Multiquip JTN User Manual

OPERATION AND PARTS MANUAL

JTN

RIDE-ON TROWEL

RIDE-ON POWER TROWEL

MODEL #
SERIAL #

© COPYRIGHT 2004, MULTIQUIP INC.

Revision #5 (08/03/06)

MULTIQUIP INC

18910 WILMINGTON AVE. 800-427-1244
CARSON, CALIFORNIA 90746 FAX: [phone]
310-537-3700
800-421-1244 800-478-1244
FAX: [phone] FAX: [phone]

E-mail:[e-mail] • www:multiquip.com

Atlanta • Boise • Dallas • Houston • Newark
Montreal, Canada • Manchester, UK
Rio De Janiero, Brazil • Guadalajara, Mexico

..

. PARTS DEPARTMENT:

..

SERVICE DEPARTMENT/TECHNICAL ASSISTANCE:

P/N 11261

HERE'S HOW TO GET HELP

PLEASE HAVE THE MODEL AND SERIAL

NUMBER

MULTIQUIP’S MAIN PHONE NUMBERS

800-421-1244 FAX: [phone]
310-537-3700

PARTS DEPARTMENT

800-427-1244 FAX: [phone]
310-537-3700 FAX: [phone]

MAYCO PARTS

800-306-2926 FAX: [phone]
310-537-3700 FAX: [phone]

SERVICE DEPARTMENT

800-478-1244 FAX: [phone]
310-537-3700

MQ POWER SERVICE DEPARTMENT

800-835-2551 FAX: [phone]

ON-HAND

WHEN CALLING

310-537-3700

TECHNICAL ASSISTANCE

800-478-1244 FAX: [phone]

WARRANTY DEPARTMENT

800-421-1244, EXT. 279 FAX: [phone]
310-537-3700, EXT. 279

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 3

JTN RIDE-ON TROWEL— TABLE OF CONTENTS

MQ WHITEMAN JTN RIDE-ON
POWER TROWEL

Here's How to Get Help ............................................ 3

Table of Contents ...................................................... 4

Training Checklist ...................................................... 5

Daily Pre-Operation Checklist ................................... 6

Parts Ordering Procedures ....................................... 7

Safety Message Alert Symbols ................................. 8

Rules For Safe Operation .................................... 9-12

Operation and Safety Decals .................................. 13

Specifications (Trowel) ............................................ 14

Specifications (Engine) ........................................... 15

Engine Components (Honda) ................................. 16

Engine Components (Vanguard) ............................ 17

General Information ................................................ 18

Controls and Indicators (Front) ............................... 20

Controls and Indicators (Rear) ............................... 21

New Machine Set-up Instructions ........................... 22

Initial Start-up ..................................................... 23-25

Maintenance ...................................................... 26-32

Troubleshooting (Trowel) ................................... 33-34

Troubleshooting (Engine) ...................................35-36

Explanation od Code In Remarks Column.............. 37

Suggested Spare Parts ........................................... 38

4-Blade Spider Assembly (Left-Side) ................. 76-77

4-Blade Spider Assembly (Right-Side) .............. 78-79

Blades and Adjustment Fixture Assembly ......... 80-81

Twin Pitch Handle Assembly (RT/LT) .................82-83

Twin Pitch Tower Assembly (RT/LT) ................... 84-85

Twin Pitch Miter Box Assembly .......................... 86-87

Main Frame Assembly ....................................... 88-89

Seat Frame Assembly ........................................90-91

Retardant Spray Tank Assy.
Retardant Spray Tank Assy.

S/N30058 & Below .. 92-93
S/N30059 & Above.. 94-95

Foot Pedal Assembly ......................................... 96-97

Throttle/Foot Pedal ............................................ 98-99

Battery Assembly ........................................... 100-101

Lights Assembly .............................................102-103

Front Panel Assembly (Vanguard) .................104-105

Front Panel Assembly (Honda)) ..................... 106-107

E-Z Mover & Lift Handle Assembly ................108-109

Wiring Diagram, Vanguard .............................110-111

Wiring Diagram, Honda..................................112-113

Terms and Conditions of Sale ............................... 114

COMPONENT DRAWINGS

Nameplate and Decals....................................... 40-41

Vanguard Engine and Clutch Assembly............. 42-43

Honda Engine and Clutch Assembly ................. 44-45

Drive Assembly .................................................. 46-47

Steering Assy. (LS) S/N 43489 & Below............. 48-49

Steering Assy. (RS) S/N 43489 & Above ............ 50-51

Steering Assy. (LS) S/N 43490-46645 ...............52-53

Steering Assy. (RS) S/N 43490-46645 ............... 54-55

Steering Assy. (LS) S/N 46646~......................... 56-57

Steering Assy. (RS) S/N 46645-61579 ............... 58-59

Steering Assist Assy. S/N 61580 & Above..........60-63

Gearbox Pivot Assembly .................................... 64-65

Gearbox Assembly (Right-Side) ........................ 66-69

Gearbox Assembly (Left-Side) ........................... 70-73

Thrust Bearing Kit .............................................. 74-75

PAGE 4 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

NOTE

Specifications and
part numbers are
subject to change
without notice.

JTN RIDE ON TROWEL — TRAINING CHECKLIST

TRAINING CHECKLIST

This checklist will lists some of the minimum requirements for machine maintenance and operation. Please feel free to detach it and
make copies. Use this checklist whenever a new operator is to be trained or it can be used as a review for more experienced
operators.

