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Page 5
BRUTE FORCE 750 4×4i
Property of www.SmallEngineDiscount.com - Not for Resale
KVF 750 4×4
AllTerrainVehicle
ServiceManual
All r ights reserved. No parts of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic mechanical photocopying, recording or otherwise,
without the prior written permission of Quality Assurance Department/Consumer Products & Machinery
Company/Kawasaki Heavy Industries, Ltd., Japan.
No liability can be accepted for any inaccuracies or omissions in this publication, although every possible
care has been taken to make it as complete and accurate as possible.
The right is reserved to make changes at any time without prior notice and without incurring an obligation
to make such changes to products manufactured previously. See your dealer for the latest information on
product improvements incorporated after this publication.
All information contained in this publication is based on the l atest product information available at the time
of publication. Illustrations and photographs in this publication are intended for reference use only and may
not depict actual model com ponent parts.
Property of www.SmallEngineDiscount.com - Not for Resale
A
ABDCafter bottom dead center
ACalternating currentminminute(s)
ATDCafter top dead centerNnewton(s)
BBDCbefore bottom dead centerPapascal(s)
BDCbottom dead centerPShorsepower
BTDCbefore top dead centerpsipound(s) per square inch
°Cdegree(s) Celciusrrevolution
DCdirect currentrpmrevolution(s) per minute
Ffarad(s)TDCtop dead center
°Fdegree(s) FahrenheitTIRtotal indicator reading
ftfoot, feetVvolt(s)
ggram(s)Wwatt(s)
hhour(s)Ωohm(s)
Lliter(s)
ampere(s)
lb
m
pounds(s)
meter(s)
Read OWNER’S MANUAL before operating.
Page 7
EMISSION CONTROL INFORMATION
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Toprotecttheenvironment in which we alllive,Kawasakihasincorporatedcrankcaseemission
(1) and exhaust emission (2) control systems in compliance with applicable regulations of the
California Air Resources Board.
1. Crankcase Emission Control System
A sealed-type crankcase emission control system is used to eliminate blow-by gases. The blow
-by gases are led to the breather chamber through the crankcase. Then, it is led to the air cleaner.
Oil is separated from the gases while passing through the inside of the breather chamber from
the crankcase, and then returned back to the bottom of crankcase.
2. Exhaust Emission Control System
The exhaust emission control system applied to this engine family is engine modifications that
consist of a modified carburetor and an ignition system having optimum ignition timing characteristics.
The carburetor has been calibrated to provide lean air/fuel mixture characteristics and optimum
fuel economy with a suitable air cleaner and exhaust system.
A maintenance free ignition system provides the most favorable ignition timing and helps main-
tain a thorough combustion process within the engine which contributes to a reduction of exhaust
pollutants entering the atmosphere.
The Clean Air Act, which is the Federal law covering motor vehicle pollution, contains what is
commonly referred to as the Act’s "tampering provisions."
"Sec. 203(a) The following acts and the causing thereof are prohibited...
(3)(A) for any person to remove or render inoperative any device or element of design installed
on or in a motor vehicle or motor vehicle engine in compliance with regulations under this
title prior to its sale and delivery to theultimate purchaser, or for any manufacturer or dealer
knowingly to remove or render inoperative any such device or element of design after such
sale and delivery to the ultimate purchaser.
(3)(B) for any person engaged in the business of repairing, servicing, selling, leasing, or trading
motor vehicles or motor vehicle engines, or who operates a fleet of motor vehicles knowingly to remove or render inoperative any device or element of design installed on or in a
motor vehicle or motor vehicle engine in compliancewith regulations under this title f ollowing its sale and delivery to the ultimate purchaser..."
NOTE
The phrase "remove or render inoperative any device or element of design" has been generally
○
interpreted a s follows:
1. Tampering does not include the temporary removal or rendering inoperative of devices or elements of design in order to perform maintenance.
2. Tampering could include:
a.Maladjustment of vehicle components such that the emission standards are ex-
ceeded.
b.Use of replacement parts or accessories which adversely affect the performance
or durability of the vehicle.
c.Addition of components or accessories that resultinthevehicleexceedingthe stan-
dards.
d.Permanently removing, disconnecting, or rendering inoperative any component or
element of d esign of the emission control systems.
WE RECOMMEND THAT ALL DEALERS OBSERVE THESE PROVISIONS OF FEDERAL LAW,
THEVIOLATIONOFWHICHISPUNISHABLEBYCIVILPENALTIESNOTEXCEEDING
$10,000 PER VIOLATION.
Page 8
PLEASE DO NOT TAMPER WITH NOISE CONTR OL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
(US MODEL only)
To minimize the noise emissions from this product, Kawasaki has equipped it with effective
intake and exhaust silencing systems. They are designed to give optimum performance while
maintaining a low noise level. Please do not remove these systems, or alter them in any which
results in an increase in noise level.
Page 9
Foreword
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This manual is designed primarily for use by
trained mechanics in a properly equipped shop.
However,it contains enoughdetailand basic informationto make it useful to theownerwhodesirestoperform his own basic maintenance and
repair work. A basic knowledge of mechanics,
the proper use of tools, and workshop procedures must be understood in order to carry out
maintenance and repair satisfactorily. Whenever the owner has insufficient experience or
doubts his ability to do the work, all adjustments, maintenance, and repair should be carried out only by qualified mechanics.
In order to perform the work efficiently and
to avoid costly mistakes, read the text, thoroughly familiarize yourself with the procedures
beforestartingwork, and then do the work carefully in a clean area. Whenever special tools or
equipment are specified, do not use makeshift
tools or equipment. Precision measurements
can only be made if the proper instruments are
used, and the use of substitute tools may adversely affect safe operation.
For the duration of the warranty period,
we recommend that all repairs and scheduled
maintenance be performed in accordance with
thisservice manual. Anyowner maintenance or
repair procedure not performed in accordance
with this manual may void the warranty.
To get the longest life out of your vehicle:
Follow the Periodic M aintenance Chart in the
•
Service Manual.
Be alert for problems and non-scheduled
•
maintenance.
Use proper toolsand genuineKawasaki Vehi-
•
cle parts. Special tools, gauges, and testers
that are necessary when servicing Kawasaki
vehicles are introduced by the Special Tool
Catalog or Manual. Genuine parts provided
as spare parts are listed in the Parts Catalog.
Follow the procedures in this manual care-
•
fully. Don’t take shortcuts.
Rememberto keep completerecordsof main-
•
tenance and repair with dates and any new
parts installed.
How to Use This Manual
In this manual, the product is divided into
its major systems and these systems make up
the manual’s chapters. The Quick Reference
Guide shows you all of the product’s system
and assists in locating their chapters.Each
chapter in turn has its own comprehensive Table of Contents.
For example, if you want ignitioncoil information, use the Quick Reference Guide to locate
the Electrical System chapter. Then, use the
Table of Contents on the first page of the chapter to find the Ignition Coil section.
Whenever you see these WARNING and
CAUTION symbols, heed their instructions!
Always follow safe operating and maintenance
practices.
WARNING
This warning symbol identifies special
instructions or procedures which, if not
correctly followed, could result in per-
sonal injury, or loss of life.
CAUTION
This caution sym bol identifies special
instructions or procedures which, if not
strictly observed, could result in dam-
age to or destruction of equipment.
This m anual contains four more symbols (in
additionto WARNINGand CAUTION)whichwill
help you distinguish different types of information.
NOTE
This note symbol indicates points of par-
○
ticular interest for more efficient and con-
venient operation.
Indicates a procedural step or work to be
•
done.
Indicates a procedural sub-step or how to do
○
the work of the procedural step it follows. It
also precedes the text of a NOTE.
Indicates a conditional step or what action to
takebasedon the results ofthetestor inspec-
tion in the procedural step or sub-step it fol-
lows.
In most chapters an exploded view illustration
of the system components follows the Table of
Contents. In these illustrations you will find the
instructionsindicating which parts require specified tightening torque, oil, grease or a locking
agent during assembly.
Page 10
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Page 11
GENERAL INFORMATION 1-1
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General Information
Table of Contents
Before Servicing.....................................................................................................................1-2
Model Identification.................................................................................................................1-7
General Specifications............................................................................................................1-8
Unit Conversion Table ............................................................................................................1-11
1
Page 12
1-2 GENERAL INFORMATION
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Before Servicing
Before starting to perform an inspection service or carry out a disassembly and reassembly operation on a vehicle, read the precautions given below. To facilitate actual operations, notes, illustrations, photographs, cautions, and detailed descriptions have been included in each chapter wherever
necessary. This section explains the items that require particular attention during the removal and
reinstallation or disassembly and reassembly of general parts.
Especially note the following:
Battery Ground
Before completing any service on the vehicle, disconnect
thebatterywires from the battery topreventtheengine from
accidentally turning over. Disconnect the ground wire (–)
first and then the positive (+). When completed with the
service, first connect the positive (+) wire to the positive
(+) terminal of the battery then the negative (–) wire to the
negative terminal.
Edges of Parts
Lift large or heavy parts wearing gloves to prevent injury
from possible sharp edges on the parts.
Solvent
Use a high-flush point solvent when cleaning parts. High
-flush point solvent should be used according to directions
of the solvent manufacturer.
Cleaning vehicle before disassembly
Clean the vehicle thoroughly before disassembly. Dirt or
otherforeign materials enteringintosealed areas during vehicle disassembly can causeexcessive wear and decrease
performance of the vehicle.
Page 13
Before Servicing
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Arrangement and Cleaning of Removed Parts
Disassembled parts are easy to confuse. Arrange the
parts according to the order the parts were disassembled
and clean the parts in order prior to assembly.
Storage of Removed Parts
After all the parts includingsubassembly parts have been
cleaned, store the parts in a clean area. Put a clean cloth
or plastic sheet over the parts to protect from any foreign
materials that may collect before re-assembly.
GENERAL INFORMATION 1-3
Inspection
Reuse of worn or damaged parts may lead to serious accident. Visually inspect removed parts for corrosion, discoloration, or otherdamage. Refer to the appropriate sections
of this manual for service limits on individual parts. Replace
the parts if any damage has been found or if the part is beyond its service limit.
