Hayter Mowers Trimmer 407D User Manual

POWERTRIM  
Code 407D  
OWNER’S HANDBOOK  
FROM SERIAL NO:407D001001  
ISSUE: 01-20-06  
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PART NO: 111-0443 (rev.0.)  
TABLE OF CONTENTS  
OWNER’S INFORMATION  
4
4
7
SAFETY PRECAUTIONS  
INTERNATIONAL PICTORIALS  
ASSEMBLY  
8
OPERATION  
MAINTENANCE  
TROUBLE SHOOTING CHART  
REPAIR PARTS  
11  
14  
20  
22  
Declared vibration emission values in accordance with Directive 98/37/EC.  
2
Vibration Emission according to EN 836/A2:2001: 10 m/s .  
Values determined at the handle when the machine was operated stationary on a  
concrete surface at 3600 min-1.  
Declared Airborne Sound Power level of 106 dB(A) is in accordance with  
Directive 2000/14/EC.  
Sound Pressure Level at operator position 90 dB.  
Values determined at ear according to the specifications of EN 836/A2:2001.  
2
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LIMITED WARRANTY  
Hayter Limited warrants to the original user / purchaser that this unit shall be free from defects in  
material and workmanship under normal use and service for a period of three years from the  
date of purchase. The manufacturers of the engine and battery pack system (where applicable)  
furnish their own warranty and services are provided through their authorised network (Refer to  
“Engine/Battery Pack Warranty Statement”). To qualify for the full benefit of the warranty, the war-  
ranty registration card must be returned within 60 days of purchase. Subject to the conditions and  
exclusions noted in this limited warranty, we shall at our option, repair or replace any warranted  
part during the applicable period. If you are in doubt or experience any difficulty, please consult a  
Hayter Authorised Service Dealer for clarification..  
To qualify for the extended warranty (second and third year) of the three year limited warranty, the  
machine must have annual services carried out by an Authorised Hayter Service Dealer. These  
chargeable services should be carried out within 12 and 24 months of the date of purchase.  
Excluded from the extended warranty period are those items which are subject to normal wear  
and tear e.g. tyres, wheels, cutterbars, cables, batteries and other consumable wearing parts.  
All consumer machines which are fitted with a genuine Hayter friction disc as original equipment,  
before use, are covered by a Lifetime Warranty against the engine crankshaft bending. Note:  
friction washers, blade brake units and other such devices are not applicable. Only machines  
fitted with a genuine Hayter friction disc, which are used in accordance with the recommended  
operating and maintenance procedures, are covered.  
This warranty does not apply to any unit that has been tampered with, altered, misused, abused  
or used for hire, and will become invalid if non genuine Hayter parts are fitted. This warranty does  
not cover minor mechanical adjustments unless they are due to defective materials or workman-  
ship. Consult the Owner’s Handbook or a Hayter Authorised Service Dealer for assistance when  
making these adjustments.  
A warranty period of 90 days applies to machines used for commercial purposes.  
To make a warranty claim, return the unit to a Hayter authorised dealer along with proof of pur-  
chase stating the machine serial number and date of purchase. The service receipt(s) or this  
Owner’s Handbook with the 1st/2nd year service boxes fully completed, must be produced as  
proof of entitlement to the extended warranty period. Subject to the conditions and exclusions in  
this limited warranty, the authorised dealer will, at our option, repair or replace any warranted part  
within the duration of the warranty period.  
This limited 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 to:  
HAYTER LIMITED,  
Service Department,  
Spellbrook,  
Bishop’s Stortford,  
Hertfordshire. CM23 4BU  
1st Year  
Service  
Record  
2nd Year  
Service  
Record  
Date . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .  
Date . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .  
Signed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Signed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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SAFETY RULES  
5. Inspect the area where the machine is to  
OWNER’S INFORMATION  
be used. Your equipment can propel  
small objects at high speed causing per-  
sonal injury or property damage. Stay  
away from breakable objects, such as  
windows, greenhouses, etc.  
Know your product: If you understand the  
unit and how the unit operates, you will get  
the best performance. As you read this manu-  
al, compare the illustrations to the unit. Learn  
the location and the function of the controls.  
To help prevent an accident, follow the oper-  
ating instructions and the safety rules. Keep  
this manual for future reference.  
6. Keep the area of operation clear of all  
persons, particularly small children, and  
pets.  
7. Wear appropriate clothing such as a  
longsleeved shirt or jacket. Also wear  
long trousers. Do not wear shorts.  
8. Do not wear loose clothing which could  
get caught in this equipment.  
WARNING: Look for this symbol to indi-  
cate important safety precautions. This  
symbol indicates: “Attention! Become  
Alert! Your Safety Is At Risk.”  
9. Always wear safety goggles or safety  
glasses with side shields when operating  
the machine to protect your eyes from  
foreign objects which can be thrown  
from the unit.  