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Operator _________________________________________ Trainee __________________________________________
COMMENTS:

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 5

JTN RIDE ON TROWEL — DAILY PRE-OPERATION CHECKLIST

DAILY PRE-OPERATION CHECKLIST

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COMMENTS:

PAGE 6 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

Effective: June 1st, 2005

Ordering parts has never been easier!

PARTS ORDERING PROCEDURES

Choose from three easy options:

Best Deal!

Order via Internet (Dealers Only):

Order parts on-line using Multiquip’s SmartEquip website!

■

View Parts Diagrams

■

Order Parts

■

Print Specification Information

Goto www.multiquip.com and click on

Order Par ts

to log in and save!

Order via Fax (Dealers Only):

All customers are welcome to order parts via Fax.

Domestic (US) Customers dial:

1-800-6-PARTS-7 (800-672-7877)

Order via Phone:

Non-Dealer Customers:

Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.

If you have an MQ Account, to obtain a
Username and Password, E-mail us at:

[e-mail].

To obtain an MQ Account, contact your
District Sales Manager for more information.

internet

Use the
on

Standard orders

complete part numbers.*

Fax

your order in and qualify for a 3% Discount

on

Standard orders

complete part numbers.*

Domestic (US) Dealers Call:

1-800-427-1244

and qualify for a 5% Discount

for all orders which include

for all orders which include

International Customers

their local Multiquip Representatives for
Parts Ordering information.

Note: Discounts Are Subject To Change

Note: Discounts Are Subject To Change

should contact

When ordering parts, please supply:

❒❒

❒

Dealer Account Number

❒❒

❒❒

❒

Dealer Name and Address

❒❒

❒❒

❒

Shipping Address (if different than billing address)

❒❒

❒❒

❒

Return Fax Number

❒❒
❒❒

❒

Applicable Model Number

❒❒

❒❒

❒

Quantity, Part Number and Description of Each Part

❒❒

NOTE

www.multiquip.com

Unless otherwise indicated by customer, all orders are treated as
within 24 hours. We will make every effort to ship
if received prior to 2PM PST.

WE ACCEPT ALL MAJOR CREDIT CARDS!

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 7

❒❒

❒

Specify Preferred Method of Shipment:

❒❒

✓

Fed Ex/UPS

■

■

■ Next Day

■

Stock Orders

✓ DHL

Priority One
Ground

Second/Third Day

✓

Tr uck

Standard Orders

Air Shipments

must be noted on fax or web order form.

the same day the order is received,

and will ship

JTN RIDE ON TROWEL — SAFETY MESSAGE ALERT SYMBOLS

FOR YOUR SAFETY AND THE SAFETY OF OTHERS!

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.

This Owner's Manual has been
developed to provide complete
instructions for the safe and efficient
operation of the MQ Whiteman

NOTE

SAFETY MESSAGE ALERT SYMBOLS

The three (3) 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 three words: DANGER,

WARNING, or CAUTION.

Ride-On Trowel

trowel, ensure that the operating
individual has read and understands

all instructions in this manual.

Before using this

JTN

HAZARD SYMBOLS

Rotating Parts

NEVER operate equipment with covers,

or guards removed. Keep fingers, hands,
hair and clothing away from all moving
parts to prevent injury.

Accidental Starting

ALWAYS place the engine ON/OFF

switch in the OFF position, when the
trowel is not in use.

Over-Speed Conditions

NEVER tamper with the factory settings of

the engine governor settings. Personal

injury and damage to the engine or
equipment can result if operating speed
ranges above maximum allowable.

Sight and Hearing Hazard

DANGER:DANGER:

DANGER:

DANGER:DANGER:

SERIOUSLY injured if you DO NOT follow
directions.

WW

ARNING:ARNING:

W

ARNING:

WW

ARNING:ARNING:

SERIOUSLY injured if you DO NOT follow
directions.

CAUTION: CAUTION:

CAUTION:

CAUTION: CAUTION:

DO NOT follow directions.

Potential hazards associated with the JTN ride-on trowel
operation will be referenced with Hazard Symbols which appear
throughout this manual, and will be referenced in conjunction
with Safety Message Alert Symbols.

You WILL be KILLED or

You CAN be KILLED or

You CAN be injured if you

Other important messages are provided throughout this manual
to help prevent damage to your trowel, other property, or the
surrounding environment.

NOTE

ALWAYS wear approved

hearing

Respiratory Hazard

ALWAYS wear approved

protection when required.

Equipment Damage Messages

protection when required.

This trowel, other property, or the
surrounding environment could be
damaged if you DO NOT follow

instructions.

eye

and

respiratory

PAGE 8 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE ON TROWEL— RULES FOR SAFE OPERATION

■

CAUTION:

Failure to follow instructions in this manual may
lead to serious injury or even death! This
equipment is to be operated by trained and
qualified personnel only! This equipment is
for industrial use only.

The following safety guidelines should always be used when
operating the

SAFETY

■

DO NOT operate or service this equipment
before reading this entire manual.

■

This equipment should not be operated by
persons under 18 years of age.

■

NEVER operate the trowel without proper protective clothing,
shatterproof glasses, steel-toed boots and other protective
devices required by the job.

JTN Ride-On Trowel

.

NEVER touch the hot exhaust
manifold, muffler or cylinder. Allow
these parts to cool before servicing
the trowel.

