OperatiOn Manual
SerieS
MODel eHtX44Y5
riDe-On trOWel
(YanMar 3tnV84t-BKSa DieSel enGine)
Revision #0 (01/16/13)
To find the latest revision of this
publication, visit our website at:
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
pn: 32080
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SilicOSiS/reSpiratOrY WarninGS
WARNING WARNING
SILICOSIS WARNING
RESPIRATORY HAZARDS
Grinding/cutting/drilling of masonry, concrete, metal and
other materials with silica in their composition may give
off dust or mists containing crystalline silica. Silica is a
basic component of sand, quartz, brick clay, granite and
numerous other minerals and rocks. Repeated and/or
substantial inhalation of airborne crystalline silica can
cause serious or fatal respiratory diseases, including
silicosis. In addition, California and some other
authorities have listed respirable crystalline silica as a
substance known to cause cancer. When cutting such
materials, always follow the respiratory precautions
mentioned above.
Grinding/cutting/drilling of masonry, concrete, metal and
other materials can generate dust, mists and fumes
containing chemicals known to cause serious or fatal
injury or illness, such as respiratory disease, cancer,
birth defects or other reproductive harm. If you are
unfamiliar with the risks associated with the particular
process and/or material being cut or the composition of
the tool being used, review the material safety data
sheet and/or consult your employer, the material
manufacturer/supplier, governmental agencies such as
OSHA and NIOSH and other sources on hazardous
materials. California and some other authorities, for
instance, have published lists of substances known to
cause cancer, reproductive toxicity, or other harmful
effects.
Control dust, mist and fumes at the source where
possible. In this regard use good work practices and
follow the recommendations of the manufacturers or
suppliers, OSHA/NIOSH, and occupational and trade
associations. Water should be used for dust
suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mists and fumes cannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHA for
the materials being used.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 3
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taBle Of cOntentS
eHtX ride-On trowel
NOTICE
Fuel And Chemical Exposure Warnings.................. 2
Silicosis/Respiratory Warnings................................ 3
Table Of Contents.................................................... 4
Training Checklist .................................................... 6
Daily Pre-Operation Checklist ................................. 7
Safety Information .............................................. 8-13
Dimensions/Specifications..................................... 14
Specifications ........................................................ 15
General Information............................................... 16
Controls And Indicators .................................... 17-18
Engine Components ............................................. 19
Setup ..................................................................... 20
Inspection .............................................................. 21
Operation.......................................................... 22-25
Maintenance..................................................... 26-43
Wiring Diagram (Electrical) ................................... 44
Hydraulic Diagram ................................................ 45
Troubleshooting (Trowel)................................... 46-47
Troubleshooting (Engine).................................. 48-49
Specifications and part numbers are subject to change
without notice.
page 4 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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nOteS
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 5
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traininG cHecKliSt
TRaININg CHeCKLIST
This checklist will list some of the minimum requirements for machine maintenance and operation. Please feel free to
detach it and make copies. Use this checklist whenever a new operator is to be trained or it can be used as a review for
more experienced operators.
Training Checklist
No.
Description
OK?
Date
Read operation manual
completely
1
Machine layout, location of
components, checking of engine
and hydraulic oil levels
2
3
4
Fuel system, refueling procedure
Operation of spray and lights
Operation of controls (machine
not running)
5
Safety controls, safety stop switch
operation
6
7
8
Emergency stop procedures
Startup of machine, pre-heat,
engine choke
9
Maintaining a hover
Maneuvering
10
11
12
Pitching
Matching blade pitch. Twin-Pitch™
13
Concrete finishing techniques
14
15
16
Shutdown of machine
Lifting of machine (lift loops)
Machine transport and storage
page 6 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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DailY pre-OperatiOn cHecKliSt
Daily pre-Operation Checklist
1
Engine oil level
Hydraulic oil level
2
3
4
5
6
7
Radiator coolant level
Condition of blades
Blade pitch operation
Safety stop switch operation
Steering control operation
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 7
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SafetY infOrMatiOn
Do not operate or service the equipment before reading
the entire manual. Safety precautions should be followed
at all times when operating this equipment.
Failure to read and understand the safety
messages and operating instructions could
result in injury to yourself and others.
Potential hazards associated with the operation of this
equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.
Symbol
Safety Hazard
SaFeTy meSSageS
Lethal exhaust gas hazards
The four safety messages shown below will inform you
about potential hazards that could injure you or others.The
safety messages specifically address the level of exposure
to the operator and are preceded by one of four words:
DaNgeR, WaRNINg, CauTION or NOTICe.
Explosive fuel hazards
Burn hazards
SaFeTy SymBOLS
DaNgeR
Indicates a hazardous situation which, if not avoided,
WILL result in DeaTH or SeRIOuS INJuRy.
WaRNINg
Indicates a hazardous situation which, if not avoided,
COuLD result in DeaTH or SeRIOuS INJuRy.
Rotating parts hazards
CauTION
Indicates a hazardous situation which, if not avoided,
COuLD result in mINOR or mODeRaTe INJuRy.
NOTICE
Pressurized fluid hazards
Addresses practices not related to personal injury.
Hydraulic fluid hazards
page 8 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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SafetY infOrMatiOn
geNeRaL SaFeTy
NOTICE
CauTION
„ This equipment should only be operated by trained and
qualified personnel 18 years of age and older.
„ NeveR operate this equipment without proper protective
clothing, shatterproof glasses, respiratory protection,
hearing protection, steel-toed boots and other protective
devices required by the job or city and state regulations.
„ Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
„ Manufacturer does not assume responsibility for any
accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.
„ NeveR use accessories or attachments that are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.
„ Avoid wearing jewelry or loose fitting clothes that may
snag on the controls or moving parts as this can cause
serious injury.
„ aLWayS know the location of the nearest
fire extinguisher.
„ NeveR operate this equipment when not
feeling well due to fatigue, illness or when
under medication.
„ aLWayS know the location of the nearest
first aid kit.
„ NeveR operate this equipment under the
influence of drugs or alcohol.
„ aLWayS know the location of the nearest phone or keep
a phone on the job site. Also, know the phone numbers
of the nearest ambulance, doctor and fire department.
This information will be invaluable in the case of an
emergency.
„ aLWayS clear the work area of any debris, tools, etc.
that would constitute a hazard while the equipment is
in operation.
„ No one other than the operator is to be in the working
area when the equipment is in operation.
„ DO NOT use the equipment for any purpose other than
its intended purposes or applications.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 9
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SafetY infOrMatiOn
TROWeL SaFeTy
NOTICE
„ aLWayS keep the machine in proper running condition.
DaNgeR
„ Fix damage to machine and replace any broken parts
immediately.
„ Engine fuel exhaust gases contain poisonous carbon
monoxide. This gas is colorless and odorless, and can
cause death if inhaled.
„ aLWayS store equipment properly when it is not being
used.Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel.
„ The engine of this equipment requires an adequate free
flow of cooling air.NeveR operate this equipment in any
enclosed or narrow area
„ A safety manual for operating and maintenance
personnel of concrete power trowels produced by the
Association of Equipment Manufacturers (AEM) can be
obtained for a fee by ordering through their website at
where free flow of the air is
restricted. If the air flow is
restricted it will cause injury
to people and property and
serious damage to the
equipment or engine.
DANGEROUS
GAS FUMES
Order FORM PT-160
eNgINe SaFeTy
WaRNINg
„ NeveRoperatetheequipmentinanexplosive
atmosphereornearcombustiblematerials.An
explosion or fire could result causing severe
bodily harm or even death.
„ DO NOT place hands or fingers inside engine
compartment when engine is running.
WaRNINg
„ NeveR operate the engine with heat shields or
guards removed.
„ If applicable, NeveR use your hand to find
hydraulic leaks. Use a piece of wood or
cardboard. Hydraulic fluid injected into the
skin must be treated by a knowledgeable
physician immediately or severe injury or
death can occur.
„ Keep fingers, hands hair and clothing away
from all moving parts to prevent injury.
„ DO NOT remove the radiator cap while the
engine is hot. High pressure boiling water will gush out
of the radiator and severely scald any persons in the
general area of the trowel.
„ aLWayS keep clear of rotating or moving
parts while operating the trowel.
„ NeveR disconnect any emergency
or safety devices. These devices are
intended for operator safety. Disconnection of these
devices can cause severe injury, bodily harm or even
death. Disconnection of any of these devices will void
all warranties.
„ DO NOT remove the coolant drain plug
while the engine is hot. Hot coolant will
gush out of the coolant tank and severely
scald any persons in the general area of
the trowel.
„ DO NOT remove the engine oil drain plug while the
engine is hot. Hot oil will gush out of the oil tank and
severely scald any persons in the general area of the
trowel.
CauTION
„ NeveR allow passengers or riders on the trowel during
operation.
CauTION
„ NeveR lubricate components or attempt service on a
running machine.
„ NeveR touch the hot exhaust manifold,
muffler or cylinder.Allow these parts to cool
before servicing equipment.
„ NeveR place your feet or hands inside the guard rings
while starting or operating this equipment.
page 10 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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SafetY infOrMatiOn
BaTTeRy SaFeTy
NOTICE
„ NeveR run engine without an air filter or with a dirty air
filter.Severe engine damage may occur.Service air filter
frequently to prevent engine malfunction.
DaNgeR
„ DO NOT drop the battery. There is a possibility that the
battery will explode.
„ NeveR tamper with the factory settings
of the engine or engine governor. Damage
to the engine or equipment can result
if operating in speed ranges above the
maximum allowable.
„ DO NOT expose the battery to open flames,
sparks, cigarettes, etc.The battery contains
combustible gases and liquids. If these
gases and liquids come into contact with a
flame or spark, an explosion could occur.
FueL SaFeTy
WaRNINg
DaNgeR
„ aLWayS wear safety glasses when
handling the battery to avoid eye irritation.
The battery contains acids that can cause
injury to the eyes and skin.
„ DO NOT start the engine near spilled fuel or combustible
fluids. Fuel is extremely flammable and its vapors can
cause an explosion if ignited.
„ Use well-insulated gloves when picking up
the battery.
„ aLWayS refuel in a well-ventilated area, away from
sparks and open flames.
„ aLWayS keep the battery charged. If the battery is not
charged, combustible gas will build up.
„ aLWayS use extreme caution when working with
flammable liquids.
„ DO NOT charge battery if frozen. Battery can explode.
When frozen, warm the battery to at least 61°F (16°C).
„ DO NOT fill the fuel tank while the engine is running
or hot.
„ aLWayS recharge the battery in a well-ventilated
environmenttoavoidtheriskofadangerousconcentration
of combustible gases.
„ DO NOT overfill tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or sparks from
the ignition system.
„ If the battery liquid (dilute sulfuric acid)
comes into contact with clothing or skin,
rinse skin or clothing immediately with
plenty of water.
„ Store fuel in appropriate containers, in well-ventilated
areas and away from sparks and flames.
„ NeveR use fuel as a cleaning agent.
„ DO NOT smoke around or near the
equipment. Fire or explosion could result
from fuel vapors or if fuel is spilled on a
hot engine.
„ If the battery liquid (dilute sulfuric acid) comes into
contact with eyes, rinse eyes immediately with plenty
of water and contact the nearest doctor or hospital to
seek medical attention.
CauTION
„ aLWayS disconnect the NegaTIve battery terminal
before performing service on the equipment.
„ aLWayS keep battery cables in good working condition.
