OperatiOn Manual
SerieS
MODelS
jwn24htcSl
jwn24hScSl
riDe-On pOwer trOwelS
(hOnDa GX690rtaF GaSOline enGine)
StartinG S/n VB0206952
Revision #1 (05/12/12)
To find the latest revision of this
publication, visit our website at:
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
pn: 23624
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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.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 3
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taBle OF cOntentS
jwn24 Series ride-On
power trowel
Proposition 65 Warning ........................................... 2
Silicosis/Respiratory Warnings................................ 3
Table Of Contents.................................................... 4
Training Checklist .................................................... 5
Daily Pre-Operation Checklist ................................. 6
Safety Information .............................................. 7-12
Specifications/Dimensions (Trowel)....................... 13
Specifications/Dimensions (Engine)...................... 14
General Information............................................... 15
Components ..................................................... 16-17
Basic Engine.......................................................... 18
Set-Up ................................................................... 19
Inspection .............................................................. 20
Operation.......................................................... 21-22
Maintenance..................................................... 23-35
Wiring Diagram................................................. 36-37
Wiring Diagram Component Locator ..................... 38
Troubleshooting ................................................ 39-42
NOTICE
Specifications are subject to change without notice.
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traininG checkliSt
Training Checklist
No,
Description
OK?
Date
Read operation manual
completely.
1
Machine layout, location of
components, checking of engine
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.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 5
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Daily pre-OperatiOn checkliSt
Daily pre-Operation Checklist
1
Engine oil level
Condition of blades
2
3
4
5
Blade pitch operation
Safety stop switch operation
Steering control operation
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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
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 7
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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.
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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 knowledgable
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 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.
„ 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.
CauTION
„ NeveR touch the hot exhaust manifold,
muffler or cylinder.Allow these parts to cool
before servicing equipment.
NOTICE
CauTION
„ 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.
„ NeveR allow passengers or riders on the trowel during
operation.
„ 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.
„ NeveR lubricate components or attempt service on a
running machine.
„ NeveR place your feet or hands inside the guard rings
while starting or operating this equipment.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 9
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SaFety inFOrMatiOn
FueL SaFeTy
WaRNINg
„ 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.
DaNgeR
„ 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.
„ 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.
„ 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.
CauTION
BaTTeRy SaFeTy
„ aLWayS disconnect the NegaTIve battery terminal
before performing service on the equipment.
DaNgeR
„ DO NOT drop the battery. There is a possibility that the
battery will explode.
„ aLWayS keep battery cables in good working condition.
Repair or replace all worn cables.
„ 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.
TRaNSpORTINg SaFeTy
CauTION
„ NeveR allow any person or animal to
stand underneath the equipment while
lifting.
„ 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.
page 10 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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SaFety inFOrMatiOn
sure the trailer that supports the trowel and the towing
vehicle are mechanically sound and in good operating
condition.
NOTICE
„ 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.
„ aLWayS shutdown engine before transporting
„ 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 or 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. Trailer tires should 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 rope.
TOWINg SaFeTy
„ Avoid sharp turns to prevent rolling.
CauTION
„ Check with your local county or state safety
towing regulations, in addition to meeting
Department of Transportation (DOT)
SafetyTowing Regulations, before towing
your trowel.
„ In order to reduce the possibility of an accident while
transporting the trowel on public roads, aLWayS make
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 11
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SaFety inFOrMatiOn
„ Trailer should be adjusted to a level position at all times
when towing.
emISSIONS INFORmaTION
NOTICE
„ Raise and lock trailer wheel stand in up position when
towing.
The gasoline engine used in this equipment has been
designed to reduce harmful levels of carbon monoxide
(CO), hydrocarbons (HC) and nitrogen oxides (NOx)
contained in gasoline exhaust emissions.
„ Place chock blocks underneath wheel to prevent rolling
while parked.
„ Place support blocks underneath the trailer’s bumper to
prevent tipping while parked.
This engine has been certified to meet US EPA Evaporative
emissions requirements in the installed configuration.
„ Use the trailer’s swivel jack to adjust the trailer height to
a level position while parked.
Attempting to modify or make adjustments to the engine
emmission system by unauthorized personnel without
proper training could damage the equipment or create an
unsafe condition.
eNvIRONmeNTaL SaFeTy
NOTICE
Additionally, modifying the fuel system may adversely affect
evaporative emissions, resulting in fines or other penalties.
„ Dispose of hazardous waste properly.
Examples of potentially hazardous waste
are used motor oil, fuel and fuel filters.
emission Control Label
The emission control label is an integral part of the emission
system and is strictly controlled by regulation(s).
„ DO NOT use food or plastic containers to dispose of
hazardous waste.
The label must remain with the engine for its entire life.
„ DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source.
If a replacement emission label is needed, please contact
your authorized Honda Engine Distributor.
page 12 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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SpeciFicatiOnS/DiMenSiOnS
C
A
B
Figure 1. Dimensions
Table 1. Trowel Specifications
A–Length – in. (cm)
B–Width – in. (cm)
77.0 (195.6)
39 (99)
C–Height – in. (cm)1
46.75 (118.7)
685 (311.3)
Weight – lbs. (kgs.) Operating
Weight – lbs. (kgs.) Shipping
Engine – H.P.
885 (402.27)
24 (HONDA)
Fuel Tank – gallons (liters)
Rotor – RPM (Dry Concrete)
Path Width – in. (cm)
5 (19.23)
180 Min
75 (191)
Engine Oil Capacity (w/new filter)
Gear Box Oil Capacity
2 Quarts (1.9 Liters)
69 oz. Mobil SCH 634 Iso VG640
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 13
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SpeciFicatiOnS/DiMenSiOnS
Table 2. Noise and vibration emissions for model JWN24HTCSL
Guaranteed ISO 11201:2010 Based
Sound Pressure Level at Operator Station in dB(A)
92
Guaranteed ISO 3744:2010 Based
Sound Power Level in dB(A)
112
0.15
Whole Body Vibration Per ISO 2631-1:1997 +A1:2010
in m/s2 ∑A(8)
NOTeS:
1. Sound Pressure and Power Levels are “A” weighted Measures per ISO 226:2003 (ANSI S1.4-1981). 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/Dimensions
model
Honda gX690RTaF engine
4 Stroke, Overhead Valve, 90 degree
V-Twin 2 cylinder gasoline engine.
Type
Piston Displacement
Max. Output
40.9 cu.in. (670 cc)
22.1 bhp/3,600 rpm (16.5 KW)
35.6 lbf-ft at 2,500 rpm
Forced Air
Max. Torque
Cooling System
1.6 qt. (1.50 liters)
1.8 qt. (1.7 liters w/oil filter replacement)
Engine Oil Capacity
Fuel
Unleaded gasoline
Octane rating of 86 or higher.
Maximum 10% ethanol.
See engine manual for further details.
Fuel Consumption
Starting System
Spark Plug Type
Spark Plug Gap
Length
1.71 gph
Electric Start/CDI Type Magneto Ignition
ZFR5F NGK
0.028-0.031 in. (0.70 - 0.80 mm)
16.9 in. (42.9 cm)
Height
17.2 in. (43.8 cm)
Width
17.7 in. (45.0 cm)
Weight (dry)
99.9 lbs (45.3 kg)
page 14 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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General inFOrMatiOn
Figure 2 and Figure 3 show the location and functions of the
controls, indicators and general maintenance parts. Each
control may perform more than one function.
