Multiquip jwn24hscsl, jwn24htcsl User Manual

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:

www.multiquip.com

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

PN: 23624

PROPOSITION 65 WARNING

Engine exhaust and some of
its constituents, and some dust created
by power sanding, sawing, grinding,
drillingandotherconstructionactivities
contains chemicals known to the State
of California to cause cancer, birth
defects and other reproductive harm.
Some examples of these chemicals are:

Leadfromlead-basedpaints.
Crystallinesilicafrombricks.
Cementandothermasonryproducts.
Arsenicandchromiumfrom chemically
treatedlumber.

Your risk from these exposures varies,
dependingonhowoftenyoudothistype
of work. To reduce your exposure to
these chemicals: work in aALWAYS
well ventilated area, and work with

approved safety equipment, such as

dust masks that are specially designed
to filter out microscopic particles.

PAGE 2 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

SILICOSIS/RESPIRATORY WARNINGS

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.

WARNING

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

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

TABLE OF CONTENTS

NOTICE

Specifications are subject to change without notice.

PAGE 4 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

TRAINING CHECKLIST

Training Checklist

No, Description OK? Date

1

2

3 Fuel system, refueling procedure.

4 Operation of spray and lights.

5

6

7 Emergency stop procedures.

8

9 Maintaining a hover.

10 Maneuvering.

11 Pitching.

12 Matching blade pitch. Twin-Pitch™

Read operation manual

completely.

Machine layout, location of

components, checking of engine

oil levels.

Operation of controls (machine

not running).

Safety controls, safety stop switch

operation.

Startup of machine, pre-heat,

engine choke.

13 Concrete fi nishing techniques.

14 Shutdown of machine.

15 Lifting of machine (lift loops).

16 Machine transport and storage.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 5

DAILY PRE-OPERATION CHECKLIST

Daily Pre-Operation Checklist

1 Engine oil level

2 Condition of blades

3 Blade pitch operation

4 Safety stop switch operation

5 Steering control operation

     

PAGE 6 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

SAFETY INFORMATION

Do not operate or service the equipment before reading

Potential hazards associated with the operation of this

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.

SAFETY MESSAGES

The four safety messages shown below will inform you
about potential hazards that could injure you or others. The
safety messages specifi cally address the level of exposure
to the operator and are preceded by one of four words:

DANGER, WARNING, CAUTION or NOTICE.

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.

CAUTION

equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.

Symbol Safety Hazard

Lethal exhaust gas hazards

Explosive fuel hazards

Burn hazards

Rotating parts hazards

Indicates a hazardous situation which, if not avoided,
COULD result in MINOR or MODERATE INJURY.

NOTICE

Addresses practices not related to personal injury.

Pressurized fluid hazards

Hydraulic fluid hazards

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 7

GENERAL SAFETY

NOTICE

This equipment should only be operated by trained and

Whenever necessary, replace nameplate, operation and

accident due to equipment modifi cations. Unauthorized

recommended by Multiquip for this equipment. Damage

keep

Also, know the phone numbers

fi re department.

SAFETY INFORMATION

CAUTION

 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.

 Avoid wearing jewelry or loose fi tting clothes that may

snag on the controls or moving parts as this can cause
serious injury.

 NEVER operate this equipment when not

feeling well due to fatigue, illness or when
under medication.

 NEVER operate this equipment under the

infl uence of drugs or alcohol.

 ALWAYS clear the work area of any debris, tools, etc.

that would constitute a hazard while the equipment is
in operation.



qualifi ed personnel 18 years of age and older.



safety decals when they become diffi cult read.

 Manufacturer does not assume responsibility for any

equipment modifi cation will void all warranties.

 NEVER use accessories or attachments that are not

to the equipment and/or injury to user may result.

 ALWAYS know the location of the nearest

fi re extinguisher.

 ALWAYS know the location of the nearest

fi rst aid kit.

 ALWAYS know the location of the nearest phone or

a phone on the job site.

of the nearest ambulance, doctor and
This information will be invaluable in the case of an
emergency.

 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.

PAGE 8 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

TROWEL SAFETY



NOTICE

keep the machine in proper running condition.

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.

Association of Equipment Manufacturers (AEM) can be

tank and severely scald any persons in the general area

run engine without an air fi lter or with a dirty air

fi lter. Severe engine damage may occur. Service air fi lter

SAFETY INFORMATION

DANGER

 Engine fuel exhaust gases contain poisonous carbon

monoxide. This gas is colorless and odorless, and can
cause death if inhaled.

 The engine of this equipment requires an adequate free

fl ow of cooling air. NEVER operate this equipment in any
enclosed or narrow area
where free fl ow of the air is
restricted. If the air fl ow is
restricted it will cause injury
to people and property and
serio u s dama g e to t he
equipment or engine.

NEVER operate the equipment in an explosive
atmosphere or near combustible materials. An
explosion or fi re could result causing severe

bodily harm or even death.

WARNING

If applicable, NEVER use your hand to fi nd

hydraulic leaks. Use a piece of wood or
cardboard. Hydraulic fl uid injected into the
skin must be treated by a knowledgable
physician immediately or severe injury or
death can occur.

ALWAYS keep clear of rotating or moving

parts while operating the trowel.

NEVER di sco nne ct an y emerg enc y

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 allow passengers or riders on the trowel during

operation.

 ALWAYS

 Fix damage to machine and replace any broken parts

immediately.

 ALWAYS

 A safety manual for operating and maintenance

personnel of concrete power trowels produced by the

DANGEROUS

GAS FUMES

obtained for a fee by ordering through their website at
www.aem.org.

Order FORM PT-160

ENGINE SAFETY

WARNING

 D O NOT pl ace hands o r fi nge rs in side e ngi ne

compartment when engine is running.

 NEVER operate the engine with heat shields or

guards removed.

 Keep fi ngers, 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

of the trowel.

CAUTION

 NEVER touch the hot exhaust manifold,

muffl er or cylinder. Allow these parts to cool
before servicing equipment.

NOTICE

 NEVER

frequently to prevent engine malfunction.

 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.