Replacement Parts
Replacement Parts must be KAWASAKI genuine or
recommended by KAWASAKI. Gaskets, O-rings, Oil seals,
Grease seals, circlips or cotter pins must be replaced with
new ones whenever disassembled.
Assembly Order
In most cases assembly order is the reverse of disassembly, however, if assembly order is provided in this Service
Manual, follow the procedures given.
Page 14
1-4 GENERAL INFORMATION
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Before Servicing
Tightening Sequence
Generally, when installing a part with several bolts, nuts,
or screws, start them all in their holes and tighten them to
a snug fit. Then tighten them according to the specified sequence to prevent case warpage or deformation which can
lead to malfunction. Conversely when loosening the bolts,
nuts, or screws, first loosen all of them by about a quarter turn and then remove them. If the specified tightening
sequence is not indicated, tighten the fasteners alternating
diagonally.
Tightening Torque
Incorrect torque applied to a bolt, nut, or screw may
lead to serious damage. Tighten fasteners to the specified
torque using a good quality torque wrench.
Often, the tightening sequence is f ollowed twice initial
tightening and final tightening with torque wrench.
Force
Use common sense during disassembly and assembly,
excessiveforcecan cause expensive or hard to repair damage. When necessary, remove screws that have a non
-permanent locking agent applied using an impact driver.
Use a plastic-faced mallet whenever tapping is necessary.
Gasket, O-ring
Hardening, shrinkage, or damage of both gaskets
and O-rings after disassembly can reduce sealing performance.Remove old gaskets and clean the sealing
surfaces thoroughly so that no gasket material or other
material remains. Install new gaskets and replace used
O-rings when re-assembling.
Liquid Gasket, Locking Agent
For applications that require Liquid Gasket or a
Non-Permanent Locking Agent, clean the surfaces so
that no oil residue remains before applying liquid gasket
or locking agent. Do not apply them excessively. Excessive application can clog oil passages and cause serious
damage.
Page 15
Before Servicing
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Press
For items such as bearings or oil seals that must be
pressed into place, apply small amount of oil to the contact area. Be sure to maintain proper alignment and use
smooth movements when installing.
Ball Bearing and Needle Bearing
Do not remove pressed ball or needle unless removal is
absolutely necessary. Replace with new ones whenever
removed. Press bearings with the manufacturer and size
marks facing out. Press the bearing into place by putting
pressure on the correct bearing race as shown.
Pressing the incorrect race can cause pressure between
the inner and outer race and result in bearing damage.
GENERAL INFORMATION 1-5
Oil Seal, Grease Seal
Donot remove pressedoil or greasesealsunless removal
is necessary. Replace with new ones whenever removed.
Press new oil seals with manufacture and size marks facing
out. Make sure the seal is aligned properly when installing.
Apply specified grease to the lip of seal before installing
the seal.
Circlips, Cotter Pins
Replacecirclips orcotterpins thatwere removed withnew
ones. Take care not to open the clip excessively when installing to prevent deformation.
Page 16
1-6 GENERAL INFORMATION
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Before Servicing
Lubrication
It is important to lubricate rotating or sliding parts during
assembly to minimize wear during initial operation. Lubrication points are called out throughout this manual, apply
the specific oil or grease as specified.
Direction of Engine Rotation
When rotating the crankshaft by hand, the free play
amount of rotating direction will affect the adjustment. Rotate the crankshaft to positive direction (clockwise viewed
from output side).
Electrical Wires
A two-color wire is identified firstby the primary color and
then the stripe color. Unless instructedotherwise, electrical
wires must be connected to those of the same color.
Page 17
Model Identification
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KVF750-A1 Left Side View
GENERAL INFORMATION 1-7
KVF750-A1 Right Side View
The KVF750–B1 is a camouflage-surface-treated model and identical to the KVF750–A1, the base
model, in every other aspect: controls, features, and specifications.
Page 18
1-8 GENERAL INFORMATION
Property of www.SmallEngineDiscount.com - Not for Resale
General Specifications
ItemsKVF750-A1, B1
Dimensions
Overall Length2 192 mm (86.30 in.)
Overall Width1 177 mm (46.34 in.)
Overall Height1 249 mm (49.17 in.)
Wheelbase1 283 mm (50.51 in.)
Ground Clearance:269 mm (10.59 in.)
Seat Height935 mm (36.81 in.)
Dry Mass274 kg (604 lb), (EUR) 274.5 kg (605 lb)
Curb Mass:
Front147.5 kg (325 lb), (EUR) 148 kg (326 lb)
Rear149 kg (329 lb)
TB: Apply a non-permanent locking agent (Three Bond TB1363A, Red).
Fastener
Fuel System
Idle Adjusting Screw Bracket Bolt8.80.9078 in·lb
Element Cover Screw3.50.3531 in·lb
Element Holder Screws3.50.3531 in·lb
Clamp Bracket Bolt9.81.087 in·lb
Fuel Pump Mounting Nuts7.80.8069 in·lb
Fuel Tap Plate Screws0.80.087in·lb
Fuel Tap Mounting Bolts4.90.5043 in·lb
Fuel Tap Cover Screws9.81.087 in·lb
Fuel Tap Bracket Bolts7.80.8069 in·lb
Fuel Level Sensor Mounting Bolts2.00.2018 in·lb
Cooling System
Radiator Mounting Bolts8.80.9078 in·lb
Radiator Fan Switch181.813
Radiator Fan Assembly Bolts4.90.5043 in·lb
Thermostat Housing Cover Bolts8.80.9078 in·lb
Coolant Temperature Warning Light Switch6.90.7061 in·lbSS
Air Bleeder Bolt8.80.9078 in·lb
Water Pump Cover Bolts8.80.9078 in·lb
Coolant Drain Plug8.80.9078 in·lb
Water Pump Impeller7.80.8069 in·lb
Water Pipe Mounting Bolts8.80.9078 in·lb
Engine Top End
Rocker Case Bolts 55 mm (2.2 in.)
Rocker Case Bolts 130 mm (5.1 in.)9.81.087 in·lbS
Rocker Case Bolts 30 mm (1.2 in.)9.81.087 in·lbS
Rocker Case Bolts 25 mm (1.0 in.)9.81.087 in·lbS
Cylinder Head B olts (M10), first torque252.518S, MO
Cylinder Head Bolts (M10), final torque495.036S
Cylinder Head Bolts (M6)9.81.087 in·lb
N·mkgf·mft·lb
8.80.9078 in·lb
Torque
Remarks
S
Page 28
2-6 PERIODIC MAINTENANCE
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Connecting Rod Big End Cap Nuts343.525MO
Engine Drain Plug202.014
Crankcase Bolts (M8) 75 mm (2.95 in.)202.014S
Crankcase Bolts (M8) 110 mm (4.33 in.)202.014S
Crankcase Bolt (M8) 110 m m (4.33 in.)202.014S, L(1)
Crankcase Bolts (M6) 40 mm (1.57 in.)9.81.087 in·lb
Crankcase Bolts (M6) 65 mm (2.56 in.)9.81.087 in·lb
Bearing Position Plate Screws4.90.5043 in·lbL
Grip Hold Nut9.81.087 in·lb
Shift Lever Assembly Bracket Bolts202.014
Tie-rod End Front Locknut9.81.087 in·lbLh
Tie-Rod End Rear Locknut9.81.087 in·lb
Tie-rod End Nut202.014
Shift Lever Assembly Nut202.014
Tie-rod End Bolt9.81.087 in·lb
Shift Shaft Positioning Bolt252.518
Shift Shaft Spring Bolt252.518L
Shift Shaft Cover Bolts8.80.9078 in·lb
Tie-rod End Locknut202.014
Neutral Position Switch151.511
Reverse Position Switch151.511
Wheel/Tires
Tie-rod Locknuts373.827
Tie-rod End Nuts424.331
Wheel Nuts (First Torque)151.511S
Wheel Nuts (Final Torque)767.856S
Front Axle Nuts19720145
Rear Axle Nuts26527195
Variable Differential Control Shift Shaft Lever Bolt
N·mkgf·mft·lb
262.720
15716116L
8.80.9078 in·lb
Torque
Remarks
Page 30
2-8 PERIODIC MAINTENANCE
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Torque and Locking Agent
Fastener
Front Final Gear Case Left Cover Bolts (M6)9.81.087 in·lbL
Ring Gear Bolts575.842LB
Front Final Gear Case Center Cover Bolts (M6)9.81.087 in·lbL
Front Final Gear Case Center Cover Bolts (M8)242.417L
Front Final Gear Case Oil Filler Cap293.022
Pinion Gear Bearing Holder Nut1271394St
Pinion Gear Bearing Holder13714101L
Front Final Gear Case Coupling Nut252.518
Front Final Gear Case O il Drain Plug151.511
2WD/4WD Actuator Mounting Bolts
Variable Differential Control Cable Locknut171.712
Variable Differential Control Lever Bolt–––L
Front Final Gear Case Nuts596.043
(Rear Final Gear Case)
Rear Final G ear Case Front Cover Bolts242.417
Gasket Screws130.1311 in·lb
Pinion Gear Bearing Holder Nut15716116L
Pinion Gear Bearing Holder13714101L
Rear Final Gear Case Right Cover Bolts (M12)939.569L
Rear Final Gear Case Right Cover Bolts (M10)495.036L
Rear Final Gear Case Right Cover Bolts (M8)242.417L
Rear Final Gear Case Oil Filler Cap
Rear Final Gear Case Oil Drain Plug131.3113 in·lb
Bracket Bolts596.043
Rear Final Gear Case Nuts
Brakes
Reservoir Cap Screws1.50.1513 in·lb
Brake Lever Pivot Bolt6.00.6053 in·lb
Brake Lever Pivot Bolt Locknut6.00.6053 in·lb
Master Cylinder Clamp Bolts9.00.9280 in·lbS
Bake Hose Banjo Bolt252.518
Brake Caliper Mounting Bolts252.518
Bleed Valves5.40.5548 in·lb
Brake Disc Mounting Bolts373.827L
Caliper Holder Shaft171.713
Pad Mounting Bolts171.713
Variable Differential Control Lever Bolt–––L
Gasket Screws–––L
Suspension
Front Shockabsorber Mounting Nuts343.525
Front Suspension Arm Pivot Nuts424.331
Front Knuckle Joint Nuts293.022
Rear Shockabsorber Mounting Nuts343.525
N·mkgf·mft·lb
9.81.087 in·lb
293.022
727.353TB
Torque
Remarks
L, S
Page 31
Torque and Locking Agent
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Property of www.SmallEngineDiscount.com - Not for Resale
Torque and Locking Agent
Fastener
N·mkgf·mft·lb
Radiator Fan Switch181.813
Coolant Temperature Warning Light Switch6.90.7061 in·lbSS
Oil Pressure Switch151.511SS
Oil Pressure Switch Terminal Bolt1.50.1513 in·lb
Regulator/Rectifier M ounting Bolts8.80.9078 in·lb
Fuel Level Sensor Mounting Bolts2.00.2018 in·lb
The tables below, relating tightening torque to thread diameter, lists the basic torque for the bolts
and nuts. Use this table for only the bolts and nuts which do not require a specifictorque value. All of
the values are for use with dry solvent-cleaned threads.