10. Always wear work gloves and sturdy  
footwear. Leather work shoes or short  
boots work well for most people. These  
will protect the operator’s ankles and  
shins from small sticks, splinters, and  
other debris, and improve traction.  
Responsibility Of The Owner  
WARNING: This cutting machine  
is capable of throwing objects.  
Failure to observe the following  
11. It is advisable to wear protective head-  
gear to prevent the possibility of being  
struck by small flying particles, or being  
struck by low hanging branches, twigs,  
or other objects which may be unnoticed  
by the operator.  
safety instructions could result in serious  
injury to the operator or bystanders.  
The responsibility of the owner is  
to follow the instructions below.  
12. Do not operate the machine without  
proper guards or other safety protective  
devices in place.  
SAFETY PRECAUTIONS  
I. General Operation  
13. Use this equipment for its intended pur-  
pose only.  
14. See manufacturer’s instructions for prop-  
er operation and installation of accesso-  
ries. Only use accessories approved by  
the manufacturer.  
1. Read, understand, and follow all instruc-  
tions on the machine and in the manu-  
al(s). Be thoroughly familiar with the  
controls and the proper use of the ma-  
chine before starting.  
15. Operate only in daylight or good artificial  
light.  
2. Familiarise yourself with all of the safety  
and operating decals on this equipment  
and on any of its attachments or acces-  
sories.  
16. Do not operate the machine while under  
the influence of alcohol, drugs or other  
medication which can cause drowsiness  
or affect your ability to operate this ma-  
chine safely.  
3. Do not put hands or feet near or under  
rotating parts.  
4. Only allow responsible individuals, who  
are familiar with the instructions, to oper-  
ate the machine.  
17. Never operate machine in wet grass. Al-  
ways be sure of your footing; keep a firm  
hold on the handle and walk; never run.  
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SAFETY RULES  
18. Before each use, inspect the throttle  
Do trim across the face of slopes; never up  
and down. Do not trim excessively steep  
slopes (maximum 15 degrees) or areas  
where the ground is very rough. Exercise ex-  
treme caution when changing direction on  
slopes.  
control lever and cable. Make sure that  
the cable is free and that the lever is not  
damaged. Also check the cable linkage  
running to the carburetor for kinks, loose  
fittings, and obstructions. Verify that the  
control bail is working properly.  
Do remove objects such as rocks, tree limbs,  
19. Stop the rotating trimmer head when  
crossing gravel drives, walks, or roads.  
Wait for the cutting lines to stop rotating.  
etc.  
Do watch for holes, ruts, or bumps. Tall grass  
can hide obstacles.  
20. Watch for traffic when operating near, or  
when crossing roads.  
Do not trim near dropoffs, ditches, or em-  
bankments. The operator could lose footing  
or balance.  
21. Stop the engine whenever you leave the  
equipment, before cleaning repairing or  
inspecting the unit, be sure the trimmer  
head and all moving parts have stopped.  
Let the engine cool, disconnect the  
spark plug wire and move it away from  
the spark plug.  
Do not trim on wet grass. Reduced footing  
could cause slipping.  
III. Children  
Tragic accidents can occur if the operator is  
not alert to the presence of children. Children  
are often attracted to the machine and the  
trimming activity. Never assume that children  
will remain where you last saw them.  
1. Keep children out of the trimming area  
and under the watchful care of a respon-  
sible adult.  
22. If the equipment should start to vibrate  
abnormally, stop the engine, disconnect  
the spark plug wire and prevent it from  
touching the spark plug. Check immedi-  
ately for the cause. Vibration is generally  
a warning of trouble.  
23. After striking a foreign object, stop the  
engine. Remove the wire from the spark  
plug. Inspect the machine for damage. If  
damaged, repair before starting and op-  
erating the machine.  
2. Be alert and turn machine off if children  
enter the area.  
3. Before and while moving backwards,  
look behind and down for small children.  
4. Never allow children to operate the ma-  
chine.  
5. Use extra care when approaching blind  
corners, shrubs, trees, or other objects  
that may obscure vision.  
24. Never leave the machine unattended  
when the engine is running. Remove  
the wire from the spark plug.  
25. Regularly inspect the machine. Make  
sure parts are not bent, damaged or  
loose.  
IV. Service  
1. Use extra care in handling petrol and  
other fuels. They are flammable and va-  
pors are explosive.  
26. Never pick up or carry the machine while  
the engine is running.  
a. Use only an approved container.  
b. Never remove gas cap or add fuel  
with the engine running. Allow en-  
gine to cool before refueling. Do not  
smoke.  
c. Never refuel the machine indoors.  
d. Never store the machine or fuel  
container inside where there is an  
open flame, such as a water heater.  
e. If the fuel tank has to be drained,  
this should be done outdoors. The  
drained fuel should be stored in a  
container specifically designed for  
fuel storage or it should be dis-  
posed of carefully.  
