure Filter.  
Light - Battery Warning.  
Light - Engine Oil Pressure.  
Light - Engine Coolant Temperature.  
Light - Hydraulic Oil Temperature.  
Diodes - Overheat - Audible Warning.  
Switch - Beacon (supplied with beacon kit).  
Switch - Work/Transport Mode.  
Solenoid - Centre Cutterhead Drive Reverse.  
Solenoid - Centre Cutterhead Drive Forwards.  
Solenoid - Wing Cutterhead Drive Reverse.  
Solenoid - Wing Cutterhead Drive Forwards.  
Switch - Cutterhead Drive.  
950865  
15694-65992  
924601/950858  
924601/950857  
924601/950862  
924601/950861  
924601/950866  
924601/950863  
924601/924605  
924601/924606  
924601/924602  
924601/924603  
950868  
924608  
924607  
70-06-246  
70-06-246  
70-06-246  
70-06-246  
924864  
9.  
10.  
11.  
12.  
13.  
14.  
15.  
16.  
17.  
18.  
19.  
20.  
21.  
Fusebox.  
70-09-096  
70-09-026  
70-09-026  
70-09-024  
1. 10A Cutter Drive & Lift Configuration  
2. 10A Transmission & Horn  
3. 3A Instruments  
4. Blank (Beacon)  
-
5. Blank (Cab Wipers) or (Air Suspension Seat)  
6. Blank (Lighting Kit)  
7. Blank (Lighting Kit)  
-
-
-
70-09-027  
8. 30A Engine Start (Fuel Solenoid)  
22.  
23.  
24.  
25.  
26.  
27.  
28.  
29.  
30.  
31.  
32.  
33.  
34.  
35.  
36.  
37.  
38.  
39.  
40.  
41.  
42.  
43.  
44.  
Switch - Ignition.  
Switch - Horn.  
Relay - Cutterhead Drive Warning Lamps.  
Relay - Overheat Audible Warning.  
Cutterhead Drive/Starter Interlock.  
Relay - Glow Plugs.  
Timer - Operator Presence Interlock.  
Switch - Cutterhead Lift Configuration.  
Solenoids - Lift Configuration.  
Temperature Gauge (supplied with temp kit).  
Relay - Fuel Solenoid  
Connectors for Lighting Kit.  
Horn.  
Switch - Operator Seat.  
Solenoid - Differential Lock.  
Switch - Differential Lock.  
Switch - Pressure Filter.  
Switch - Hydraulic Oil Temperature.  
Connection for Beacon Kit.  
Switch - Neutral/Starter Interlock.  
Battery.  
74-09-009  
924618  
70-09-148  
70-09-148  
995713  
92462 5  
70-01-512  
924608  
63-06-082  
-
16259-60250  
-
70-09-108  
953819  
910627  
924624  
-
940852  
-
995711  
70-09-015  
-
Switch - Engine Oil Pressure.  
Starter Motor.  
-
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1.77  
ELECTRICAL CIRCUIT DIAGRAM  
1.77  
1
2
3
4
5
6
7
8
953910KG141004  
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1.78  
1.78  
ELECTRICAL CIRCUIT DIAGRAM  
ITEM NO.  
DESCRIPTION  
PART NO.  
45.  
46.  
47.  
48.  
49.  
50.  
51.  
52.  
53.  
54.  
55.  
56.  
57.  
58.  
Alternator/Regulator.  
Engine Temperature Sender (supplied with temp kit).  
Glow Plugs.  
Switch - Engine Overheat.  
Solenoid - Fuel  
Engine.  
-
-
-
-
(SA 4259-12)  
950950  
910850  
-
910627  
-
Hourmeter.  
Switch - Return filter.  
Solenoids - Work/Transport Mode.  