Repair or replace all worn cables.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 11
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SafetY infOrMatiOn
TRaNSpORTINg SaFeTy
TOWINg SaFeTy
CauTION
CauTION
„ NeveR allow any person or animal to
stand underneath the equipment while
lifting.
„ Check with your local county or state safety
towing regulations, in addition to meeting
Department of Transportation (DOT)
SafetyTowing Regulations, before towing
your trowel.
„ Ride-on trowels are very heavy and
awkward to move around. Use proper
heavy lifting procedures and DO NOT
attempt to lift the trowel by the guard rings.
„ In order to reduce the possibility of an accident while
transporting the trowel on public roads, aLWayS make
sure the trailer that supports the trowel and the towing
vehicle are mechanically sound and in good operating
condition.
„ NeveR lift trowel with the operator on the machine.
NOTICE
„ aLWayS shutdown engine before transporting
„ The easiest way to lift the trowel is to utilize the lift loops
that are welded to the frame.These lift loops are located
to the left and right sides of the operator’s seat.
„ Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer “gross
vehicle weight rating.”
A strap/chain can be attached to these lift loops, allowing
a forklift or crane to lift the trowel up onto and off of a slab
of concrete. The strap or chain should have a minimum
of 2,000 pounds (1,000 kg) lifting capacity and the lifting
gear must be capable of lifting at least this amount.
„ aLWayS inspect the hitch and coupling for wear. NeveR
tow a trailer with defective hitches, couplings, chains, etc.
„ Check the tire air pressure on both towing vehicle and
trailer. Manufacturer recommends that trailer tires be
inflated to 50 psi cold. Also check the tire tread wear
on both vehicles.
„ NeveR transport trowel with float pans attached unless
safety catches are used and are specifically cleared for
such transport by the manufacturer.
„ aLWayS make sure the trailer is equipped with a safety
chain.
„ NeveR hoist the trowel more than three feet off the
ground with float pans attached.
„ aLWayS properly attach trailer’s safety chains to towing
vehicle.
„ Before lifting, make sure that the lift loops are not
damaged.
„ aLWayS make sure the vehicle and trailer directional,
backup, brake and trailer lights are connected and
working properly.
„ Always make sure crane or lifting device has been
properly secured to the lift loops of the equipment.
„ aLWayS shutdown engine before transporting.
„ DOT Requirements include the following:
„ NeveR lift the equipment while the engine is running.
• Connect and test electric brake operation.
„ Tighten fuel tank cap securely and close fuel cock to
prevent fuel from spilling.
• Secure portable power cables in cable tray with tie
wraps.
„ Use adequate lifting cable (wire or rope) of sufficient
strength.
„ The maximum speed for highway towing is 55 MPH unless
posted otherwise.Recommended off-road towing is not to
exceed 15 MPH or less depending on type of terrain.
„ DO NOT lift machine to unnecessary heights.
„ Avoid sudden stops and starts.This can cause skidding,
or jack-knifing. Smooth, gradual starts and stops will
improve towing.
„ aLWayS tie down equipment during transport by
securing the equipment with straps. Inspect straps to
make sure they are not frayed or damaged.
page 12 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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SafetY infOrMatiOn
„ Avoid sharp turns to prevent rolling.
emISSIONS INFORmaTION
„ Trailer should be adjusted to a level position at all times
when towing.
NOTICE
The diesel engine used in this equipment has been
designed to reduce harmful levels of carbon monoxide
(CO), hydrocarbons (HC) and nitrogen oxides (NOx)
contained in diesel exhaust emissions.
„ Raise and lock trailer wheel stand in up position when
towing.
„ Place chock blocks underneath wheel to prevent rolling
while parked.
This engine has been certified to meet US EPA Evaporative
emissions requirements in the installed configuration.
„ Place support blocks underneath the trailer’s bumper to
prevent tipping while parked.
Attempting to modify or make adjustments to the engine
emission system by unauthorized personnel without proper
training could damage the equipment or create an unsafe
condition.
„ Use the trailer’s swivel jack to adjust the trailer height to
a level position while parked.
eNvIRONmeNTaL SaFeTy/DeCOmmISSIONINg
Additionally, modifying the fuel system may adversely affect
evaporative emissions, resulting in fines or other penalties.
NOTICE
emission Control Label
Decommissioning is a controlled process used to safely
retire a piece of equipment that is no longer serviceable.
If the equipment poses an unacceptable and unrepairable
safety risk due to wear or damage or is no longer cost
effective to maintain (beyond life-cycle reliability) and is to
be decommissioned (demolition and dismantlement),be
sure to follow rules below.
The emission control label is an integral part of the emission
system and is strictly controlled by regulations.
The label must remain with the engine for its entire life.
If a replacement emission label is needed, please contact
your authorized Yanmar Engine Distributor.
„ DO NOT pour waste or oil directly onto the ground, down
a drain or into any water source.
„ Contact your country's Department of
Public Works or recycling agency in your
area and arrange for proper disposal of
any electrical components, waste or oil
associated with this equipment.
„ When the life cycle of this equipment is over, remove
battery and bring to appropriate facility for lead
reclamation. Use safety precautions when handling
batteries that contain sulfuric acid.
„ When the life cycle of this equipment is over, it is
recommended that the trowel frame and all other metal
parts be sent to a recycling center.
Metal recycling involves the collection of metal from
discarded products and its transformation into raw
materials to use in manufacturing a new product.
Recyclers and manufacturers alike promote the process
of recycling metal. Using a metal recycling center
promotes energy cost savings.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 13
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DiMenSiOnS/SpecificatiOnS
EHTX
C-HEIGHT
B-WIDTH
A-LENGTH
Figure 1. EHTX44Y5 Dimensions
Table 1. eHTx44y5 Specifications
96.75 (246)
A–Length – in. (cm)
B–Width – in. (cm)
C–Height – in. (cm)
50.0 (127)
57.0 (145)
Weight – lbs. (kgs.) Operating
Weight – lbs. (kgs.) Shipping
Blade Tip Speed – FPM (m/s)
Rotor – RPM
1,946 (882.7)
(Less Pallet Material) 1926 (873.6)
1,924 (9.9)
0 to 160
Path Width – in. (cm)
91 (231)
7.0 gal. (26.5 liters) Less Filter Change2
Add .5 gal. (1.9 liters) With Filter Change2
Hydraulic Oil Capacity
Hydraulic Oil1
AW MV ISO68
(10W-40 Hot Weather)
(10W-30 Cold Weather)
1. “AW” stands for anti-wear and “MV” stands for multi-viscosity. The 68 refers to the general viscosity range and is similar to 10W-30-motor oil. It is recommended that AW MV 68
hydraulic oil be used. If this type of hydraulic oil is not available then use 10W-30 engine oil (cold weather) or 10W-40 engine oil (hot weather).
2. Hydraulic Oil should be above the sight glass when cold.
page 14 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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SpecificatiOnS
Table 2. Noise and vibration emissions
Guaranteed ISO 11201:2010 Based
Sound Pressure Level at Operator Station in dB(A)a
89
Guaranteed ISO 3744:2010 Based
Sound Power Level in dB(A)b
106
Whole Body Vibration Per ISO 2631-1:1997+A1:2010
in m/s2 ∑A(8)
0.06
a. With an uncertainty factor K of 2.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011
b. With an uncertainty factor K of 1.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011
NOTeS:
1. Sound Pressure and Power Levels are “A” weighted Measures per ISO 3744:2010. They are measured with the operating condition of the
machine which generates the most repeatable but highest values of the sound levels. Under normal circumstances, the sound level will vary
depending on the condition of the material being worked upon.
2. The vibration level indicated is the vector sum of the RMS (Root Mean Square) Values of amplitudes on each axis, standardized to an 8 hour
exposure period, and obtained using operating condition of the machine that generates the most repeatable but highest values in accordance
with the applicable standards for the machine.
3. Per EU Directive 2002/44/EC, the daily exposure action value for whole body vibration is 0.5 m/s2 ∑A(8). The daily exposure limit value is
1.15 m/s2 ∑A(8).
Table 3. engine Specifications
model
Type
yanmar 3TNv84T-BKSa
Vertical inline water cooled diesel engine - direct injected - turbocharged
3
Cylinders
Displacement
Power (Maximum Output)
Bore and Stroke
Cooling System
Engine Oil Capacity
P.T.O Position
Fuel Tank
91.29 cu-in. (1.496 L)
44 HP (32.8 kW/min-1)
3.31 in. x 3.54 in. (84 mm x 90 mm)
Water-Cooled Radiator, Water-antifreeze ratio 50/50
7.08 US qt. (6.7 liter) dipstick upper limit
Flywheel side
Approx. 11 U.S. gallons (41.64 liters)
Fuel
Diesel - No. 2-D (ASTM D975)
12V Electric Starter with Glow Plug
341.7 lbs (155 Kg.)
Starting System
Dry Weight
22.2 in. x 19.1 in. x 24.5 in
Dimensions (L x W x H)
(564 mm x 486 mm x 622 mm).
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 15
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General infOrMatiOn
INTeNDeD uSe
eNgINe
Operate the EHTX44Y ride-on trowel, tools and components
in accordance with the manufacturer's instructions. Use of
any other tools for stated operation is considered contrary to
designated use. The risk of such use lies entirely with the
user. The manufacturer cannot be held liable for damages
as a result of misuse.
This trowel is equipped with a liquid cooled 44 HPYanmar
diesel engine. Refer to the engine owner’s manual for
specific instructions regarding engine operation. This
manual is included with the trowel at the time of shipping.
Please contact the Multiquip parts department if a
replacement manual is required
RIDe-ON TROWeL FamILaRIzaTION
BLaDeS
The EHTX44Y is designed for the floating and finishing of
concrete slabs.
The blades of the ride-on power trowel finish the concrete
as they are swirled around the surface. Blades are classified
as combination (10 or 8 inches wide), finish (6 inches wide).
The EHTX44Y is equipped with five blades per rotor equally
spaced in a radial pattern and attached to a vertical rotating
shaft by means of a spider assembly.
Take a walk around your trowel. Take notice of all the
major components like the engine, blades, air cleaner,
fuel system, fuel shut-off valve, ignition switch etc. Ensure
engine and gearbox lubricant levels are within proper
operating range and maintain a proper level of hydraulic
fluid in the hydraulic fluid reservoir.
HyDRauLIC mOTOR
Two independent hydrostatic drive motors are coupled to
the engine-powered hydrostatic pump. Each motor drives
a spider assembly
Read all the safety instructions carefully.Safety instructions
will be found throughout this manual and on the machine.
Keep all safety information in good, readable condition.
Operators should be well trained on the operation and
maintenance of the trowel.
HyDRauLIC STeeRINg
Dual palm grip joystick controls located to the left and
right of the operator are provided for steering the trowel.
The joysticks are linked to three hydraulic steering
cylinders located within the frame of the machine. Detailed
explanation of how the joystick controls affect the steering
of the trowel can be found in the Operation section of this
manual.
Look at the operator Control Joysticks. Grasp the Control
Joysticks and move them around a bit. Observe how
moving the Control Joysticks cause the gearboxes and
frame to move.
Notice the foot pedal which controls the engine and blade
speed. Also take a look at the main driveline of the trowel.
Take note and reference how the belts look, this is the way
the belts should look when adjusted properly.
See the steering chart (Table 4) for infomation on the effect
the steering joysticks have upon the steering direction of
the machine.
Before using your trowel, test it on a flat watered down
section of finished concrete.This trial test run will increase
your confidence in using the trowel and at the same time it
will familiarize you with the trowel’s controls and indicators.