27. Prolonged exposure to noise and vibra-  
tion from petrol engine powered equip-  
ment should be avoided. Take  
intermittant breaks and/or wear ear  
protection from engine noise as well as  
heavy work gloves to reduce vibration in  
the hands.  
II. Slope Operation  
Slopes are a major factor related to slip and  
fall accidents which can result in severe inju-  
ry. All slopes require extra caution. If you feel  
uneasy on a slope, do not trim it.  
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SAFETY RULES  
2. Never run an engine indoors or inside a  
8. To reduce fire hazard, keep machine  
free of grass, leaves, or other debris  
buildup. Clean up oil or fuel spillage.  
Allow machine to cool before storing.  
closed area.  
3. Never make adjustments or repairs with  
the engine running. Disconnect the  
spark plug wire, and keep the wire away  
from the plug to prevent accidental start-  
ing. Always wear eye protection when  
you make adjustments or repairs.  
9. Stop and inspect the equipment if you  
strike an object. Repair, if necessary, be-  
fore restarting.  
4. Check the trimmer head and engine  
mounting bolts at frequent intervals for  
proper tightness.  
5. Keep all nuts and bolts tight and keep  
equipment in good condition. Check  
mounting hardware on trimmer head ev-  
ery time you change trimmer line and  
prior to each use.  
10. Always disconnect spark plug wire be-  
fore cleaning, repairing, or adjusting.  
11. Do not change the engine governor set-  
ting or overspeed the engine.  
12. Clean and replace safety and instruction  
decals as necessary.  
13. To guard against engine overheating,  
always have engine debris filter  
mounted and clean.  
6. Never tamper with safety devices.  
Check their proper operation regularly.  
7. When servicing or repairing the ma-  
chine, do not tip the machine over or up  
unless specifically instructed to do so in  
this Manual. Service and repair proce-  
dures can be done with the machine in  
an upright position. Some procedures  
will be easier if the machine is lifted on a  
raised platform or working surface.  
14. Inspect machine before storage.  
15. Use only original equipment or autho-  
rised replacement parts.  
16. Never replace the cutting lines with met-  
al parts.  
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SAFETY RULES  
INTERNATIONAL PICTORIALS  
IMPORTANT: The following pictorials are located on your unit or on literature supplied  
with the product. Before you operate the unit, learn and understand the purpose for  
each pictorial.  
1
2
3
7
4
9
5
6
8
Safety Warning Pictorials  
1
WARNING  
5
WARNING: Rotating Parts. Stop Engine.  
Disconnect Spark Plug Wire Before  
Making Adjustments.  
WARNING: Wear Eye Protection  
DANGER: Disconnect Spark Plug Wire  
Before Servicing Unit.  
2
IMPORTANT: Read Owner’s Manual  
Before Operating This Machine.  
6
7
3
4
WARNING: Thrown Objects. Keep  
Bystanders Away. Read User  
Instructions Before Operating This  
Machine.  
8
9
Direction of Rotating Line.  
Declared airborne sound power level of  
106dB(A) is in accordance with Directive  
2000/14/EC.  
Do Not Trim Up And Down Slopes. Trim  
Across Slopes.  
2
6
3
7
1
4
5
8
Control And Operating Pictorials  
1
2
3
4
Slow  
5
6
7
8
Oil  
Fast  
Fuel  
Engine Stop  
Engine Stop  
Engage  
Disengage  
7
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ASSEMBLY  
ASSEMBLY  
CONTENTS OF PARTS BAG  
1 Owner’s Manual  
1 Parts Bag  
(Not shown actual size)  
2 Sets Trimmer Lines  
(0.155 inch diameter)  
1 Safety Glasses 1 20 oz. Bottle Oil  
1 Bag (4 Screws)  
TO REMOVE THE  
WARNING: Always wear safety  
glasses or eye shields while as-  
sembling the machine.  
TRIMMER FROM CARTON  
1. Remove the parts bag and any loose parts  
from carton.  
2. Remove the packing material positioned  
around the unit.  
TOOLS REQUIRED  
1 Knife to cut carton.  
1 THandle Wrench.  
3. Cut down all four corners of the carton and  
lay the side panels flat.  
4. Pull the trimmer out of the carton and off  
the base pad.  
5. Remove packing material from around the  
trimmer head.  
Figure 1 shows the machine completely as-  
sembled and positioned in the carton for ship-  
ment.  
References to the right or left hand side of the  
machine are from the viewpoint of the opera-  
tor’s position behind the unit.  
6. Remove protective plastic from front of  
frame.  