 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.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 9

SAFETY INFORMATION

FUEL SAFETY

keep the battery charged. If the battery is not

charge battery if frozen. Battery can explode.

environment to avoid the risk of a dangerous concentration

NEGATIVE battery terminal

keep battery cables in good working condition.

WARNING

DANGER

 DO NOT start the engine near spilled fuel or combustible

fl uids. Fuel is extremely fl ammable and its vapors can
cause an explosion if ignited.

 ALWAYS refuel in a well-ventilated area, away from

sparks and open fl ames.

 ALWAYS use extreme caution when working with

fl ammable liquids.

 DO NOT fi ll the fuel tank while the engine is running

or hot.

 DO NOT overfi ll tank, since spilled fuel could ignite if it

comes into contact with hot engine parts or sparks from
the ignition system.

 Store fuel in appropriate containers, in well-ventilated

areas and away from sparks and fl ames.

 NEVER use fuel as a cleaning agent.

DO NOT smoke a round or ne ar th e

equipment. Fire or explosion could result
from fuel vapors or if fuel is spilled on a
hot engine.

 A LWAYS wear safety glasses when

handling the battery to avoid eye irritation.
The battery contains acids that can cause
injury to the eyes and skin.

 Use well-insulated gloves when picking up

the battery.

 ALWAYS

charged, combustible gas will build up.

 DO NOT

When frozen, warm the battery to at least 61°F (16°C).

 ALWAYS recharge the battery in a well-ventilated

of combustible gases.

 If the battery liquid (dilute sulfuric acid)

comes into contact with clothing or skin,
rinse skin or clothing immediately with
plenty of water.

 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.

BATTERY SAFETY

DANGER

 DO NOT drop the battery. There is a possibility that the

battery will explode.

DO NOT expose the battery to open fl ames,

sparks, cigarettes, etc. The battery contains
combustible gases and liquids. If these
gases and liquids come into contact with
a fl ame or spark, an explosion could occur.

CAUTION

 ALWAYS disconnect the

before performing service on the equipment.

 ALWAYS

Repair or replace all worn cables.

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)

NOTICE

sure the trailer that supports the trowel and the towing

Make sure the hitch and coupling of the towing vehicle

NEVER

tow a trailer with defective hitches, couplings, chains, etc.

Trailer tires should be infl ated to 50 psi cold.

safety

attach trailer’s safety chains to towing

make sure the vehicle and trailer directional,

The maximum speed for highway towing is 55 MPH unless
posted otherwise. Recommended off-road towing is not to

Avoid sudden stops and starts. This can cause skidding,

 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.

SAFETY INFORMATION

vehicle are mechanically sound and in good operating
condition.

 ALWAYS shutdown engine before transporting

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.

 NEVER transport trowel with fl oat pans attached unless

safety catches are used and are specifi cally cleared for
such transport by the manufacturer.

 NEVER hoist the trowel more than three feet off the

ground with fl oat pans attached.

 Before lifting, make sure that the lift loops are not

damaged.

 Always make sure crane or lifting device has been

properly secured to the lift loops of the equipment.

 ALWAYS shutdown engine before transporting.

 NEVER lift the equipment while the engine is running.

 Tighten fuel tank cap securely and close fuel cock to

prevent fuel from spilling.

 Use adequate lifting cable (wire or rope) of suffi cient

strength.



are rated equal to, or greater than the trailer “gross
vehicle weight rating.”

 ALWAYS inspect the hitch and coupling for wear.

 Check the tire air pressure on both towing vehicle and

trailer.
Also check the tire tread wear on both vehicles.

 ALWAYS make sure the trailer is equipped with a

chain.

 ALWAYS properly

vehicle.

 ALWAYS

backup, brake and trailer lights are connected and
working properly.

 DOT Requirements include the following:

• Connect and test electric brake operation.

• Secure portable power cables in cable tray with tie
wraps.



 DO NOT lift machine to unnecessary heights.

 ALWAYS tie down equipment during transpor t by

securing the equipment with rope.

TOWING SAFETY

CAUTION

 Check with your local county or state safety

towing regulations, in addition to meeting

Department of Transportation (DOT)
Safety Towing 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

exceed 15 MPH or less depending on type of terrain.



or jack-knifi ng. Smooth, gradual starts and stops will
improve towing.

 Avoid sharp turns to prevent rolling.

 Trailer should be adjusted to a level position at all times

when towing.

EMISSIONS INFORMATION

This engine has been certifi ed to meet US EPA Evaporative

proper training could damage the equipment or create an

Additionally, modifying the fuel system may adversely affect
evaporative emissions, resulting in fi nes or other penalties.

The emission control label is an integral part of the emission

If a replacement emission label is needed, please contact

 Raise and lock trailer wheel stand in up position when

towing.

 Place chock blocks underneath wheel to prevent rolling

while parked.

 Place support blocks underneath the trailer’s bumper to

prevent tipping while parked.

SAFETY INFORMATION

NOTICE

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.

emissions requirements in the installed confi guration.

 Use the trailer’s swivel jack to adjust the trailer height to

a level position while parked.

ENVIRONMENTAL SAFETY

NOTICE

 Dispose of hazardous waste properly.

Examples of potentially hazardous waste
are used motor oil, fuel and fuel fi lters.

 DO NOT use food or plastic containers to dispose of

hazardous waste.

 DO NOT pour waste, oil or fuel directly onto the ground,

down a drain or into any water source.

Attempting to modify or make adjustments to the engine
emmission system by unauthorized personnel without

unsafe condition.

Emission Control Label

system and is strictly controlled by regulation(s).

The label must remain with the engine for its entire life.

your authorized Honda Engine Distributor.