In addition you will understand how the trowel will handle
under actual conditions.
HyDRauLIC pump
Tandem hydraulic pump delivers controlled flow of hydraulic
fluid to the hydraulic motors.
TRaININg
For proper training, please use the “TRaININg
CHeCKLIST” located in the front of this manual. This
checklist will provide an outline for an experienced operator
to provide training to a new operator.
page 16 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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cOntrOlS anD inDicatOrS
1
4
13
2
5
14
15
6
3
7
16
EHTX
18
8
11
9
17
19
10
10
12
12
Figure 2. EHTX Controls and Components (Front)
Figure 2 and Figure 3 show the location of the controls,
11. Foot pedal – Controls blade speed. Slow blade
speed is accomplished by slightly depressing the foot
pedal. Maximum blade speed is accomplished by fully
depressing the foot pedal.
indicators and general maintenance parts.The function of
each control, indicator or maintenance part is explained
below and on next page.
1. Seat – Place for operator to sit. Trowel blades will not
rotate unless operator is seated. Seat is adjustable.
12. Removable Steps (Left and Right) – Provides for
safe footing for mounting and dismounting trowel.
When removed, provides access to spider and blade
assemblies.
2. Trowel Speed Limiter Control – Used to adjust the
maximum trowel speed that can be obtained when the
foot pedal is fully depressed.
13. Retardant Spray Control Buttons (Left and Right) –
When pressed allows retardant spray to flow through
the spray nozzle located at the front of the machine.
3. Hour meter – Indicates number of hours machine
has been used.
14. Hand grip – Use to assist safe mounting and
dismounting of trowel.
4. Throttle Control Lever – Controls the speed of
the engine. Move the hand lever forward to increase
engine speed (high), backwards to decrease engine
speed (low).
15. Lift Loops – Located on both the left and right sides
of the main frame. Used when the trowel must be lifted
onto a concrete slab.
5. Operator gauges – Allows operator to monitor engine,
hydraulic and electrical functions.
16. pitch Block – (Behind grill guard.) Measure and adjust
pitch pressure at the pitch block.
6. Ignition Switch – With key inserted turn clockwise to
start engine.
17. Fuel gauge/Filler Cap – Indicates the amount of fuel
in the fuel tank. Remove this cap to add fuel.
7. Light Switch – When activated, turns on six halogen
lights.Lights offer better visibility when working indoors.
18. Overflow Bottle – (Behind grill guard.) Supplies water
or coolant to the radiator when radiator water or coolant
level is low. Fill to indicated level as shown on bottle.
8. Lights – Six low voltage halogen lights are provided
with this unit.
19. Hydraulic Reservoir – Part of frame. Holds hydraulic
oil necessary for pump operation.
9. Toolbox Compartment – Storage for tools.
10. Spray Nozzles – Spray nozzle for retardant.Two spray
nozzles are supplied with this unit.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 17
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cOntrOlS anD inDicatOrS
20
28
25
27
26
24
29
29
30
22
21
23
31
Figure 3. EHTX Controls and Components (Rear)
27. Blade pitch Control (Twin pitch)™ – Adjusts the
blade pitches simultaneously.
20. Documentation Box – Storage for documentation
and other information regarding the trowel.
28. Steering Control (Right Side) – Allows the unit to
move in either a forward, reverse left or right direction.
21. Battery – Provides +12V DC power to the electrical
system.
29. grill guards (Left and Right) – Protects operator from
moving components. Remove for maintenance access.
22. Hydraulic Oil Sight glass – Indicates the level of the
hydraulic oil in the reservoir.
30. Hydraulic Oil Filler Cap – Remove this cap to add
hydraulic oil. Open ONLy when system is cooled down
and all expanded oil has returned to the reservoir.
23. Hydraulic Suction Filter – Filters hydraulic fluid prior
to entering the system. (10 Micron absolute synthetic
media.)
31. Retardant SprayTank – Holds 5 gallons of retardant,
water, or other liquid.
24. Hydraulic Oil expansion Tank – Accommodates
expanding hydraulic oil as it gets hot. The oil gravity
flows back to the reservoir as it cools down, therefore
NeveR open the the Hydraulic Oil Filler Cap (Item 30)
when the system is warm and the oil has expanded.
WaRNINg
Engine components can generate extreme
heat. To prevent burns, DO NOT touch
these areas while the engine is running
or immediately after operating. NeveR
operatetheenginewiththemufflerremoved.
25. Steering Control (Left Side) – Allows the unit to move
in a forward or reverse direction only.
26. Blade pitch Control Switch (Left Side) – Adjusts the
left side blade pitch independently of the right side.
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enGine cOMpOnentS
22
11
16
6
12
17
12
23
1
18
15
9
10
3
8
2
4
7
14
19
13
21
5
6
20
Figure 4. Basic Engine Components
Figure 4 shows the basic engine components and their
functions. The manufacturer's engine manual provides
further instructions and details of operation and servicing.
11. muffler – Exhaust gases routed here through the
muffler.
12. Lifting eye – Two lifting eyes are provided if the
removal/installation of the engine becomes necessary.
1. Fuel Filter – Removes dirt and water from the engine
fuel.
13. alternator – Provides current to the electrical system
and charges the battery. Driven by means of a
crankshaft/V-belt pulley system.
2. engine Stop Lever –This lever restricts engine speed
(high idle and low idle) through a speed control device
linked to the accelerator system.
14. Starter – Starts engine when ignition key is rotated to
the "START" position.
3. Oil Dip Stick – Remove to check amount and condition
of oil in crankcase.
15. Flywheel – Main power is taken off from the flywheel
end.
4. Oil Filter – Spin-on type, filters oil for contaminants.
5. Oil Drain plug – Remove plug to drain crankcase oil.
6. Oil Filler port – Remove to add fresh crankcase oil.
16. air Intake port – Provides air from the air cleaner to
the turbocharger unit.
17. Turbocharger – Provides pressurized intake air to the
cylinder by means of a turbine energized by exhaust
gas that rotates the blower.
7. Crankshaft v-pulley – Check fan V-belt between
V-Pulley and alternator to determine proper belt
tension.
18. Throttle Lever – Controls engine rpm.
8. Cooling Fan – Driven by the V-belt, the cooling fan
cools the engine by cooling water/antifreeze mixture
that circulates through the engine block and cylinder
head.
19. Fuel pump – Provides fuel flow to injection pump.
20. Water pump – Circulates coolant flow through engine.
21. Injection pump – Provides equal fuel flow to injectors.
9. v-belt Tension adjustment – This bolt provides
means to adjust the V-belt tension at the alternator
bracket.
22. air Filter – Helps provide clean source of air flow to
turbocharger and engine.
23. Fuel/Water Separator – Separates water, dirt and
sludge from fuel helping prevent engine component
wear.
10. v-belt (Fan belt) – Driven by the engine crank during
operation, drives the water pump/fan as well as the
alternator.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 19
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Setup
TROWeL SeTup INSTRuCTIONS
DaNgeR
The purpose of this section is to assist the user in the setting
up of a NeW trowel. If your trowel is already assembled
(seats, handles, knobs and battery), then this section can
be skipped.
Use all safety precautions specified by the battery
manufacturer when working with the battery.
Flammable, explosive gas. (produces
hydrogen gas while charging or during
operation). Keep area around battery well
ventilated and keep from any fire source.
NOTICE
The new ride-on trowel cannot be put into service until
the setup installation instructions are completed.These
setup instructions only need to be performed at the time
of unpacking a NeW trowel.
Battery electrolyte contains corrosive, toxic
chemical. (dilute sulfuric acid). Avoid
contact with eyes and skin.
Shock or Fire due to electric short-
circuit. Disconnect battery cables before
inspecting electrical system and never
"spark" battery terminals to test for charge.
Before packaging and shipping this Whiteman Ride-On
Power Trowel was run and tested at the factory. If there are
problems with the trowel, please let us know.
SeaT aSSemBLy
NOTICE
NOTICE
aLWayS be sure the battery cables are properly
connected to the battery terminal. The ReD cable is
connected to the positive terminal of the battery, and
the BLaCK cable is connected to the negative terminal
of the battery.
EHTX trowels have a seat that is mounted on tracks,
similar to an automobile seat.This seat can be adjusted
fore and aft via the control lever under the front of the
seat.
The seat is not installed on the trowel for shipping purposes.
To attach the seat perform the following:
CauTION
Use all safety precautions specified by the battery
manufacturer when working with the battery. Reference
the safety section in this manual for additional battery
safety information.
1. Remove the seat from the protective wrapping.
2. Remove the bolts on the bottom of the seat, and place
seat on the seat mounting plate, then insert the bolts
through the holes or slots on the seat mounting plate
and tighten.
NEGATIVE
BaTTeRy SeTup
CABLE (BLACK)
This trowel was shipped with a wet charged battery. This
battery may need to be charged for a brief period of time
as per the manufacturer instructions.
To install the battery on the trowel, make sure that the
battery is well seated in the battery box and the terminals
are properly connected. The positive cable, normally
RED, is associated with the "+" symbol on the battery.The
negative cable, normally BLACK, is associated with the "-"
symbol on the battery, (Figure 5).Connect the positive cable
to the positive terminal on the battery first, then connect the
negative cable to the negative terminal. Close the plastic
battery box cover and secure the battery box.
BA
TTER
Y
POSITIVE
CABLE (RED)
Figure 5. Battery Cable Orientation
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inSpectiOn
This section is intended to assist the operator with the
initial start-up of the trowel. It is extremely important that
this section be read carefully before attempting to use the
trowel in the field.
HyDRauIC OIL LeveL
Determine if the hydraulic oil is low by observing the level of
oil in the hydraulic oil sight glass, (Figure 7). The hydraulic
tank has an elevated overflow bottle. DO NOT remove the
fill cap when the oil is hot or spillage will occur.
DO NOT use your ride-on power trowel until this section is
thoroughly understood.
WaRNINg
HYDRAULIC OIL
SIGHT GLASS
Failure to understand the operation of this ride-on trowel
could result in severe damage to the trowel or personal
injury.
eNgINe OIL LeveL
1. Lift (tilt) seat forward to access engine oil dipstick.
2. Pull the engine oil dipstick (Figure 6) from its holder.
UPPER
LEVEL
3. Determine if engine oil is low. Oil level should be
between the upper land lower limit on the dipstick.
4. If oil level is low add correct amount of engine oil to bring
oil level to a normal safe level (See Recommended
Viscosity Grades, Table 6).
LOWER
LEVEL
5. Allow enough time for any added oil to make its way
to the oil pan before rechecking.
Figure 7. Hydraulic Oil Sight Glass
CauTION
FueL
DO NOT overfill engine oil.Oil level should not be above
the top fill line.
To determine if the engine fuel is low, view the fuel gauge
(Figure 8) on the top of the fuel tank. If fuel level is low, fill
with clean fresh gasoline fuel.
ENGINE OIL
FILLER CAP
FUEL
DIPSTICK
E
F
DO NOT OVERFILL
F
Figure 8. Fuel Guage
UPPER
ENGINE OIL
LIMIT
FILLER CAP
LOWER
L
LIMIT
(ADD OIL)
WaRNINg
Handle fuel safely. Motor fuels are highly flammable
and can be dangerous if mishandled. DO NOT smoke
while refueling. DO NOT attempt to refuel the ride-on
trowel if the engine is hot or running.
Figure 6. Engine Oil Dipstick
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 21
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OperatiOn
STaRTINg THe eNgINe
ENGINE SPEED
CONTROL LEVER
1. Place one foot on the trowel's platform, grab hold of the
hand grip located on the front frame, and lift yourself
onto the trowel, then sit down in the operator's seat.