Figure 1  
8
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ASSEMBLY  
HOW TO RAISE THE HANDLE  
1. Hold the handle with one hand and loosen both handle adjustment knobs until the ratchet  
teeth are disengaged. Do not remove the handle adjustment knobs. See Figure 2.  
2. Raise the handle to the  
operating position.  
3. Stand in the operator’s  
Handle  
position behind the ma-  
chine. Put the handle in  
a comfortable position.  
Make sure both sides of  
the handle are level.  
Rope  
Guide  
NOTE: Make sure the  
cables are not caught  
between the upper and  
lower handle.  
Recoil Start  
Handle  
Handle  
Pivot  
4. Tighten the handle ad-  
justment knobs. Make  
sure the handle pivots  
are locked in place.  
Handle Adjustment  
Knob  
NOTE: The handlebar  
height is adjustable.  
See “How To Adjust  
The Height Of The Han-  
dlebar” in the Mainte-  
nance section.  
Figure 2  
5. To attach the recoil start handle to the rope guide, twist the rope through  
the rope guide mounted on the right side of the handlebar.  
HOW TO ATTACH THE GUARD  
1. Attach the guard to the machine with the  
four fasteners as shown. See Figure 3.  
Trimmer  
Fastener  
Guard  
Figure 3  
9
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ASSEMBLY  
Fill Crankcase With Oil  
ENGINE PREPARATION  
1. Remove the oil fill cap/dipstick shown in  
Figure 4. Fill the crankcase to the FULL  
line on oil fill cap/dipstick. DO NOT OVER-  
FILL.  
2. Install the oil fill cap/dipstick and tighten  
securely.  
Note: Engine does not contain OIL or  
PETROL.  
WARNING: Follow the engine  
manufacturer’s instructions for  
the type of petrol and oil to use.  
Always use a safety petrol container. Do  
not smoke when adding petrol to the en-  
gine. When inside an enclosure, do not  
fill with petrol. Before you add petrol,  
stop the engine. Let the engine cool for  
several minutes.  
Fill Fuel Tank With Petrol  
See the engine manufacturer’s instructions for  
the type of petrol to use.  
Oil Fill  
Cap/Dipstick  
See the engine manufacturer’s instructions  
for the type of petrol and oil to use. Before  
you use the unit, read the information on  
safety, operation, maintenance, and storage.  
Fuel  
Cap  
Note: Actual sustained horsepower will  
likely be lower due to operating limita-  
tions and environmental factors.  
Figure 4  
As you learn how to use the machine, pay ex-  
tra attention to the following important items:  
n CHECKLIST  
For the best performance and satisfaction  
from this quality product, please review the fol-  
lowing checklist before you operate the ma-  
chine:  
nn Engine oil is at correct level.  
nn Fuel tank is filled with fresh, clean, reg-  
ular unleaded petrol.  
n
All assembly instructions have been  
completed.  
Check carton. Make sure no loose parts  
remain in the carton.  
nn Become familiar and understand the  
function of all controls. Before your start  
the engine, operate all controls.  
n
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OPERATION  
KNOW YOUR POWERTRIM  
READ THE OWNER’S HANDBOOK AND ALL SAFETY RULES BEFORE YOU OPERATE the  
machine. To familiarise yourself with the location of the controls, compare the illustrations with your  
machine. Save this handbook for future reference.  
Control Bail  
Trimmer Head Drive Lever  
Upper Handle  
Throttle Control Lever  
Dipstick  
Recoil Starter Handle  
Handle Adjustment Knob  
Fuel Cap  
Trimmer Head  
Trimmer Line  
Shield Edge Guard  
Figure 5  
Trimmer Head Drive Lever Engages  
the rotation of the trimmer head.  
Throttle Control Lever Controls the  
speed or stops the engine.  
Control Bail Release to stop the rotation  
of the trimmer head.  
Recoil Starter Handle The engine is  
equipped with an easy pull recoil starter.  
EYE PROTECTION  
HOW TO STOP  
THE TRIMMER HEAD  
1. Release the control bail. It will return to its  
open position and disengage the trimmer  
head.  
WARNING: Debris thrown from  
the machine can result in  
foreign objects being thrown  
into the eyes, which can cause severe  
eye damage. Always wear safety  
glasses or eye shields when operating  
the machine.  
HOW TO STOP THE ENGINE  
WARNING: The trimmer head will  
continue to rotate for several sec  
onds after the engine has  
stopped  
Always wear safety glasses. If you wear eye  
glasses, put a Wide Vision Safety Mask over  
your eye glasses.  
1. Move the throttle control lever com-  
pletely back to the STOP position.  
11  
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OPERATION  
HOW TO USE THE  
TRIMMER HEAD DRIVE LEVER  
Control Bail  
Handlebar  
1. To engage the trimmer head, hold the con-  
trol bail against the handle. Move the  
trimmer head drive lever forward to en-  
gage the trimmer head. See Figure 6. The  
faster the engine runs, the faster the trim-  
mer head will rotate.  