PAGE 12 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

SPECIFICATIONS/DIMENSIONS

C

A B

Figure 1. Dimensions

Table 1. Trowel Specifications

A–Length – in. (cm) 77.0 (195.6)

B–Width – in. (cm) 39 (99)

C–Height – in. (cm)1 46.75 (118.7)

Weight – lbs. (kgs.) Operating 685 (311.3)

Weight – lbs. (kgs.) Shipping 885 (402.27)

Engine – H.P. 24 (HONDA)

Fuel Tank – gallons (liters) 5 (19.23)

Rotor – RPM (Dry Concrete) 180 Min

Path Width – in. (cm) 75 (191)

Engine Oil Capacity (w/new filter) 2 Quarts (1.9 Liters)

Gear Box Oil Capacity 69 oz. Mobil SCH 634 Iso VG640

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 13

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)

Guaranteed ISO 3744:2010 Based
Sound Power Level in dB(A)

Whole Body Vibration Per ISO 2631-1:1997 +A1:2010

2

∑A(8)

in m/s

92

112

0.15

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/s

1.15 m/s2 ∑A(8).

Table 3. Engine Specifications/Dimensions

Model Honda GX690RTAF Engine

2

∑A(8). The daily exposure limit value is

Type

4 Stroke, Overhead Valve, 90 degree

V-Twin 2 cylinder gasoline engine.

Piston Displacement 40.9 cu.in. (670 cc)

Max. Output 22.1 bhp/3,600 rpm (16.5 KW)

Max. Torque 35.6 lbf-ft at 2,500 rpm

Cooling System Forced Air

Engine Oil Capacity

1.8 qt. (1.7 liters w/oil filter replacement)

1.6 qt. (1.50 liters)

Unleaded gasoline

Fuel

Octane rating of 86 or higher.

Maximum 10% ethanol.

See engine manual for further details.

Fuel Consumption 1.71 gph

Starting System Electric Start/CDI Type Magneto Ignition

Spark Plug Type ZFR5F NGK

Spark Plug Gap 0.028-0.031 in. (0.70 - 0.80 mm)

Length 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)

GENERAL INFORMATION

JWN SERIES RIDE-ON POWER TROWEL
FAMILIARIZATION

The JWN Series Ride-On Power Trowel is designed for the
floating and finishing of concrete slabs.

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.

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.

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.

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.

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.

GEARBOXES

The JWN Series Ride-On Power Trowel uses two separate
gearbox assemblies that are enclosed in rugged cast
aluminum gear cases.

The gearbox casing has a large oil capacity allowing
optimum lubrication to critical points.

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.

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.

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.

ENGINE

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.

CONSTANT VELOCITY JOINTS (CV-JOINTS)

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

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.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 15

COMPONENTS

1. Seat — Engine will not start unless operator is seated.

2. Steering Control Levers — Directs the unit forward,
reverse, left, or right.

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.

5. Light Switch — Turns on three halogen lights. Two
in front, one in rear.

6. Ignition Switch — With key inserted, turn clockwise
to start engine.

7. Hour Meter — Indicates number of hours the engine has run.

8. Choke Control Lever — In cold weather pull this
lever to start engine. After engine warms push knob
all the way in.

9. Fuel Gauge/Filler Cap — Indicates the amount of fuel
in the fuel tank. Remove this cap to add fuel.

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.

10. Fuel Tank — Holds 5 gallons of unleaded gasoline.

11. Left Foot Riser — Operator foot rest pedal.

12. Spray Nozzle — Spray nozzle for retardant.

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.

14. EZ- Mover Boss — Front attachment point for EZ
Mover. Used to move the trowel.

15. Right Front Light — 12 volt halogen lights, used for
night operations.

16. Left Front Light — 12 volt halogen lights, used for
night operations.

15

1

4

9

10

2

8

6

7

1213

14 14

Figure 2. Components – Front

11

3

2

4

16

PAGE 16 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

COMPONENTS

17. Rear Light — The JWN-Series Ride-On Power Trowel
has three 12 volt halogen lights.

18. Lift Loops — Located on both sides of the main frame.
Used to lift the trowel.

19. Retardant Spray Tank — Holds 5 gallons of retardant.

20. Retardant Spray Pump — Delivers retardant to the
spray nozzle.

21. EZ-Mover Boss — Rear attachment point for EZ
Mover. Used to transport the trowel.

22. Right-Side Spider — Consists of trowel arms, blades,
wear plate, and thrust collar.

23. Left-Side Spider — Consists of trowel arms, blades,
wear plate, and thrust collar.

24. Document Box — Contains all product documentation.

25. Battery — Provides +12V DC power to the electrical
system.

26. Belt Guard — Encloses drive belt used in conjunction
with clutch.

27. Charcoal Canister — Charcoal activated system
that absorbs or traps fuel vapors. Basic component of
evaporative emissions control systems

28. Safety Kill Switch — Shuts down engine when seat
is not occupied by operator.

25

22

28

17

18

26

RETARDANT ONLY

19

Figure 3. Components – Rear

18

24

2121

27

20

25

23

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 17

BASIC ENGINE

1

2

9

8

14

13

5

12

6

7

3

4

10

Figure 4. Engine Components

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.

1. Muffler — Used to reduce noise and emissions.

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 operate
the engine with the muffler removed.

2. Air Cleaner — Prevents dirt and other debris from
entering the fuel system. Unsnap air filter cover to gain
access to filter element.

3. Choke Knob — Used in the starting of a cold engine
or in cold weather conditions. The choke enriches the
fuel mixture.

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.

ENGINE FUEL ONLY

11

7. Throttle Lever — Controlled by accelerator pedal,
increases or decreases engine RPM.

8. Oil Filler Cap — Remove to add engine oil.

9. Oil Dip Stick — Remove to check amount and
condition of oil in crankcase.

10. Starter — Starts engine when ignition key is rotated
to the "ON" position.

11. Oil Drain Plug — Remove to drain crankcase oil.

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.

14. Fuel Filler Cap — Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tightened
securely. DO NOT overfill.

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.

PAGE 18 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

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.

NOTICE

The new trowel cannot be placed into service until the
setup installation instructions are completed.

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.

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:

1. Remove the bolts from the plastic bag tied to the
control towers.

2. Remove all protective wrapping and straps from the
control handles.

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.

SEAT ASSEMBLY

The seat is not installed on the trowel for shipping purposes.
To attach the seat perform the following:

1. Remove the seat from the protective wrapping.

2. Insert studs on bottom of seat through holes in the
mounting plate.

3. Install and tighten the provided nuts.

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.