JWN SeRIeS RIDe-ON pOWeR TROWeL
FamILIaRIzaTION
The JWN Series Ride-On PowerTrowel is designed for the
floating and finishing of concrete slabs.
geaRBOXeS
The JWN Series Ride-On PowerTrowel uses two separate
gearbox assemblies that are enclosed in rugged cast
aluminum gear cases.
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. Check
that there is always oil in the engine, and gear oil in the
gearbox assembly.
The gearbox casing has a large oil capacity allowing
optimum lubrication to critical points.
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.
STeeRINg aSSIST
Dual control levers located in front of the operator's seat
are provided for steering the trowel.The control levers are
linked to two spring loaded cylinders.
Look at the operator control levers. Grab the control levers
and move them around a bit.Notice how moving the control
levers causes the gearboxes and frame to move.
Push the left control lever forward and pull the right control
lever backward and the trowel will rotate clockwise on
approximately a center axis. Pull the left control lever
backward and push the right control lever forward and
the trowel will rotate counterclockwise. See Table 4 for
a complete description on the control levers directional
positioning.
Notice the foot pedal which controls the engine speed.Also
take a look at the main drive line of the trowel. Take note
and reference how the belts look, this is the way the belts
should look when adjusted properly.
CONSTaNT veLOCITy JOINTS (Cv-JOINTS)
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.
Constant velocity joints insure the efficient transfer of power
to the drive shaft and maintain the timing of the gearboxes
without any chance of slippage.
TRaININg
eNgINe
For training, please use the “"Training Checklist"” located
in the front of this manual. This checklist is not intended
to be a substitute for proper training but will provide an
outline for an experienced operator to provide training to
a new operator.
This trowel is equipped with an air cooled 24 HP Honda
gasoline 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 your nearest Multiquip Dealer for a
replacement should the original manual disappear.
BLaDeS
The blades of the trowel finish the concrete as they are
swirled around the surface. Blades are classified as
combination (10 or 8 inches wide) and finish (6 inches
wide). This trowel is equipped with four blades per rotor
equally spaced in a radial pattern and attached to a vertical
rotating shaft by means of a spider assembly.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 15
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cOMpOnentS
1. Seat — Engine will not start unless operator is seated.
DaNgeR
2. Steering Control Levers — Directs the unit forward,
reverse, left, or right.
Add fuel to the tank only when the engine
is stopped and has had an opportunity to
cool down. In the event of a fuel spill, DO
NOT attempt to start the engine until the
fuel residue has been completely wiped up
and the area surrounding the engine is dry.
3. Retardant Spray Control Button — Sprays retardant
through the nozzle at the front of the machine.
4. Twin pitch Control — Both pitch towers are linked
together. One crank may be turned to adjust the blade
pitch simultaneously or individually controlled for each
set of blades. Turn the crank as marked on its top
surface to increase or decrease blade pitch.
10. Fuel Tank — Holds 5 gallons of unleaded gasoline.
11. Left Foot Riser — Operator foot rest pedal.
12. Spray Nozzle — Spray nozzle for retardant.
5. Light Switch — Turns on three halogen lights. Two
in front, one in rear.
13. Right 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.
6. Ignition Switch — With key inserted, turn clockwise
to start engine.
7. Hourmeter—Indicatesnumberofhourstheenginehasrun.
14. ez- mover Boss — Front attachment point for EZ
Mover. Used to move the trowel.
8. Choke Control Lever — In cold weather pull this
lever to start engine. After engine warms push knob
all the way in.
15. Right Front Light — 12 volt halogen lights, used for
night operations.
9. Fuel gauge/Filler Cap — Indicates the amount of fuel
in the fuel tank. Remove this cap to add fuel.
16. Left Front Light — 12 volt halogen lights, used for
night operations.
1
3
2
4
2
4
8
6
7
9
10
13 12
11
15
16
14
14
Figure 2. Components – Front
page 16 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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cOMpOnentS
17. Rear Light —The JWN-Series Ride-On PowerTrowel
has three 12 volt halogen lights.
23. Left-Side Spider — Consists of trowel arms, blades,
wear plate, and thrust collar.
18. Lift Loops — Located on both sides of the main frame.
Used to lift the trowel.
24. Document Box — Contains all product documentation.
25. Battery — Provides +12V DC power to the electrical
system.
19. Retardant SprayTank — Holds 5 gallons of retardant.
20. Retardant Spray pump — Delivers retardant to the
spray nozzle.
26. Belt guard — Encloses drive belt used in conjunction
with clutch.
21. ez-mover Boss — Rear attachment point for EZ
Mover. Used to transport the trowel.
27. Charcoal Canister — Charcoal activated system
that absorbs or traps fuel vapors. Basic component of
evaporative emissions control systems
22. Right-Side Spider — Consists of trowel arms, blades,
wear plate, and thrust collar.
28. Safety Kill Switch — Shuts down engine when seat
is not occupied by operator.
17
28
18
18
24
25
26
27
20
25
RETARDANT ONLY
21
21
22
23
19
Figure 3. Components – Rear
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BaSic enGine
1
2
9
14
8
13
7
4
5
3
12
6
10
11
Figure 4. Engine Components
7. Throttle Lever — Controlled by accelerator pedal,
increases or decreases engine RPM.
INITIaL SeRvICINg
The engine (Figure 4) must be checked for proper
lubrication and filled with fuel prior to operation.Refer to the
manufacturer's engine manual for instructions and details
of operation and servicing.
8. Oil Filler Cap — Remove to add engine oil.
9. Oil Dip Stick — Remove to check amount and
condition of oil in crankcase.
1. muffler — Used to reduce noise and emissions.
10. Starter — Starts engine when ignition key is rotated
to the "ON" position.
WaRNINg
11. Oil Drain plug — Remove to drain crankcase oil.
Engine components can generate extreme
heat. To prevent burns, DO NOT touch
these areas while the engine is running or
immediatelyafteroperating.NeveRoperate
the engine with the muffler removed.
12. Spark plug — Provides spark to the ignition system.
Set spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch)
Clean spark plug once a week.
13. Fuel Tank — Five gallon capacity; use unleaded
gasoline.
2. air Cleaner — Prevents dirt and other debris from
entering the fuel system.Unsnap air filter cover to gain
access to filter element.
14. Fuel Filler Cap — Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tightened
securely. DO NOT overfill.
3. Choke Knob — Used in the starting of a cold engine
or in cold weather conditions. The choke enriches the
fuel mixture.
DaNgeR
Add fuel to the tank only when the engine
is stopped and has had an opportunity to
cool down. In the event of a fuel spill, DO
NOT attempt to start the engine until the fuel
residue has been completely wiped up and
the area surrounding the engine is dry.
4. engine ON/OFF Switch — "ON" position permits
engine starting, "OFF" position stops engine operations.
5. Fuel Filter — Filters fuel for contaminants.
6. Oil Filter — Spin-on type, filters oil for contaminants.
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Set-up
The purpose of this section is to assist the user in setting
up a NeW trowel.If your trowel is already assembled, (seat,
handles, knobs and battery), this section can be skipped.
SeaT aSSemBLy
The seat is not installed on the trowel for shipping purposes.
To attach the seat perform the following:
NOTICE
1. Remove the seat from the protective wrapping.
The new trowel cannot be placed into service until the
setup installation instructions are completed.
2. Insert studs on bottom of seat through holes in the
mounting plate.
3. Install and tighten the provided nuts.
Before packaging and shipping, this JWN SERIES Ride-On
Power Trowel was run and tested at the factory. If there are
problems, please let us know.