■

High Temperatures – Allow the engine to cool before adding
fuel or performing service and maintenance functions. Contact

hot!

with

■

The engine of this trowel requires an adequate free flow of
cooling air. NEVER operate the trowel (except electric models)

components can cause serious burns.

in any enclosed or narrow
area where free flow of the
air is restricted. If the air flow

is restricted it will cause
serious damage to the
trowel's engine and may
cause injury to people.
Remember the trowel's
engine gives off
carbon monoxide gas.

DEADLY

■

■

NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.

■

NEVER operate the trowel under the
influence or drugs or alcohol.

■

NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage to
the equipment and/or injury to user may result.

■

Manufacturer does not assume responsibility for any accident
due to equipment modifications.

■

Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.

■

ALWAYS check the trowel for loosened threads or bolts
before starting.

■

■

■

■

ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.

ALWAYS use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it
to cool.

NEVER

machine. Fire or explosion could result from

fuel vapors

engine.

NEVER operate the trowel in an explosive atmosphere or
near combustible materials. An explosion or fire could result
causing severe

Topping-off to filler port is dangerous, as it tends to spill fuel.

smoke

around or near the

, or if fuel is spilled on a

bodily harm or even death.

hot!

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 9

JTN RIDE-ON TROWEL — RULES FOR SAFE OPERATION

The following safety guidelines should always be used when
operating the JTN ride-on trowel:

General Safety

■

DO NOT operate or service this equipment before reading
this entire manual.

■

This equipment should not be operated by persons under 18
years of age.

■

DO NOT operate this trowel unless all guards and safety
devices are attached and in place.

■

ALWAYS check to make sure that the operating area is clear
before starting the engine.

■

ALWAYS test the

■

NEVER place your feet inside the guard rings while starting
or operating this trowel.

■

ALWAYS keep clear of rotating or moving parts while
operating this trowel.

■

NEVER leave the trowel unattended while running.

■

NEVER modify the safety kill switch. It is design for operator
safety.

■

ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.

■

ALWAYS use extreme caution when working with flammable
liquids. When refueling, stop the engine and allow it to cool.

DO NOT

explosion could result from flames or sparks, or if fuel is spilled
on a hot engine.

safety kill switch

smoke

before operating the trowel .

around or near the machine. Fire or

■

NEVER run engine without air filter. Severe engine damage
may occur.

■

ALWAYS service air filter frequently to prevent engine
malfunction.

■

ALWAYS be sure the operator is familiar with proper safety
precautions when operating the trowel.

■

ALWAYS store trowel properly when not in use.

■

DO NOT leave the trowel running unattended.

■

DO NOT allow unauthorized people to operate this trowel.

■

ALWAYS read, understand, and follow procedures in
Operator’s Manual before attempting to operate equipment.

■

Refer to the

Owner's Manual

information.

Transporting

■

ALWAYS shutdown engine before transporting.

■

Tighten fuel tank cap securely.

■

If the trowel is being transported via a trailer, make sure
trailer complies with all local and state safety
transportation laws. See “
for basic towing techniques in this manual.

Briggs and Stratton or Honda Engine

for engine technical questions or

Towing Safety Precautions

”

■

Moving Parts - Shut down the engine and disconnect battery
before performing service or maintenance functions. Contact
with moving parts can cause serious injury.

■

When lifting of the trowel is required, a chain can be attached
to the lift loops, allowing a forklift or crane to lift the ride-on
trowel up onto a slab of concrete. The strap or chain should
have a minimum 2,000 pounds (1000-kg) lifting capacity and
the lifting gear must be capable of lifting at least this amount.

■

NEVER stand underneath the trowel when it is being lifted.

■

This ride-on trowel is very
Use proper heavy lifting procedures and DO NOT attempt to
lift the ride-on trowel by the

PAGE 10 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

heavy

and awkward to move around.

guard rings

.

JTN RIDE-ON TROWEL— RULES FOR SAFE OPERATION

Maintenance Safety

■

Disconnect the battery and spark plug wires before attempting
any type of service.

■

Securely support any trowel components that must be raised.

■

NEVER lubricate components or attempt service on a running
machine.

■

ALWAYS allow the trowel a proper amount of time to cool
before servicing.

■

Keep the trowel in proper running condition.

■

Make sure that there is no buildup of concrete, grease, oil or
debris on the trowel.

■

Fix damage to the trowel immediately and always replace
broken parts.

■

Dispose of hazardous waste properly. Examples of potentially
hazardous waste are used motor oil, fuel and fuel filters.

■

DO NOT use plastic food 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.

■

NEVER store trowel with fuel in the tank for any extended
period of time. Always clean up spilled fuel immediately.

Battery

The battery contains acids that can cause injury to the eyes
and skin. To avoid eye irritation,
Use well insulated gloves when picking up the battery. Use
the following guidelines when handling the battery:

■

■

■

■

always

DO NOT drop the battery. There is the possibility of risk

that the battery may explode.
DO NOT expose the battery to

open flames, sparks, cigarettes
etc. The battery contains
combustible gases and liquids. If
these gases and liquids come in
contact with a flame or spark, an
explosion could occur.

ALWAYS keep the battery charged. If the battery is not
charged a buildup of combustible gas will occur.

ALWAYS keep battery charging and cables in good working
condition. Repair or replace all worn cables.

wear safety glasses.

DANGER:DANGER:

DANGER:

DANGER:DANGER:

Pay close attention to
ventilation when operating
the trowel inside tunnels

and caves. The engine
exhaust contains noxious elements.
Engine exhaust must be routed to a
ventilated area.

■

ALWAYS disconnect the
performing service on the trowel.