CAUTION

Use all safety precautions specified by the battery
manufacturer when working with the battery. Reference
the safety section of this manual for additional information.

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.

NOTICE

Some models are equipped with adjustable height
ha ndles. Adjust the height by p lacing 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

INSPECTION

The following section is intended as a basic guide to the ride-on
trowel operation, and is not to be considered a complete guide
to concrete finishing. It is strongly suggested that all operators
(experienced and novice) read “Slabs on Grade ” published by
the American Concrete Institute, Detroit Michigan.

DO NOT use your ride-on power trowel until this section is
thoroughly understood.

CAUTION

Failure to understand the operation of the trowel could
result in severe damage to the machine or personal injury.

ENGINE OIL LEVEL

ALWAYS check engine oil before each use.

1. Pull the engine oil dipstick (Item 2, Figure 5) from its holder.

2. Determine if engine oil is low.

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..

NOTICE

Gearbox oil capacity is approximately 69 oz when
empty.

DRAIN

PLUG

FILL/LEVEL

CHECK PLUG

Figure 7. Gearbox Oil Plugs/Sight Glass

GEARBOX

VENT

Figure 5. Engine Oil Dipstick

NOTICE

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

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.

DANGER

Handle fuel safely. Motor fuels are highly
flam mable and can be dangerous if
mis han dled . 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.

AMBIENT TEMPERATURE

Figure 6. Recommended Viscosity Grades

Figure 8. Fuel Gauge

PAGE 20 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

IMPORTANT INFORMATION BEFORE YOU START

OPERATION

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.

WARNING

NEVER disable or disconnect the safety stop switch. It is

provided for the operator's safety and injury or death may
result if it is disabled, disconnected or improperly maintained.

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.

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.

CHOKE

KNOB

CLOSED

OPEN

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).

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.

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
the switch fails to shut down the engine, turn off the engine
with the key switch and repair the safety stop switch. See
the Troubleshooting section for possible causes.

Figure 9. Blade Speed Control Foot Pedal

STARTING THE ENGINE

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.

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.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 21

IGNITION

KEY

START

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.

OPERATION

Steering

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.

1. Push both the left and right control levers forward. See
Figure 12.

LEFT CONTROL LEVER

FORWARD DIRECTION

RIGHT CONTROL LEVER

Figure 12. Left and Right Control Levers

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.

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.

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.

6. Pull both the left and right joysticks backward and
repeat steps 3 through 5 while substituting the word
reverse for forward.

Table 4. Control Lever Directional Positioning

CONTROL JOYSTICK

& DIRECTION

Move

LEFT Joystick

FORWARD

Move Joystick

LEFT

BACKWARD

Move Joystick

RIGHT

FORWARD

Move Joystick

RIGHT

BACWARD

Move Joysticks

BOTH

FORWARD

Move Joysticks

BOTH

BACKWARD

Move Joysticks

BOTH

to the RIGHT

Move Joysticks

BOTH

to the LEFT

Causes only the
right side of the
ride-on trowel to
move forward.

Causes only the
right side of the
ride-on trowel to
move backward.

Causes the ride-on trowel

Causes the ride-on trowel

Causes the ride-on trowel

Causes the ride-on trowel

RESULT

Causes only the
left side of the
ride-on trowel to
move forward.

Causes only the
left side of the
ride-on trowel to
move backward.

to move forward in

a straight line.

to move backard in

a straight line.

to move to the right.

to move to the left.

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.

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.

PAGE 22 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

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.

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.

WARNING

Accidental starts can cause severe injury or
death.

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.

Yearly (500-600 Hours)

1. Check and replace if necessary the arm bushings, and
thrust collar bushings, shaft seals and belts.

2. Check pitch control cables for wear.

3. Replace gearbox lubricant.

Air Cleaner (Daily)

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.

1. Release the four latch tabs (Figure 13) from the air
cleaner cover, and remove the cover.

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.

Weekly (30-40 Hours)

1. Relube arms, thrust collar and steering links.

2. Replace blades if necessary.

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.)

Monthly (100-125 Hours)

1. Remove, clean, reinstall and relube the arms and thrust
collar. Adjust the blade arms.

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.)

Figure 13. Air Cleaner Components

2. Remove the foam filter from the cover.

3. Remove the paper filter from the air cleaner case.

4. Inspect both air filter elements, replace them 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.

6. NEVER try to brush off dirt; brushing will force dirt
into the fibers. If the paper element is excessively dirt,
replace element.

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.

8. Wipe dirt from the inside of the air cleaner body and cover,
using a moist cloth. Be careful not to let any dirt or debris
enter the air chamber that leads to the carburetor.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 23

9. Reinstall the foam air filter element in the air cleaner

SEAL

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.

MAINTENANCE

Changing Engine Oil (100 Hours)

1. Change the engine oil after the first 20 hours of use,
then change every 6 months or 100 hours.

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.

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).

Oil Filter (200 Hours)

1. Replace the engine oil filter (Figure 14) every 200 hours.

OIL

FILTER

Figure 15. Honda Fuel Filter

Oil And Fuel Lines

 Check the oil and fuel lines and connections regularly

for leaks or damage. Repair or replace as necessary.

 Replace the oil and fuel lines every two years to maintain

the line's performance and flexibility.

ENGINE TUNE-UP

 See your engine manual for specific information on tuning

up your engine, checking and gaping the spark plugs, etc.

NOTICE

See the engine manual supplied with your machine
for appropriate engine maintenance schedule and
troubleshooting guide for problems.

LONG TERM STORAGE

 Remove the battery.

Figure 14. Oil Filter

2. Be sure to coat the seal of the new oil filter with clean
engine oil.

Fuel Filter (200 Hours)

1. Replace the engine fuel filter (Figure 15) every 200 hours.

PAGE 24 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

 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.

 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.

MAINTENANCE

NOTICE

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.

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.

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

DO NOT attempt to insert hands or tools into the

belt area while the engine is running. NEVER run
the engine with the safety guards removed. Keep
fingers, hands, hair and clothing away from all
moving parts to prevent bodily injury.