DO NOT use the joysticks to lift yourself onto the trowel.
H
I
G
H
NOTICE
L
O
W
Pulling on the joysticks repeatedly will weaken the
units. aLWayS use the grab handles to lift yourself
on the trowel.
NOTICE
Figure 9. Engine Speed Control Lever (Low)
This trowel is equipped with a safety stop switch that
will not allow the engine to start unless an operator is
sitting in the operator’s seat.The weight of an operator
depresses an electrical switch, which allows the engine
to start.
4. Insert the ignition key into the ignition switch, (Figure 10)
R
CONTACT
WaRNINg
NeveR disable or disconnect the safety stop switch.It is
provided for the operator's safety and injury may result
if it is disabled, disconnected or improperly maintained.
Figure 10. Ignition Switch and Key
5. Turn the ignition key clockwise to the (start) position.
The oil and charge indicator lights, (Figure 11) should
be on.
NOTICE
The safety stop switch should be used to stop the
engine after every use.Doing this will verify the switch is
working properly thus providing safety for the operator.
Remember to turn the key to the “OFF” position after
stopping the machine. Not doing so may drain the
battery.
2. It is recommended that the operation of the Safety Stop
Switch is checked prior to performing any troweling
operations. Doing this will verify that the switch is
working properly contributing to safe operation of the
machine.
Figure 11. Oil and Charge Indicator Lights
NOTICE
OIL, and CHARGE, indicator lights come on when
ignition switch is in the ON position, and the engine
is NOT running. In COLD weather turn and hold
the ignition key counter clockwise to the PREHEAT
position, wait until the preheat indicator goes off before
turning the ignition key clockwise to the start position.
Two or three preheat cycles may be necessary in very
cold weather.
3. Place the engine speed control lever, Figure 9 in the
LOW position.
page 22 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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OperatiOn
6. Turn ignition key fully clockwise and listen for engine
to start. Once engine has started release ignition key.
Let the engine warm for a few minutes.
2. Push both the left and right Control Joysticks forward.
See Figure 14
FORWARD
7. Place the engine speed control lever, (Figure 12) in
the HIgH position.
LEFT JOYSTICK
CONTROL
LEFT
ENGINE SPEED
CONTROL LEVER
FORWARD
REVERSE
RIGHT
REVERSE
L
RIGHT JOYSTICK
CONTROL
O
W
Figure 14. Left and Right Control Joysticks
Table 4. Control Joystick Directional positioning
Figure 12. Engine Speed Control Lever (High)
8. The engine should be running at full RPM's
9. Let the engine idle for 3-5 minutes.
CONTROL JOYSTICK
RESULT
& DIRECTION
Causes only the
left side of the
ride-on trowel to
Move LEFT Joystick
FORWARD
10. Repeat this section a few times to get fully acquainted
with the engine starting procedure.
move forward.
Causes only the
left side of the
ride-on trowel to
move backward.
Move LEFT Joystick
STeeRINg
BACKWARD
Two joysticks (Figure 14) located to the left and right of the
operator’s seat provide directional control for the trowel.
Table 4 illustrates the various directional positions of the
joysticks and their effect on the ride-on trowel.
Causes only the
Move RIGHT Joystick
right side of the
ride-on trowel to
move forward.
FORWARD
Move RIGHT Joystick
Causes only the
right side of the
ride-on trowel to
move backward.
NOTICE
BACWARD
All directional references with respect to the steering
Control Joysticks are from the operator’s seat
position.
Move BOTH Joysticks
Causes the ride-on trowel
to move forward in
a straight line.
FORWARD
1. The foot pedal, (Figure 13) solely controls blade
speed. The position of the foot pedal determines
the blade speed. Slow blade speed is obtained by
slightly depressing the pedal. Maximum blade speed
is obtained by fully depressing the pedal.
Causes the ride-on trowel
to move backard in
a straight line.
Move BOTH Joysticks
BACKWARD
Move BOTH Joysticks
Causes the ride-on trowel
to move to the right.
to the RIGHT
Move BOTH Joysticks
Causes the ride-on trowel
to move to the left.
to the LEFT
Figure 13. Blade Speed Control Foot Pedal
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 23
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OperatiOn
3. With your right foot quickly depress the right foot
pedal halfway. Notice that the ride-on power trowel
begins to move in a forward direction. Return both
joystick controls to their neutral position to stop forward
movement, then remove your right foot from the right
foot pedal.
Blade pitch Control
Sometimes it may be necessary to match blade pitch
between the two sets of blades. There are some signs
that this may be necessary. For example, the differences
in pitch could cause a noticeable difference in finish quality
between the two sets of blades.
4. Practice holding the machine in one place as you
increase blade speed. When about 75% of maximum
blade speed has been reached, the blade will be
moving at proper finishing speed.The machine may be
difficult to keep in one place.Trying to keep the ride-on
trowel stationary is a good practice for operation.
Or, the difference in blade pitch could make the machine
difficult to control.This is due to the surface area in contact
with the concrete (the blade set with the greater contact
area tends to stick to the concrete more).
Adjustment of the blade pitch is accomplished by the setting
of the two rocker switches located on the left control panel
next to the left joystick control, (Figure 16).
5. Practice maneuvering the ride-on trowel using the
information listed in Table 4. Try to practice controlled
motions as if you were finishing a slab of concrete.
Practice edging and covering a large area.
BLADE PITCH
ROCKER SWITCHES
6. Try adjusting the pitch of the blades.This can be done
with the ride-on trowel stopped or while the trowel is
moving, whatever feels comfortable.Test the operation
of optional equipment like retardant spray and lights
if equipped.
7. Pull both the left and right joysticks backward and
repeat steps 3 through 6 while substituting the word
reverse for forward.
Trowel Speed Limiter Control
Figure 16. Blade Pitch Control
Rocker Switches Location
The speed limiter control located on the control panel,
(Figure 15) can be used to adjust the maximum trowel
speed that can be obtained when the foot pedal is fully
depressed.Pull up to reduce the maximum speed and push
down to return to full speed. For fine adjustments, rotate
the knob clockwise or counter-clockwise.
The right rocker switch (Twin Pitch™) pitches both blades
at the same time while the left rocker switch (Figure 17)
will pitch only the left blade. Moving the switches forward
increases the pitch while moving them backward decreases
the blade pitch.
RIGHT ROCKER
SWITCH
LEFT ROCKER
SWITCH
LO
W
LEFT
PITCH
ONLY
TWIN
PITCH
MORE PITCH
LESS PITCH
BLADES TO BE FLAT
WITH FLOAT PANS
Figure 15. Trowel Speed Limiter Control
Figure 17. Blade Pitch Rocker Switches
page 24 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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OperatiOn
NOTICE
Important! To get the blades absolutely flat for using
float pans follow these steps:
1. Press right Twin Pitch™ rocker switch all the way
down.
2. Press left pitch rocker switch upward a little.
3. Press right Twin Pitch™ rocker switch all the way
down again.
4. Press left pitch rocker switch all the way down.
engine Shut-Down
1. Return the engine speed control lever, (Figure 18) to
low idle, and allow the engine to idle for a minimum
5 minutes.
ENGINE SPEED
CONTROL LEVER
H
I
G
H
L
O
W
Figure 18. Engine Speed Control Lever
Idle (Low Speed)
NOTICE
Failure to allow the engine to idle for a minimum of
5 minutes before shutting engine OFF may lead to
turbocharger damage.
2. Turn the ignition key counter-clockwise to the "starter
switch contact " position, then remove the key.
3. Clean and remove any foreign debris from the trowe
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 25
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Maintenance
l
Table 5. maintenance Schedule
periodic maintenance Interval
every every every
System
Check Item
DaILy
every every every every
1000
Hrs
1500
Hrs
2000
Hrs
50 Hrs 100 Hrs 250 Hrs 500 Hrs
Check Air Cleaner
X
Clean Air Cleaner Element
Replace Air Cleaner Element
Check and Refill Engine Coolant
Check and Clean Radiator Fins
X
X
X
X
X
X
1st time
2nd time
and
after
Check and Adjust Cooling Fan V-Belt
X
or yearly
which-
ever
Drain, Flush, and Refill Cooling System
With New Coolant
comes
first
engine
Check Engine Oil Level
Drain and Fill Engine Oil
X
X
2nd time
and
X
1st time
after
X
2nd time
and
X
1st time
Replace Engine Oil Filter
after
Check and Refill Fuel Tank Level
Drain Fuel Tank
X
X
X
Drain Fuel Filter/Water Separator
Check Fuel Filter/Water Separator
Clean Fuel Filter/Water Separator
Replace Fuel Filter
X
X
X
X
2nd time
and
X
1st time
Change Hydraulic Oil and Filter
after
Relube Arms, Thrust Collar, and Clutch
X
X
Remove, Clean, Reinstall, and Relube
Arms, and Thrust Collar
X
Trowel
Check and replace if necessary, arm
bushings and thrust collar bushings.
X
Check blades for excessive wear or
damage and replace as necessary.
X (if
needed)
Adjust Blade Speed
page 26 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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Maintenance
air Cleaner
NOTICE
CauTION
When performing any maintenance on the trowel or engine,
follow all safety messages and rules for safe operation
stated at the beginning of this manual
Wear protective equipment such as
approved safety glasses or face shields
and dust masks or respirators when
cleaning air filters with compressed air.
At the front of this manual there is a “Daily Pre-Operation
Checklist”. Make copies of this checklist and use it on a
daily basis
ThisYanmar diesel engine is equipped with a replaceable,
high-density paper air cleaner element (Figure 19). This
air cleaner may have an inner element (option) that is
used as a backup filter should the main element becomes
damaged.
WaRNINg
Accidental starts can cause severe injury
or death.
.
ARROW
MARK
(CASE)
ALWAYS place the ON/OFF switch in the
OFF position.
MAIN PAPER
AIR CLEANER
ELEMENT
ARROW
MARK
(DUST PAN)
Disconnect and ground spark plug leads
and disconnect negative battery cable
from battery before servicing.
AIR CLEANER
CASE
DUST PAN
INNER
ELEMENT
(OPTION)
WaRNINg
LATCH
Some maintenance operations may
require the engine to be run. Ensure
that the maintenance area is well
ventilated.Exhaust contains poisonous
carbon monoxide gas that can cause
unconsciousness and may result in
DeaTH
EVACUATOR
VALVE
Figure 19. Air Cleaner Components
1. Check the air cleaner daily or before starting the engine.
2. Check for and correct heavy buildup of dirt and debris
along with loose or damaged components.
CauTION
3. Replace the element if it is found to be damaged,
excessively dirty, or oily.
aLWayS allow the engine to cool
before servicing. NEVER attempt any
maintenance work on a hot engine.
4. Release the latches located on either side of the air
cleaner dust pan, and remove the dust pan.
5. Remove the air cleaner element.
CauTION
NOTICE
Certainmaintenanceoperationsormachineadjustments
require specialized knowledge and skill. Attempting
to perform maintenance operations or adjustments
without the proper knowledge, skills ortraining could
result in equipment damage or injury to personnel. If
in doubt, consult your dealer.
Operating the engine with loose or damaged air cleaner
components could allow unfiltered air into the engine
causing premature wear and failure.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 27
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Maintenance
6. Tocleanthemainelement(paperairfilter)asreferenced
in Figure 20, tap the filter element several times on a
hard surface to remove dirt, or blow compressed air
(not to exceed 30 psi (207 kPa, 2.1 kgf/cm2) through
the filter element from the inside out.