2. Once the trimmer head is rotating, push  
the machine forward to trim.  
Trimmer Head  
Drive Lever  
Figure 6  
HOW TO USE THE  
THROTTLE CONTROL  
1. During normal use, set the throttle con-  
trol lever in the FAST position to run the  
engine at full speed.  
2. Pull the throttle control lever back to de-  
crease engine speed. Push the throttle  
control lever forward to increase engine  
speed.  
Throttle Control  
Lever  
3. To stop the engine, pull the throttle con-  
trol lever completely back to the STOP  
position.  
Figure 7  
HOW TO USE  
THE PRIMER BUTTON  
1. Push the primer button. See Figure 8 for  
location. For the number of times to push  
the primer button, see the primer button  
decal located on the engine or follow the  
directions in the Engine Manual. Wait  
approximately two seconds between each  
push.  
NOTE: Do not use the primer button to re-  
start a warm engine after a short shutdown.  
Primer  
Button  
Figure 8  
12  
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OPERATION  
NOTE: If engine fails to start after three  
pulls, push the primer button two times and  
again pull the recoil starter handle.  
HOW TO START THE ENGINE  
NOTE: DO NOT BE ALARMED, your engine  
will smoke the first time it is started. It is  
burning off the protective coating that is on  
the internal engine parts.  
WARNING: Never run the engine  
indoors or in a poorly ventilated  
area. Engine exhaust contains  
carbon monoxide, an odorless  
and deadly gas. Keep hands,  
feet, hair and loose clothing  
away from the machine and any  
moving parts on the engine.  
Avoid the muffler and surround-  
ing areas. Temperatures may ex-  
ceed 1505F.  
WARNING: Never leave the ma-  
chine unattended while the en-  
gine is running. Wait for the trim-  
mer lines to stop rotation.  
1. Before each use, remove debris from the  
debris screen shown in Figure 5. Debris  
can cause the engine to overheat. Wipe  
the debris screen with a cloth or paper  
towel.  
2. Move the throttle control lever forward to  
the START or FAST position.  
3. To start a cold engine, push the primer but-  
ton five times. Wait two seconds between  
each push of the primer button.  
NOTE: Do not use the primer to start a  
warm engine.  
4. Firmly hold the recoil starter handle with  
your right hand. See Figure 9.  
5. Pull back sharply on the recoil starter  
handle. DO NOT allow the starter rope to  
snap back. Let the starter rope slowly re-  
wind as you hold the recoil starter handle.  
Recoil Starter Handle  
Figure 9  
TRIMMER TIPS  
WARNING: Debris such as sticks,  
gravel or stones, can be thrown  
with sufficient force to cause per-  
sonal injury or property damage.  
take longer to complete the job. If the trim-  
mer lines are worn to less than half their  
original length, change to a new trimmer  
line. “See How To Change The Trimmer  
Line” in the Maintenance section.  
S
Set the throttle control in the FAST posi-  
tion. If the weeds or grass are tall and  
thick, operate the machine at a slower  
walking speed.  
S
Do not trim on excessively steep slopes. If  
a slope is difficult to stand on, do not trim.  
Do not trim on slopes when the ground is  
slippery or wet. Trim across the face of a  
slope, not up and down.  
S
S
Frequently clean the underside of the ma-  
chine to remove any grass build up.  
S
STrimming may be done at slower engine  
speeds especially when trimming around  
flowers, shrubs, and small trees. Operat-  
ing at slower speeds will also reduce en-  
gine noise and vibration at the upper  
handle.  
For best results and longer lasting line,  
use the ends of the line to do the cutting.  
This is easily done by moving slowly  
through very thick or heavy weeds.  
S
If the trimmer lines become too short, it will  
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MAINTENANCE  
CUSTOMER RESPONSIBILITIES  
SERVICE RECORDS  
Before Every  
Every  
25  
Hours Hours  
Every  
100  
Hours  
Fill in dates as you  
complete regular service.  
As  
Noted  
SERVICE  
DATES  
Each  
Use  
5
Check Engine Oil Level  
Check trimmer Lines  
1
2
Check Trimmer Head  
Engagement  
Engine/Machine Cleaning  
Check Nuts and Bolts  
Check Spark Plug  
Change Engine Oil  
Service Air Filter  
3
Lubricate Jackshaft Assembly  
Lubricate Wheel Bearings  
Note 1 When old line is half the original length, replace with new line.  
Note 2 Clean daily if used in extremely dusty or dirty conditions.  
Note 3 Change more often if used in extremely dusty or dirty conditions.  