BaTTeRy SeTup
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.
CONTROL HaNDLe aSSemBLy
The steering control handles are not attached to the
trowel's two lower handles at the time of shipment. To
attach the steering control handles to the two lower handle
assemblies, perform the following:
CauTION
Use all safety precautions specified by the battery
manufacturer when working with the battery. Reference
thesafetysectionofthismanualforadditionalinformation.
1. Remove the bolts from the plastic bag tied to the
control towers.
2. Remove all protective wrapping and straps from the
control handles.
To install the battery on the trowel, make sure that the battery
is well seated in the battery box. 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.
3. Slip the top (loose) piece into the base of the
corresponding handle, making sure to line up the holes.
4. Install the bolt through the lined up holes and tighten
the acorn nut onto the threaded end.
NOTICE
Some models are equipped with adjustable height
handles. Adjust the height by placing the bolt
through the set of holes that corresponds to the most
comfortable height.
5. Pay close attention to any wires that may be inside
the control handles. DO NOT pinch or cut any wires
during installation.
6. Inside the plastic bag of parts are two knobs for the
pitch control tower cranks.Install these two knobs onto
the tower crank levers.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 19
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inSpectiOn
Thefollowingsectionisintendedasabasicguidetotheride-on
troweloperation, andisnottobeconsideredacompleteguide
to concrete finishing.It is strongly suggested that all operators
(experiencedandnovice)read“SlabsonGrade”publishedby
the American Concrete Institute, Detroit Michigan.
geaRBOX OIL LeveL
1. Check the gearbox oil level in both gearboxes by
removing the level plug and ensuring that the oil is at
the correct level. See Figure 6.
2. Fill the gear box just to the level of the fill plug. (Figure
6) with Mobil ISO VG 640 SCH 634 oil if necessary..
DO NOT use your ride-on power trowel until this section is
thoroughly understood.
NOTICE
CauTION
Gearbox oil capacity is approximately 69 oz when
empty.
Failure to understand the operation of the trowel could
resultinseveredamagetothemachineorpersonalinjury.
DRAIN
PLUG
GEARBOX
VENT
eNgINe OIL LeveL
FILL/LEVEL
CHECK PLUG
aLWayS check engine oil before each use.
1. Pulltheengineoildipstick(Item2,Figure5)fromitsholder.
2. Determine if engine oil is low.
Figure 7. Gearbox Oil Plugs/Sight Glass
FueL
Determine if the engine fuel is low (Figure 8). If fuel level is
low, remove the fuel filler cap and fill with unleaded gasoline.
Figure 5. Engine Oil Dipstick
DaNgeR
NOTICE
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. DO NOT attempt to start the engine until the
fuel residue has been completely wiped up and the
area surrounding the engine is dry.
To prevent extensive engine wear or damage, always
maintain the proper oil level in the crankcase. Never
operate the engine with the oil level outside of marks
on dipstick, (Items 3 and 4 in Figure 5.)
3. If engine oil is low, remove oil filler cap (Item 1, Figure 5),
and add correct amount of engine oil to bring oil level to
a normal safe level. Use oil as recommended in Figure 6
AMBIENT TEMPERATURE
Figure 8. Fuel Gauge
Figure 6. RecommendedViscosity Grades
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OperatiOn
ImpORTaNT INFORmaTION BeFOReyOu STaRT
1. This ride-on trowel is equipped with a safety stop
switch. This switch is located beneath the seat
assembly. Remember the engine will not start unless
an operator is sitting in the operator’s seat.The weight
of an operator depresses an electrical switch which
will allow the engine to start.
CHOKE
KNOB
CLOSED
WaRNINg
OPEN
NeveR disable or disconnect the safety stop switch. It is
provided for the operator's safety and injury or death may
resultifitisdisabled,disconnectedorimproperlymaintained.
Figure 10. Choke Knob
3. Keep your foot OFF the blade speed control pedal and
in all circumstances, start the engine at idle (without
touching the pedal).
2. 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 will
drain the battery.
4. Insert the ignition key into the ignition switch.
5. Turn the ignition key (Figure 11) clockwise and listen
for the engine to start. Once the engine starts release
ignition key.
3. The right foot pedal (Figure 9) controls blade and
engine 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.
6. If the engine fails to start in this manner, consult the
engine owner's manual supplied with the trowel.
7. Test the safety stop switch by standing up briefly. The
switch under the seat should cause the engine to stop. If
theswitchfailstoshutdowntheengine,turnofftheengine
with the key switch and repair the safety stop switch.See
the Troubleshooting section for possible causes.
IGNITION
KEY
Figure 9. Blade Speed Control Foot Pedal
STaRTINg THe eNgINe
START
1. With one foot on the ground and the other foot placed
on the trowel's platform, grab the frame near the seat
and lift yourself onto the trowel.Sit in the operator's seat
and ensure the control handles, foot pedal and control
panel items can be comfortably accessed.
OFF
Figure 11. Ignition Key
8. Let the engine idle for 3-5 minutes. If choke is applied,
push the choke to the open position as soon as the
engine will run smoothly.
2. When starting a cold engine, pull the choke knob,
(Figure 10) out to the closed position.In warm weather
or when the engine is warm, the unit can be started
with choke halfway or completely open.
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OperatiOn
Steering
6. Pull both the left and right joysticks backward and
repeat steps 3 through 5 while substituting the word
reverse for forward.
Two control levers located in front of the operator’s seat
provide directional control for the JWN-SERIES Ride-On
Power Trowel. Table 4 illustrates the various directional
positions of the joysticks and their effect on the ride-on
trowel.
Table 4. Control Lever Directional positioning
CONTROL JOYSTICK
RESULT
& DIRECTION
Causes only the
left side of the
ride-on trowel to
move forward.
Move LEFT Joystick
1. Push both the left and right control levers forward. See
Figure 12.
FORWARD
LEFT CONTROL LEVER
Causes only the
left side of the
ride-on trowel to
move backward.
Move LEFT Joystick
BACKWARD
Causes only the
right side of the
ride-on trowel to
move forward.
Move RIGHT Joystick
FORWARD
FORWARD DIRECTION
Move RIGHT Joystick
Causes only the
right side of the
ride-on trowel to
move backward.
BACWARD
Move BOTH Joysticks
Causes the ride-on trowel
to move forward in
a straight line.
RIGHT CONTROL LEVER
FORWARD
Figure 12. Left and Right Control Levers
Causes the ride-on trowel
to move backard in
a straight line.
Move BOTH Joysticks
BACKWARD
2. 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.
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
3. Practice holding the machine in one place as you
increase blade speed. When about 75% of maximum
blade speed has been reached, the blades 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.
CauTION
Trowel arms can be damaged by rough handling or by
striking exposed plumbing or forms while in operation.
aLWayS look out for objects which might cause damage
to the trowel arms.
4. 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.
5. 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.
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Maintenance
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.
yearly (500-600 Hours)
1. Check and replace if necessary the arm bushings, and
thrust collar bushings, shaft seals and belts.
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.
2. Check pitch control cables for wear.
3. Replace gearbox lubricant.
air Cleaner (Daily)
WaRNINg
Thoroughly remove dirt and oil from the engine and
control area. Clean or replace the air cleaner elements as
necessary.Check and retighten all fasteners as necessary.
Accidental starts can cause severe injury or
death.
1. Release the four latch tabs (Figure 13) from the air
cleaner cover, and remove the cover.
aLWayS place the ON/OFF switch in the
OFF position.