DO NOT OVERFILL
F
L
UPPER
LIMIT
DIPSTICK
LOWER
LIMIT
MAIN
PAPER AIR FILTER
ELEMENT
(ADD OIL)
Figure 21. Engine Oil Check
5. If oil level is low add correct amount of engine oil to bring
oil level to a normal safe level (See Recommended
Viscosity Grades, Table 6).
BLOW COMPRESSED
AIR FROM THE
INSIDE OUT
6. Allow enough time for any added oil to make its way
to the oil pan before rechecking.
Table 6. Oil Chart
Figure 20. Cleaning Paper Air Filter Element
NOTICE
DO NOT use excessive air pressure or the paper air
filter element will be damaged and will need to be
replaced.
7. Replace the element if it is damaged or excessively
dirty.
8. Clean the inside of the dust pan.
Changing engine Oil and Filter
9. Reinstall the element or if equipped, the precleaner
over the paper air cleaner element.
Change the engine oil and filter after the first 50 hours of
use, then every 6 months or 250 hours. Refer to Table 6
for recommended oil viscosity.
10. Reinstall the air cleaner dust pan and secure the
latches.
1. Prepare a waste oil collector to drain the oil into.
2. Remove the oil filler cap while draining the oil
(Figure 22) to allow the engine to drain easily.
NOTICE
DO NOT run the engine with the air cleaner removed
or without an element.
ENGINE OIL
DIPSTICK
FILLER CAP
Checking engine Oil (Daily)
1. When checking or adding oil, place the machine so
the engine is level.
2. Lift (tilt) seat forward to access engine oil dipstick.
3. Pull the engine oil dipstick from its holder.
OIL FILTER
OIL PAN
4. Determine if engine oil is low. Oil level should be
between the upper land lower limit (Figure 21) on the
dipstick.
DRAIN PLUG
Figure 22. Engine Oil Service Components
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Maintenance
Radiator/Cooling System
3. Remove the drain plug to drain the oil.
4. After oil is sufficiently drained, securely tighten the
drain plug.
COOLaNT (aNTIFReeze/SummeR COOLaNT/
WaTeR)
5. Using a filter wrench, turn the oil filter counter-clockwise
to remove.
yaNmaR recommends antifreeze/summer coolant for use in
their engines, which can be purchased in concentrate (and
mixed with 50% demineralized water) or pre-diluted. See the
yanmar engine Owner’s manual for further details.
6. Clean sealing surface on engine where filter mounts.
7. Coat the seal of the new oil filter with clean engine oil.
Install new filter first by hand until it contacts the engine
sealing surface. Tighten it another 3/4 turn using the
filter wrench.
WaRNINg
If adding coolant/antifreeze mix to the
radiator, DO NOT remove the radiator cap
until the unit has completely cooled. The
possibility of hot! coolant exists which can
cause severe burns.
8. Fill engine crankcase with high quality detergent oil
classified "For Service CF, or CF-4". Fill to the upper
limit of dipstick.DO NOT overfill.Crankcase oil capacity
with oil filter replacement is 3.5 qts. (3.3 liters).
Day-to-day addition of coolant is done from the recovery
tank.When adding coolant to the radiator, DO NOT remove
the radiator cap until the unit has completely cooled. See
Table 7 for engine, radiator, and recovery tank coolant
capacities.Make sure the coolant level in the recovery tank
is always between the “H” and the “L” markings.
9. Run the engine briefly for several minutes. Watch for
oil leakage. Shut the engine down and allow it to sit
for several minutes.Top off the oil to the upper limit on
the dipstick.
10. Be sure to coat the seal (Figure 23) of the new oil filter
with clean engine oil.
Table 7. Coolant Capacity
Engine and Radiator
Reserve Tank
2.5 gal (9.5 liters)
16 oz. (0.5 liters)
OIL
FILTER
Operation in Freezing Weather
When operating in freezing weather, be certain the proper
amount of antifreeze Table 8 has been added.
SEAL
Table 8. anti-Freeze OperatingTemperatures
Figure 23. Oil Filter/Seal
Vol %
Anti-
Freeze
Freezing Point
Boiling Point
°C
°F
°C
°F
50
-37
-34
108
226
NOTICE
When the antifreeze is mixed with water, the antifreeze
mixing ratio must be less than 50%.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 29
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Maintenance
Radiator maintenance
Fuel Filter
1. Check radiator for leaks that would indicate corrosion
or damage.
Replace the engine fuel filter (Figure 25) every 800 hours.
Refer to your engine manual for specific details to perform
this operation.
2. Check coolant level daily.Top off as necessary.Always
use recommended coolant/antifreeze. Use the mixing
ratios specified by the coolant/antifreeze manufacturer
or Table 8. Replace coolant/antifreeze at least once a
year.
3. Check radiator hoses for fatigue or cracking. Replace
any defective hoses immediately.
4. Check radiator cap seal and replace as necessary.
5. Blow off dirt and dust from fins and radiator with 28 psi
(193 kPa) or less of compressed air (Figure 24). Be
careful not to damage the fins with the compressed air.
Figure 25. Fuel Filter
Fuel/Water Separator
RADIATOR
CAP
1. Inspect the fuel filter water separator daily. If the fuel
filter/water separator (Figure 26) has collected a
significant amount of water and sediment at the bottom
of the cup, it should be drained off.
COOLING
FINS
2. To remove water and sediment from the cup, place the
fuel cock valve in the OFF position and unscrew the
cup from the retaining ring
3. Pour the contents of the cup into a safety container.
Rinse cup with a mild detergent and reattach cup to
retaining ring.
COMPRESSED AIR
OR
4. Place fuel cock valve in thew ON position.
PRESSURE WASHER
Figure 24. Radiator Cleaning
FUEL
NOTICE
COCK
NeveR use high-pressure water or compressed air at
greater than 28 psi (193 kPa) or a wire brush to clean
the radiator fins. Radiator fins damage easily.
RETAINING
RING
CUP
6. If there is a large amount of contamination on the fins,
use detergent to clean and rinse thoroughly with tap
water. T
SEDIMENT
Figure 26. Fuel Water Separator
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Maintenance
Oil and Fuel Lines
Battery/Charging System
1. Check the oil and fuel lines and connections regularly
for leaks or damage. Repair or replace as necessary.
DaNgeR
Use all safety precautions specified by the battery
manufacturer when working with the battery.
2. Replace the oil and fuel lines every two years to
maintain the line's performance and flexibility.
Flammable, explosive gas. (produces
hydrogen gas while charging or during
operation). Keep area around battery well
ventilated and keep from any fire source.
CHeCKINg THe v-BeLT
The V-belt (Figure 27) needs to be replaced as soon as it
starts to show signs of wear.NeveR use a defectiveV-belt
under any circumstances.Indications of excessive belt wear
are fraying, squealing when in use, a belt that emits smoke
or a burning rubber smell when in use.
Battery electrolyte contains corrosive, toxic
chemical. (dilute sulfuric acid). Avoid
contact with eyes and skin.
OIL SOAKED
Shock or Fire due to electric short-
circuit. Disconnect battery cables before
inspecting electrical system and never
"spark" battery terminals to test for charge.
CORD FAILURE
GLAZED
1. Check and clean battery terminals for corrosion.
WORN BACK
COVER
2. Check and keep battery electrolyte between upper and
lower limits indicated on the battery. Never operate or
recharge without sufficient fluid in the battery.
BROKEN
3. Never attempt to charge a battery that is frozen. The
battery can explode unless first allowed to thaw.
MISSING RUBBER
CRACKS
SIDEWALL
WEAR
4. Disconnect the negative terminal ( - ) of the battery
during storage. If unit will be stored where ambient
temperature will drop to -15oC or less, remove and
store battery in a warm, dry place
Figure 27. V-Belt Inspection
1. Visually inspect V-belt (Figure 27) for signs of damage
or excessive wear.IfV-belt is worn or damaged, replace
V-belt.
LongTerm Storage
„ Remove the battery.
2. Check to ensure that theV-belt is tensioned and aligned
correctly.
„ Drain the fuel tank completely.Treat with a fuel stabilizer
if necessary.
„ Clean exterior with a cloth soaked in clean oil.
„ Store unit covered with plastic sheet in moisture and
dust-free location out of direct sunlight.
CauTION
NeveR store the ride-on trowel with fuel in the tank for
any extended period of time. Always clean up spilled
fuel immediately.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 31
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Maintenance
engine Tune-up
Right Side Trowel Speed adjustment
See your engine manual for specific information on tuning
up your engine.
The right side trowel speed is adjusted by changing the
length of the connecting rod (Figure 29) on the pump
actuation levers.This is accomplished by adjusting the right
side adjustment nut.
NOTICE
PUMP ACTUATION
LEVERS
See the engine manual supplied with your machine
for appropriate engine maintenance schedule and
troubleshooting guide for problems.
HYDRAULIC
PUMP
TOP VIEW
CauTION
aLWayS disconnect battery cables before attempting
any service or maintenance on the ride-on trowel.
RIGHT-SIDE
ADJUSTMENT
NUT
CONNECTING
ROD
Checking/adjustingTrowel Speed
LEFT-SIDE
ADJUSTMENT
NUT
Becausethetwohydraulicdrivemotorsoperateindependent
of each other, the trowel speed between them may vary.
If the unit’s steering is difficult to control, or if one spider
is spinning noticeably faster or slower than the other,
the trowel speed may need to be checked. It is also
recommended that the trowel speed be checked at least
once a year.
Figure 29. Pump Adjustment Components
This rod is basically a turnbuckle, (Figure 29). Rotating it
in one direction increases the length and corresponding
trowel speed. Rotating it the opposite direction decreases
the length and trowel speed. The right side trowel speed
should be within 3 rpm of the left.
Trowel speed adjustment is a two-step process. First, the
left side should be checked and/or adjusted. Second, the
right side should be adjusted to match the left.
A good starting point in the adjustment process is to adjust
the rod such that both trowels begin to rotate at the same
time when the foot pedal is slowly depressed. This will,
generally, get the speeds fairly close;close enough for use
if instrumentation is unavailable (i.e. on the job site). From
this point on, some form of instrumentation is required to
verify that the trowel speeds are within tolerance. A strobe
or magnetic pickup type speed indicator is recommended
to verify the speeds.
Left Side Trowel Speed adjustment
The left side trowel speed is adjusted by the set bolt
(Figure 28) located under the operator's platform, and is
accessed by opening the storage panel door. Backing
the set screw out decreases the left side trowel speed;
screwing it inward increases the speed.
The trowel speeds should be adjusted on a dry concrete
floor with the blades pitched flat. Units with the Yanmar
turbocharged engine should be set at 140-160 RPM with
the engine at full speed.Blade Pitch
SET
BOLT
Matching Blade Pitch for Both Sets of Blades
Sometimes it may be necessary to match blade pitch
between the two sets of blades. There are some signs
that this may be necessary. For example, the differences
in pitch could cause a noticeable difference in finish quality
between the two sets of blades, or, the difference in blade
Figure 28. Trowel Speed Control
(Set Bolt Location)
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Maintenance
pitch could make the machine difficult to control.
BLADE PITCH
ADJUSTMENT BOLT
This is due to the surface area in contact with the concrete
(the blade set with the greater contact area tends to stick
to the concrete more).