PRODUCT SPECIFICATIONS  
Trimmer Line Diameter 3.3mm (0.130”)  
Trimmer Line Length  
Height Of Cut (Fixed)  
Dimensions  
52omm (21.5”)  
76mmm (3”)  
1400 x 555 x 1000  
Briggs 122H020134B1  
6
Engine  
Horse Power  
Displacement  
Petrol Capacity  
Oil Capacity  
11.5 cu. in.  
1.5 litre (1.6 quarts)  
0.6 litre (20 oz.)  
Champion RJ19LM  
0.030”  
Spark Plug  
Spark Plug Gap  
Weight  
29.5kg  
14  
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MAINTENANCE  
LUBRICATION  
Grease Fitting  
How To Lubricate  
The Jackshaft Assembly  
A grease fitting is provided to lubricate the  
jackshaft assembly. Use a grease gun with au-  
tomotive type grease to lubricate the jackshaft  
assembly as shown in Figure 10.  
Figure 10  
How To Change Engine Oil  
Change the engine oil when the engine is  
warm. For the proper oil capacity, see the en-  
gine manufacturer’s instructions.  
7. Connect the spark plug wire to the spark  
plug.  
1. Disconnect spark plug wire from the spark  
plug.  
Oil Drain Plug  
2. Remove the oil drain plug as shown in  
Figure 11.  
3. Drain all the engine oil into a flat pan.  
4. Install the oil drain plug. Make sure the  
oil drain plug is tight.  
5. Remove the dipstick.  
6. Fill the engine crankcase. DO NOT  
OVERFILL. For proper oil capacity, see  
the engine manufacturer’s instructions.  
Figure 11  
15  
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MAINTENANCE  
SPARK PLUG  
Check the spark plug every 25 hours. Re-  
place the spark plug if the electrodes are  
pitted or burned or if the porcelain is cracked.  
Tighten the spark plug to a torque of 15  
footpounds.  
1. Make sure the spark plug is clean. Clean  
the spark plug by carefully scraping the  
electrodes (do not sand blast or use a wire  
brush).  
Feeler Gauge  
0.030”  
2. Check the spark plug gap with a feeler  
gauge. See “Product Specifications” for  
the correct spark plug gap and replace-  
ment spark plug.  
Spark Plug  
Figure 12  
3. Before installing the spark plug, coat the  
threads lightly with oil for easy removal.  
HOW TO ADJUST THE HEIGHT OF  
THE HANDLEBAR  
Handlebar  
Use the knobs, on each side of the handle-  
bar, to adjust the height of the handlebar.  
Ratchet  
Teeth  
1. Hold the handlebar with one hand and  
loosen both knobs until the ratchet teeth  
are disengaged. Do not remove the  
knobs. See Figure 13.  
2. Move thehandlebar up or down to the de-  
sired position, then align the ratchet  
teeth. Make sure both sides of the hand-  
lebar are level.  
3. Tighten the knobs.  
Knob  
Figure 13  
16  
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MAINTENANCE  
SERVICE AND ADJUSTMENT  
WARNING: Before you inspect, clean or service the machine, stop the engine.  
Make sure that all moving parts have stopped. Disconnect the wire from the  
spark plug.  
HOW TO REPLACE THE TRIMMER LINE  
For the best performance, use a heavy  
gauge 3.3mm (0.130” diameter) trimmer  
line. Cut the length of the trimmer line to  
52cm (21.5 inches). Do not allow the length  
of the lines to vary more than one inch. This  
is important to make sure the trimmer head  
is balanced and does not vibrate.  
IMPORTANT: To extend the life of the trim-  
mer line, keep the trimmer line moist. If not  
kept moist, the nylon trimmer line will be-  
come dry and brittle. Keep extra trimmer  
line in a can of water. The line will then stay  
flexible and easy to change. A flexible line  
will also last much longer.  
HOW TO CHANGE TRIMMER LINES  
When the trimmer line becomes worn to half the original length, replace the trimmer line as  
follows:  
Line  
Retainer  
Trimmer  
Line  
Line  
Retainer  
5. Then, check to make  
sure that the ends of the  
line are even.  
1. Stop the engine. Wait for 4. Next, take the ends of the  
all moving parts to stop.  
line, cross over the line  
retainer, and thread the  
ends through the centre  
hole.  
2. Remove worn trimmer  
line from line retainer.  
3. First, thread the ends of  
the new trimmer line  
through the outside  
loops.  
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MAINTENANCE  
HOW TO  
Trimmer Housing  
REPLACE THE DRIVE BELT  
To replace the drive belt, the trimmer head  
and shield must be removed as follows.  
WARNING: Before you remove  
the drive belt, disconnect the  
wire from the spark plug.  
1. Remove the two fasteners that hold the  
rear of the shield to the trimmer housing  
(See Figure 14).  
Drive Belt  
2. Remove the four fasteners that hold the  
front of the shield and trimmer head to  
the trimmer housing.  