Disconnect and ground spark plug leads
and disconnect negative battery cable
from battery before servicing.
maINTeNaNCe SCHeDuLe
1. Check and retighten all fasteners as necessary.
Daily (8-10 Hours)
1. Check the fluid levels in the engine and gearboxes, fill
as necessary. Check air cleaner. See section on Air
Cleaner servicing.
Figure 13. Air Cleaner Components
2. Remove the foam filter from the cover.
Weekly (30-40 Hours)
3. Remove the paper filter from the air cleaner case.
4. Inspectbothairfilterelements, replacethemifnecessary.
1. Relube arms, thrust collar and steering links.
2. Replace blades if necessary.
5. To clean the paper air filter, 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 air
cleaner case side.
3. Check and clean or replace the engine air filter
as necessary. (See following section on Air Filter
Maintenance.)
4. Replace engine oil and filter as necessary. (See
following section on Oil and Filter.)
6. NeveR try to brush off dirt; brushing will force dirt
into the fibers. If the paper element is excessively dirt,
replace element.
monthly (100-125 Hours)
1. Remove, clean, reinstall and relube the arms and thrust
collar. Adjust the blade arms.
7. Clean the foam air filter element in warm soapy water,
rinse and allow to dry thoroughly. Or clean with a
nonflammable solvent and allow to dry. DO NOT pour
any type of oil into the foam element.
2. Replace gearbox lubricant after the first 100 hours of
operation. Replace every 500-600 hours thereafter.
3. Check drive belt for excessive wear.(Refer to following
section on Drive Belt maintenance.)
8. Wipedirtfromtheinsideoftheaircleanerbodyandcover,
using a moist cloth.Be careful not to let any dirt or debris
enter the air chamber that leads to the carburetor.
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Maintenance
9. Reinstall the foam air filter element in the air cleaner
cover, then reinstall the paper air filter element and
cover to the air cleaner case. Securely latch the four
hook tabs on the air cleaner cover.
CauTION
Operating the engine with a blocked grass screen, dirty or
plugged cooling fins, and/or cooling shrouds removed will
cause engine damage due to overheating.
Figure 15. Honda Fuel Filter
Changing engine Oil (100 Hours)
Oil and Fuel Lines
1. Change the engine oil after the first 20 hours of use,
then change every 6 months or 100 hours.
„ Check the oil and fuel lines and connections regularly
for leaks or damage. Repair or replace as necessary.
2. Remove the oil filler cap (Figure 5, Item 1), and fill
engine crankcase with recommended type oil as listed
in Figure 6. Fill to the upper limit of dipstick.
„ Replace the oil and fuel lines every two years to maintain
the line's performance and flexibility.
3. Crankcase oil capacity is 1.6 qts. (1.50 liters) without
oil filter replacement, with oil filter replacement 1.8
qts. (1.7 liters).
eNgINeTuNe-up
„ See your engine manual for specific information on tuning
up your engine, checking and gaping the spark plugs, etc.
Oil Filter (200 Hours)
NOTICE
1. Replace the engine oil filter (Figure 14) every 200 hours.
See the engine manual supplied with your machine
for appropriate engine maintenance schedule and
troubleshooting guide for problems.
OIL
FILTER
LONg TeRm STORage
„ Remove the battery.
„ Drain fuel from fuel tank, fuel line and carburetor.
„ Remove spark plug and pour a few drops of motor oil into
cylinder. Crank engine 3 to 4 times so that oil reaches
all internal parts.
Figure 14. Oil Filter
2. Be sure to coat the seal of the new oil filter with clean
engine oil.
„ 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.
Fuel Filter (200 Hours)
1. Replacetheenginefuelfilter(Figure15)every200hours.
CauTION
NeveR store the ride-on trowel with fuel in the tank for
any extended period of time. Always clean up spilled fuel
immediately.
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Maintenance
BeLT guaRD RemOvaL
NOTICE
1. To gain access to the drive belt, remove Drive Belt
Guard (Figure 16).
This section is intended to aid users in the maintenance
of drive assemblies with the new style Multi-Clutch.
CHeCKINg THe DRIve BeLT
The drive belt needs to be replaced as soon as it starts
to show signs of wear. NeveR use a defective drive belt
under any circumstances.Indications of excessive belt wear
are fraying, squealing when in use, a belt that emit smoke
or a burning rubber smell when in use.
DRIVE BELT
GUARD
Under normal operating conditions, a drive belt may last
approximately 150 hours. If your trowel is not reaching this
kind of life span for drive belt wear, check the drive belt for
proper pulley alignment and spacing.
REMOVE
8 PLACES
To gain access to the drive belt, remove the drive belt guard
cover (Figure 16), then visually inspect the drive belt for
signs of damage or excessive wear.If the drive belt is worn
or damaged, replace the drive belt.
WaRNINg
Figure 16. Drive Belt Gurad Removal
DONOTattempttoinserthandsortoolsintothe
beltareawhiletheengineisrunning.NeveRrun
theenginewiththesafetyguardsremoved.Keep
fingers, hands, hair and clothing away from all
movingpartstopreventbodilyinjury.
WaRNINg
DONOTremovethedrivebeltguardcoveruntil
the muffler has cooled.Allow the entire trowel
tocooldownbeforeperformingthisprocedure.
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Maintenance
SpaRe DRIve BeLT RemOvaL
(uSINg RepLaCemeNT DRIve BeLT)
The JWN-SERIES Ride-On PowerTrowel is equipped with
a replacement drive belt (spare) carrier, which is mounted
on the inboard side of the left-side gearbox .Make sure that
there is aLWayS a spare drive belt in the drive belt carrier
before the trowel is placed on a slab to finish concrete.
SPARE
DRIVE BELT
In the event of a drive belt failure, the spare (replacement)
drive belt can be used for quick replacement at the job site
for continued trowel operation.
LOWER DRIVE
PULLEY
CV-JOINT
1. To replace an existing drive belt with the spare drive
belt, remove the 2 bolts that secure the spare belt
holder to the left-side gearbox adapter plate. (Figure
17)Take care not to contaminate the replacement drive
belt with grease or dirt.
Figure 18. Spare Drive Belt Routing
5. Next, squeeze the drive belt (Figure 19) and pull
upwards and towards the rear of the trowel. This will
spread open the faces of the lower drive pulley.
REMOVE
2 PLACES
PULL UPWARDS
AND TOWARDS
REAR OF TROWEL
SPARE DRIVE
BELT HOLDER
DRIVE BELT
SPARE
DRIVE BELT
REMOVE
LEFT-SIDE
GEARBOX
ADAPTER PLATE
LOWER
PULLEY
Figure 17. Spare Belt Removal
Figure 19. Spare Drive Belt Placement
(Lower Pulley)
2. Remove existing drive belt from clutch and lower drive
pulley, by cutting belt.
3. Ensure all remnants of old drive belt have been
removed from the sheaves/grooves of the clutch and
lower pulley
4. Slide spare drive belt over the CV-joint (Figure 18) an
onto the lower drive pulley.
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Maintenance
6. Place spare drive belt onto clutch as shown in Figure
20
CLUTCH
2. Starting at the left-side gearbox, use a 1/4" allen
wrench and remove the 3 bolts and lock washers that
secure the CV-joint (Figure 21) to the left-side gearbox.
Retain mounting hardware for later use.