BELT GUARD REMOVAL

1. To gain access to the drive belt, remove Drive Belt
Guard (Figure 16).

DRIVE BELT

GUARD

REMOVE

8 PLACES

Figure 16. Drive Belt Gurad Removal

WARNING

DO NOT remove the drive belt guard cover until

the muffler has cooled. Allow the entire trowel
to cool down before performing this procedure.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 25

SPARE DRIVE BELT REMOVAL
(USING REPLACEMENT DRIVE BELT)

MAINTENANCE

The JWN-SERIES Ride-On Power Trowel 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.

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.

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.

REMOVE

SPARE DRIVE

BELT HOLDER

SPARE

DRIVE BELT

2 PLACES

SPARE

DRIVE BELT

LOWER DRIVE

PULLEY

CV-JOINT

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.

PULL UPWARDS

AND TOWARDS

REAR OF TROWEL

DRIVE BELT

REMOVE

LEFT-SIDE
GEARBOX

ADAPTER PLATE

Figure 17. Spare Belt Removal

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.

LOWER
PULLEY

Figure 19. Spare Drive Belt Placement

(Lower Pulley)

PAGE 26 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

MAINTENANCE

6. Place spare drive belt onto clutch as shown in Figure

20

CLUTCH

GROOVES

DRIVE

BELT

Figure 20. Spare Drive Belt Placement (Clutch)

7. Reinstall belt guard assembly.

STARTING THE TROWEL/TESTING

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.

CAUTION

The engine’s exhaust contains harmful emissions.
ALWAYS have adequate ventilation when operating.
Direct exhaust away from nearby personnel.

2. Run machine, bringing throttle up so clutch engages.

Cycle the engine from idle to full throttle twice, and shut
off engine. Remove key.

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.

REMOVE

3 PLACES

GAP

LEFT-SIDE
GEARBOX

CV-JOINT

COUPLER

Figure 21. CV-Joint Removal

3. Once the CV-joint has been separated from the left­side gearbox coupler, push the CV-joint inward so that
a gap (Figure 21) exists between the gearbox coupler
and CV-joint.

4. Slide new spare drive belt between gearbox coupler
and CV-joint.

SPARE DRIVE
BELT HOLDER

(INSTALL)

LEFT-SIDE
GEARBOX

ADAPTER PLATE

COUPLER

INSTALL

2 PLACES

CV-JOINT

SPARE

DRIVE BELT

SPARE DRIVE BELT INSTALLATION

CV-joint Assembly Removal (left-side)

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

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.

MAINTENANCE

CV-JOINT ASSEMBLY INSTALLATION (LEFT-SIDE)

1. Apply a thin coat of RVT silicone to mating surfaces of
the CV-joint (Figure 23) and left-side gearbox coupler.

INSTALL

3 PLACES

RTV

SILICONE

LEFT-SIDE
GEARBOX

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.

CV-JOINT

COUPLER

HOW IT WORKS

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
driven or secondary sheaves. The opening and closing of these
sheaves creates a ratio variation… hence CVT or Continuously
Variable Transmission.

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.

Those systems also require the stationar y 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.

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)

Blade Pitch

OPERATING POSITION

DISENGAGED
(ONE SIDE)

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.

MAINTENANCE

Twin Pitch

TM

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.

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.

Figure 24. Pitch Towers

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 29

MAINTENANCE

Arm

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.

 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?

 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?

Spider Plate

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.

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.

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.

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.

Trowel Lever

(Finger)

Trowel

Blade Pitch

Adjustment Bolt

Figure 25. Blade Pitch Adjustment Bolt

The easiest and most consistent way to make adjustments
on the trowel arm fingers is to use the Trowel Arm Adjustment
Fixture (P/N 9177). It comes with all the hardware necessary
to properly accomplish this maintenance and instructions
on how to utilize this tool.

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.

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. 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.

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.

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)

MAINTENANCE

GEARBOX

SURFACE

BLADE

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.

Trowel Arm Adjustment Procedure

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.

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.

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:

• 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.

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.

ADJUSTMENT

INCORRECT

ALIGNMENT

“DISHED” EFFECT ON
FINISHED CONCRETE

BOLT

SURFACE

LOWER

WEAR
PLATE

Figure 26. Worn Arm Bushings

Figure 27 illustrates the "correct alignment " for a spider
plate (as shipped from the factory).

CORRECT ALIGNMENT

BLADES ARE FLAT

Figure 27. Correct Spider Plate Alignment

ARM

MOUNTING

BAR

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

• Does the guard ring “rock up and down” relative to
the ground?

new)?

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 31

MAINTENANCE

Trowel Arm 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)

2. Remove the trowel arm from the spider plate.

SPIDER

PLATE

ZERK

FITTING

Figure 28. Removing Zerk Grease Fitting

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.

Trowel Blade Removal

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.

Figure 30. Trowel Blades

2. Wire brush any build-up of concrete from all six sides
of the trowel arm. Repeat this for the remaining three
arms.

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

PAGE 32 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

MAINTENANCE

Checking Trowel 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 31 and Figure 32.

Blade

Attachment

Bolt Hole

Lever Mounting Slot

(Left Arm Shown)

Trowel Arm

Round Shaft Section

Roll Pin

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.

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 32) .

(One of Three)

Hole

Trowel Arm

Hexagonal (Hex)

Shaft Section

Flat of

Hexagonal

Shaft

(Top of Arm)

Trowel

Arm

Flat Test

Surface

Trowel Arm Adjustment

1. Locate the trowel arm adjustment tool (Figure 33) P/N

9177.

Adjustment

Bolt

Locking

Nut

“Distance”

Fixture

Arm

Figure 33. Trowel Arm Adjustment Tool

(Side View)

2. Ensure the fixture arm is in the proper setting (up or down)
for your trowel arm rotation as shown in Figure 34.

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).

A

Feeler Gauge

(.005 in. / 0.127 mm)

Feeler Gauge

(.004 in. / 0.10 mm)

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.

4. If the trowel arm is found to be uneven or bent, replace
the trowel arm.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 33

B

Figure 34. Trowel Arm Adjustment Setup

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.

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.