■

ALWAYS recharge the battery in an vented air
environment, to avoid risk of a dangerous concentration
of combustible gases.

■

In case the battery liquid (dilute sulfuric acid) comes in
contact with
immediately with plenty of water.

■

In case the battery liquid (dilute sulfuric acid) comes in
contact with your eyes, rinse eyes immediately with plenty
of water, then contact the nearest doctor or hospital, and
seek medical attention.

clothing or skin

negative battery terminal

, rinse skin or clothing

before

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 11

JTN RIDE-ON TROWEL — RULES FOR SAFE OPERATION

Towing Safety Precautions

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Conform to
(DOT)
towing generator.

To reduce the possibility of an accident while transporting
the trowel on public roads, always make sure the trailer that
supports the trowel and the towing vehicle are in good
operating condition and both units are mechanically sound.

The following list of suggestions should be used when towing
your generator:

■

Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer "gross vehicle
weight rating" (GVWR) of 6,000 lbs.

■

ALWAYS inspect the hitch and coupling for wear. NEVER
tow a trailer with defective hitches, couplings, chains
etc.

Department of Transportation

Safety Towing Regulations

before

■

Avoid sharp turns.

■

Trailer should be adjusted to a level position at all times
when towing.

■

Raise and lock trailer wheel stand in up position when
transporting.

■

DOT Requirements include the following:

z
z

Emergencies

■

ALWAYS know the location of the nearest

■

ALWAYS know the location of the nearest and

Connect and test electric brake operation.
Secure portable power cables in cable tray with
tie wraps.

fire extinguisher

first aid kit

.

.

■

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 "Safety
Chain".

■

ALWAYS attach trailer’s safety chains to towing vehicle
properly.

■

ALWAYS make sure the vehicle and trailer directional,
backup, brake, and trailer lights are connected and
working properly.

■

The maximum speed for highway towing is 45 MPH
unless posted otherwise. Recommended off-road towing
is not to exceed 10 MPH or less depending on type of
terrain.

■

Place
rolling, while parked.

■

Use the trailer’s swivel jack to adjust the trailer height to
a level position while parked.

■

Avoid sudden stops and starts. This can cause skidding,
or jack-knifing. Smooth, gradual starts and stops will
improve towing.

Trailer tires should be inflated to 50 psi cold.

chock blocks

underneath each wheel to prevent

■

In emergencies

nearest phone or
Also know the phone numbers of the nearest

ambulance, doctor

information will be invaluable in the case of an
emergency.

always

know the location of the

keep a phone on the job site

and

fire department

.

. This

PAGE 12 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL— RULES FOR SAFE OPERATION

Machine Safety Decals

The JTN-Series Ride-On Trowel is equipped with a number of safety decals. These decals are provided for operator safety and
maintenance information. Figure 1 below illustrates these decals as they appear on the machine. Should any of these decals
become unreadable, replacements can be obtained from your dealer.

Figure 1. Operation and Safety Decals

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 13

JTN RIDE-ON TROWEL — SPECIFICATIONS (TROWEL)

Figure 2. Trowel Dimensions

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height (seat ) add 4 inches (10.2 cm.).

PAGE 14 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL — SPECIFICATIONS (ENGINE)

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JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 15

INITIAL SERVICING

JTN RIDE-ON TROWEL— ENGINE COMPONENTS (HONDA)

Figure 3. Engine Controls and Components (Honda)

The engine (Figure 3) must be checked for proper lubrication and
filled with fuel prior to operation. Refer to the manufacturer's engine
manual for instructions & details of operation and servicing. The
engine shown above is a HONDA engine. Operation for other
types of engines may vary somewhat.

1. Fuel Filter – Filters fuel for contaminants.

2. Air Filter – 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. Recoil Starter (pull rope) – Manual-starting method. Pull
the starter grip until resistance is felt, then pull briskly and
smoothly.

6. Oil Sensor Switch – This switch monitors the oil level in
the engine crankcase. In the event of low oil, the engine
will be shut down.

7. Oil Filter – Spin-on type, filters oil for contaminants.

8. Throttle Lever – Controlled by accelerator pedal,
increases or decreases engine RPM.

10. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.71 - 0.78 mm (0.028 - 0.031 inch) Clean
spark plug once a week.

11. Oil Filler Cap – Remove cap to refill or replace oil with
recommended type as listed in Table 3. Make sure cap is
tightened securely. DO NOT over fill.

12. Muffler –Used to reduce noise and emissions.
touch the muffler while it is hot! Serious burns can result.

NEVER

operating. NEVER operate the engine with the muffler removed.

13. Oil Dip Stick – Remove to check amount and condition of
oil in crankcase.

14. Starter – Starts engine when ignition key is rotated to the

"ON" position.

NEVER

operate the engine with the muffler removed.

WARNING

Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after

15. Oil Drain Plug – Remove to drain crankcase oil.

PAGE 16 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL — ENGINE COMPONENTS (VANGUARD)

Figure 4. Engine Controls and Components (Vanguard)

INITIAL SERVICING

The engine (Figure 4) must be checked for proper lubrication and
filled with fuel prior to operation. Refer to the manufacturers Engine
manual for instructions & details of operation and servicing.

1. Oil Fill Cap – Remove cap to refill or replace oil with
recommended type as listed in Table 3. Make sure cap is
tightened securely. DO NOT over fill.