GROOVES
REMOVE
3 PLACES
GAP
DRIVE
BELT
LEFT-SIDE
GEARBOX
CV-JOINT
COUPLER
Figure 21. CV-Joint Removal
3. Once the CV-joint has been separated from the left-
side gearbox coupler, push the CV-joint inward so that
a gap (Figure 21) exists between the gearbox coupler
and CV-joint.
Figure 20. Spare Drive Belt Placement (Clutch)
7. Reinstall belt guard assembly.
4. Slide new spare drive belt between gearbox coupler
and CV-joint.
SPARE DRIVE
INSTALL
STaRTINg THeTROWeL/TeSTINg
BELT HOLDER
2 PLACES
(INSTALL)
1. While sitting in the operator’s position, start the trowel
as referenced in the Operator’s Manual. Be sure to
check the engine oil level prior to starting the engine.
LEFT-SIDE
GEARBOX
CauTION
ADAPTER PLATE
The engine’s exhaust contains harmful emissions.
aLWayS have adequate ventilation when operating.
Direct exhaust away from nearby personnel.
COUPLER
CV-JOINT
SPARE
2. Run machine, bringing throttle up so clutch engages.
Cycle the engine from idle to full throttle twice, and shut
off engine. Remove key.
DRIVE BELT
SpaRe DRIve BeLT INSTaLLaTION
Cv-joint assembly Removal (left-side)
Figure 22. Spare Drive Belt Routing
5. Mount new spare drive belt and cover ( Figure 22) onto
left-side gearbox. Reinstall the 2 bolts that secure the
spare belt holder to the left-side gearbox adapter plate.
1. If necessary, place the trowel on suitable supports
(jack-stands) and observe all safety precautions.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 27
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Maintenance
Cv-JOINT aSSemBLy INSTaLLaTION (LeFT-SIDe)
HOW ITWORKS
1. Apply a thin coat of RVT silicone to mating surfaces of
the CV-joint (Figure 23) and left-side gearbox coupler.
The Multi-Clutch functions much like a standard CVT system.
As the engine RPM’s increase, the drive or primary clutch
closes, forcing the belt to ride outwards on the drive sheaves.
The closing of the drive clutch also forces the belt to open the
drivenorsecondarysheaves.Theopeningandclosingofthese
sheavescreatesaratiovariation…henceCVTorContinuously
Variable Transmission.
INSTALL
3 PLACES
Belt protection is achieved within the Multi-Clutch through
the use of a series of centrifugal clutches.While most CVT
systems have a loose or slack belt while the engine idles,
the sheaves of those systems are constantly rotating and
wearing on the belt.
RTV
SILICONE
LEFT-SIDE
GEARBOX
CV-JOINT
COUPLER
Those systems also require the stationary belt to be
pinched by the constantly rotating sheaves during startup.
The relative rotation of the sheaves to the belt causes
unnecessary wear on the belt. With traditional CVT
systems, wear on the belt happens any time the engine is
idling and at every start up of the driven equipment.This is
where the Multi-Clutch differs from the other CVT’s.
Figure 23. CV-Joint Installation
2. Using a 1/4" allen wrench install the 3 bolts and lock
washers that secure the CV-joint (Figure 23) to the
left-side gearbox.
The Multi-Clutch utilizes two centrifugal clutches (the starter
clutch system) to drive the sheaves of the drive (primary)
clutch.What that means is that the belt can remain tight in
the sheaves, and that both the sheaves and the belt are
stationary while the vehicle is idling.This eliminates the belt
wear at an idle, and during start up, while also providing
one additional form of belt protection.
The centrifugal clutches (starter clutch) can act as overload
protection as well.In cases where too much torque is trying
to be transmitted to the belt, the centrifugals can slip before
the maximum load on the belt is achieved.What this means
is that instead of the belt slipping on the sheaves during
an overload, the centrifugals will first slip further protecting
the belt from damage.
page 28 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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Maintenance
OPERATING POSITION
DISENGAGED
(ONE SIDE)
Blade pitch
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
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).
Single pitch
On a Single Pitch trowel each spider assembly can be
pitched individually, forcing the operator to constantly make
adjustments on each pitch tower.
Twin pitchTM
Trowels equipped with Twin PitchTM Controls may need
to have blade pitch between the two sets of blades
"syncronized". If the blades need to be syncronized this
is easily accomplished by performing the following. Refer
to Figure 24.
Figure 24. Pitch Towers
1. Lift the pitch adjustment handle on either side. Once
lifted, that side is now disconnected from the Twin
Pitch system.
2. Adjust to match the opposite side.
3. When adjusted, lower the handle to Twin Pitch
operating position.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 29
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Maintenance
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.
Blade pitch adjustment procedure
Maintenance adjustment of blade pitch is made by adjusting
a bolt (Figure 25) 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.
Look for the following indications if blades are wearing
unevenly. If so, adjustment may be necessary.
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.
„ Is one blade is completely worn out while the others
look new?
„ Does the machine have a perceptible rolling or bouncing
motion when in use?
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.
„ Look at the machine while it is running, does the trowel
guard ring “rock up and down” relative to the ground?
„ Do the pitch control towers rock back and forth?
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.
Spider Plate
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.
Trowel Lever
(Finger)
Trowel Arm
1. Place the machine on a flat, level surface. Adjust
the blade pitch control to make the blades as flat as
possible. 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.
Blade Pitch
Adjustment Bolt
Figure 25. 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.
2. Remove the bolts and lock washers on the trowel arm,
and then remove the blade.
3. Scrape all concrete and debris from the trowel arm.
This is important to properly seat the new blade.
4. Install the new blade, maintaining the proper orientation
for direction of rotation.
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.
5. Reinstall the bolts and lock washers.
6. Repeat steps 2-5 for all remaining blades.
page 30 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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Maintenance
Figure 26 illustrates "worn spider bushings or bent trowel
arms".Check to see that 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.
Clean-up
Never allow concrete to harden on the power trowel.
Immediately after use wash any concrete off the trowel
with water, be careful not to spray a hot engine or muffler.
An old paint brush or broom may help loosen any concrete
that has started to harden.
ADJUSTMENT
BOLT
INCORRECT
ALIGNMENT
LOWER
Trowel arm adjustment procedure
WEAR
PLATE
“DISHED” EFFECT ON
FINISHED CONCRETE
NOTICE
The following procedure should be followed to adjust
trowel arms when it becomes apparent that the trowel
is finishing poorly or in need of routine maintenance.
SURFACE
Figure 26. Worn Arm Bushings
Figure 27 illustrates the "correct alignment " for a spider
plate (as shipped from the factory).
A level, clean area to test the trowel prior to and after
adjustment 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' three-quarter
inch thick flat steel plate should be used for testing.
GEARBOX
CORRECT ALIGNMENT
BLADES ARE FLAT
ARM MOUNTING
BAR
BLADE
1. To determine which blades need adjustment, place the
trowel in the test area (three-quarter inch thick plate)
and look for the following conditions:
SURFACE
Figure 27. Correct Spider Plate Alignment
• Pitch the blades as flat as possible and 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.
2. Start engine, and bring trowel blades up to full speed
and look for the following conditions:
• Does the trowel have a perceived rolling or bouncing
motion?
• Is the machine wearing out blades unevenly (i.e. one
blade is completely worn out while the others look
new)?
• Does the guard ring “rock up and down” relative to
the ground?
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 31
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Maintenance
Trowel arm Removal
Trowel Blade Removal
1. Each trowel arm is held in place at the spider plate by
a hex head bolt (with zerk grease fitting). Remove the
hex head bolt/zerk grease fitting from the spider plate.