Shield  
3. Remove the “V” pulley from the idler  
bracket.  
4. Raise the front of the trimmer housing  
and remove the drive belt. On some mod-  
els, it is necessary to loosen the mount-  
ing bolt for thedrive pulley to remove the  
drive belt (see Figure 15). Do not bend the  
belt guides.  
Trimmer Head  
Figure 14  
NOTE: Make sure you replace the drive  
belt only with a replacement belt from  
the factory.  
5. To assemble the drive belt, reverse the  
above steps. Make sure all fasteners are  
tight. Make sure the mounting bolt for the  
drive pulley is tight.  
“V” Pulley  
Belt Guide  
Drive Belt  
6. Check the routing of the drive belt. Make  
sure the drive belt is inside of all belt  
guides shown in Figure 15.  
Belt Guide  
Belt Guide  
IMPORTANT: Test the drive system. Start  
the engine and move the throttle control to  
the FAST position. Engage and disengage  
the trimmer head several times. When dis-  
engaged, make sure the trimmer head com-  
pletely stops when resting on the ground. If  
the trimmer head continues to rotate, take  
the machine to the nearest authorised  
Service Dealer.  
Mounting Bolt  
Drive Pulley  
Figure 15  
18  
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MAINTENANCE  
STORAGE  
WARNING: Do not remove petrol  
while inside a building, near a  
fire, or while you smoke. Petrol  
fumes can cause an explosion or  
a fire.  
Engine  
To prevent engine damage when the ma-  
chine is in storage for 30 days or more, fol-  
low the steps below:  
S
S
Let the engine run until it is out of petrol.  
When the machine is put in storage for thirty  
days or more, follow the steps below to  
make sure the machine is in good condition  
the following season.  
Drain the oil from the warm engine. Fill the  
engine crankcase with new oil.  
S
Remove the spark plug from the cylinder.  
Pour one ounce of oil into the cylinder.  
Slowly pull the recoil starter handle so that  
the oil will protect the cylinder. Install a new  
spark plug in the cylinder.  
Trimmer  
S
Completely clean the machine.  
S
Put the machine in a building that has  
good ventilation.  
S
Clean dirt and debris from the cylinder  
cooling fins and the engine housing.  
19  
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TROUBLE SHOOTING CHART  
TROUBLE  
CAUSE  
CORRECTION  
Engine does not start  
Spark plug wire  
disconnected.  
Connect spark plug wire.  
Engine not primed.  
Prime engine.  
Defective or incorrectly  
gapped spark plug.  
Inspect or replace spark  
plug.  
Fuel tank empty.  
Add fuel.  
Dirty carburetor or fuel line.  
Dirty air filter.  
Clean carburetor or fuel line.  
Replace air filter.  
Carburetor out of adjustment. For carburetor adjustment,  
take the unit to an authorised  
Service Dealer.  
Engine flooded.  
Wait several minutes before  
starting.  
Throttle control lever in  
incorrect position.  
Move throttle lever to FAST  
or START position.  
Stale petrol.  
Drain old petrol and add  
fresh petrol.  
Defective throttle control  
lever or wire.  
Inspect lever and wire.  
Replace if damaged or  
defective.  
Engine runs poorly.  
Bad spark plug.  
Dirty air filter.  
Replace spark plug.  
Replace air filter.  
Carburetor out of adjustment. Adjust carburetor. Take the  
unit to an authorised Service  
Dealer.  
Stale petrol.  
Drain old petrol. Add fresh  
petrol.  
Engine cooling system  
clogged.  
Clean engine screen and  
cooling fins.  
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TROUBLE SHOOTING CHART  
Engine overheats.  
Engine cooling system  
clogged.  
Clean debris screen and  
engine cooling fins.  
Carburetor out of adjustment. Adjust carburetor. Take the  
unit to an authorised Service  
Dealer.  
Oil level is low.  
Add oil.  
Engine will not stop  
running.  
Defective throttle control  
lever or wire.  
Inspect and replace  
damaged parts.  
Throttle not adjusted  
properly.  
Move throttle to the full OFF  
position.  
Poor trimming  
performance.  
Trimmer line length is too  
short.  
Correct line length is 52cm  
(21.5 inches). When less  
than 1/2 this length, replace  
the line.  
Engine not set at FAST  
speed.  
Move engine throttle lever to  
FAST position.  
Trimmer vibrates  
Trimmer line lengths are  
substantially different.  
Adjust trimmer line to  
approximately equal lengths.  
Loose nuts or bolts.  
Check all bolts and nuts,  
including engine bolts.  
Broken trimmer head.  
Replace broken part.  
Trimmer head does not  
retain line  
Trimmer line not properly  
attached.  
Follow instructions on decal  
or in the Maintenance  
section of the owner’s  
handbook.  