Trowel Arm

Arm

Shim

Locking

Bolts

Figure 35. Trowel Arm Adjustment Fixture

Lever

Trowel Arm
Adjustment

Fixture

Fixture

Arm

Adjustment

Bolt

Distance = .010 in.

Adjustment

Bolt

Components

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.

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.

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.

5. Make sure that the spring tensioner is in the correct
position to exert tension on the trowel 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.

7. Lock trowel arms in place by tightening the hex head
bolt with zerk grease fitting and jam nut.

8. Re-install the blades onto the trowel arms.

9. Install stabilizer ring onto spider assembly.

10. Lubricate all grease points (zerk fittings) with premium
"Lithium 12" based grease, conforming to NLG1 Grade
#2 consistency.

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

PAGE 34 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

MAINTENANCE

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.

WARNING

Lifting/Crush Hazard. DO NOT lift trowel with
pans attached.

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.

Knob,Tie-Down

Z-Clip Pans

Tie-Down,

Blade

Z-Clip Pan

Blade

Assembly

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.

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.

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:

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.

2. Remove battery and bring to appropriate facility for lead
reclamation. Use safety precautions when handling
batteries that contain sulfuric acid, (Reference Setup
Section).

3. The remainder can be brought to a salvage yard or
metal reclamation facility for further dismantling.

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

F1

15A

FUSE

BLOCK

3A

F2

F3

F4

P3

J3

K1

COMMON

K1-1 NC

87A

30

K1-1 NO

87

4

3

2

1

5

4

3

2

1

5

Z2

85

86

MAIN

RELAY

CONTROL

PANEL GND

NC

ST

LO

BATT.

GND.

IGN.

P2-A

B

Y

L

B/Y

B

Y

L

B/Y

P2-B

Z1

HOUR

METER

FEMALE

MALE

B/Y

CONTROL BOX

P1-A

B

Y

L

B/Y

B

Y

L

B/Y

P1-B

FEMALE

MALE

WHITEMAN HARNESS

HONDA HARNESS

FUEL CUT-OFF

SOLENOID

IGNITION

SWITCH

J1

VOLTAGE

REGULATOR

RECTIFER

GR

GR

W/L
B/Y

W
B

P1

20 AMP

CHARGE COIL

GR

BLK

G

GRN

G (GRN)

L (BLUE)

T1

T5

CHASSIS

GND.

M

CHASSIS

GND.

BATTERY

POSITIVE

NEGATIVE

CHASSIS

GND.

B/W

+12VDC

+12VDC

K1

MAIN RELAY

COIL

30 AMP.

FUSE

W

B/Y (BLK/YEL)

Y (YEL)

+12VDC

+12VDC

T13

GR

GR
GR

NC

E2

GND.

BLK

WHT

BLK/YEL

GRAY

GRAY

T14

B/Y (BLK/YEL)

B/Y

B

+12VDC

NC

NC

+12VDC

T19

T12

T11

T18

T9

T10

CONTROL

PANEL GND

GND.

GND.

W11

W10

W9

W3

A

W4

A

W5

A

(W15A)

W7

A

W17

A

W2

A

W1

A

W14

A

W6

A

W13

A

W16

A

W6

A

W16

A

W25

A

W22

A

W12

A

W18

A

W8

A

STARTER

MOTOR

1

A

2

3

8

4

7

T4

B

C

D

8

15

5

14

B/Y

16

17

18

5

WIRING DIAGRAM

Figure 37. Wiring Diagram

PAGE 36 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

W16

A

W6

A

W25

A

W22

A

Y

L

Y

B

Y

B

T16

W20

A

Z3

IGNITION

COIL (RIGHT)

IGNITION

COIL (LEFT)

OIL LEVEL

SWITCH

CONTROL

PANEL GND.

T20

UNIT

UNIT

LIGHT

SWITCH

1

P

T21

W27

A

W23

A

MAIN PANEL

HARNESS
P/N 23540

2

CHASSIS

GND.

CHASSIS

GND.

P4

4

2

1

3

W26

A

5

E

J1

4

2

1

3

Z4

F

T17

W2

A

BLACK/WHITE 16 AWG

W3

A

BLUE 18 AWG

W1

A

WHITE 16 AWG

W5

A

BLACK/YELLOW 18 AWG

W6

A

BLACK/ORANGE 16 AWG

W4

A

YELLOW 18 AWG

W8

A

BLACK 16 AWG

W9

A

RED 16 AWG

W7

A

RED 16 AWG

W11ARED 16 AWG
W12ARED 12 AWG

W10ARED 16 AWG

W14ABLACK/YELLOW 16 AWG
W15ABLACK/YELLOW 18 AWG

W13

A

RED 12 AWG

W17ARED 12 AWG
W18ABLACK 16 AWG

W16ABLACK/ORANGE 18 AWG

W20ABLACK/YELLOW 16 AWG
W21ABLACK/GREEN 16 AWG

W19ABLACK 12 AWG

W23ABLACK/YELLOW 16 AWG
W24ABLACK/ YELLOW 16 AWG

W22ARED/GREEN 16 AWG

W25ABLACK/YELLOW 16 AWG

W27ARED/YELLOW 16 AWG
W28ARED/YELLOW 16 AWG

W26ARED/YELLOW 16 AWG

W2

B

BLACK/ORANGE 16 AWG

W3

B

RED YELLOW 16 AWG

W1

B

BLACK/ORANGE 16 AWG

W4

B

BLACL/YELLOW 16 AWG

W3

C

RED/GREEN 16 AWG

W1

C

RED/YELLOW 16 AWG

W5

C

RED/YELLOW 16 AWG

W6

C

BLACK/YELLOW 16 AWG

W4

C

BLACK/GREEN 16 AWG

W8

C

RED/YELLOW 16 AWG

W9

C

RED/GREEN 16 AWG

W7

C

RED 16 AWG

W6

C

BLACK/YELLOW 16 AWG

23540

23541

23542

COLOR

BODY/STRIPE

HARNESS

DWG.

WIRE

REF.