Torque
Remarks
Basic Torque for General Fasteners of Engine Parts
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Specifications
ItemStandardService Limit
Fuel System
Throttle Lever Free Play2 ∼ 3 mm (0.08 ∼ 0.12 in.)–––
Choke Lever Free Playabout 3 mm (0.12 in.)–––
Idle Speed1 150 ± 50 r/min (rpm)–––
Air Cleaner Element OilHigh-quality foam air filter oil
Cooling System
Coolant:
Type (Recommended)Permanent type antifreeze–––
ColorGreen–––
Mixed RatioSoft water 50%, Coolant 50%–––
Freezing Point−35°C (−31°F)–––
Total Amount2.2 L (2.3 US qt.)–––
Engine Top End
Valve Clearance:
Exhaust0.20 ∼ 0.25 mm (0.0079 ∼ 0.0098 in.)–––
Inlet0.10 ∼ 0.15 m m (0.0039 ∼ 0.0059 in.)–––
Converter System
Belt Width29.7 ∼ 30.3 mm (1.169 ∼ 1.193 in.)28.0 mm (1.102 in.)
Belt Deflection22 ∼ 27 mm (0.87 ∼ 1.06 in.)–––
Actuator Lever Guide Shoe Wear
Engine Lubrication System
Engine Oil:
TypeAPI SF or SG–––
ViscositySAE10W-40–––
Capacity2.1 L (2.2 US qt)–––
Wheels/Tires
Tire Tread Depth:
Front–––3 mm (0.12 in.)
Rear–––
Standard tire:
FrontAT 25 × 8-12–––
RearAT 25 × 10-12–––
–––
API SH or SJ with JASO MA class–––
(When filter is not removed)
2.2 L (2.3 US qt)–––
(When filter is removed)
2.6 L (2.7 US qt)–––
(When engine is completely dry)
DUNLOP, KT191, Tubeless
DUNLOP, KT195, Tubeless–––
–––
6 mm (0.24 in.)
4 mm (0.16 in.)
–––
Page 34
2-12 PERIODIC MAINTENANCE
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Specifications
ItemStandardService Limit
Final Drive
Front Final Gear Case:
Gear Case Oil:
TypeAPI SF or SG–––
API SH or SJ of JASO MA class–––
ViscositySAE 10W-40–––
Oil LevelFiller opening bottom–––
Capacity0.40 L (0.42 US qt)–––
Rear Final Gear Case:
Gear Case Oil:
Type
Oil levelFiller opening bottom–––
Capacity0.72 L (0.76 US qt)–––
Brakes
Front Brake Fluid:
TypeDOT 3 or DOT 4–––
Front Disc Brake:
Pad Lining Thickness4mm(0.16in.)1 mm (0.04 in.)
Rear Brake Lever, Pedal and
Cables:
Rear Brake Lever Free Play1 ∼ 2 mm (0.04 ∼ 0.08 in.)–––
Brake Pedal Free Play15 ∼ 25 mm (0.6 ∼ 1.0 in.)–––
Property of www.SmallEngineDiscount.com - Not for Resale
PERIODIC MAINTENANCE 2-13
Oil Filter Wrench:
57001-1249
Carburetor Drain Plug Wrench, Hex 3:
57001-1269
Flywheel & Pulley Holder:
57001-1343
Filler Cap Driver:
57001-1454
Pulley Holder Attachment:
57001-1472
Page 36
2-14 PERIODIC MAINTENANCE
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Periodic Maintenance Procedures
Fuel System
Throttle Lever Free Play Inspection
Check that the throttle lever [A] moves smoothly from full
•
open to close, and the throttle closes quickly and completely in all steering positions by the return spring.
If the throttle lever does not return properly, check the
throttle cable routing, lever free play, and cable damage.
Then lubricate the throttle cable.
Run the engine at the idle speed, and turn the handlebar
•
allthe waytothe rightandlefttoensure thattheidle speed
does not change.
If the idle speed increases, check the throttle lever free
play and the cable routing.
Stop the engine and check the throttle lever free play [B].
•
If the free play is not within the specifiedrange, adjust the
cable.
Throttle Lever Free Play
Standard:2 ∼ 3 mm (0.08 ∼ 0.12 in.)
Throttle Lever Free Play Adjustment
Remove the handle cover (see Multifunction Meter Unit
•
Removal in the Electrical System chapter).
Slide the rubber cover offthe adjusterat the throttle case.
•
Loosen the locknut [A] and turn the throttle cable upper
•
adjuster [B] until the cable has proper amount of play.
Tighten the locknut and reinstall the rubber cover.
•
If the free play cannot be adjusted by using the upper cable adjuster, remove the left side cover (see Frame chapter) and then use t he cable adjusting nuts [A] at the lower
end of the throttle cable and make the necessary free
play.
Choke Lever Free Play Inspection
Check if the choke lever [A] returns properly and if the
•
inner cable slides smoothly.
Make sure that the choke lever returns to its released po-
•
sition all the way.
To determine the amount of choke cable play at the lever,
•
pull the choke lever to the leftuntil feeling the operationof
the lever tough; the amount of choke lever is equivalent
to that of cable play.
The proper amount of play ranges about 3 mm (0.12 in.)
•
at the choke lever.
If the free play is not within the specifiedrange, adjust the
cable.
ChokeLeverFreePlay[B]
Standard:about 3 mm (0.12 in.)
Page 37
Periodic Maintenance Procedures
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Choke Lever Free Play Adjustment
Remove:
•
Handlebar Cover Screws [A]
Remove:
•
Handlebar Cover Screws [A]
Handlebar Cover Front [B]
PERIODIC MAINTENANCE 2-15
Loosen the locknut [A] of the choke cable.
•
Turn the adjuster [B] until the cable has proper amount of
•
play.
Tighten the l ocknut securely.
•
Idle Speed Inspection
Start the engine and warm it up thoroughly.
•
With the engine idling, turn the handlebar to both sides to
•
check for any changes in the idle speed.
If handlebar movement changesthe idle speed, the throttle cable may be improperly adjusted incorrectly routed,
or damaged. Be sure to correct any of these conditions
before riding.
WARNING
Operation with improperly adjusted, incorrectly
routed, or damaged cables could result in an unsafe riding condition.
Check idle speed with a suitable tachometer.
•
If theidlespeedisout of the specified range, adjust it (see
Idle Speed Adjustment).
Idle Speed
Standard:1 150 ± 50 r/min (rpm)
Page 38
2-16 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Idle Speed Adjustment
Start the engine and warm it up thoroughly.
•
Turn the idle adjusting screw [A] until the idle speed is
•
correct.
Open and close the throttle a few times to make sure that
○
the idle speed is within the specified range.
Fuel System Cleanliness Inspection
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch O FF. Do not smoke. Make sure the area is
well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
Remove the check valve [A] at the end of the carburetor
•
overflow hose [B].
Run the lower end of the carburetor overflow hose to a
•
suitable container.
Turn out the carburetor drain plugs [A] a few turns and
If any water or dirt appears during the above inspection,
clean the fuel system (carburetor, fuel pump, fuel tank,
fuel hose).
Page 39
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Air Cleaner Element Cleaning and Inspection
NOTE
In dusty areas, the element should be cleaned more
○
frequently than the recommended interval.
After riding through rain or muddy terrains, the element
○
should be cleaned immediately.
Also, if there is a break in the element material or any
○
other damage to the element, replace the element with
a new one.
WARNING
Clean the element in a well-ventilated area, and
take care that there are no sparks or flame anywhere near the working area; this includes any
appliance with a pilot light. Because of the danger
of highly flammable liquids, do not use gasoline or
a low-flash point solvent to clean the foam element.
Remove the air cleaner element (see Fuel System chap-
•
ter).
PERIODIC MAINTENANCE 2-17
Clean the element [A] in a bath of high-flash pointsolvent.
•
Squeeze it dry in a clean towel [A]. Do not wring the ele-
•
ment or blow it dry; the element can be damaged.
Inspect the element for damage.
•
If it is torn, punctured, or hardened, replace it.
After cleaning, saturate the element with a high-quality
•
foam-air-filter oil, squeeze out the excess oil, then wrap
it in a clean rag and squeeze it as dry as possible. Be
careful not to tear the element.
Air Cleaner Draining
If any water or oil accumulates in the tube, drain it by
•
takingoff thetubeplug [A].Afterdraining, besureto install
the tube plug and clamp firmly.
Page 40
2-18 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Fuel Hose and Connection Inspection
The fuel hoses are designed to be used throughout the
○
vehicle life without any maintenance, however, if the vehicle is not properly handled, the pressure inside the fuel
line can cause fuel to leak [A] or the hose to burst. Check
the fuel hose.
Replace the fuel hose if any fraying, cracks [B] or bulges
[C] are noticed.
Check that the hoses aresecurelyconnected and clamps
•
are installed correctly.