Broken line retainer.  
Replace trimmer head  
assembly.  
Trimmer line not correct size. Use 3,3mm (0.130 inch)  
diameter trimmer line.  
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Code 407D  
REPAIR PARTS  
34  
1
2
13  
3
4
28  
33  
6
32  
5
2
7
9
8
4
6
10  
10  
16  
17  
11  
9
4
19  
14  
20  
11  
15  
12  
18  
31  
27  
14  
19  
16  
22  
29  
18  
30  
21  
23  
24  
25  
26  
20  
6
17  
22  
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Code 407D  
REPAIR PARTS  
Key  
No.  
Part No.  
Description  
1
MU740198E549 Lever, Stop  
2
MU323035  
MU740193  
MU071372  
Bolt  
3
Cable, Control Latching  
Tie, Cable  
4
5
MU740196E701 Handlebar  
6
MU15x116  
MU1601039  
MU672510  
MU740202  
MU783000  
MU711936  
MU711937  
MU672292  
MU740158  
Nut  
7
Control, Throttle  
Guide, Rope  
Knob, Handlebar  
Washer  
8
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  
−−  
−−  
−−  
−−  
Washer, Spring  
Bolt  
Spacer  
Pivot, Handlebar  
MU740195E701 Handlebar, Lower  
MU740185  
MU015x84  
MU0020x3  
MU740190  
MU740188  
MU26x274  
MU711935  
Wheel & Tire  
Nut, Axle  
Washer  
Spacer  
Assembly, Axle & Bracket  
Screw  
Bolt, Carriage  
MU740150E549 Deck  
MU0025x6  
MU740192  
MU001x45  
MU26x267  
−−−−−  
Bolt  
Shield, Trailing  
Bolt  
Screw  
Engine  
MU711890  
MU015x88  
MU1601040  
MU26x268  
MU042294  
MU712409  
MU713004  
MU712416  
MU713006  
MU276798MA  
Protection, Eye  
Nut  
Support, Handle  
Screw  
Clamp, Throttle  
Decal, Engine Stop  
Decal, Powertrim (not shown)  
Decal, Hayter (not shown)  
Decal, Warning (not shown)  
Instruction Book & Parts List  
23  
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Code 407D  
REPAIR PARTS  
1
2
3
4
5
7
8
6
24  
15  
25  
26  
16  
17  
18  
9
10  
1
19  
11  
20  
27  
14  
12  
13  
29  
30  
31  
33  
31  
22  
23  
24  
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Code 407D  
REPAIR PARTS  
Key  
No.  
Part No.  
MU015x84  
MU025x11  
Description  
Nut  
1
2
Screw  
3
MU740150E549 Frame, Trimmer  
Screw  
4
MU26x256  
MU740231 Z  
MU009x48  
MU712403  
MU740292  
MU15x119  
MU17x104  
MU740171  
MU740173  
MU711933  
MU740244  
MU740179  
MU740183  
MU018x31  
MU001x20  
MU26x235  
MU770070  
MU740206  
MU26x294  
MU1001049  
MU740300  
MU740163  
MU712126  
5
Bracket, Idler Assembly  
Bolt  
6
7
Spring  
8
Spacer  
9
Nut  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
22  
23  
24  
25  
26  
27  
29  
30  
31  
33  
Washer  
Pulley, Cutting Head  
Spacer  
Belt  
Pulley, Idler  
Pulley, Engine  
Pulley, Idler  
Lockwasher  
Bolt  
Screw  
Guard Assembly  
Guard  
Screw  
Jackshaft Housing Assembly  
Shaft, Cutting  
Wrap, Upper Head  
Screw  
MU740175E549 Assembly, Cutting Disc  
MU712127  
MU740164  
MU740299  
Screw, Set  
Line, Cutting  
Guide Assembly, Metal Height  
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NOTES  
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NOTES  
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How To Order Replacement Parts  
Use only manufacturer’s authorised or approved replacement parts. The letter  
placed on the end of the part number denotes the type of finish for the part, C for  
chrome, Z for zinc, a PA for purchased assembly. It is important that you include  
this when ordering a part. Do not use attachments or accessories not specifically  
recommended for this unit. In order to obtain proper replacement parts you must  
supply the model number of your machine (see serial number).  
Replacement parts, except for the engine, transmission, transaxle or differential,  
are available from your local Hayter authorised dealer, the store where the  
mower was purchased or a service shop recommended by the store.  
If you are unable to obtain parts or service in the manner outlined above, then  
contact:  
HAYTER LIMITED,  
Service Department,  
Spellbrook,  
Bishop’s Stortford,  
Hertfordshire. CM23 4BU  
When ordering the following information is required:  
(1) The Model Number  
(2) Serial Number  
(3) Part Number  
(4) Quantity  
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