The right rocker switch (Twin Pitch™) pitches both blades
at the same time while the left rocker switch (Single Pitch)
will pitch only the left blade. Moving the switches forward
increases the pitch while moving them backward decreases
the pitch, (Figure 30).
LEVER ARM
SPIDER PLATE
TROWEL ARM
BLADE PITCH
ROCKER SWITCHES
BLADE
Figure 31. Blade Pitch Adjustment Bolt
The easiest and most consistent way to make adjustments
onthetrowelarmfingersistousetheTrowelArmAdjustment
Fixture (P/N 9177).It comes with all the hardware necessary
to properly accomplish this maintenance and instructions
on how to utilize this tool.
Figure 30. Blade Pitch Rocker Switches
If a trowel arm adjustment fixture is not available and
immediate adjustment is necessary, temporary field
adjustment can be made if you can see or feel which blade
is pulling harder by adjusting the bolt that corresponds to
that blade.
Blade pitch adjustment procedure
Maintenance adjustment of blade pitch is made by adjusting
a bolt (Figure 31) on the arm of the trowel blade finger.
This bolt is the contact point of the trowel arm to the lower
wear plate on the thrust collar.The goal of adjustment is to
promote consistent blade pitch and finishing quality.
A better way to determine which blades need adjustment
is to place the machine on a known FLAT surface (steel
metal plate) and pitch the blades as flat as possible. Look
at the adjustment bolts.They should all barely make contact
with the lower wear plate on the spider. If you can see that
one of them is not making contact, some adjustment will
be necessary.
Look for the following indications if blades are wearing
unevenly. If so, adjustment may be necessary.
„ Is one blade is completely worn out while the others
look new?
Adjust the“high”bolts down to the level of the one that is not
touching, or adjust the “low”bolt up to the level of the higher
ones. If possible, adjust the low bolt up to the level of the
rest of the bolts.This is the fastest way, but may not always
work. Verify after adjustment the blades pitch correctly.
„ Does the machine have a perceptible rolling or bouncing
motion when in use?
„ Look at the machine while it is running, do the guard
rings “rock up and down” relative to the ground?
Blades that are incorrectly adjusted often will not be able to
pitch flat. This can occur if the adjusting bolts are raised too
high.Conversely, adjusting bolts that are too low will not allow
the blades to be pitched high enough for finishing operations.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 33
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Maintenance
If, after making Blade Pitch adjustments the machine is
still finishing poorly, blades, trowel arms, and trowel arm
bushings may be suspect and should be looked at for
adjustment, wear, or damage. See the following sections.
Stabilizer Ring Removal
TROWEL
ARM
HEX CAP
SCREW
5. To remove the outer stabilizer ring, (Figure 32), remove
the six bolts at the end of each spider arm.
STABILIZER
WASHER
RING
HEX NUT
Figure 33. Blade Removal
4. Wire brush any build-up of concrete from all six sides
of the trowel arm.This is important to properly seat the
new blade. Repeat for the remaining arms.
HEX CAP
SCREW
ROD END
FLAT
5. Install the new blade, maintaining the proper orientation
for direction of rotation.
WASHER
6. Reinstall the bolts and lock washers.
.
7. Torque to 9 ft. lbs. (12.2 N m)
Figure 32. Stabilizer Ring Removal
8. Repeat steps 2-7 for all remaining blades.
6. Examine stabilizer ring for out of round or bends.If ring
is damaged, replace ring. If ring is found to be correct
with no damage, set aside.
Changing Blades
It is recommended that aLL the blades on the entire
machine are changed at the same time. If only one or
some of the blades are changed, the machine will not
finish concrete consistently and the machine may wobble
or bounce.
1. Place the machine on a flat, level surface. Adjust
the blade pitch control to make the blades as flat as
possible.
2. Note the blade orientation on the trowel arm. This is
important for ride-on trowels as the two sets of blades
counter-rotate. Lift the machine up, placing blocks
under the main guard ring to support it.
3. Remove the bolts and lock washers (Figure 33) that
secure the blade to the trowel arm, then remove the
blade.
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Maintenance
5. Figure 35 illustrates the "correct alignment " for a spider
plate (as shipped from the factory).
TROWeL aRm aDJuSTmeNT
Use the following procedure to check and adjust trowel
arms, and check for worn or damaged components when
it becomes apparent that the trowel is finishing poorly or
in need of routine maintenance.
BLADE
MOUNTING
BAR
TROWEL ARM
Look for the following indications. Trowel arm alignment,
worn spider bushings or bent trowel arms may the cause.
„ Are blades wearing unevenly? Is one blade completely
worn out while the others look new?
Flat
Flat
Surface
„ Does the machine have a perceptible rolling or bouncing
motion when in use?
Correct Alignment
„ Look at the machine while it is running; do the guard
rings “rock up and down” relative to the ground?
Figure 35. Correct Spider Plate Alignment
Spider Removal
1. Place the trowel on a FLAT, LEVEL surface.
2. A level, clean surface area to test the trowel prior to
and after is essential. Any unlevel spots in the floor or
debris under the trowel blades will give an incorrect
perception of adjustment. Ideally, a 5 x 5 ft. (1.5 x 1.5
m) three-quarter inch (19 mm) thick FLAT steel plate
should be used for testing.
Remove the spider assembly (Figure 36) from the hydraulic
motor shaft as follows:
1. Remove the protective plug located on the underside
of the spider to gain access to the screw securing the
spider plate to the hydraulic motor shaft.
3. Pitch the blades as flat as possible. The adjustment
bolts should all barely make contact with the lower
wear plate on the spider. If one is not making contact,
adjustment will be necessary.
4. Figure 34 illustrates, "incorrect alignment", worn
spider bushings or bent trowel arms. Check that
the adjustment bolt is barely touching (0.10" max.
clearance) lower wear plate.All alignment bolts should
be spaced the same distance from the lower wear plate.
Hydraulic Motor
Shaft
Upper Wear Plate
Thrust Collar Bearing
Thrust Collar
Hydraulic
Motor
Thrust Collar Bushing
Lower Wear Plate
Lower Wear Plate
Spider Plate
Adjustment Bolt
Adjustment Bolt
Retainer
Surface
Lock Washer
NO
Retaining Screw
Dished Effect on
Finished Concrete
Plug
Figure 36. Spider/Gearbox Removal
Figure 34. Incorrect Spider Plate Alignment
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Maintenance
2. Remove spider to hydraulic motor retainingscrew.
3. Carefully lift the upper trowel assembly off of the spider
assembly. A slight tap with a rubber mallet may be
necessary to dislodge the spider from the main shaft
of the hydraulic motor.
2-PIECE
BRONZE
BUSHING
HEX HD.SCREW
HEX JAM NUT
SPIDER
RETAINING SCREW
4. For reassembly apply Blue Loctite #242 to the spider
.
retaining screw and torque to 130 ft.-lbs. (176 N m)
PLATE
(GREASE FITTING)
LOCK
WASHER
ARM
ARM
Trowel arm Removal
LEVER
RETURN
SPRING
1. Remove the hardware securing the stabilizer ring to
the trowel arm (Figure 37).
ROLL PIN
TROWEL ARM
Figure 38. Trowel Arm Removal
(Spider Plate)
4. Should the trowel arm inserts (bronze bushing) come
out with the trowel arm, remove the bushing from the
trowel arm and set aside in a safe place. If the bushing
is retained inside the spider plate, carefully remove
the bushing.
NUT
TROWEL
ARM
5. Examine the bronze trowel arm bushings (Figure 39),
and clean if necessary. Replace bushing if out-of-
round or worn.
STABILIZER
RING
NUT
2-PIECE
BRONZE
FLAT
WASHER
ROD END
BUSHINGS
BOLT
Figure 37. Trowel Arm Removal
(Stabilizer Ring)
Figure 39. Bronze Bushings
2. Each trowel arm (Figure 38 )is held in place at the
spider plate by a hex head bolt (zerk grease fitting)
and a roll pin. Remove both the hex head bolt and the
roll pin from the spider plate.
6. Wire brush any build-up of concrete from all six sides
of the trowel arm. Repeat this for the remaining arms.
3. Remove the trowel arm from the spider plate.
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Maintenance
3. Next, check the clearance between the round shaft and
the test surface as one of the flat hex sections of the
arm rests on the test surface. Rotate the arm to each
of the flat hex sections and check the clearance of the
round shaft. Use a feeler gauge of .005" (0.127 mm).
Each section should have the same clearance between
the round of the trowel arm shaft and the test surface.
CheckingTrowel arm Straightness
Trowel arms can be damaged by rough handling, (such
as dropping the trowel on the pad), or by striking exposed
plumbing, forms, or rebar while in operation. A bent trowel
arm will not allow the trowel to operate in a smooth fluid
rotation. If bent trowel arms are suspect, check for flatness
as follows, refer to Figure 40 and Figure 41:
4. If the trowel arm is found to be uneven or bent, replace
the trowel arm.
Lever Mounting Slot
(Left Arm Shown)
Trowel arm adjustment
Roll Pin Hole
Shown in Figure 42 is the adjustment fixture with a trowel
arm inserted.As each trowel arm is locked into the fixture, the
arm bolt is adjusted to where it contacts a stop on the fixture.
This will consistently adjust all of the trowel arms, keeping the
finisher as flat and evenly pitched as possible.
Blade Attachment
Bolt Hole (1 of 3)
Flat of D-Shaft
(Top of Arm)
1. Locate the trowel arm adjustment tool P/N 9177.
ADJUSTMENT
BOLT
Trowel Arm
Round Shaft Section
Trowel Arm
D-Shaft Section
Figure 40. Trowel Arm
LOCKING
NUT
DISTANCE
1. Use a thick steel plate, granite slab or any surface
which is true and flat, to check all six sides of each
trowel arm for flatness.
2. Check each of the six sides of the trowel arm (hex
section). A feeler gauge of .004" (0.10 mm) should not
pass between the flat of the trowel arm and the test
surface along its length on the test surface.(Figure 41) .
FIXTURE
ARM
SIDE-VIEW
Figure 42. Trowel Arm AdjustmentTool SideView
Trowel Arm
Flat Test
Surface
2. Ensurethefixturearmisinthepropersetting(upordown)
for your trowel arm rotation as shown in Figure 43.
Feeler Gauge
(.005 in./0.127mm)
Feeler Gauge
(.004 in./0.10mm)
Figure 43. Trowel Arm Adjustment Setup
Figure 41. Checking Trowel Arm Flatness
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 37
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Maintenance
Re-assembly
NOTICE
1. Cleanandexaminetheupper/lowerwearplatesandthrust
collar.Examinetheentirespiderassembly.Wirebrushany
concreteorrustbuild-up.Ifanyofthespider components
are found to be damaged or out of round, replace them.
Arms with CLOCK-WISE blade rotation use the
fixture arm in the UP position (A in Figure 43). Arms
with COUNTER CLOCK-WISE blade rotation use the
fixture with the fixture arm in the DOWN position. (B
in Figure 43).
2. Make sure that the bronze trowel arm bushing is not
damage or out of round.Clean the bushing if necessary.
If the bronze bushing is damaged or worn, replace it.
3. Unscrew the locking bolts on the adjustment tool and
place the trowel arm into the fixture channel as shown
in Figure 44. A thin shim may be required to cover the
blade holes on the trowel arm. Make sure to align the
trowel adjustment bolt with the fixture adjustment bolt.
3. Reinstall bronze bushing onto trowel arm.
4. Repeat steps 2-3 for each trowel arm.
5. Make sure that the spring tensioner is in the correct
position to exert tension on the trowel arm.