(Figure 28)
1. Remove the trowel blades from the trowel arm by
removing the three hex head bolts (Figure 30) from
the trowel arm. Set blades aside.
2. Remove the trowel arm from the spider plate.
SPIDER
PLATE
ZERK
FITTING
Figure 30. Trowel Blades
Figure 28. Removing Zerk Grease Fitting
2. Wire brush any build-up of concrete from all six sides
of the trowel arm. Repeat this for the remaining three
arms.
3. 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.
4. Examine the bronze trowel arm bushing insert (Figure
29), clean if necessary.Replace bushing if out-of-round
or worn.
Figure 29. Bronze Bushings
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Maintenance
CheckingTrowel arm Straightness
Trowel arm adjustment
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 31 and Figure 32.
1. Locate the trowel arm adjustment tool (Figure 33) P/N
9177.
Adjustment
Bolt
Locking
Blade
Attachment
Bolt Hole
Nut
“Distance”
(One of Three)
Lever Mounting Slot
(Left Arm Shown)
Fixture
Arm
Roll Pin
Hole
Flat of
Hexagonal
Shaft
(Top of Arm)
Trowel Arm
Round Shaft Section
Trowel Arm
Hexagonal (Hex)
Shaft Section
Figure 33. Trowel Arm Adjustment Tool
(Side View)
2. Ensurethefixturearmisinthepropersetting(upordown)
for your trowel arm rotation as shown in Figure 34.
Figure 31. Trowel Arm
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.
NOTICE
Arms with clock-wise blade rotation use the fixture arm
in the UP position (A in Figure 34). Arms with counter
clock-wise blade rotation use the fixture with the fixture
arm in the DOWN position. (B in Figure 34).
2. Checkeachofthesixsidesofthetrowelarm(hexsection).
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 32) .
Trowel
Arm
A
Flat Test
Surface
Feeler Gauge
(.005 in. / 0.127 mm)
Feeler Gauge
(.004 in. / 0.10 mm)
B
Figure 32. Checking Trowel Arm Flatness
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.
Figure 34. Trowel Arm Adjustment Setup
4. If the trowel arm is found to be uneven or bent, replace
the trowel arm.
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Maintenance
3. Shown in Figure 35 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.
Reassembly
1. Clean and examine the upper/lower wear plates and
thrust collar. Examine the entire spider assembly.Wire
brush any concrete or rust build-up.If any of the spider
components are found to be damaged or out of round,
replace them.
4. Unscrew the locking bolts on the adjustment tool and
place the trowel arm into the fixture channel as shown
in Figure 35. 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.
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. Reinstall bronze bushing onto trowel arm.
4. Repeat steps 2 -3 for each trowel arm.
Trowel Arm
Lever
Arm
Fixture
Arm
5. Make sure that the spring tensioner is in the correct
position to exert tension on the trowel arm.
Adjustment
Bolt
Shim
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.
Distance = .010 in.
Locking
Bolts
Adjustment
Bolt
7. Lock trowel arms in place by tightening the hex head
bolt with zerk grease fitting and jam nut.
Trowel Arm
Adjustment
Fixture
8. Re-install the blades onto the trowel arms.
9. Install stabilizer ring onto spider assembly.
Figure 35. Trowel Arm Adjustment Fixture
Components
10. Lubricate all grease points (zerk fittings) with premium
"Lithium 12" based grease, conforming to NLG1 Grade
#2 consistency.
5. Use an allen wrench to tighten the locking bolts
securing the trowel arm in place.
6. Adjust the bolt "distance" shown in Figure 35 to match
one of the arms. The other arms will be adjusted to
match this distance.
7. 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.
8. Once the correct adjustment is made, tighten the lock
nut on the trowel arm to lock in place.
9. Loosen locking nuts on the adjustment fixture, and
remove trowel arm.
10. Repeat steps for the remaining trowel arms
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Maintenance
2. Rotate blades into position under Z-Clips. 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.
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.
3. Attach the blade tie-downs to the far side of the Z-Clip
brackets with tie-down knobs as shown in Figure 36.
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.
WaRNINg
Lifting/Crush Hazard. DO NOT lift trowel with
pans attached.
DeCOmmISSIONINg TROWeL/COmpONeNTS
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),
the following procedure must take place:
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.
Refer to Figure 36 when installing pans onto finisher blades.
1. Drain all fluids completely. These may include oil,
gasoline, hydraulic oil and antifreeze. Dispose of
properly in accordance with local and governmental
regulations. Never pour on ground or dump down
drains or sewers.
Knob,Tie-Down
Z-Clip Pans
Tie-Down,
Blade
2. Remove battery and bring to appropriate facility for lead
reclamation. Use safety precautions when handling
batteries that contain sulfuric acid, (Reference Setup
Section).
Blade
Assembly
3. The remainder can be brought to a salvage yard or
metal reclamation facility for further dismantling.
Z-Clip Pan
Figure 36. Z-Clip Finisher Pan Instructions
1. Lift trowel just enough to slide pan under blades.Lower
finisher onto pan with blades adjacent to Z-Clips.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 35
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wirinG DiaGraM
HONDA HARNESS
1
WHITEMAN HARNESS
CONTROL BOX
B
A
17
P2-A
L
P2-B
L
P1-A
L
P1-B
L
W3
W4
W5
A
A
A
B/W
ST
Y
B/Y
B
Y
B/Y
B
Y
B/Y
B
Y
B/Y
B
(W15
)
B/Y
A
LO
Z1
GND.
GND.
BLK
W
BATT.
MALE
MALE
FEMALE
FEMALE
G
GND.
16
B
IGN.
IGNITION
SWITCH
B/Y
W8
A
FUEL CUT-OFF
SOLENOID
GRN
5
T14
3
T4
CONTROL
PANEL GND
W2
A
W17
A
HOUR
W7
A
+12VDC
2
Z2
METER
G (GRN)
Y (YEL)
L (BLUE)
B/Y (BLK/YEL)
T1
+12VDC
30 AMP.
FUSE
18
STARTER
MOTOR
8
+12VDC
POSITIVE
T5
C
P1 J1
GR
GR
W/L
GRAY
GRAY
BATTERY
VOLTAGE
REGULATOR
RECTIFER
NC
BLK/YEL
B/Y
W
4
M
WHT
B
BLK
E2
20 AMP
15
CHARGE COIL
GND.
CHASSIS
GND.
CHASSIS
GND.
NEGATIVE
GR
GR
GR
GR
14
K1-1 NC
87A
CHASSIS
GND.
30
B/Y (BLK/YEL)
D
K1
K1-1 NO
J3
1
P3
1
COMMON
W16
A
87
8
W6
A
2
2
NC
FUSE
3
4
5
3
4
5
W12
+12VDC
A
BLOCK
F1
W25
A
T12
+12VDC
+12VDC
MAIN
RELAY
T19
7
15A
W11
85
86
F2
K1
MAIN RELAY
COIL
W22
A
T11
T10
T9
T18
3A
F3
W10
W9
NC
F4
NC
T13
Figure 37. Wiring Diagram
CONTROL
PANEL GND
5
page 36 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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wirinG DiaGraM
WIRE
REF.
WIRE
HARNESS
DWG.