Fuse - Engine Glow plugs 60A  
Fuse - Main 60A  
Diode - Parking Brake  
Diode - Seat Switch  
Relay - Seat Switch  
-
950868  
950868  
70-09-148  
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1.79 TRANSMISSION / BRAKE - HYDRAULIC CIRCUIT  
1.79  
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1.80  
1.80  
TRANSMISSION / BRAKE - HYDRAULIC CIRCUIT  
ITEM NO.  
DESCRIPTION  
PART NO.  
1
2
3
4
5
6
7
Motor - Front Wheel Twinlock - 332cc/Rev  
Motor - Front Wheel Twinlock - 332cc/Rev  
Manifold - Front Transmission  
Valve - Solenoid - Work/Transport  
Valve - Pilot Operated - Diff Lock  
Relief Valve - Serial Lines - 80 bar  
Valve Solenoid - Diff Lock  
953686  
953682  
953683  
-
-
-
-
8
9
Relief Valve - Front Motor - 375 Bar  
Flow Divider - Front Wheels  
Valve - Pilot Operated - Diff Lock  
Shuttle Valve - Hot Oil Purge  
Relief Valve - Hot Oil Purge  
Relief Valve - Serial Line - 375 Bar  
Wheel Motor - Rear - 130cc/Rev  
Pump - Transmission - 52cc/Rev  
Relief Valve - Charge Pump - 29 Bar  
Relief Valves - Fwd/Rev - 350 Bar  
Oil Cooler  
Filter - Charge - 10 Micron  
Filter - Return - 10 Micron  
Hydraulic Oil Tank  
Check Valve - Transmission Fwd/Rev  
Suction Strainer - 125 Micron  
Valve - Brake  
-
-
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
-
953687  
-
953710  
953685  
953684  
-
-
950606  
950597  
924865  
953802  
-
950608  
70-06-015W  
Check Valve  
Orifice - 1.5mm Dia.  
-
-
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1.81  
HYDRAULIC CIRCUIT DIAGRAM  
1.81  
953910KG141004  
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1.82  
1.82  
HYDRAULIC CIRCUIT DIAGRAM  
ITEM NO.  
DESCRIPTION  
PART NO.  
1
2
3
4
Gear pump - Centre Cutterhead Drive.  
Gear pump - Wing Cutterhead Drive.  
Gear pump - Steering and Cutterhead Lift  
Relief Valve - Steering 110 bar  
74-06-154  
74-06-154  
74-06-154  
-
5
6
7
8
Steering Unit  
910649W  
-
-
-
-
70-01-195W  
-
-
Check Valve - Steering Shock Bypass R.H.  
Check Valve - Steering Shock Bypass L.H.  
Relief Valve - Steering Shock L.H.  
Relief Valve - Steering Shock R.H.  
Steering Cylinder - Rear Axle  
Spool Valve - Cutterhead Lift L.H.  
Spool Valve - Cutterhead Lift Centre  
Spool Valve - Cutterhead Lift R.H  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
-
Solenoid Valve 131 or 212 R.H  
Solenoid Valve 131 or 212 L.H.  
953609  
953609  
953603  
910109W  
910109W  
910109W  
953603  
70-06-245  
70-06-246  
70-06-246  
910699  
910709  
910708  
953601  
940602  
-
953601  
940602  
-
953601  
910696  
-
953600  
953610  
953601  
910696  
-
953601  
940602  
-
Hydraulic Cylinder - RH Wing Cutterhead.  
Hydraulic Cylinder - RH Front Cutterhead.  
Hydraulic Cylinder - Centre Cutterhead.  
Hydraulic Cylinder - LH Front Cutterhead.  
Hydraulic Cylinder - LH Wing Cutterhead.  
Solenoid Valve Assembly - Cutterhead Drive (2- pl).  
Solenoid Cutting Cylinders Forwards (2-pl).  
Solenoid Cutting Cylinders Reverse (2-pl).  
Cutter Drive Control Manifold Front and Centre.  
Restrictor Valve - Variable Weight Transfer.  
Relief Valve - Cutterheads Front and Centre - 250 bar  
Diverter Valve - Centre Cutterhead.  