2. Oil Dipstick – Remove to check amount and condition of
oil in crankcase.

3. Fuel Pump – Pumps fuel from the fuel tank into the
carburetor.

4. Spark Plugs – Provides spark to the ignition system. Set
spark plug gap to 0.71 - 0.76 mm (0.028 - 0.030 inch) Clean
spark plug once a week.

5. Electric Starter – Starts engine when ignition key is rotated
to the “ON” position.

10. Ignition Switch – Insert the ignition key here to start the
engine. Turn the key clockwise to the
continue turning clockwise to the
release. To stop the engine turn the key fully counter­clockwise to the

NOTE

11. Air Filter – Prevents dirt and other debris from entering
the fuel system. Release the latches on the sides of the air
filter cover to gain access to filter element.

STOP

ON

position, then

START

position.

Operating the engine without
an air filter, with a damaged air
filter, or a filter in need of
replacement will allow dirt to
enter the engine, causing rapid
engine wear.

position and

6. Oil Drain Plug – Remove to drain crankcase oil.

7. Recoil Starter (pull rope) – Manual-starting method. Pull
the starter grip until resistance is felt, then pull briskly and
smoothly.

8. Throttle Lever – Used to adjust engine RPM speed (lever

SLOW

advanced forward

FAST

).

9. Choke Lever – Used in the starting of a cold engine, or in
cold weather conditions. The choke enriches the fuel
mixture.

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 17

, lever back toward operator

12. Muffler – Used to reduce noise and emissions.

13. Oil Filter – Prevents dirt and other debris from entering the

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.

NEVER

touch the muffler while it is hot! Serious burns can result.

NEVER

engine. Service the oil filter as recommended in the
maintenance section of this manual.

operate the engine with the muffler removed.

JTN RIDE-ON TROWEL — GENERAL INFORMATION

JTN RIDE-ON TROWEL FAMILIARIZATION

The JTN ride-on trowel is designed for the floating and finishing
of concrete slabs. This ride-on trowel is a non-overlapping trowel.

Take a walk around the trowel. Take notice of all the major
components (see Figures 5 and 6) 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 gear box
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. Look to see 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 driveline of the trowel. Take note and reference
how the belts look, this is the way the belts should look when
adjusted properly.

Before using your ride-on 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 either a air-cooled 18 HP Vanguard
(Briggs and Stratton) gasoline engine or a 20 HP air-cooled
Honda gasoline engine (GX620). Refer to the engine owner’s
manual for specific instructions regarding engine operation. This
manual is included with the ride-on trowel at the time of shipping
from Whiteman. Please contact your nearest Multiquip Dealer
for a replacement should the original manual disappear.

Gearboxes

The JTN ride-on trowel consist of two separate gearbox
assemblies that are enclosed in rugged cast aluminum gear
cases. The main gear is a high quality bronze and steel
composite. The worm gear is composed of hardened steel.

Cooling fins and fans are integrated into the gearbox to provide
maximum cooling for the gearbox oil. The gearbox casing holds
50% more oil capacity than competitors, which allows more
lubrication to be provided 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.

Constant Velocity Joints (CV-Joints)

Constant velocity joints insure the efficient transfer of power to
the drive shaft and maintains the timing of the gearboxes without
any chance of slippage.

Training

For proper training, please use the “TRAINING CHECKLIST”
located in the front of this manual. This checklist will provide an
outline for an experienced operator to provide training to a new
operator.

Blades

The blades of the trowel finish the concrete as they are rotated
around the surface. Blades are classified as
(8 inches wide),
inches wide). This trowel comes equipped with four blades
per rotor equally spaced in a radial pattern and attached to
vertical rotating shaft by means of a

float

(10 or 8 inches wide), and finish (6

spider assembly.

PAGE 18 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

combination

NOTE PAGE

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 19

JTN RIDE-ON TROWEL — CONTROLS AND INDICATORS

Figure 5. JTN Controls and Indicators (Front)

1. Seat – Place for operator to sit. Engine will not start unless

operator is seated. Seat is adjustable, fore and aft for
operator comfort.

2. Steering Control Lever (right-side) -Allows the unit to
move in either a forward, reverse left or right direction.

3. Retardant Spray Control Button – When pressed allows
retardant spray to flow through the spray nozzle located at
the front of the machine.

4. Twin Pitch Control – Adjusts the blade pitch for right side
of the trowel. Turn the crank as marked on its top surface to
increase or decrease blade pitch.

5. Twin Pitch Control – Adjusts the blade pitch for left side
of the trowel. Turn the crank as marked on its top surface to
increase or decrease blade pitch.

6. Steering Control Lever (left-side) -Allows the unit to
move in either a forward, reverse left or right direction.

7. Light Switch – When activated, turns on four halogen
lights. Lights offer better visibility when working indoors.

8. Ignition Switch – With key inserted turn clockwise to start
engine.

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

10. Fuel Tank - Holds 2.2 gallons of unleaded gasoline.

11. Spare Belt Carrier - Contains 2 spare belts. Belts are used

on the drive pulley.

12. Left Foot Riser – Operator foot rest pedal.

13. Spray Nozzle – Spray nozzle for retardant.

14. 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.

15. EZ- Mover Boss – Front -side insertion point for EZ Mover.
Used when the transporting of the trowel is required.

16. Lights – Four 12 volt halogen lights are provided with this
unit.

17. Hour Meter - Indicates number of hours machine has been
in use or hours engine was run.

18. Dip Stick- Access hole provided to check engine oil
through this cutout.

19. Spark Plug- Access the spark plug through this cutout.

PAGE 20 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL — CONTROLS AND INDICATORS

HTN/HTO-31V — CONTROLS AND INDICATORS

Figure 6. JTN Controls and Indicators (Rear)

20. Right-Side Spider – Consists (basic) of trowel arms,

blades, wear plate, and thrust collar etc.