When installing the fuel hoses, route the hoses according
•
toCable, Wire, and Hose Routing section in the Appendix
chapter.
When installingthe fuel hoses, avoidsharp bending, kink-
•
ing, flattening or twisting, and route the fuel hoses with a
minimum of bending so that the fuel flow w ill not be obstructed.
Replace the hose if it has been sharply bent or kinked.
Fit the fuel hose [A] onto the fitting fully and install the
•
plate clamp [B] beyond the raised rib [C].
1 ∼ 2 mm (0.0039 ∼ 0.0078 in.) [D]
The hose end must reach the fillet [E] or be as near as
○
possible to the step [F].
Fit the fuel pump inlet hoses onto the Y-joint fully until
○
each end of the inlet hose touches the second raised rib.
Fuel Hose Replacement
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch O FF. Do not smoke. Make sure the area is
well ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
Remove:
•
Right Side Cover (see Frame chapter)
Electric Parts Case (see Frame chapter)
Rear Fender (see Frame chapter)
Turn the fuel tap to the ON position.
•
Page 41
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Remove:
•
Clamps [A]
Fuel Hoses [B]
Replace the fuel hoses with new ones.
•
When installing the fuel hose, route the hose according
•
to Cable, Wire, and Hose Routing section in Appendix
chapter.
When installing the fuel hose, avoid sharp bending, kink-
•
ing, flattening or twisting, and route the fuel hose with a
minimum of bending so that the fuel flow will not be obstructed.
Fit the fuel hose onto the pipe fully and install the clamps
•
beyond the raised rib (see Fuel Hose and Connection Inspection).
PERIODIC MAINTENANCE 2-19
Cooling System
Radiator Cleaning
CAUTION
Clean the radiator screen and the radiator in accordance with the P eriodic Maintenance Chart.
In dusty areas, they should be cleaned more frequently than the recommended interval.After
riding through muddy terrains, the radiator screen
and the radiator should be cleaned immediately.
Remove:
•
Front Guard (see Frame chapter)
Front Fender (see Frame chapter)
Radiator Screen Mounting Screws [A]
Radiator Screen [B]
Clean the radiator screen in a bath of tap water, and then
•
dry it with compressed air or by shaking it.
Clean the radiator.
•
CAUTION
When cleaning the radiator w ith steam cleaner, be
careful of the following to prevent radiator damage.
Keep the steam gun away more than 0.5 m (20 in.)
from the radiator core [A].
Hold the steam gun perpendicular to the core surface.
Run the steam gun following the core fin direction.
Page 42
2-20 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Radiator Hose and Connection Inspection
The high pressure inside the radiator hose can cause
○
coolant to leak [A] or the hose to burst if the line is not
properly maintained. Visually inspect the hoses for signs
of deterioration. Squeeze the hoses. A hose should not
be hard and brittle, nor should it be soft or swollen.
Replace the hose if any fraying, cracks [B] or bulges [C]
are noticed.
Check that the hoses aresecurelyconnected and clamps
•
are tightened correctly.
Coolant Change
WARNING
To avoid burns, do not remove the radiator cap or
try to change the coolant when the engine is still
hot. Wait until it cools down.
Coolant on tires will make them slippery and can
cause an accident and injury. Immediately wash
away any coolant that spills on the frame, engine,
or wheels.
Since coolant is harmful to the human body, do not
use for drinking.
Remove:
•
Left Footboard (see Frame chapter)
Front Fender (see Frame chapter)
Radiator Cover Screws [A] and Collars
Remove:
•
Radiator Cover Screws [A] and Collars
Radiator Cover [B]
Page 43
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Remove:
•
Clamp [A]
Reserve Tank Screws [B]
Reserve Tank [C] with Hose
Remove the reserve tank cap, and pour the coolant into
•
a container.
Place a container under the drain plug [A] at the bottom
•
of the water pump [B], then remove the drain plug.
PERIODIC MAINTENANCE 2-21
Remove the radiator cap [A] in two steps. First turn the
•
capcounterclockwiseto thefirststep. Thenpushand turn
it further in the same direction and remove the cap.
The coolant will drain from the radiator and engine.
•
Place a container under the drain plug [A] at the front
•
cylinder, then remove the drain plug.
Placeacontainer under the drainplug[A] at the rearcylin-
•
der, then remove the drain plug.
Page 44
2-22 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Support the vehicle on a stand orthe jack so that the front
•
wheelsare offtheground. Thism akes air bleedingeasier.
Fill the r adiator up to the radiator filler neck [A] with
•
coolant.
NOTE
Pour in the coolant slowly so that the air in the engine
○
and radiator can escape.
CAUTION
Soft or distilled water must be used with the antifreeze in the cooling system.
If hard water is used in the system, it causes scale
accumulation in the water passages, considerably
reducing the efficiency of the cooling system.
Water and Coolant Mixture Ratio (when shipping)
Soft Water:50%
Coolant:50%
Freezing Point:
Total Amount:
−35°C (−31°F)
2.2 L (2.3 US qt)
NOTE
Choose a suitable mixture ratio by referring to the
○
coolant manufacturer’s directions.
Bleed the air from the cooling system as follows.
•
Start t he engine with the r adiator cap removed and run it
○
until no more air bubbles [A] can be seen in the coolant.
Tap the radiator hoses to force any air bubbles caught
○
inside.
Stop the engine and add coolant up to the radiator filler
○
neck.
Install the radiator cap.
•
Remove the reserve tank cap.
•
Fill the reserve tank up to the F mark [A] with coolant and
•
install the cap.
Start the engine, warm it up thoroughly until the radiator
•
fan turns on and then stop the engine.
Check the coolant level in the reserve tank after the en-
•
gine cools down.
If the coolant level is lower than the low level line, add
coolant to the full level line.
CAUTION
Do not add more coolant above the full level line.
Page 45
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Engine Top End
Valve Clearance Inspection
NOTE
Check the valve clearance onlywhen the engine is cold
○
(at room temperature).
Remove:
•
Left Side Cover (see Frame chapter)
Battery Case (see Frame chapter)
Valve Adjusting Caps [A]
Recoil Starter (see Recoil Starter chapter)
Remove the timing inspection plug [A].
•
Special Tool - Filler Cap Driver [B]: 57001-1454
PERIODIC MAINTENANCE 2-23
Turn the crankshaft counterclockwise with a wrench on
•
the alternator rotor bolt until “T-F” mark [A] on the alternator rotor aligns with the notch [B] as shown: the end of
the compression stroke in the front cylinder head.
Measure the clearance for all four valves, one at a time
•
between the end of the valve stem and the adjusting
screw [A] with the thickness gauge [B].
Valve Clearance (when cold)
Exhaust:
Inlet:
If the valve clearance is not correct, adjust it (see Valve
Clearance Adjustment).
0.20 ∼ 0.25 mm (0.0079 ∼ 0.0098 in.)
0.10 ∼ 0.15 mm (0.0039 ∼ 0.0059 in.)
Page 46
2-24 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Then, turn the crankshaft counterclockwise with a
•
wrench on the alternator rotor bolt until “T-R” mark [A] on
the alternator rotor aligns with the notch [B] as shown:
the end of the compression stroke in the rear cylinder
head.
Measure the clearance for all four valves, one at a time
•
between the end of the valve stem and the adjusting
screw with the thickness gauge.
Valve Clearance (when cold)
Exhaust: 0.20 ∼ 0.25 mm (0.0079 ∼ 0.0098 in.)
Inlet:
If the valve clearance is not correct, adjust it (see Valve
Clearance Adjustment).
Valve Clearance Adjustment
Remove the valve adjusting caps.
•
Loosen the locknut and turn the adjusting screw until the
•
clearance is correct.
Hold the adjusting screw [A] from turning and tighten the
•
locknut [B].
T orque - Valve Adjusting Screw Locknuts: 12 N·m (1.2
Recheck the clearance.
•
If the clearance is incorrect, repeat theadjustment procedure.
If the clearance is correct, perform the adjustment procedure on the other valve.
0.10 ∼ 0.15 mm (0.0039 ∼ 0.0059 in.)
kgf·m, 104 in·lb)
Spark Arrester Cleaning
WARNING
To avoid burns, wear gloves while cleaning the
spark arrester. Since the engine must be run during this procedure, the muffler will become hot.
Remove the drain plug [A] on the muffler.
•
In an open area away from combustible materials, start
•
the engine w ith the transmission in neutral.
Raise and lower engine speed while tapping on the muf-
•
fler with a rubber mallet until carbon particles are purged
from the muffler.
WARNING
Do not run the engine in a closed area. Exhaust
gases contain carbon monoxide; a colorless, odorless, poisonous gas. Breathing exhaust gas leads
to carbon monoxide poisoning, asphyxiation, and
death.
Stop the engine.
•
Install the drain plug.
•
Page 47
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Converter System
Drive Belt Inspection
Inspection of the drive belt is required at least every 90
days of vehicle use (average 12 mile/day) not to exceed 1
700 km (1 100 mile) or beltindicator light turn on (100hours
ofuse) countedbythe hourmeter. Morefrequent inspection
is necessary if the vehicle is subjected to hard usage.
WARNING
Neglect, abuse, or failure to maintain the transmis-
sion can result in a severely worn or damaged drive
belt locking up the transmission and wheels. This
can cause the operator to lose control and have an
accident resulting in injury or death.
Remove the torque converter cover (see Converter Sys-
•
tem chapter).
Measure the width [A] of the belt at several locations with
•
a pair of suitable straightedges [B] as shown.
Ifanymeasurementsexceedtheservicelimit, replace the
belt.
PERIODIC MAINTENANCE 2-25
Belt Width
Standard:29.7 ∼ 30.3 mm (1.169 ∼ 1.193 in.)
Service Limit: 28.0 mm (1.102 in.)
Check the belt [A] for abnormal wear [B].
•
Measure the width [C] of the belt at abnormal wear point.
○
If any measurements exceed 0.5 mm (0.02 in.), replace
the belt.
When using the belt of large abnormal wear, the drive belt
○
failure detection switch could be activated.
Check the belt for cracks, breaks, or peeling.