Hydraulic Motor - Centre Cutterhead.  
Check Valve/Orifice - Motor Bypass Centre Cutterhead.  
Diverter Valve - L.H. Front Cutterhead.  
Hydraulic Motor - L.H. Front Cutterhead.  
Check Valve/Orifice - L.H. Front Cutterhead.  
Diverter Valve - R.H. Front Cutterhead.  
Hydraulic Motor - R.H. Front Cutterhead.  
Check Valve/Orifice - R.H. Front Cutterhead.  
Cutter Drive Control Block Wing Cutterhead.  
Relief Valve - Wing Cutterhead - 250 bar.  
Diverter Valve - R.H. Wing Cutterhead.  
Hydraulic Motor - R.H. Wing Cutterhead.  
Check Valve/Orifice - R.H. Wing Cutterhead.  
Diverter Valve - L.H. Wing Cutterhead.  
Hydraulic Motor - L.H. Wing Cutterhead.  
Check Valve/Orifice - L.H. Wing Cutterhead.  
Test Point - Cutterhead Drive - Wing.  
Test Point - Cutterhead Drive - Front & Centre.  
Test Point - Weight Transfer.  
910615  
910615  
910615  
950616  
910616  
910641  
950608  
950606  
924865  
953802  
Front Transmission Manifold.  
Return Bypass Manifold.  
Check Valve - Oil Cooler Bypass - 4 bar.  
Suction Strainer.  
Oil Cooler.  
Return Filter - Bypass Check Valve - 2 Bar.  
Oil Tank.  
Orifice - Wing Cutterhead Hydraulic Cylinder 1.4mm (2 pl).65-06-019  
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1.83  
WARRANTY  
1.83  
WARRANTY  
HAYTER LIMITED warrants to the original user / purchaser that this unit shall be free from defects in  
material and workmanship for a period of 12 calendar months from the date of delivery. This warranty  
excludes proprietary items which have the benefit of the supplying manufacturer’s warranty.  
Engine manufacturers furnish their own warranties and provide services through their authorised network.  
If you experience any difficulty please contact your specialist Hayter dealer.  
It is the end user’s / purchaser’s responsibility to ensure that the service schedule and service book as  
applied are acted upon. HAYTER LIMITED reserve the right to request inspection of a service book,  
where relevant at any reasonable time. Failure to keep the service schedule up to date may invalidate the  
warranty. Owners should therefore satisfy themselves that the products are operated and serviced correctly,  
particularly where they are operated on a contract or hire basis.  
This warranty which is not capable of assignment does not apply to any unit that has been tampered with,  
altered, misused or abused and will become invalid if non genuine Hayter parts are fitted. This  
warranty does not cover minor adjustments unless they are due to defective materials or workmanship.  
Consult the operators manual or your authorised Hayter dealer for assistance when making these  
adjustments.  
To make a warranty claim, contact your authorised Hayter dealer through whom the machine was  
originally supplied, indicating the machine serial number and purchase date. Subject to the conditions and  
exclusions in this warranty, the authorised dealer will at our option, repair or replace any warranted part  
within the duration of the warranty period.  
This warranty gives you specific legal rights and is in addition to any statutory rights to which you may be  
entitled and your statutory rights are not affected by this warranty. If you need additional information  
concerning this written warranty or assistance in obtaining services please write or telephone : HAYTER  
LIMITED, Service Department, Spellbrook, Bishop's Stortford, Herts., CM23 4BU.  
Telephone : (01279) 723444.  
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1.84  
1.84  
NOTES  
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1.85  
CUSTOMER INFORMATION  
1.85  
MACHINE DETAILS  
Model:  
Machine Serial No.:  
Engine Serial No.:  
Cutterhead Serial No.s:  
Transmission Pump Serial No.:  
Transmission Valve Block Front Serial No.:  
Cutter Control Valve (Front & Centre) Serial No.:  
Cutter Control Valve (Wing) Serial No.:  
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