TROWEL
ARM
LEVER
ARM
6. Insert all trowel arms with levers into spider plate (with
bronze bushing already installed) using care to align
grease hole on bronze bushing with grease hole fitting
on spider plate.
FIXTURE
ARM
ADJ.
BOLT
SHIM
7. Lock trowel arms in place by tightening the hex head
bolt with zerk grease fitting and jam nut.
ADJ.
BOLT
8. Re-install the blades onto the trowel arms.
9. Install stabilizer ring onto spider assembly.
LOCKING
BOLTS
10. Lubricate all grease points (zerk fittings) with premium
"Lithum 12" based grease, conforming to NLGI Grade
#2 consistency.
DISTANCE
.010 INCH
TROWEL ARM
ADJUSTMENT
FIXTURE
P/N 1817
Figure 44. Trowel Arm Adjustment Fixture
Components
4. Use an allen wrench to tighten the locking bolts
securing the trowel arm in place.
5. Adjust the bolt "distance" shown in Figure 42 to match
one of the arms. The other arms will be adjusted to
match this distance.
6. Loosen the locking nut on the trowel arm lever, then
turn the trowel arm adjusting bolt until it barely touches
(.010") the fixture adjusting bolt.
7. Once the correct adjustment is made, tighten the lock
nut on the trowel arm to lock in place.
8. Loosen locking nuts on the adjustment fixture, and
remove trowel arm.
9. Repeat steps for the remaining trowel arms.
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Maintenance
3. Attach the blade tie-downs to the far side of the Z-Clip
brackets with tie-down knobs as shown in Figure 45.
Installing pans Onto Finisher Blades
These round discs sometimes referred to as "pans" attach
to the spiders arms and allow early floating on wet concrete
and easy movement from wet to dry areas. They are also
very effective in embedding large aggregates and surface
hardeners.
4. Check to make certain that the blade edges are
secured under the Z-Clips and the tie-downs are
secured completely over the edges of the blade bar
before the machine is put back into operation.
Checking Hydraulic Steering pressure
WaRNINg
Lifting/Crush Hazard. DO NOT lift trowel
with pans attached.
WaRNINg
NeveR use your hand to find hydraulic
leaks. Use a piece of wood or cardboard.
Hydraulic fluid injected into the skin must
be treated by a knowledgable physician
immediately or severe injury or death can
occur.
WaRNINg
aLWayS install pans either on the work area or on an
area that is next to and level with the work area. DO
NOT lift the trowel when the pans are attached.
Many hydraulic problems are a result of low fluid levels.
Before checking any other possibilities, make sure the
hydraulic fluid level is up to the top of the sight glass which
is located at the back/center of the frame.
1. Lift trowel just enough to slide pan under blades.Lower
finisher onto pan with blades assembly adjacent to
Z-Clips.
2. Rotate blades into position under Z-Clips (Figure 45).
Ensure that the blades are rotated in the direction of
travel when the machine is in operation or use the
engine to rotate the blades into position.
Hydrostatic pressure can be checked using a pressure
gauge with a range of at least 5,000 psi. Two male
diagnostic quick couplers/test ports (one for each pump)
are located beneath the right grill guard (Figure 46).
Tie-Down Knob
Tie-Down,
Blade
QUICK DISCONNECT
MALE COUPLERS
Blade Assembly
Z-Clip, Pan
Figure 45. Z-Clip Finisher Pan Installation
Figure 46. QD Male Couplers Location
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Maintenance
To access the right and left hydrostatic pump test ports,
remove the grill guard. It is best to use two gauges
simultaneously, but it is possible to use only one gauge
and repeat the procedure for each side.
With the foot pedal in the idle position and the engine at
full speed, the pressure should be 150 to 250 psi. If the
pressure is less than 150 psi, the charge system may need
to be inspected and/ or serviced. In particular, the suction
filter and charge pump relief valve should be checked.The
suction filter may be plugged, or the relief valve may be
stuck. Either condition may cause low charge pressure.
Connect the pressure gauges to right and left test ports
as shown in Figure 47.
To fully test the hydrostatic system, the spiders will need
to be locked so that they cannot rotate. This can be done
by wrapping a chain around an arm on each spider, thus
chaining them together in the back of the trowel.
With the engine at 50% to 70% of full speed, and spiders
chained together, slowly depress the foot pedal and read
the gauges. The pressure should get to at least 3,625 psi
(250 bar). If the pressure will not attain 3,625 psi (250
bar), the pump should be inspected and/or serviced by an
authorized service representative.
Once the pressure gauges are installed and the spiders
chained together, the system can be checked.
PRESSURE GAUGE
(5,000 PSI)
PRESSURE GAUGE
(5,000 PSI)
150
100
50
200
250
300
bar
psi
5000
WIKA
150
100
50
200
250
300
RIGHT-SIDE
HYDROSTATIC
PUMP TEST PORT
bar
psi
5000
WIKA
QUICK DISCONNECT
DIAGNOSTIC FEMALE
COUPLER
LEFT-SIDE
HYDROSTATIC
PUMP TEST PORT
Figure 47. Hydraulic Pump Pressure Test Ports
page 40 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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Maintenance
Checking Steering Pressure
Steering pressure adjustment
Steering pressure is also checked at either one of the
pressure diagnostic couplers (Figure 48) under the right
grill guard. Check steering pressure at either coupler with
a 300-600 PSI gauge.
Remember, DO NOT depress the foot pedal with the 300-
600 PSI gauge installed. Immediate damage to the gauge
will occur.
1. Remove right grill guard.
WaRNINg
2. Install 300 or 600 PSI gauge (Figure 49).
3. Loosen 1-1/16" jam nut on charge relief valve.
DO NOT depress the FOOT PEDAL with the 300-600
PSI gauge installed or the gauge will be ruined.
PRESSURE GAUGE
(300-600 PSI)
HEX JAM NUT
20
15
25
30
10
5
35
bar
psi
WIKA
RIGHT-SIDE
HYDROSTATIC
PUMP TEST PORT
HEX NUT
LEFT-SIDE
HYDROSTATIC
PUMP TEST PORT
Figure 49. Steering Pressure Adjustmen
4. Use a 1/2" socket to adjust the small hex nut within the
larger hex jam nut.
Figure 48. Steering Pressure Gauge
5. Adjust to proper steering pressure specifications shown
in Table 9.
Run the engine at full RPM. The steering system's factory
settings are shown in Table 9, however some operators
may prefer a more responsive steering (higher pressure
required) and some operators may prefer a "softer feel"
(lower pressure required).
6. Retighten jam nut, remove gauge, and reinstall grill
guard.
Table 9. Steering pressure
Cool Oil1
Hot Oil 1
1. Engine must be a full speed.
155-175 PSI
145-165 PSI
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 41
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Maintenance
2. Press the left pitch rocker switch downward.
pitch pressure Check
To gain access to the pitch block (Figure 50), removal of
the right-rear seat frame panel may be necessary.
RIGHT ROCKER
SWITCH
UP
Pitch pressure must be measured with at least one of
the pitch switches activated. When pitch switches are
unactivated, the pitch pressure will be the same as the
charge/steering pressure. Proper pitch pressure is 2300
PSI (2250 - 2350 PSI).
LEFT ROCKER
SWITCH
DOWN
Figure 52. Pitch Pressure
(Left Pitch Rocker Switch)
3. The blades should fatten out (bottom out the pitch
cylinders).
PITCH PRESSURE
PITCH BLOCK
TEST PORT
4. Continue to hold down the left pitch rocker switch and
record pressure.
pitch pressure Out of Specification
NOTICE
The Pitch Pressure Relief Valve is SET AT THE
FACTORY, and normally should not require adjustment.
If all other systems are found not to be defective, then
the pitch relief valve is suspect, the following steps can
be used to adjust the valve.
Figure 50. Pitch Block Location
If the pitch pressure check is not within specification, check
for the following:
1. Install 3000 PSI range pressure gauge to pitch
pressure test port on pitch block, (Figure 51).
„ Correct hydraulic fluid level.
„ Plugged hydraulic oil filter
PRESSURE GAUGE
(3000 PSI)
„ Loose or leaking fittings.
„ Ruptured/damaged hydraulic lines.
„ Faulty hydraulic pump.
150
100
50
200
250
300
bar
psi
5000
WIKA
PITCH
BLOCK
„ Pitch Pressure Relief Valve no longer at factory setting.
PITCH
PRESSURE
TEST PORT
Figure 51. Pitch Pressure Test Port
page 42 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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Maintenance
pitch pressure adjustment
NOTICE
NeveR allow the pitch pressure to exceed 2700 PSI
or equipment damage may result.
NOTICE
DO NOT attempt to adjust the Pitch Pressure Relief
Valve while the engine is running.
1. Remove right grill guard and right rear seat frame
panel.
2. With the engine OFF, remove the end cover (Figure 53)
on relief valve.
RELIEF
VALVE
RELIEF VALVE
ADJUSTMENT
POINT
END
COVER
PITCH
BLOCK
Figure 53. Pitch Pressure Adjustment
3. Adjust the relief valve with an allen wrench and reinstall
the end cover.
4. Start the engine and check the pressure as described
earlier. (See Pitch Pressure Check)
5. If pressure requires further adjustment, shut the engine
down and repeat steps 2 through 4 until pressure check
reads 2300 PSI.