•
If necessary, replace the belt with a new one.
Belt [A]
Crack [B]
Broken [C]
Peeling [D]
NOTE
Whenever the belt is replaced, inspect the drive and the
○
driven pulleys.
Drive Belt Deflection Inspection
Remove the torque converter cover (see Converter Sys-
•
tem chapter).
Putthe transmission inneutral and rotatethe drivenpulley
•
by hand to make sure the belt is shifted all the way to the
top of the driven pulley.
Page 48
2-26 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Measure the belt deflection [A] as shown:
•
Place a straightedge [B] on top of the belt between the
○
drive pulley [ C] and the driven pulley [D].
Use a ruler to push the belt away from the straightedge.
○
Push hard, but with no more force than 59N (6kgf, 13lb).
Belt Deflection
Standard:22 ∼ 27 mm (0.87 ∼ 1.06 in.)
If the belt deflection is not within the specified range, adjust the deflection by adding or removing spacers on the
fixed sheave of the driven pulley.
When adjusting the deflection, less is better than more.
•
Less deflection will maintain better performance for more
time as the belt width decreases by normal wear, which
causes the deflection to increase with usage.
Drive Belt Deflection Adjustment
Disassemble the driven pulley (see Converter System
•
chapter).
Ifthe belt deflectionis more than27mm (1.06 in.), remove
the spacers to decrease it.
Therule-of-thumb is: 0.1mm(0.004in.) changein spacer
○
thickness equals about 1.3 mm (0.051 in.) change in belt
deflection.
If the adjustment cannot be done within the specified
range even if the shim is removed, replace the drive belt.
If the belt deflection is less t han 22 mm (0.87 in.), add the
spacers [A] to increase it.
Therule-of-thumb is: 0.1mm(0.004in.) changein spacer
○
thickness equals about 1.6 mm (0.063 in.) change in belt
deflection.
NOTE
When using the plural spacers, install the thick spacer
○
to the movable sheave side and thin spacer to the fixed
sheave side.
Spacers
Part No.Thickness
92026-0034
92026-1569
92026-1617
92026-1565
92026-15701.4 mm (0.055 in.)
0.3 mm (0.012 in.)
0.6 mm (0.024 in.)
0.8 mm (0.032 in.)
1.0 mm (0.039 in.)
Page 49
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Assemble the drivenpulley (see Converter System chap-
•
ter).
With the transmission in neutral, rotate the driven pulley
•
to allow the belt to return to the top of the sheaves before
measuring the belt deflection.
Measure the belt deflection again and repeat the above
•
procedures until it is within the standard range.
Using the flywheel & pulley holder and pulley holder at-
•
tachment, tighten the driven pulley nut.
Special Tools- Flywheel & Pulley Holder: 57001-1343
If the tire is cut or cracked, replace it.
Lumps or high spots on the tread or sidewalls indicate
○
internal damage requiring tire replacement.
Remove any foreign objects from the tread. After re-
○
moval, check for leaks with a soap and water solution.
Measure the tread depth at the center of the tread with a
•
depth gauge [A]. Since the tire may wear unevenly, take
measurements at several places.
If any measurements are less than the service limit, replace the tire.
Tire Tread Depth
Service Limit:
Front:3 mm (0.12 in.)
Rear:4 mm (0.16 in.)
Standard Tire
Front:AT 25 × 8 - 12
DUNLOP, KT191, Tubeless
Rear:AT 25 × 10 - 12
DUNLOP, KT195, Tubeless
Page 51
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Final Drive
Variable Differential Control Lever Play Inspection
Pull the variable differential control lever [A] towards the
•
handlebar grip [B] with a spring scale until it reads 30 N
(3 kgf, 7 lb) of force.
The differentialcontrol in the front final gear casemust be
○
locked, then the clearance [C] between the control lever
and grip should be 20 mm (0.8 in.).
If the clearance is not the specified length, adjust the cable.
Differential Control Lever Lock Position Length
Standard:20 mm (0.8 in.)
Variable Differential Control Lever Play Adjustment
Remove:
•
Handlebar Cover Screws [A]
PERIODIC MAINTENANCE 2-29
Remove:
•
Handlebar Cover Screws [A]
Handlebar Cover Front [B]
Loosen the locknut [A] of the differential control cable.
•
Turn the adjuster [B] until the cable has proper amount of
•
play.
Tighten the l ocknut securely.
•
Page 52
2-30 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Front Final Gear Case Oil Change
Warm up the oil by running the vehicle so that the oil will
•
pick up any sediment and drain easily. Then stop the
vehicle.
Park the vehicle so that it is level, both side-to-side and
•
front-to-rear.
Remove the front side cover (see Frame chapter).
•
Place an oil pan beneath the front final gear case and
•
remove the drain plug [A].
WARNING
When draining or filling the final gear case, be careful that no oil gets on the tire or rim. Clean off any
oil that inadvertently gets on them with a high-flash
point solvent.
After the oil has completely drained out, install the drain
Property of www.SmallEngineDiscount.com - Not for Resale
Rear Final Gear Case Oil Change
Warm up the oil by running the vehicle so that the oil will
•
pick up any sediment and drain easily. Then stop the
vehicle.
Park the vehicle so that it is level, both side-to-side and
•
front-to-rear.
Place an oil pan beneath the rear final gear case and
•
remove the drain plug [A].
WARNING
When draining or filling the final gear case, be careful that no oil gets on the tire or rim because oil will
deteriorate the tire. Clean off any oil that inadvertently gets on them with a high-flash point solvent.
After the oil has completely drained out, install the drain
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Universal Joint Lubrication
Remove:
•
Rear Propeller Shaft (see Final Drive chapter)
Force grease into the grease nipples [A] until the grease
•
comes out from the nipple, and wipe off any excess
grease.
[B] Grease Gun
Brakes
Front Brake Pad Wear Inspection
Check the lining thickness [A] of the pads in each caliper.
•
If the lining thickness of either pad is less than the service
limit [B], replace both pads in the caliper as a set.
Pad Lining Thickness
Standard:4 mm (0.16 in.)
Service Limit: 1 mm (0.04 in.)
Front Brake Hoses and Connections Inspection
Inspect the brake hose and fittings for deterioration,
•
cracks and signs of leakage.
Thehighpressureinsidethebrakelinecancausefluidto
○
leak [A]orthehose to burstifthelineis notproperly maintained. Bend and twist the rubber hose while examining
it.
Replace the hose i f any cracks [B] or bulges [C] are noticed.
Tighten any loose fittings.
•
Page 55
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Front Brake Hose Replacement
Pump the brake fluid out of the line as explained in the
•
Brake Fluid Change.
Remove the banjo bolts at both ends of the brake hose,
•
and pull the hose off the vehicle.
Immediately wipe up any brake fluid that spills.
•
CAUTION
Brake fluid quickly ruins painted surfaces; any
spilled fluid should be completely w ashed away
immediately.
Use a new flat washer for each side of the hose fittings.
•
Install the new brake hose in its place (see Appendix
Position the reservoir horizontal, and check that the fluid
•
level in the reservoir is higherthan the lower level line[A].
If the fluid level is lower than the lower level line, check
for fluid leakage of the brake line, and add the fluid as
follows:
PERIODIC MAINTENANCE 2-33
Remove the reservoir cap, and fill the reservoir to the up-
○
per level line [A] in the reservoir with the same type and
brand of the fluidthat is already in thereservoir. And then
install the reservoir cap.
WARNING
Change the fluid in the brake line completely if the
fluid must be refilled but the type and brand of the
fluid that is already in the reservoir are unidentified.
Tighten:
•
T orque - Reservoir Cap Screws: 1.5 N·m (0.15 kgf·m, 13
in·lb)
Page 56
2-34 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Brake Fluid Change
Removethe reservoircapand therubbercap onthebleed
•
valve.
Attach a clear plastic hose to the bleed valve on the
•
caliper, and run the other end of the hose into a container.
Fill the reservoir with new brake fluid.
•
Change the brake fluid as follows:
•
Open the bleed valve [A].
○
Apply the brake lever and hold it [B].
○
Close the bleed valve [C].
○
Release the brake lever [D].
○
Check the fluid level in the reservoir often, replenishing it
•
as necessary.
NOTE
If the fluid in the reservoir runs completely out any time
○
during fluid changing, air will enter theline, and the system must be bled.
the plastic hose or the color of the fluid changes.
WARNING
Do not mix two brands of fluid. Change the brake
fluid in the brake line completely if the brake fluid
must be refilled but the type and brand of the brake
fluid that is already in the reservoir are not known.
Apply the brake lever forcefully for a few seconds, and
•
check for fluid leakage around the fittings.
If necessary, bleed the air from the brake line (see Brake
Line Air Bleeding section in Brakes chapter).
WARNING
If the brake lever has a soft or "spongy feeling"
when it is applied, there might be air in the brake
line or the brake may be defective. Since it is dangerous to operate the vehicle under such conditions, bleed the air from the brake line immediately.
Front Brake Master Cylinder Piston Assembly and
Dust Seal Replacement
Refer to the Master Cylinder section in the Brakes chap-
•
ter f or Front Brake Master Cylinder Piston Assembly and
Dust Seal Replacement.
Front Brake Caliper Piston Seal and Dust Seal
Replacement
Referto theCalipersection intheBrakes chapterfor Front
•
Brake Caliper Piston Seal and Dust Seal Replacement.
Page 57
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Rear Brake Plates Replacement
Replace the steel plates and friction plates in accordance
•
with the specifiedinterval(see RearFinal Gear Case section in the Final Drive chapter).
Rear Brake Lever Free Play Inspection
Check the rear brake lever free play [A].
•
Pull the rear brake lever lightly until the brake is applied.
○
If the play is incorrect, adjust it.
Rear Brake Lever Free Play
Standard:1 ∼ 2mm(0.04∼ 0.08 in.)
Brake Pedal Free Play Inspection
Check the brake pedal free play [A].
•
Depress the brake pedal lightly by hand until the brake is
○
applied.
If the free play is incorrect, adjust it.