21. Left-Side Spider – Consists (basic) of trowel arms, blades,
wear plate, and thrust collar etc.

22. Battery – Provides +12V DC power to the electrical system

23. Retardant Spray Motor – Used in conjunction with the

left spray control button.

24. Retardant Spray Tank – Holds 5 gallons of retardant.

25. Belt Guard – Encloses V-belts used in conjunction with

26. EZ- Mover Boss – Back- side insertion point for EZ Mover.

27. Safety Kill Switch – Shuts down engine when operator is

28. Lift Loops – Located on both the left and right sides of the

clutch.

Used when the transporting of the trowel is required.

not sitting in seat.

main frame. Used when the trowel must be lifted onto a
concrete slab.

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 21

JTN RIDE-ON TROWEL— NEW MACHINE SETUP INSTRUCTIONS

Trowel Pre-Set-Up Instructions

The purpose of this section is to assist the user in the setting up

NEW

of a
handles, knobs and battery, then this section can be skipped.

Before packaging and shipping this Whiteman Ride-On Power
Trowel was run and tested at the factory. If there are problems,
please let us know.

Control Handle Setup

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

2 Remove all protective wrapping and straps from the control

3. Slip the top (loose) piece into the base of the corresponding

4. Install the bolt through the lined up holes and tighten the

trowel. If your trowel is already assembled (seats,

The new ride-on trowel cannot be
put into service until the pre-setup

NOTE

towers.

handles.

handle, making sure to line up the holes.

acorn nut onto the threaded end.

installation instructions are
completed. These pre-setup
instructions only need to be
performed at the time of unpacking

NEW

a

trowel.

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. Remove the bolts on the bottom of the seat, and place seat
on the seat mounting plate, then insert the bolts through
the holes or slots on the seat mounting plate and tighten.

NOTE

on tracks, similar to an automobile seat. This seat can be adjusted
fore and aft via the control lever under the front of the seat.

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.

When charging the battery, always wear
rubber gloves. Use the following rules when charging the
battery:

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

There are two types of seats,
depending on what type of trowel

you have. J and H series trowels
have slots on the seat mounting
plate that allow fore and aft
adjustment of the seat. H-series
trowels have a seat that is mounted

eye

protection and

Some models are equipped with
adjustable height handles. Adjust

NOTE

the height by placing the bolt
through the set of holes that
corresponds to the most comfortable
height.

■

DO NOT expose the battery to
open flames, sparks, cigarettes
etc. The battery contains

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.

combustible gases and liquids. If these gases and liquids
come in contact with a flame or spark, an explosion could
occur.

■

ALWAYS keep the battery charged. If the battery is not
charged a buildup of combustible gas will occur.

To install the battery on the trowel, make sure that the

■

ALWAYS keep battery charging and cables in good working

battery is well seated in the battery box and the

condition. Repair or replace all worn cables.

terminals are properly connected. Close the plastic

battery box cover and secure the battery box.

■

ALWAYS recharge the battery in an vented air environment,
to avoid risk of a dangerous concentration of combustible
gases.

PAGE 22 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL — INITIAL START-UP

This section is intended to assist the operator with
the initial start-up of the JTN ride-on trowel. It is
extremely important that this section be read
carefully before attempting to use the trowel in
the field.

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

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Failure to understand the operation of the JTN
Ride-On Trowel could result in severe damage
to the trowels or personal injury.

See Figures 5 and 6 for the location of any control or indicator
referenced in this manual.

Engine Oil Level

1. To check the engine oil level, place the trowel on secure
level ground with the engine stopped.

2. Remove the dipstick from its holder as shown in Figure 7
and wipe clean.

3. Insert and remove the dipstick into the holder. Check the oil
level shown on the dipstick.

4. If the oil level is low (Figure 7), fill to the correct operating
level with the recommended oil type as listed in Table 3.
See Table 2 for engine oil capacity.

Gearbox Oil Level

1. Check the gearbox oil level in both gearboxes
by removing the plug located on the side of the
gearbox. See Figure 8.

2. The level of oil in the gearbox should just reach the bottom
of the fill plug hole. The fill hole plug is located approximately
half way up the side of the gearbox. If needed, refill with
specially formulated Whiteman gearbox lubricant P/N
10139 or ISO 680 oil. Gearbox oil capacity is 27 oz. (.798
liters).

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Fuel

1. Determine if the engine fuel is low. If fuel level
is low, remove the fuel filler cap and fill with
unleaded gasoline. Handle fuel safely. Motor
fuels are highly flammable and can be
dangerous if mishandled. DO NOT smoke while refueling.
DO NOT attempt to refuel the ride-on trowel if the engine is
hot or running.