COLOR
GAGE
BODY/STRIPE
W1
A
WHITE
16 AWG
L
W2
A
W3
BLACK/WHITE
BLUE
16 AWG
18 AWG
18 AWG
18 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
12 AWG
12 AWG
16 AWG
18 AWG
18 AWG
12 AWG
16 AWG
12 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
A
Y
W4
A
YELLOW
W5
A
W6
BLACK/YELLOW
BLACK/ORANGE
RED
A
UNIT
B
W7
A
W8
A
BLACK
W9
A
W10
RED
RED
A
W11
W12
W13
RED
A
A
RED
RED
A
A
A
A
23540
W14
W15
W16
BLACK/YELLOW
BLACK/YELLOW
BLACK/ORANGE
RED
CHASSIS
GND.
COMBINATION SWITCH
CONTINUITY
IGNITION
W17
W18
W19
W20
W21
W22
W23
IG
E
BAT LO ST
COIL (RIGHT)
A
A
A
A
A
A
BLACK
OFF
ON
BLACK
BLACK/YELLOW
BLACK/GREEN
RED/GREEN
BLACK/YELLOW
BLACK/ YELLOW
BLACK/YELLOW
RED/YELLOW
RED/YELLOW
RED/YELLOW
ST
Y
A
A
A
A
A
A
W24
W25
W26
W27
W28
OIL LEVEL
SWITCH
W1
BLACK/ORANGE
BLACK/ORANGE
RED YELLOW
16 AWG
16 AWG
16 AWG
16 AWG
B
B
B
B
W2
W3
W4
23541
BLACL/YELLOW
Y
B
W1
RED/YELLOW
BLACK/YELLOW
RED/GREEN
BLACK/GREEN
RED/YELLOW
BLACK/YELLOW
RED
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
C
W6
C
W3
W4
C
C
C
C
23542
W5
W6
UNIT
W7
W8
W9
C
C
C
RED/YELLOW
RED/GREEN
I
P1 J1
W1
B
CHASSIS
GND.
1
2
1
2
W2
B
1
2
IGNITION
COIL (LEFT)
SEAT
10
SWITCH
MAIN PANEL
HARNESS
P/N 23540
SEAT FRAME
HARNESS
P/N 23541
P4
J1
1
1
2
3
4
REAR LIGHT
J
19
2
3
4
P2 J2
W3
B
W27
W23
GND.
A
1
2
1
2
DS3
W4
B
A
E
F
W16
W6
MAIN PANEL MAIN FRAME
A
LEFT FRONT
LIGHT
13
W20
HARNESS
P/N 23540
HARNESS
P/N 23542
W26
A
A
K
P1 J1
Z3
Z4
A
W5
W6
+12VDC
C
GND.
DS2
2
1
2
1
P5
J1
W1
W28
C
C
A
1
2
1
Z1
W24
W22
W21
W2
A
A
A
C
2
RIGHT FRONT
LIGHT
W25
12
A
W3
C
L
P2 J2
Z2
3
4
3
4
P
W8
C
C
GND.
2
1
DS1
1
2
5
6
5
6
W7
1
2
W22
A
T20
T21
SPRAY
9
LIGHT
M
11
G
H
SWITCH
J2 P2
SWITCH
1
2
1
2
1
2
+12VDC
20
N
P3 J3
W9
C
SPRAY
PUMP
GND.
1
2
1
2
W4
MOTOR
C
T17
T16
CONTROL
5
PANEL GND.
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wirinG DiaGraM cOMpOnent lOcatOr
1
A
2
Y
L
L
Y
B/Y
B
B/Y
B
9
4
GND.
3
10
8
5
I
7
D
6
C
11
15
P
L
Y
/N
36
09
9
B
B
B/Y
12
L
16
G
18
H
17
14
M
K
13
REF.
DES.
CONNECTOR
FUNCTION
Y
L
ENGINE INTERFACE CTRL. B0X SIDE
A
B/Y
B
G
B
L
Y
19
ENGINE INTERFACE ENGINE SIDE
VOLTAGE REGULATOR/RECTIFIER
B/Y
B
C
D
E
1
3
J
5
2
MAIN RELAY
4
MAIN PANEL HARNESS P/N 23540 (P4)
MATES WITH SEAT FRAME HARNESS
P/N 23541 (J1)
3 2
4 1
20
1
SEAT FRAME HARNESS P/N 23541 (J1)
MATES WITH MAIN PANEL HARNESS
P/N 23540 (P4)
2
1
3
4
F
G
H
1
RETARDANT ONLY
N
4
5
6
3
2
1
MAIN PANEL HARNESS P/N 23540 (P5)
MATES WITH MAIN FRAME HARNESS
P/N 23542 (J1)
3
2
1
4
5
6
MAIN FRAME HARNESS P/N 23542 (J1)
MATES WITH MAIN PANEL HARNESS
P/N 23540 (P5)
1
2
SEAT SWITCH
I
1
2
2
J
REAR LIGHT
NOTES:
1
1
2
K
LEFT FRONT LIGHT
REFERENCE DESIGNATORS E THRU F NOT SHOWN.
LOCATION MUST BE TRACED THROUGH HARNESS.
1
2
L
RIGHT FRONT LIGHT
SPRAY SWITCH
1
M
N
Figure 38. Wiring Component Locator
1
2
SPRAY PUMP MOTOR
page 38 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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trOuBleShOOtinG
Troubleshooting (engine)
Symptom
possible problem
Solution
Spark plug bridging?
Check gap, insulation or replace spark plug.
Clean or replace spark plug.
Carbon deposit on spark plug?
Short circuit due to deficient spark plug
insulation?
Check spark plug insulation, replace if worn.
Improper spark plug gap?
Fuel reaching carburetor?
Water in fuel tank?
Set to proper gap.
Check fuel line.
Flush or replace fuel tank.
Replace fuel filter.
Fuel filter clogged?
Stuck carburetor?
Check float mechanism.
Check transistor ignition unit.
Difficult to start, fuel is available, but no spark
at spark plug.
Spark plug is red?
If insufficient compression, repair or replace
engine. If injected air leaking, correct leak. If
carburetor jets clogged, clean carburetor.
Spark plug is bluish white?
Check transistor ignition unit is broken, and
replace defective unit. Check if voltage cord
cracked or broken and replace. Check if
spark plug if fouled and replace.
No spark present at tip of spark plug?
No oil?
Add oil as required.
Oil pressure alarm lamp blinks upon starting? Check automatic shutdown circuit, "oil
(if applicable)
sensor". (if applicable)
ON/OFF switch is shorted?
Ignition coil defective?
Improper spark gap, points dirty?
Check switch wiring, replace switch.
Replace ignition coil.
Difficult to start, fuel is available, and spark is
present at the spark plug.
Set correct spark gap and clean points.
Condenser insulation worn or short circuiting? Replace condenser.
Spark plug wire broken or short circuiting?
Wrong fuel type?
Replace defective spark plug wiring.
Flush fuel system, and replace with correct
type of fuel.
Difficult to start, fuel is available, spark is
present and compression is normal.
Water or dust in fuel system?
Air cleaner dirty?
Flush fuel system.
Clean or replace air cleaner.
Close choke.
Choke open?
Suction/exhaust valve stuck or protruded?
Piston ring and/or cylinder worn?
Reseat valves.
Replace piston rings and/or piston.
Difficult to start, fuel is available, spark is
present and compression is low.
Cylinder head and/or spark plug not tightened
properly?
Torque cylinder head bolts and spark plug.
Head gasket and/or spark plug gasket damaged? Replace head and spark plug gaskets.
No fuel in fuel tank?
Fill with correct type of fuel.