PERIODIC MAINTENANCE 2-35
Brake Pedal Free Play
Standard:15 ∼ 25 mm (0.6 ∼ 1.0 in.)
Rear Brake Lever and Pedal F ree Play Adjustment
NOTE
Since the rear brake lever and pedal free play adjust-
○
ments affect each other, make them at the same time.
Rear Brake Lever:
Loosen the knurled locknut [A] and turn the adjuster [ B]
•
at the rear brake lever in as far as it will go.
Tighten the locknut.
•
Turn the brake lever adjuster [A] at the rear end of the
•
brake cable until the rear brake lever has the correct
amount of play.
Brake Pedal:
Turn the brake pedal adjuster [B] at the rear end of the
•
brake cable until the brake pedal has the correct amount
of play.
Operate the pedal a few times to see that it returns to its
•
rest position immediately upon release.
Rotate the rear wheels to check for brake drag.
•
Check braking effectiveness.
•
If there is any doubt as to the conditions of the brake,
check the brake parts for wear or damage.
Page 58
2-36 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Steering
Steering Inspection
Turn the handlebar left and right, and check the steering
•
action.
If the steeringactionis not smooth, or if the steering binds
or catches before the stop, lubricate the steering stem
bearing.
NOTE
Thecablesandwires will have some effect on thesteer-
○
ing action which must be taken into account.
Check the steering action again.
•
If steering stem bearing lubrication does not remedy the
problem,inspectthe steering stem forstraightness,steering stem clamps, and tie-rod bearings.
If you feel looseness, or if the steering rattles as it turns,
check the tightness of the steering bolts and nuts.
Tighten loose bolts and nuts to the specified torque (see
•
Steering chapter), and check the steering action again.
If the steering action does not change by tightening the
bolts and nuts, inspect the steering stem clamps, steering stem bearings, tie-rod bearings, and steering knuckle
joints.
Electrical System
Spark Plug Cleaning/Inspection
Remove the spark plug (see Electrical System chapter).
•
Clean the spark plug, preferably in a sandblastingdevice,
•
and then clean off any abrasive particles. The plug may
also be cleaned using a wire brush or other suitable tool.
If the spark plug electrodes are corroded or damaged,
or if the insulator is cracked, replace the plug. Use the
standard spark plug or its equivalent.
Spark Plug Gap Inspection
Measure the gap [A] with a wire-type thickness gauge.
•
If the gap is incorrect, carefully bend the side electrode
[B] with a suitable tool to obtain the correct gap.
Spark Plug Gap
0.7 ∼ 0.8 mm (0.028 ∼ 0.032 in.)
Page 59
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Brake Light Switch Inspection
Turn on the ignition switch.
•
Check the operation of the rear brake light switch by de-
•
pressing the brake pedal.
If it does not as specified, adjust the brake light timing.
Brake Light Timing
Standard:On after about 10 mm (0.4 in.) of pedal
travel [A]
Brake Light Timing Adjustment
Remove the right hootboard (see Frame chapter).
•
Adjust the brake light switch [A] up or dow n. To change
•
the switch position, turn the adjusting nut [B].
CAUTION
To avoid damaging the electrical connections inside the switch, be sure that the switch body does
not turn during adjustment.
PERIODIC MAINTENANCE 2-37
Drive Belt Failure Detection System Inspection
Remove:
•
Seat (see Frame chapter)
Check the drive belt failuredetection system according to
•
following chart.
Page 60
2-38 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
Page 61
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Joint Boots Inspection
Front Axle/Knuckle Joint Boot Inspection
Visually inspect the front axle joint boots [A].
•
Ifthe jointbootis torn, worn,deteriorated,or leaksgrease,
replace the joint boot or front axle assembly (see Final
Drive chapter).
Visually inspect the knuckle joint boots [B].
•
If the joint boot is torn, worn, deteriorated, or leaks
grease, replace the knuckle (see Steering Knuckle section in Steering chapter).
Front Propeller Shaft Boot Inspection
Visually inspect the boots [A] of the front propeller shaft.
•
Ifdamage, tear or deteriorationis found, replacethe boots
(see Front Propeller Shaft section in Final Drive chapter).
PERIODIC MAINTENANCE 2-39
Tie-rod End Boot Inspection
Visually inspect the tie-rod end boots [A] of the tie-rods.
•
If the boot is torn, w orn, deteriorated, or leaks grease,
replace the tie-rod end (see Steering chapter).
Rear Propeller Shaft Joint Boot Inspection
Visually inspect the boots [A] of the rear propeller shaft.
•
If the joint boot is torn, worn, or deteriorated, replace the
joint boot and check the propeller shaft (see Rear Propeller Shaft section in Final Drive chapter).
Rear Axle/Stabilizer Joint Boot Inspection
Visually inspect the rear axle joint boots [A].
•
Ifthe jointbootis torn, worn,deteriorated,or leaksgrease,
replace the joint boot or rear axle assembly (see Final
Drive chapter).
Visually inspect the stabilizer joint boots [B].
•
Ifthe jointbootis torn, worn,deteriorated,or leaksgrease,
replace the stabilizer joint (see Suspension chapter).
Page 62
2-40 PERIODIC MAINTENANCE
Property of www.SmallEngineDiscount.com - Not for Resale
Periodic Maintenance Procedures
General Lubrication
Lubrication
Beforelubricatingeach part, clean off anyrustyspotswith
•
rust remover and wipe off any grease, oil, dirt, or grime.
Lubricate the points listed below with indicated lubricant.
•
NOTE
Whenever the vehicle has been operated under
○
wet or rainy conditions, or especially after using a
high-pressure spray water, perform the general lubrication.
Cables: Lubricate with Cable Lubricant
Brake Cables
Throttle Cable
Choke Cables
Variable Differential Control Cable
Lubricatethe cables by seepingthe oil between the cable
•
and housing.
The c able may be lubricated by using a pressure cable
○
luber with an aerosol cable lubricant.
With the cable disconnected at the both ends, the cable
•
should move freely [A] within the cable housing.
If cable movement is not free after lubricating, if the cable
is frayed [B], or if the cable housing is kinked [C], replace
the cable.
Points: Lubricate with Grease.
Throttle Inner Cable Ends [A]
Choke Cable Lower End
Brake Cable Ends
Variable Differential Control Cable Ends
Page 63
Periodic Maintenance Procedures
Property of www.SmallEngineDiscount.com - Not for Resale
Slide Points: Lubricate with Grease.
Brake Lever
Brake Pedal Pivot Shaft
Throttle Lever Shaft
Bolts and Nuts Tightening
Tightness Inspection
Check the tightness of the bolts and nuts listed here in
•
accordance with the Periodic Maintenance Chart. Also,
check to see that each cotter pin is in place and in good
condition.
If there are loose fasteners, retorque them to the specified torque following the specified tightening sequence.
Refer to the appropriatechapter for torque specifications.
If torque specifications are not listed in the appropriate
chapter, see the Basic Torque Table (see Torque and
Locking Agent). For each fastener, first loosen it by 1/2
turn, then tighten it.
If cotter pins are damaged, replace them with new ones.
Bolts, Nuts, and Fasteners to be checked
Wheels:
Front Axle Nuts and Cotter Pins
Rear Axle Nuts and Cotter Pins
Wheel Nuts
Brakes:
Front Brake Master Cylinder Clamp Bolts
Brake Lever Pivot Bolt
Brake Lever Pivot Nut
Front Brake Caliper Mounting Bolts
Brake Pedal Cotter Pin
Steering/Suspension:
Handlebar Clamp Bolts
Stem Clamp Bolts
Stem Bearing Housing Bolts
Tie-rod End Nuts and Cotter Pins
Tie-rod Adjusting Sleeve Locknuts
Shock Absorber Mounting Bolts and Nuts
Suspension Arm Pivot Bolts
Steering Knuckle Pivot Nuts and Cotter Pins
tle valve is fully open. Turn the throttle limiter screw [A]
until it is spaced about 1 mm (0.04 in.) [B] away from the
throttle lever stop [C]. Tighten the locknut [D].
NOTE
Referto theOwner’s Manualfor the functionof thethrot-
○
tle limiter and adjustment procedure of it.
WARNING
Operation with an improperly assembled throttle
case could result in an unsafe riding condition.
Check the throttle lever freeplay (see Throttle Lever Free
•
Play Inspection in Periodic Maintenance chapter).
Throttle Cable Installation
Lubricate the throttle cable before installation.
•
Routethe cable correctlyaccording to theAppendix chap-
•
ter.
WARNING
FUEL SYSTEM 3-9
Operation with an improperly adjusted, incorrectly
routed, or damaged cable could result in an unsafe
riding condition.
Check the throttle cable (see Throttle Lever Free Play In-
•
spection in Periodic Maintenance chapter).
Throttle Case Inspection
With the throttle cable disconnected from the throttle
•
lever, the lever should move freely and return smoothly
by spring.
If the lever is heavy, disassemble the throttle case, clean
and lubricate the throttle case.
Examine the leverand case for cracks. Replace the case
•
assembly if it is cracked.
Throttle Cable Lubrication and Inspection
Whenever the throttle cable is removed or in accordance
•
with the Periodic Maintenance Chart in the Periodic Maintenance chapter, lubricate the cable .
Refer to the General Lubrication in the Periodic Mainte-
•
nance chapter for the cable lubrication and inspection.
Page 74
3-10 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Choke Lever and Cable
Choke Lever Free Play Inspection
Refer to the Choke Lever Free Play Inspection in the Pe-
•
riodic Maintenance chapter.
Choke Lever Free Play Adjustment
Refer to the Choke Lever Free Play Adjustment in the
•
Periodic Maintenance chapter.
Choke Lever and Cable Removal
Removetheaircleaner housing (see Air Cleaner Housing
•
Removal).
Remove the carburetor from the carburetor holder (see
•
Carburetor Removal).
Remove the screws [A] and holder plates [B] from both
•
carburetors.
Pull out the starter plungers.
•
Holdthestarter plunger springs compressed, and freethe
•
choke cable lower ends [A] from the plungers [B].