WIRE

GAGE

SEAT FRAME

HARNESS
P/N 23541

W22

A

W21

A

W28

A

W24

A

MAIN PANEL

HARNESS
P/N 23540

P5

4

2

1

3

5

6

G

MAIN FRAME

HARNESS
P/N 23542

J1

4

2

1

3

5

6

H

W1

C

W2

C

W3

C

+12VDC

Z1

W4

C

+12VDC

W9

C

Z2

W1

B

W2

B

W3

B

W4

B

W5

C

W6

C

W8

C

W7

C

P1

1

2

P2

1

2

P2

2

1

J2

2

1

P3

2

1

P1

2

1

N

M

L

K

J1

1

2

J2

2

1

J2

2

1

P2

2

1

J3

2

1

J1

2

1

IG

BAT LO ST

E

OFF

ON

ST

COMBINATION SWITCH

CONTINUITY

I

J

RIGHT FRONT

LIGHT

1

REAR LIGHT

LEFT FRONT

LIGHT

1

SEAT

SWITCH

DS2

DS3

DS1

SPRAY

SWITCH

SPRAY

PUMP

MOTOR

2

GND.

GND.

GND.

2

GND.

9

10

12

13

19

20

11

WIRING DIAGRAM

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 37

WIRING DIAGRAM COMPONENT LOCATOR

1

A

Y L

L Y

B/Y

B/Y

B

B

4

GND.

8

7

D

C

12

2

9

3

5

10

I

6

11

L

P/N36099

G

H

15

L Y

B

B/Y

B

16

18

17

14

M

K

13

G

RETARDANT ONLY

NOTES:

REFERENCE DESIGNATORS E THRU F NOT SHOWN.

1

LOCATION MUST BE TRACED THROUGH HARNESS.

REF.

CONNECTOR FUNCTION

DES.

19

J

20

N

Y L

A

B/Y

B

L Y

B

C

1

3

5

D

E

F

G

H

I

J

K

L

2

4

3 2
4 1

2 3

1 4

4

3

5

2

6

1

3

4

2

5

1

6

2

1

1 2

1 2

1 2

ENGINE INTERFACE CTRL. B0X SIDE

B

ENGINE INTERFACE ENGINE SIDE

B/Y

VOLTAGE REGULATOR/RECTIFIER

MAIN RELAY

MAIN PANEL HARNESS P/N 23540 (P4)

1

MATES WITH SEAT FRAME HARNESS
P/N 23541 (J1)

SEAT FRAME HARNESS P/N 23541 (J1)

1

MATES WITH MAIN PANEL HARNESS
P/N 23540 (P4)

MAIN PANEL HARNESS P/N 23540 (P5)
MATES WITH MAIN FRAME HARNESS
P/N 23542 (J1)

MAIN FRAME HARNESS P/N 23542 (J1)
MATES WITH MAIN PANEL HARNESS
P/N 23540 (P5)

SEAT SWITCH

REAR LIGHT

LEFT FRONT LIGHT

RIGHT FRONT LIGHT

Figure 38. Wiring Component Locator

M

1 2

N

SPRAY SWITCH

SPRAY PUMP MOTOR

1

2

PAGE 38 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

Symptom Possible Problem Solution

Diffi cult to start, fuel is available, but no spark
at spark plug.

Diffi cult to start, fuel is available, and spark is
present at the spark plug.

Diffi cult to start, fuel is available, spark is
present and compression is normal.

Diffi cult to start, fuel is available, spark is
present and compression is low.

No fuel present at carburetor.

TROUBLESHOOTING

Troubleshooting (Engine)

Spark plug bridging? Check gap, insulation or replace spark plug.

Carbon deposit on spark plug? Clean or replace spark plug.

Short circuit due to defi cient spark plug
insulation?

Improper spark plug gap? Set to proper gap.

Fuel reaching carburetor? Check fuel line.

Water in fuel tank? Flush or replace fuel tank.

Fuel fi lter clogged? Replace fuel fi lter.

Stuck carburetor? Check fl oat mechanism.

Spark plug is red? Check transistor ignition unit.

Spark plug is bluish white?

No spark present at tip of spark plug?

No oil? Add oil as required.

Oil pressure alarm lamp blinks upon starting?
(if applicable)

ON/OFF switch is shorted? Check switch wiring, replace switch.

Ignition coil defective? Replace ignition coil.

Improper spark gap, points dirty? Set correct spark gap and clean points.

Condenser insulation worn or short circuiting? Replace condenser.

Spark plug wire broken or short circuiting? Replace defective spark plug wiring.

Wrong fuel type?

Water or dust in fuel system? Flush fuel system.

Air cleaner dirty? Clean or replace air cleaner.

Choke open? Close choke.

Suction/exhaust valve stuck or protruded? Reseat valves.

Piston ring and/or cylinder worn? Replace piston rings and/or piston.

Cylinder head and/or spark plug not tightened
properly?

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.

Fuel cock does not open properly?

Fuel fi lter/lines clogged? Replace fuel fi lter.

Fuel tank cap breather hole clogged? Clean or replace fuel tank cap.

Air in fuel line? Bleed fuel line.

Check spark plug insulation, replace if worn.

If insuffi cient compression, repair or replace
engine. If injected air leaking, correct leak. If
carburetor jets clogged, clean carburetor.

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.

Check automatic shutdown circuit, "oil
sensor". (if applicable)

Flush fuel system, and replace with correct
type of fuel.

Torque cylinder head bolts and spark plug.

Apply lubricant to loosen fuel cock lever,

replace if necessary.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 39

Symptom Possible Problem Solution

Weak in power, compression is proper and
does not misfi re.

Weak in power, compression is proper but
misfi res.

Engine overheats.

Rotational speed fl uctuates.

Recoil starter malfunctions. (if applicable)

Starter malfunctions.

Burns too much fuel.

Exhaust color is continuously "white".

Exhaust color is continuously "black".

Will not start, no power with key "ON". (if
applicable)

TROUBLESHOOTING

Troubleshooting (Engine) - continued

Air cleaner dirty? Clean or replace air cleaner.

Improper level in carburetor? Check fl oat adjustment, rebuild carburetor.

Defective spark plug? Clean or replace spark plug.

Improper spark plug? Set to proper gap.

Water in fuel system?