Figure 8. Gearbox Oil Plugs

Use caution when removing plugs on the
gearbox, there are two of them. Removal of
the bottom most plug (
the oil in the gearbox.

drain plug

) will drain

DANGER:DANGER:

DANGER:

DANGER:DANGER:

Figure 7. Engine Oil Dipstick

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JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 23

ALWAYS
gasoline.

expansion.
The fuel tank cap must be closed tightly after filling. Handle

fuel in a safety container. If the container does not have a
spout, use a funnel. Wipe up any spilled fuel immediately.

fill the fuel tank with clean and fresh unleaded

DO NOT over fill fuel tank. Leave room for

Fuel spillage on a
a

fire

or

explosion

wipe up the spilled fuel completely to

prevent fire hazards.
around or near the generator.

hot!

engine can cause

. If fuel spillage occurs,

NEVER!

smoke

JTN RIDE-ON TROWEL — INITIAL START-UP

Starting the Engine (Honda)

1. With one foot on the ground and the other foot placed on
the trowel’s platform, grab hold of any part of the frame and
lift yourself onto the trowel. Then sit down in the operator’s
seat.

2. The MQ Whiteman JTN ride-on trowel is equipped with a

kill switch

safety
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.

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

3. It is recommended that the
engine after every use. Doing this will verify that the switch
is working properly and presents no danger to the operator.
Remember to turn the key to the “OFF” position after
stopping the trowel. Not doing so may drain your units’
battery.

4. 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.

. This switch is located beneath the seat

NEVER disable or disconnect the kill switch. It
is provided for the operator's safety and injury
may result if it is disabled, disconnected or
improperly maintained.

kill switch

be used to stop the

5. When starting a cold engine, pull the choke knob (Figure 10)
out to the
engine is warm, the unit can be started with choke halfway
or completely

6. Keep your foot OFF the gas pedal (right foot pedal). If the

engine is cold, adjust the choke but in all circumstances,
start the engine at idle (without touching the gas pedal).

7. Insert the

8. Turn the ignition key (Figure 11) clockwise and listen for

the engine to start. Once the engine starts release ignition
key.

9. If the engine fails to start in this manner, consult the engine

owner's manual supplied with the trowel.

10. Test the safety "kill switch" by standing up briefly. The switch

under the seat should cause the engine to stop. If the "kill
switch" fails to shut down the engine. Turn off the engine
with the key switch and fix the safety "kill switch". See Table 6
(Troubleshooting ) for possible problems.

close

position. In warm weather or when the

open

.

Figure 10. Choke Knob

ignition key

into the ignition switch.

11. Repeat this section a few times to get fully acquainted with

the engine starting procedure.

Figure 9. Blade Speed Control Foot Pedal

Figure 11. Ignition Switch/Key

PAGE 24 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL — INITIAL START-UP

Steering

Two control levers located in front of the operator’s seat provide
directional control for the trowel. Table 4 below illustrates the
various directional positions of the control levers and their effect
on the ride-on trowel.

All directional references with

NOTE

respect to the steering control
levers are from the

operator’s

seat

position.

Figure 12. Left and Right Control Levers

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

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 blade will be moving at proper
finishing speed. The machine may be difficult to keep in

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.

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

one place. Trying to keep the ride-on trowel stationary is a
good practice for operation.

NOTE

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JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 25

JTN RIDE-ON TROWEL— MAINTENANCE

Use Table 5 as a general guideline when servicing of the engine is
required.

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Spark Plug (100 Hours)

1. Inspect the spark plug every 100 hours, replace plug if the
electrodes are worn, or if the insulator is cracked or chipped.
Clean the spark plug with a wire brush, if plug is to be
reused.

Engine Maintenance Schedule (Daily)

Daily (8-10 Hours)

■

Check the oil level in the engine crankcase and gear box, fill
as necessary.

■

Check V-belt.

Long Term Storage

■

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 free and

Figure 13. Spark Plug

2. For Honda engines adjust the spark gap (Figure 13) to

dust free location out of direct sunlight.

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

0.028~0.031 inch (0.70~0.78 mm). For Vanguard engines
adjust spark gap to 0.030 inch (76 mm). Both engines have
electronic ignition, which requires no adjustments. Replace
spark plug every 300 hours.

NEVER store the ride-on trowel with fuel in the
tank for any extended period of time. ALWAYS
clean up spilled fuel immediately.

PAGE 26 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL— MAINTENANCE

Maintenance

Perform the scheduled maintenance procedures as indicated:

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.

Air Cleaner (Daily)

1. Release the four latch tabs (Figure 14) from the air cleaner
cover, and remove the cover.

9. Reinstall the foam air filter element to 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

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 and fill engine crankcase with
recommended type oil as listed in Table 3. Fill to the upper
limit of dipstick.

3. Fill crankcase with oil. Reference Table 2 for crankcase oil
capacity.

Oil Filter (200 Hours)

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

Figure 14. Air Cleaner

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/cm
filter element from the air cleaner case side.

NEVER!

6.
fibers. If the paper element is excessively dirt, replace
element.

7. Clean the
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 to
enter the air chamber that leads to the carburetor.

try to brush off dirt; brushing will force dirt into the

foam air filter element

in warm soapy water,

2

) through the

Figure 15. Oil Filter

2. Be sure to coat the
engine oil.

Fuel Filter (200 Hours)

1. Replace the engine fuel filter (Figure 16) every 200 hours.

Figure 16. Fuel Filter

seal

of the new oil filter with clean

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 27

JTN RIDE-ON TROWEL— MAINTENANCE

Belt Changing Procedure

The belts need to be changed as soon as they show signs of
wear. Remember that all belts should be changed at the same
time. Do not reuse a belt under any circumstances. Indications of
excessive belt wear are fraying, squealing when in use, belts
that emit smoke or a burning rubber smell when in use.

Under normal operating conditions, a set of belts may last
approximately six months. If you trowel is not reaching this kind
of life span for belts, there are some things to check when you
replace a set of belts.