Remove:
•
Choke Lever Mounting Screw [A], Plane Washer, and
Wave Washer
Switch Case Mounting Screws [B]
Free the choke cable upper end [A] from the choke lever
•
[B].
Page 75
Choke Lever and Cable
Property of www.SmallEngineDiscount.com - Not for Resale
Pull off the retaining clip [A].
•
Fitthecable end [A] in thegrommet[B],and free the cable
•
from the switch case.
Pull the cable out of the vehicle.
•
FUEL SYSTEM 3-11
Choke Lever and Cable Installation
Lubricate the choke cable before installation.
•
Install the wave washer, plane washer and screw in that
•
order.
Routet he choke cable according totheAppendix chapter.
•
WARNING
Operation with an incorrectly routed, or damaged
cable could result in an unsafe riding condition.
Choke Cable Lubrication and Inspection
Whenever the choke cable is removed or in accordance
•
with the Periodic Maintenance chart i n the Periodic Maintenance chapter, lubricate the cable.
Refer to the General Lubrication in the Periodic Mainte-
•
nance chapter for the cable lubrication and inspection
Page 76
3-12 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Carburetor
Idle Speed Inspection
Refer to the Idle Speed Inspection in the Periodic Main-
•
tenance chapter.
Idle Speed Adjustment
Refer to the Idle Speed Adjustment in the Periodic Main-
•
tenance chapter.
Pilot Screw Adjustment
Adjust the pilot screw if necessary.
•
Remove the air cleaner cover (see Frame chapter).
•
Turn the carburetor pilot screw [A] all the way in until it
•
seats lightly.
Special Tool - Pilot Screw Adjuster, A: 57001-1239 [B]
CAUTION
Do not overtighten the pilot screw or the carburetor
body will be damaged and require replacement.
Back the pilot screw out the specified number of turns.
•
Carburetor Pilot Screw Setting
Standard:2 1/4 turns out
Service Fuel Level Inspection
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch O FF. Do not smoke. Make sure the area is
well ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
Park the vehicle on a level surface.
•
Remove:
•
Side Covers (see Frame chapter)
Throttle Link Case Cover
Carburetor Drain Hose
Page 77
Carburetor
Property of www.SmallEngineDiscount.com - Not for Resale
Connect two suitable hoses [A] to the fuel level gauge [B]
than the top graduation [D].
Hold the gauge so that the additional graduation is placed
•
slightly higher than the punch mark [E].
[F] Front Carburetor
[G] Rear Carburetor
Run the engine at idle speed.
•
Loosen the carburetor drain screw.
•
Special Tool - Carburetor Drain Plug Wrench, Hex 3:
57001-1269
Wait until the fuel level in the gauge settles.
•
Hold the gauge vertically and lower it slowly so that the
•
additional graduation aligns with punch mark.
NOTE
Do not align the additional graduation on the gauge
○
lower than the punch mark. If it is lowered and then
raised, the gauge will show a fluid level that is higher
than the actual level, which will require a remeasurement.
FUEL SYSTEM 3-13
Read the fuel level [ H].
•
If the fuel level is incorrect, adjust it.
Fuel Level
Standard:
Front20.4 ±1 mm (0.80 ±0.04 in.) below the
punch mark
Rear19.5 ±1 mm (0.77 ±0.04 in.) below the
punch mark
Stop the engine.
•
Tighten the drain screw.
•
Repeat the same procedure for the other carburetor.
•
Page 78
3-14 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Carburetor
Service Fuel Level Adjustment
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch to OFF. Do not smoke. Make sure the area
is well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
Remove the carburetors, and drain the fuel.
•
Remove the float chamber.
•
Remove the screw [A].
•
Slide out the pivot pin [B] and remove the float [C].
•
Bend the tang [A] on the float arm very slightly to change
•
the float height.
Float Height
Standard:2.9 ±1 mm (0.11 ±0.04 in.)
Measure the float height [A] from the mating surface [B]
○
of float by tilting the carburetorso that the tang ofthe float
[C] just touches the needle rod [D]. At this time, the float
valve [E] rod must not be depressed.
Increasing the float height lowers the fuel level and de-
○
creasing the float height raises the fuel level.
Assemble the carburetor and recheck the fuel level.
•
If the fuel level cannot be adjusted by this method, the
float or the float valve is damaged.
Carburetor Synchronization Inspection
Remove:
•
Side Covers (see Frame chapter)
Throttle Link Case Cover
Check idle speed.
•
Removethefrontvacuumhose [A] and install the vacuum
•
hose for vacuum gauge.
Page 79
Carburetor
Property of www.SmallEngineDiscount.com - Not for Resale
Remove the rear vacuum hose [A] and installthe vacuum
•
hose for vacuum gauge.
Connect:
•
Vacuum Gauge [A]
Special Tool - Vacuum Gauge: 57001-1369
Connect the fuel hose of a suitable fuel tank [B] to the
•
carburetor.
Start the engine and read the intake vacuum of each car-
•
buretor when idling.
If the vacuum is out of the specified range, adjust it.
FUEL SYSTEM 3-15
Carburetor Synchronization Vacuum
Standard:Less than 2.7 kPa (2 cmHg) difference
between c arburetors
Carburetor Synchronization Adjustment
Turn the adjust screw [A] to synchronize the carburetors.
•
If the carburetor synchronization cannot be obtained by
using the adjusting screw, check for dirt or blockage, and
then check the pilot screw settings.
Special Tool - Pilot Screw Adjuster, A: 57001-1239
Check the carburetor synchronization again.
•
NOTE
Donotturn the pilot screws carelesslyduring carburetor
○
synchronization. You may cause poor running at low
engine speed.
Check idle speed.
•
Fuel System Cleanliness Inspection
Refer to the Fuel System Cleanliness Inspection in the
•
Periodic Maintenance chapter.
Carburetor Removal
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch OFF. Do not smoke. Make sure the area is
well ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
Page 80
3-16 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Carburetor
Remove:
•
Air CleanerHousing(seeAirCleanerHousingRemoval)
Drain the fuel from the carburetors.
•
Remove:
•
Fuel Hose [A ]
Heater and Ground Lead Connectors [B]
Remove:
•
Screws [A] and Throttle Link Case Cover [B]
Remove:
•
Locknut [A]
Throttle Cable Lower End [B]
Loosen the carburetor clamp screws [C].
•
Remove the carburetor out of the frame.
•
Remove:
•
Screw [A]
Holder Plate [B]
Remove:
•
Starter Plunger [A]
Page 81
Carburetor
Property of www.SmallEngineDiscount.com - Not for Resale
Remove:
•
Screw [A]
Holder Plate [B]
Starter Plunger
Carburetor Installation
Confirm the groove of the carburetor holder [A] fits on the
•
projection [B] of the cylinder head.
Check fuel leakage from the carburetors.
•
WARNING
Fuel spilled from the carburetors is hazardous.
Adjust the idle speed (see Idle Speed Adjustment in Pe-
•
riodic Maintenance chapter).
Check the throttle cable (see Throttle Lever Free Play In-
•
spection in Periodic Maintenance chapter).
FUEL SYSTEM 3-17
Carburetor Disassembly
Remove the carburetors (see Carburetor Removal).
•
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch to OFF. Do not smoke. Make sure the area
is well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
NOTE
The carburetors can be disassembled in the joined
○
state.
Page 82
3-18 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
During carburetor disassembly, be careful not to
damage the diaphragm. Never use a sharp edge to
remove the diaphragm.
Removethe jet needle [D] fromthe vacuum piston. These
•
can be detached together with the spring seat [E].
Do not remove the pilot screw if possible, synchronization
○
ofthe carburetorsis necessaryif pilotscrews areremoved
(see Pilot Screw Adjustment).
Remove:
•
Screws [A]
Float Chamber [B]
Remove:
•
Screw [A]
Float Pivot Pin [B], Float [C], and Float Needle Valve
Pilot Jet [D]
Main Jet [E]
Starter Jet [F]
Remove:
•
Screws [A]
Coasting Enricher Cover [B]
Page 83
Carburetor
Property of www.SmallEngineDiscount.com - Not for Resale
Remove:
•
Diaphragm [A]
O-ring [B]
Carburetor Assembly
WARNING
Fuel spilled from the carburetors is hazardous.
CAUTION
Do not apply force to the jet or overtighten it, or
this could damage the jet or the carburetor body,
requiring replacement.
FUEL SYSTEM 3-19
Install the float valve needle in the valve seat and hook
•
the needle hanger [A] onto the float tang.
Insertthe floatpivotpin [B]intothe pivot postandthe float.
•
Tighten the screw [C].
•
Set the float to the standard height (see Service Fuel
•
Level Adjustment).
Insert the jet needle [A] into the hole in the center of the
•
vacuum piston [B], and place the spring seat [C] over the
needle.
Slip the needle through the hole in the center of the vac-
•
uum piston, and put the spring seat [A] on the top of the
needle. Turn the seat so that it does not block the hole
[B] at the bottom of the vacuum piston.
After installing the upper chamber cover, check that the
•
vacuum pistonslidesupand down smoothly withoutbinding in the carburetor bore.
Page 84
3-20 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Carburetor
Fit the projection [A] of the vacuum piston diaphragm in
•
the recess [B] of the body.
After installing the upper chamber cover, check to make
•
sure that the vacuum piston moves smoothly in the carburetor body.
Carburetor Separation
Remove:
•
Carburetor (see Carburetor Removal)
Screws [A]
Fuel Hose Fittings [B]
Remove:
•
Cotter Pins [A], Collars and Washers
Link Arm [ B]
Remove:
•
Link Case Screws [A]
Link Case [B]
Separate the Carburetors.
•
Carburetor Joining
Install link case and tighten link case screws.
•
Apply grease to the link pins [A].
•
Install the link arm as shown.
•
Washers [B]
Collars [C]
Link Arm [ D]
Cotter Pins [E]
Bend the ends of the cotter pins.
•
Install the fuel hose fittings, and tighten the screws.
•
Page 85
Carburetor
Property of www.SmallEngineDiscount.com - Not for Resale
Visually synchronize the throttle (butterfly) valves.
•
Check to see that all throttle valves open and close
○
smoothly without binding when turning the pulley.