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 43
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WirinG DiaGraM
L A N I M R E T E L D D I M H C T I
W S
H C T I P T F E L
L A N I M R E T E L D D I M H C T I
W S
H C T I
P
N I
W T
R E T A E H M U N E L P E R E E D N H O J
R E D N E S E R U S S E R P L I G N E E R E E D N H O J
O
9 2
8 2
W
W
D I O N E L O S F F O T U H S L E U F
D I O N E L O S F F O T U H S L E U F
D I O N E L O S F F O T U H S L E U F
7 2
1 4
W
W
Y T I R A L O P O N - - H C T I
W S
S S A P Y B T A E S
1 2
3
W
W
W
W
W
H C T I
H C T I
S " H C T I
S " H C T I
S " H C T I
S " H C T I
W
S
Y A R P S T F E L
Y A R P S T F E L
W S
6 1
5 1
4 1
H C T I
H C T I
W
P
S S E L " T H G I
E R O M " T H G I
R
R
S E H C T I
W S
H C T I
P
D N A
W
P
L O R T N O C Y A R P S T F E L
H C T I
H C T I
W
P
E R O M " T F E L
S S E L " T F E L
W
P
3 1
W
0 3
3 2
W
D U T S E V I T A G E N
D U T S E V I T I S O P
D U T S E V I T A G E N
D U T S E V I T A G E N
D U T S E V I T A G E N
W
0 2
3 3
5 3
W
W
W
5 2
4 2
W
W
Y A L E R Y R O S S E C C A
3 2
5 4
W
W
0 2
W
H C T I
W S
Y A R P S T H G I
R
2 2
2
W
W
8 2
W
C A O T T C E N N O C
C A O T T C E N N O C
7 1 O T T C E N N O C
9 1 O T T C E N N O C
0 3 O T T C E N N O C
0 3 O T T C E N N O C
C A O T T C E N N O C
0 5 O T T C E N N O C
0 5 O T T C E N N O C
7 2
6 2
8 1
W
W
W
4 2
9
W
W
W
W
5 2
9 2
7 4
W
2 2
1 2
4 4
W
W
W
)
Y T I R A L O P O N ( S E R I W R E T E M R U O H
)
E R I W E T I H W (
L A N I M R E T M O T T O B H C T I
L A N I M R E T P O T H C T I
W
S T H G I
L
L
3 3
4 3
W
W
)
E R I W E T I H W (
W S T H G I
P O T H C T I
W S T H G I
L
4 3
5 3
W
W
S S E N R A H T H G I
L
O T T C E N N O C
3 4
1 4
W
W
E V L A V S S A P Y B C I L U A R D Y H
9 3
0 4
W
W
E V L A V S S A P Y B C I L U A R D Y H
8 1
9 1
W
W
7 4
0 1
W
W
2 4
W
D N U O R G A G 6 1 K C A L B
D N U O R G A G 6 1 K C A L B
D N U O R G A G 6 1 K C A L B
D N U O R G A G 6 1 K C A L B
D N U O R G A G 6 1 K C A L B
D I O N E L O S R E T R E V I
D
R
7 1
6 1
5 1
4 1
W
D I O N E L O S " H C T I
P
S S E L " T H G I
W
D I O N E L O S " H C T I
P
E R O M " T H G I
R
W
W
D I O N E L O S " H C T I
P
E R O M " T F E L
D I O N E L O S " H C T I
P
S S E L " T F E L
3 1
W
2 1
1 1
W
W
1
W
0 1
W
D I O N E L O S R E T R A T S
9
W
T S O P Y R E T T A B R E T R A T S
T S O P Y R E T T A B R E T R A T S
5
W
6 3
W
8
W
W
7
H C T I
W S
P M E T T N A L O O C E N I G N E
6
W
5
W
T S O P T U P T U O R O T A N R E T L A
4
W
)
Y L N O A T O B U K N O D E S U E R I
W (
R O S N E S E R U S S E R P L I O E N I G N E
page 44 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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HYDraulic DiaGraM
PO
#10 SAE
4
5
2050 PSI
1
S1
1
C1
#6 SAE
COOLER
.020 Ø
3
1
2
P4
4
2
#20 SAE
3
#10 SAE
2
PI
#10 SAE
2
6
2
1
1
P2
G
#4 SAE
C2
#6 SAE
S2
S3
#10 SAE
TANK
#10 SAE
1
2
C3
#6 SAE
.020 Ø
P1
1
2
5 PSI
1
S
#6 SAE
4
2
3
#10 SAE
2
6
1
SP
#6 SAE
C4
#6 SAE
P3
#10 SAE
M1
M2
S4
#10 SAE
#10 SAE
2
2
T1 T2
#10 SAE #8 SAE
T3
#6 SAE
T
#12 SAE
#10 SAE
#10 SAE
TBD
P
P
T
T
44-60
7
8
19.8
19.8
9.9
1
GPM
HP
1
2
3
1
4
2
GPM
GPM
9
9
9
10
COMPONENT DESCRIPTIONS
DESCRIPTION
QTY
ITEM#
1
2
3
4
5
PUMP/A, SAUER-DANFOSS M-25
MOTOR, HYD SAUER OMTW315
VALVE/A, PUMP SAFETY BYPASS
1
2
1
COOLER, THERM TRANSFER MF-15
VALVE/A, PITCH BLOCK
1
1
6
7
CYLINDER, PITCH
2
1
1
3
1
VALVE/A, HYDRO-CONTROL DUAL AXIS
VALVE/A, HYDRO-CONTROL SNG AXIS
CYLINDER, STEERING
8
9
10
SUCTION FILTER, 10 MICRON ABS
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 45
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trOuBleSHOOtinG
Troubleshooting (Ride-On Hydraulic Trowel)
Symptom
possible problem
Solution
Other problems?
Consult engine manufacturer’s manual.
Check wiring. Replace as necessary.
Replace seat cushion (contains the switch).
Safety stop switch not functioning.
Loose wire connections?
Bad contacts?
Make certain blades are in good condition, not
excessively worn. Finish blades should measure no
less than 2"" (50mm) from the blade bar to the trailing
edge, combo blades should measure no less that 3.5""
(89mm). Trailing edge of blade should be straight and
parallel to the blade bar.
Blades?
Check that all blades are set at the same pitch angle
as measured at the spider. A field adjustment tool is
available for height adjustment of the trowel arms (see
Optional Equipment)..
Spider?
Check the spider assembly for bent trowel arms. If one
of the arms is even slightly bent, replace it immediately.
Bent trowel arms?
Check the trowel arm bushings for tightness. This can
be done by moving the trowel arms up and down. If
there is more than 1/8"" (3.2 mm) of travel at the tip of
the arm, the bushings should be replaced. All bushings
should be replaced at the same time.
If trowel “bounces, rolls concrete, or makes uneven
swirls in concrete”..
Trowel arm bushings?
Thrust collar?
Check the flatness of the thrust collar by rotating it on
the spider. If it varies by more than 0.02"" (0.5 mm)
replace the thrust collar.
Check the thrust collar by rocking it on the spider. If it
can tilt more than 1/16"" (1.6 mm) [as measured at the
thrust collar O.D.], replace the bushing in the thrust
collar.
Thrust collar bushing?
Thrust bearing worn?
Check the thrust bearing to see that it is spinning freely.
Replace if necessary.
Check blades for consistent pitch. Adjust per
Maintenance Section instructions if necessary.
Blade pitch?
Spider Finger Screws?
Yoke?
Adjust per procedure in Maintenance Section.
Check to make sure that both fingers of the yoke press
evenly on the wear cap. Replace yoke as necessary.
Machine has a perceptible rolling motion while
running.
Check to ensure that each blade is adjusted to have the
same pitch as all other blades. Adjust per maintenance
section in manual.
Blade Pitch?
page 46 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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trOuBleSHOOtinG
Troubleshooting (Ride-On Hydraulic Trowel) - continued
possible problem
Symptom
Solution
Check all electrical connections, including the master on/
off switch and check to see if wiring is in good condition
with no shorts. Replace as necessary.
Wiring?
Lights (optional) not working.
Check to see if light bulbs are still good. Replace if
broken.
Lights?
Retardant?
Check retardant level in tank. Fill tank as required.
Check all electrical connections, including master on/off
switch connections. Replace components and wiring as
necessary.
Wiring?
Check the continuity of master on/off switch. Replace if
broken.
Retardant spray (optional) not working.
Bad switch?
If pump has a voltage present when the switch is turned
on, but does not operate and electrical connections to
the pump are good, replace the pump..
Bad spray pump?
Bad fuse?
Check fuse. Replace fuse if defective.
See section on blade speed adjustment.
Blade speed out of adjustment?
Check for wear of steering bearings and linkage
components replace if necessary.
Worn components?
Pivots?
Check to ensure free movement of hydraulic drive
motors.
Steering is unresponsive.
Check to ensure that hydraulic steering pressure is
adequate. See section on checking hydraulic steering
pressure.
Hydraulic pressure?
Operating position is uncomfortable.
Pitch system not working.
Seat adjusted for operator?
Wiring?
Adjust seat with lever located on the front of the seat.
Check and repair wiring and connectors as necessary.
Replace solenoid valve.
Spool stuck in solenoid valve?
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 47
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trOuBleSHOOtinG
Troubleshooting (engine)
possible problem
Symptom
Solution
Add fuel. Check entire fuel system.
Replace fuel pump.
No Fuel reaching injection pump?
Defective fuel pump?
Fuel filter clogged?
Replace fuel filter and clean tank.
Replace or repair fuel line.
Faulty fuel supply line?
Check piston, cylinder and valves. Adjust or
repair per engine repair manual.
Compression too low?
Engine will not start or start is delayed,
although engine can be turned over.
Fuel pump not working correctly?
Oil pressure too low?
Repair or replace fuel pump.
Check engine oil pressure.
Comply with cold starting instructions and
proper oil viscosity.
Low starting temperature limit exceeded?
Defective battery?
Charge or replace battery.
Check carefully for loosened fuel line
coupling, loose cap nut, etc.
Air or water mixed in fuel system?
Refill engine crankcase with correct type of
oil for winter environment.
Engine oil too thick?
At low temperatures engine will not start.
Defective battery?
Fuel filter blocked?
Fuel supply blocked?
Defective fuel pump?
Fuel tank empty?
Replace battery.
Replace fuel filter.
Check the entire fuel system.
Replace fuel pump.
Add fuel.
Engine fires but stops soon as starter is
switched off.
Fuel filter blocked?
Defective fuel pump?
Replace fuel filter.
Replace fuel pump.
Engine stops by itself during normal
operation.
Mechanical oil pressure shutdown sensor
stops the engine due to low oil?
Add oil. Replace low oil shutdown sensor if
necessary.
Fuel tank empty?
Replace fuel filter.
Fuel filter clogged?
Replace fuel filter.
Fuel tank venting is inadequate?
Ensure that tank is adequately vented.
Check threaded pipe unions tape and tighten
unions a required.
Leaks at pipe unions?
Low engine power, output and speed.
Speed control lever does not remain in
selected position?
See engine manual for corrective action.
Engine oil level too full?
Correct engine oil level.
Use No. 2-D diesel fuel only. Check the fuel
injection pump element and delivery valve
assembly and replace as necessary.
Injection pump wear?
page 48 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
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trOuBleSHOOtinG
Troubleshooting (engine) - continued
possible problem
Symptom
Solution
Clean or replace air filter.
Air filter blocked?
Low engine power output and low speed,
black exhaust smoke.
Incorrect valve clearances?
Malfunction at injector?
Adjust valves per engine specification.
See engine manual.
Drain off engine oil down to uppermark on
dipstick.
Too much oil in engine crankcase?
Entire cooling air system contaminated/
blocked?
Clean cooling air system and cooling fin
areas.
Fan belt broken or elongated?
Coolant insufficient?
Change belt or adjust belt tension.
Replenish coolant.
Engine overheats.
Radiator net or radiator fin clogged with dust? Clean net or fin carefully.
Fan, radiator, or radiator cap defective?
Thermostat defective?
Replace defective part.
Check thermostat and replace if necessary.
Replace parts.
Head gasket defective or water leakage?
eHTx44y5 RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13) — page 49
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OperatiOn Manual
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
United StateS
Multiquip Corporate Office
MQ Parts Department
18910 Wilmington Ave.
Carson, CA 90746
Contact: [email protected]
Tel. (800) 421-1244
Fax (310) 537-3927
800-427-1244
310-537-3700
Fax: 800-672-7877
Fax: 310-637-3284
Service Department
Warranty Department
800-421-1244
310-537-3700
Fax: 310-537-4259
Fax: 310-943-2238
800-421-1244
310-537-3700
Fax: 310-943-2249
Technical Assistance
800-478-1244
mexico
United Kingdom
MQ Cipsa
Multiquip (UK) Limited Head Office
Carr. Fed. Mexico-Puebla KM 126.5
Momoxpan, Cholula, Puebla 72760 Mexico
Contact: [email protected]
Tel: (52) 222-225-9900
Unit 2, Northpoint Industrial Estate, Tel: 0161 339 2223
Fax: (52) 222-285-0420 Globe Lane,
Dukinfield, Cheshire SK16 4UJ
Contact: [email protected]
Fax: 0161 339 3226
Canada
Multiquip
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
Contact: [email protected]
Tel: (450) 625-2244
Tel: (877) 963-4411
Fax: (450) 625-8664
© COPYRIGHT 2013, MULTIQUIP INC.
Multiquip Inc, the MQ logo and the Whiteman logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other
trademarks are the property of their respective owners and used with permission.
This manual MUsT accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published
in this publication at any time without notice and without incurring any obligations.
Your Local Dealer is:
pn: 32080
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