Check to ensure that the belts are tensioned correctly. Next, check
to make sure that the lower drive pulley (Figure 17) is aligned
properly.

Your machine is equipped with a spare belt carrier (Figure 17). It
is located opposite the clutch, mounted on the fuel tank. Make
sure that there are belts in the carrier before the trowel is placed
on a slab to finish concrete.

To install new belts from the spare belt carrier, first cut off the old

belts. Next, remove the spare belt carrier by unscrewing the two
bolts that attach it to the fuel tank.

NOTE

Make sure that there are belts in
the belt carrier before the trowel is
placed on a slab to finish concrete.

The next step is to loosen the four engine mounting bolts and
slide the engine toward the rear of the trowel. Slide the first belt
over the clutch and place it on the upper drive pulley, then pull it
down and place it on the lower drive pulley. Repeat this procedure
for the second belt.

Realign the engine as described in the Belt Tension
Adjustment Procedure, and replace the belts in the spare belt
carrier.

Replacing Spare Belts

.
After the spare set of belts has been installed on the clutch pulley,

it will be necessary to replace the spare set of belts that were in
the spare belt carrier.

To replace a spare set of belts, be prepared to disassemble the

driveline

The driveline is located directly under the spare belt carrier.
There are three bolts that need to be removed that will disconnect
the CV-joint from the gearbox coupler. See Figure 17.

Once the CV-joint has been separated from the gearbox coupler,

.

push the CV-joint inward so that a gap exist between the coupler
and the CV-joint. Slide the replacement belts between this gap,
and place them onto the spare belt carrier. Secure the spare belt
carrier to the fuel tank.

.

Figure 17. Belt Changing Diagram

PAGE 28 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)

JTN RIDE-ON TROWEL — MAINTENANCE

See the engine manual supplied
with your trowel for appropriate

NOTE

engine maintenance schedule and
troubleshooting guide for problems.

At the front of this manual there is a “

Checklist

basis.

CAUTION!CAUTION!

CAUTION!

CAUTION!CAUTION!

Trowel Maintenance Schedules

Weekly (50-60 Hours)

■

Relube arms, thrust collar and clutch.

■

Replace blades if necessary.

”. Make copies of this checklist and use it on a daily

ALWAYS allow the engine to
cool before servicing. NEVER
attempt any maintenance

hot!

work on a

engine.

Daily Pre-Operation

Trowel Arm Adjustment Procedure

The following procedure should be
followed to adjust trowel arms when

NOTE

level

, clean area to test the trowel prior to and after is essential.

A

spots

Any uneven
will give an incorrect perception of adjustment. Ideally, a 5 x 5"
three-quarter inch thick

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

with the
that one of them is not making contact, some adjustment
will be necessary.

■

Is the machine wearing out blades unevenly (i.e. one
blade is completely worn out while the others look new)?

in the floor or debris under the trowel blades

lower wear plate

it becomes apparent that the trowel
is finishing poorly or in need of
routine maintenance.

flat

steel plate should be used for testing.

. They should all barely make contact

on the spider. If you can see

Figure 18 below illustrates a "

Monthly (200-300 Hours)

■

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

■

Remove, clean, reinstall clutch.

Yearly (2000-2500 Hours)

■

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

■

Check pitch control cables for wear.

■

Adjust blade speed.

trowel arms

touching (0.10" max. clearance) lower wear plate. All alignment
bolts should be spaced the same distance from the lower wear
plate.

Figure 19 below illustrates the "
plate (as shipped from the factory).

worn spider bushings or bent

". Check to see that adjustment bolt is barely

Figure 18. Worn Spider Plate

correct alignment

" for a spider

Figure 19. Correct Spider Plate Alignment

JTN RIDE-ON TROWEL — OPERATION & PARTS MANUAL — REV. #5 (08/03/06) — PAGE 29

JTN RIDE-ON TROWEL — MAINTENANCE

2. Start engine, and bring trowel blades up to full speed and look

b. Loosen the jam nut and cone point square head set

for the following conditions:

■

Does the trowel have a perceived rolling or bouncing
motion when in use?

■

Look at the trowel while it is running, does the guard
ring “rock up and down” relative to the ground?

Spider Removal

c. If the trowel is equipped with an outer stabilizer ring

1. Once it is determined that an adjustment is required, remove
the spider assembly from the gearbox shaft as follows:

a. Locate the cone point square head set screw (Figure 20)

and attached jam nut found on the side of the spider
assembly.

REMOVE

TO FREE

SPIDER

ASSEMBLY

screw, and carefully lift the

upper trowel assembly

off
of the spider assembly. A slight tap with a rubber mallet
may be necessary to dislodge the spider from the main
shaft of the gearbox.

(Figure 21), remove the four bolts at the end of each
spider arm.

STABILIZER

RING

Figure 20. Stabilizer Ring

d. Examine stabilizer ring for out of round or bends. If ring

is damaged, replace ring. If ring is found to be correct with
no damage, set aside.

Trowel Arm Removal

1. Each trowel arm is held in place at the spider plate by a hex
head bolt (zerk grease fitting) and a roll pin. Remove both the
hex head bolt and the roll pin (Figure 22) from the spider
plate.

2. Remove the trowel arm from the spider plate.

Figure 20. Spider/Gearbox Removal

Figure 22. Removing Roll Pin

and Zerk Grease Fitting

PAGE 30 — JTN RIDE-ON TROWEL— OPERATION & PARTS MANUAL — REV. #5 (08/03/067)