Dirty spark plug? Clean or replace spark plug.

Ignition coil defective? Replace ignition coil.

Spark plug heat value incorrect? Replace with correct type of spark plug.

Wrong type of fuel? Replace with correct type of fuel.

Cooling fi ns dirty? Clean cooling fi ns.

Intake air restricted?

Oil level too low or too high? Adjust oil to proper level.

Governor adjusted incorrectly? Adjust governor.

Governor spring defective? Replace governor spring.

Fuel fl ow restricted? Check entire fuel system for leaks or clogs.

Recoil mechanism clogged with dust and

dirt?

Spiral spring loose? Replace spiral spring.

Loose, damaged wiring?

Battery insuffi ciently charged? Recharge or replace battery.

Starter damaged or internally shorted? Replace starter.

Over-accumulation of exhaust products?

Wrong spark plug?

Lubricating oil is wrong viscosity? Replace lubricating oil with correct viscosity.

Worn rings? Replace rings.

Air cleaner clogged? Clean or replace air cleaner.

Choke valve set to incorrect position? Adjust choke valve to correct position.

Carburetor defective, seal on carburetor

broken?

Poor carburetor adjustment, engine runs too

rich?

ON/OFF device not activated ON? Turn on ON/OFF device.

Battery disconnected or discharged?

Ignition switch/wiring defective? Replace ignition switch. Check wiring.

Flush fuel system and replace with correct
type of fuel.

Clear intake of dirt and debris. Replace air
cleaner elements as necessary.

Clean recoil assembly with soap and water.

Ensure tight, clean connections on battery

and starter.

Check and clean valves. Check muffl er and

replace if necessary.

Replace spark plug with manufacturer's
suggested type.

Replace carburetor or seal.

Adjust carburetor.

Check cable connections. Charge or replace

battery

PAGE 40 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

Symptom Possible Problem Solution

Engine running rough or not at all.

Safety stop switch not functioning.

Trowel bounces, rolls concrete, or makes uneven

swirls in concrete.

Machine has a perceptible rolling motion while

running.

TROUBLESHOOTING

Troubleshooting (Ride-On Mechanical Trowel)

Stop switch malfunction?

Fuel?

Ignition?

Bad contacts? Replace switch.

Loose wire connections? Check wiring. Replace as necessary.

Other problems? Consult engine manufacturer’s manual.

Blades?

Pitch Adjustment?

Bent trowel arms?

Trowel arm bushings?

Thrust collar?

Thrust collar bushing?

Thrust bearing worn?

Main shaft?

Yoke?

Blade Pitch?

Make sure that the stop switch is functioning when the

operator is seated. Replace switch if necessary.

Look at the fuel system. Make sure there is fuel being

supplied to the engine. Check to ensure that the fuel

fi lter is not clogged.

Check to ensure that the ignition switch has power and

is functioning correctly.

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.

Check that all blades are set at the same pitch angle

as measured at the spider. A fi eld adjustment tool

is available for height adjustment of the trowel arms

(contact Parts Department).

Check the spider assembly for bent trowel arms. If one

of the arms is even slightly bent, replace it immediately.

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.

Check the fl atness 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.

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.

Check to make sure that both fi ngers of the yoke press

evenly on the wear cap. Replace yoke as necessary.

Check to ensure that each blade is adjusted to have the

same pitch as all other blades. Adjust per maintenance

section in manual.

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 41

TROUBLESHOOTING

Troubleshooting (Ride-On Mechanical Trowel) - continued

Symptom Possible Problem Solution

Check all electrical connections in the lighting circuit.

Wiring?

Lights (optional) not working.

Retardant spray (optional) not working.

Steering is unresponsive.

Operating position is uncomfortable. Seat adjusted for operator? Adjust seat with lever located on the front of the seat.

Power head on Electric Pitch (optional) not

working.

Linkage on Twin Pitch not working.

Clutch slipping or sluggish response to engine

speed change.

Lights?

Bad switch?

Bad fuse? Check fuse. Replace fuse if defective.

Retardant? Check retardant level in tank. Fill tank as required.

Wiring?

Bad switch?

Bad spray pump?

Bad fuse? Check fuse. Replace fuse if defective.

Blade speed out of adjustment? See section on blade speed adjustment.

Steering linkage out of adjustment?

Worn components?

Broken or loose parts?

Wiring?

Switch?

Crank handles?

Broken part? Replace all broken parts immediately.

Worn belts? Replace belt.

Clutch out of adjustment?

Worn or defective clutch parts? Replace parts as necessary.

Worn bearings in gearbox?

Verify wiring is in good condition with no shorts. Replace

defective wiring or components immediately.

If +12VDC is present at light fi xture connector when light

switch is activated and light does not turn on, replace

light bulb.

Check the continuity of light switch. Replace light switch

if defective.

Check all electrical connections in the spray pump

circuit. Verify wiring is in good condition with no shorts.

Replace defective wiring or components immediately.

Check the continuity of both left and right spray switches

(palm handles). Replace spray switch if defective..

If +12VDC is present at pump connector when spray

switch is activated and pump does not operate, replace

spray pump.

Adjust the connecting linkage found at the base of the

handle. Contact your MQ fi eld service manager for

instructions.

Check for wear of steering bearings and linkage

components. Replace if necessary.

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.

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.

Check the continuity of the switch. If switch is

malfunctioning, replace immediately.

Make sure that both crank handles are pushed down as

far as possible to ensure that the linkage is engaged.

Adjust per instructions in maintenance section of this

manual.

Rotate input shaft by hand. If shaft rotates with diffi culty,

check the input and output shaft bearings. Replace as

necessary.

Verify that the gearbox shaft rotates when the input shaft

PAGE 42 — JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12)

NOTES

JWN-SERIES RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #1 (05/12/12) — PAGE 43

OPERATION MANUAL

HERE’S HOW TO GET HELP

© COPYRIGHT 2012, MULTIQUIP INC.

Multiquip Inc
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This manual

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in this publication at any time without notice and without incurring any obligations.

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NUMBER ON-HAND WHEN CALLING

United StateS

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Contact: [e-mail]

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310-537-3700

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