Apply lubricant to loosen fuel cock lever,
replace if necessary.
Fuel cock does not open properly?
No fuel present at carburetor.
Fuel filter/lines clogged?
Fuel tank cap breather hole clogged?
Air in fuel line?
Replace fuel filter.
Clean or replace fuel tank cap.
Bleed fuel line.
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 39
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trOuBleShOOtinG
Troubleshooting (engine) - continued
possible problem
Symptom
Solution
Clean or replace air cleaner.
Check float adjustment, rebuild carburetor.
Clean or replace spark plug.
Set to proper gap.
Air cleaner dirty?
Improper level in carburetor?
Defective spark plug?
Weak in power, compression is proper and
does not misfire.
Improper spark plug?
Flush fuel system and replace with correct
type of fuel.
Water in fuel system?
Weak in power, compression is proper but
misfires.
Dirty spark plug?
Clean or replace spark plug.
Replace ignition coil.
Ignition coil defective?
Spark plug heat value incorrect?
Wrong type of fuel?
Replace with correct type of spark plug.
Replace with correct type of fuel.
Clean cooling fins.
Cooling fins dirty?
Engine overheats.
Clear intake of dirt and debris. Replace air
cleaner elements as necessary.
Intake air restricted?
Oil level too low or too high?
Governor adjusted incorrectly?
Governor spring defective?
Fuel flow restricted?
Adjust oil to proper level.
Adjust governor.
Rotational speed fluctuates.
Replace governor spring.
Check entire fuel system for leaks or clogs.
Recoil mechanism clogged with dust and
dirt?
Clean recoil assembly with soap and water.
Replace spiral spring.
Recoil starter malfunctions. (if applicable)
Spiral spring loose?
Ensure tight, clean connections on battery
and starter.
Loose, damaged wiring?
Starter malfunctions.
Battery insufficiently charged?
Recharge or replace battery.
Replace starter.
Starter damaged or internally shorted?
Check and clean valves. Check muffler and
replace if necessary.
Over-accumulation of exhaust products?
Wrong spark plug?
Burns too much fuel.
Replace spark plug with manufacturer's
suggested type.
Lubricating oil is wrong viscosity?
Worn rings?
Replace lubricating oil with correct viscosity.
Replace rings.
Exhaust color is continuously "white".
Air cleaner clogged?
Clean or replace air cleaner.
Adjust choke valve to correct position.
Choke valve set to incorrect position?
Carburetor defective, seal on carburetor
broken?
Exhaust color is continuously "black".
Replace carburetor or seal.
Poor carburetor adjustment, engine runs too
rich?
Adjust carburetor.
ON/OFF device not activated ON?
Battery disconnected or discharged?
Ignition switch/wiring defective?
Turn on ON/OFF device.
Check cable connections. Charge or replace
battery
Will not start, no power with key "ON". (if
applicable)
Replace ignition switch. Check wiring.
page 40 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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trOuBleShOOtinG
Troubleshooting (Ride-On mechanical Trowel)
Symptom
possible problem
Solution
Make sure that the stop switch is functioning when the
operator is seated. Replace switch if necessary.
Stop switch malfunction?
Look at the fuel system. Make sure there is fuel being
supplied to the engine. Check to ensure that the fuel
filter is not clogged.
Engine running rough or not at all.
Fuel?
Check to ensure that the ignition switch has power and
is functioning correctly.
Ignition?
Bad contacts?
Replace switch.
Safety stop switch not functioning.
Loose wire connections?
Other problems?
Check wiring. Replace as necessary.
Consult engine manufacturer’s manual.
Make sure blades are in good condition, not excessively
worn. Finish blades should measure no less than 2
inches (50mm) from the blade bar to the trailing edge,
combo blades should measure no less that 3.5 inches
(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
(contact Parts Department).
Pitch Adjustment?
Bent trowel arms?
Check the spider assembly for bent trowel arms. If one
of the arms is even slightly bent, replace it immediately.
Trowel bounces, rolls concrete, or makes uneven
swirls in concrete.
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 inch (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.
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 inch (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 inch (1.6 mm) - as measured at
the thrust collar O.D., replace the bushing in the thrust
collar.
Thrust collar bushing?
Thrust bearing worn?
Main shaft?
Check the thrust bearing to see that it is spinning freely.
Replace if necessary.
The main output shaft of the gearbox assembly should
be checked for straightness. The main shaft must run
straight and cannot be more than 0.003 inch (0.08 mm)
out of round at the spider attachment point.
Machine has a perceptible rolling motion while
running.
Check to make sure that both fingers of the yoke press
evenly on the wear cap. Replace yoke as necessary.
Yoke?
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?
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 41
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trOuBleShOOtinG
Troubleshooting (Ride-On mechanical Trowel) - continued
possible problem
Symptom
Solution
Check all electrical connections in the lighting circuit.
Verify wiring is in good condition with no shorts. Replace
defective wiring or components immediately.
Wiring?
If +12VDC is present at light fixture connector when light
switch is activated and light does not turn on, replace
light bulb.
Lights?
Lights (optional) not working.
Check the continuity of light switch. Replace light switch
if defective.
Bad switch?
Bad fuse?
Retardant?
Check fuse. Replace fuse if defective.
Check retardant level in tank. Fill tank as required.
Check all electrical connections in the spray pump
circuit. Verify wiring is in good condition with no shorts.
Replace defective wiring or components immediately.
Wiring?
Check the continuity of both left and right spray switches
(palm handles). Replace spray switch if defective..
Retardant spray (optional) not working.
Bad switch?
If +12VDC is present at pump connector when spray
switch is activated and pump does not operate, replace
spray pump.
Bad spray pump?
Bad fuse?
Check fuse. Replace fuse if defective.
See section on blade speed adjustment.
Blade speed out of adjustment?
Adjust the connecting linkage found at the base of the
handle. Contact your MQ field service manager for
instructions.
Steering linkage out of adjustment?
Steering is unresponsive.
Check for wear of steering bearings and linkage
components. Replace if necessary.
Worn components?
Operating position is uncomfortable.
Seat adjusted for operator?
Adjust seat with lever located on the front of the seat.
If the motor runs and the pitch is not affected, parts
inside the power head may be loose or broken. Return
power head to dealer for service.
Broken or loose parts?
Wiring?
Check all electrical connections and wiring. Check the
continuity at the power head unit. Verify that there is
voltage present at the power head switch with the key
switch in the “on” position.
Power head on Electric Pitch (optional) not
working.
Check the continuity of the switch. If switch is
malfunctioning, replace immediately.
Switch?
Make sure that both crank handles are pushed down as
far as possible to ensure that the linkage is engaged.
Crank handles?
Linkage on Twin Pitch not working.
Broken part?
Worn belts?
Replace all broken parts immediately.
Replace belt.
Adjust per instructions in maintenance section of this
manual.
Clutch out of adjustment?
Worn or defective clutch parts?
Replace parts as necessary.
Clutch slipping or sluggish response to engine
speed change.
Rotate input shaft by hand. If shaft rotates with difficulty,
check the input and output shaft bearings. Replace as
necessary.
Worn bearings in gearbox?
Verify that the gearbox shaft rotates when the input shaft
is rotated. Replace both the worm and worm gear as a
Worn or broken gears in gearbox?
page 42 — JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12)
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nOteS
JWN-SeRIeS RIDe-ON pOWeR TROWeL • OpeRaTION maNuaL — Rev. #1 (05/12/12) — page 43
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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 (800) 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 2012, 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:
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