Visually check the clearance [A] between the throttle
○
valve and the carburetor bore in each carburetor.
If there is a difference between two carburetors, turn the
balanceadjustingscrew [A] to obtain the same clearance.
Install the carburetors (see Carburetor Installation).
•
Adjust the synchronization (see Synchronization Adjust-
•
ment).
FUEL SYSTEM 3-21
Carburetor Cleaning
WARNING
Clean the carburetor in a well-ventilated area and
take care that there are no sparks or flame anywhere near the working area; this includes any appliance with a pilot light. Because of the danger
of highly flammable liquids, do not use gasoline or
low-flash point solvents to clean the carburetor.
CAUTION
Do not use compressed air on an assembled carburetor, the f loat may be crushed by the pressure, and
the vacuum piston diaphragm may be damaged.
Remove as many rubber or plastic parts from the
carburetor as possible before cleaning thecarburetor with a cleaning solution. This will prevent damage or deterioration of the parts.
The carburetor body has plastic parts that cannot be removed. Do not use a strong carburetor
cleaning solution which could attack these parts;
instead, use a mild high-flash point cleaning solution safe for plastic parts.
Do not use wire or any other hard instrument to
clean carburetor parts, especially jets, as they may
be damaged.
Page 86
3-22 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Carburetor
Disassemble the carburetor and clean all the metal parts
•
in a carburetor cleaning solution.
Rinse the parts in water and dry them with compressed
•
air.
Blow through the air and fuel passages with compressed
•
air.
Remove the float valve, spray cleaning solution from the
•
valve seating surface into the fuel passage, andcleanthe
strainer (press-fitted) with compressed air [A].
Assemble the carburetor (see Carburetor Assembly).
•
Carburetor Inspection
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition
switch O FF. Do not smoke. Make sure the area is
well ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light.
Remove the carburetor (see Carburetor Removal).
•
Beforedisassemblingthecarburetors, checkt he fuellevel
•
(see Fuel Level Inspection).
Turn the throttle cable pulley [A] to check that the throttle
•
butterfly valves [B] move smoothly and return back with
the spring tension.
If the t hrottle valves do not move smoothly, replace the
carburetor.
Page 87
Carburetor
Property of www.SmallEngineDiscount.com - Not for Resale
Disassemble the carburetors (see Carburetor Disassem-
•
bly).
Clean the carburetor (see Carburetor Cleaning).
•
Check the vacuum piston diaphragm [A], and the O-rings
•
[B] on the float bowl, pilot screw, coasting enricher, and
starter plunger cap.
If any of the diaphragm or O-rings are not in good condition, replace them.
FUEL SYSTEM 3-23
Checktheplastictip [A] of the float valve needle. It should
•
be smooth, without any grooves, scratches, or tears.
Iftheplastictip is damaged [C], replace the float valve [B].
Push the rod [D] in the other end of the float valve needle
•
and then release it [ E].
If it does not spring out, replace the float valve.
Check the tapered portion [A] of the pilot screw [B] for
•
wear or damage.
If the pilot screw is worn or damaged on the tapered portion, it will prevent the engine from idling smoothly. Replace it.
Check that the vacuum piston moves smoothly int he car-
•
buretor body. The surface of the piston must not be excessively worn.
If the vacuum piston does not move smoothly, or if it is
very loose in the carburetor body, replace both the body
and the vacuum piston.
Page 88
3-24 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Air Cleaner
Air Cleaner Element Removal
Remove:
•
Seat (see Frame chapter)
Clips [A]
Air Cleaner Housing Cap [B]
Remove:
•
Element Cover Screw [A]
Element Cover [B]
Element [C]
After removing the element, stuff pieces of lint-free,clean
•
cloth i nto the air cleaner ducts to keep dirt out of the carburetor and engine.
WARNING
If dirt or dust is allowed to pass through into the
carburetors, the throttle may become stuck, possibly causing an accident.
CAUTION
If dirt gets through into the engine, excessive engine wear and possibly engine damage will occur.
Air Cleaner Ele ment Installation
Install:
•
Element
Element Cover
Tighten:
•
Torque - Element Cover Screw: 3.5 N·m (0.35 kgf·m, 31
in·lb)
Air Cleaner Element Cleaning and Inspection
Refer to the Air Cleaner Element Cleaning andInspection
•
in the Periodic Maintenance chapter.
Air Cleaner Housing Removal
Remove:
•
Side Covers (see Frame chapter)
Air Cleaner Housing Cap
Air CleanerElement(seeAirCleanerElementRemoval)
Page 89
Air Cleaner
Property of www.SmallEngineDiscount.com - Not for Resale
Remove:
•
Screws [A]
Element Holder [B]
Spark Arrester [C]
Remove:
•
Screw [A]
Air Intake Duct [B]
Air Cleaner Housing Bolt [C]
FUEL SYSTEM 3-25
Remove:
•
Air Cleaner Housing Bolt [A]
Loosen the clamp screws [A].
•
Remove:
•
Breather Hose [A]
Page 90
3-26 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Air Cleaner
Remove:
•
Screw [A]
Carburetor Breather Tank [B]
Air Cleaner Housing [C]
Air Cleaner Housing Installation
Fit the projection [A] of the housing in the groove [B] of
•
the joint duct [C] (front and rear), and tighten the clamp
screws.
Install:
•
Dust Seal [A]
Air Cleaner Housing Cover [B]
[C] Inside
Install the air cleaner housing and joint duct on the carbu-
•
retor.
Install:
•
Breather Hose and Clamp
Carburetor Breather Tank
Fit the joint duct on the fitting of the carburetor securely
•
and tighten the clamp screws.
Tighten the air cleaner housing bolts.
•
Install the spark arrester [A] so that the swelling faces
•
upward.
Page 91
Air Cleaner
Property of www.SmallEngineDiscount.com - Not for Resale
Apply the soap and water solution over the trim seal [A].
•
Install:
•
Element Holder
Tighten:
•
Torque - Element Holder Screws: 3.5 N·m (0.35 kgf·m, 31
in·lb)
Install:
•
Element (see A ir Cleaner Element Installation)
FUEL SYSTEM 3-27
Page 92
3-28 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Fuel Tank
Fuel Tank Removal
Remove:
•
Electrical Parts Case (see Frame chapter)
Rear Fender (see Frame chapter)
Storage Case [A] (Optional Part)
Check Valve Hose [B]
Remove:
•
Two Right Footboard Bolts [A]
Insert a thin driver [A] in the clamp [B] to clear its stopper,
Property of www.SmallEngineDiscount.com - Not for Resale
Fuel Tank
Install:
•
Vacuum Hose [A] and Clamp [B]
Fuel Level Sensor Lead Connector
Install the removed parts.
•
Fuel Tank Cleaning
Remove the fuel tank and drain it (see Fuel Tank Re-
•
moval).
Pour some high-flash point solvent into the fuel tank and
•
shake the tank to remove dirt and fuel deposits.
WARNING
Clean the tank in a well-ventilated area, and take
care that there is no spark or flame anywhere
near the working area; this includes any appliance
with a pilot light. Because of the danger of highly
flammable liquids, do not use gasoline or low-flash
point solvents to clean the tank. A fire or explosion
could result.
Pour the solvent out the tank.
•
Dry the tank with compressed air.
•
Install the fuel tank (see Fuel Tank Installation).
•
Fuel Tap Removal
Remove:
•
Fuel Pump (see Fuel Pump Removal)
Fuel Tap Mounting Bolts [A]
Vacuum Hose [B]
Fuel Tap [C]
Fuel Tap Installation
Be sure the O-ring [A] is in good condition to prevent leak-
•
age.
Page 95
Fuel Tank
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Connect the fuel hoses to the fuel tap as follows.
•
Vacuum Hose [A]
Fuel Pump Hose [B]
Be sure to clamps [C] the fuel hoses to prevent leakage.
•
Fuel Tap Inspection
Check the fuel tap filter screen[A] for any breaks or dete-
•
rioration.
If the filter screen has any break or is deteriorated, it may
allow dirt to reach the carburetor, causing poor running.
Replace the fuel tap.
FUEL SYSTEM 3-31
If the fuel tap leaks, replace the damaged gasket [A] or
O-rings [B].
Apply grease to the lever [A].
•
Tighten:
•
T orque - Fuel Tap Plate Screws [A]: 0.8 N·m (0.08 kgf·m, 7
in·lb)
Page 96
3-32 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale
Fuel Tank
Fuel Tap Cleaning
Remove:
•
Fuel Tap (see Fuel Tap Removal)
Clean the fuel tap filter screen in a high-flash point sol-
•
vent.
WARNING
Clean the tap in awell-ventilatedarea, and take care
that there is no spark or flame anywhere near the
working area; this includes any appliance with a pilot light. Because of the danger of highly flammable
liquids, do not use gasoline or low-flash point solvents to clean the tap. A fire or explosion could result.
Pour high-flash point solvent through the tap in PRI posi-
•
tion.
Dry the fuel tap with compressed air.
•
Install t he fuel tap (see Fuel Tap Installation).
•
Page 97
Fuel Pump
Property of www.SmallEngineDiscount.com - Not for Resale
Fuel Pump Removal
CAUTION
Never drop the fuel pump, especially on a hard surface. Such a shock to the pump can damage it.
WARNING
Gasoline is extremely flammable and can be explosive under certain conditions. Make sure the area
is well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light. Do not smoke. Turn the ignition switch OFF.
Disconnect the battery (-) terminal.
To make fuel spillage minimum, draw the fuel out
from the fuel tank when the engine is cold.Be
prepared for fuel spillage; any spilled fuel must be
completely wiped up immediately.
Fuel Pump Removal
Remove:
•
Electrical Parts Case (see Frame chapter)
Bolts [A]
Fuel Hose [B]
FUEL SYSTEM 3-33
Remove:
•
Vacuum Hose [A]
Fuel Hose [B]
Remove:
•
Nuts [A] and Washers
Fuel Pump [B ]
Page 98
3-34 FUEL SYSTEM
Property of www.SmallEngineDiscount.com - Not for Resale