Kawasaki KX450F - User manual

KX450F

Motorcycle

Service Manual

This quick reference guide will assist

you in locating a desired topic or pro-

cedure.

•Bend the pages back to match the

black tab of the desired chapter num-

ber with the black tab on the edge at

each table of contents page.

•Refer to the sectional table of contents

for the exact pages to locate the spe-

cific topic required.

Quick Reference Guide

General Information 1 j

Periodic Maintenance 2 j

Fuel System (DFI) 3 j

Cooling System 4 j

Engine Top End 5 j

Clutch 6 j

Engine Lubrication System 7 j

Engine Removal/Installation 8 j

Crankshaft/Transmission 9 j

Wheels/Tires 10 j

Final Drive 11 j

Brakes 12 j

Suspension 13 j

Steering 14 j

Frame 15 j

Electrical System 16 j

Appendix 17 j

KX450F

Motorcycle

Service Manual

transmitted in any form or by any means, electronic mechanical photocopying, recording or otherwise,

without the prior written permission of Quality Assurance Division/Motorcycle & Engine 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 Motorcycle dealer for the latest

information on product improvements incorporated after this publication.

All information contained in this publication is based on the latest 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 component parts.

LIST OF ABBREVIATIONS

A ampere(s) in. inch(s)

ABDC after bottom dead center KDS Kawasaki Diagnostic System

AC

alternating current

km/h

kilometers per hour

Ah ampere hour L

liter(s)

ATDC after top dead center lb pound(s)

BBDC before bottom dead center LED Light Emitting Diode

BDC bottom dead center m meter(s)

BTDC before top dead center min minute(s)

°C degree(s) Celsius mph miles per hour

cmHg centimeters of mercury N newton(s)

CPU Central Processing Unit oz ounce(s)

cu in cubic inch(s) Pa pascal(s)

DC direct current PS horsepower

DFI Digital Fuel Injection psi

pound(s) per square inch

ECU Electronic Control Unit

qt

quart(s)

F

farad(s)

r revolution

°F degree(s) Fahrenheit rpm revolution(s) perminute

ft foot, feet s second(s)

ggram(s) TDC top dead center

gal gallon(s) Vvolt(s)

h hour(s) W watt(s)

HP horsepower(s) Ω ohm(s)

COUNTRY AND AREA CODES

AU Australia EUR Europe

BR Brazil TH Thailand

CA Canada US United States

Foreword

This manual is designed primarily for use by

trained mechanics in a properly equipped shop.

However, it contains enough detail and basic in-

formation to m ake it useful to the owner who de-

sires to perform his own basic maintenance and

repair work. A basic knowledge of mechanics,

the proper use of tools, and workshop proce-

dures must be understood in order to carry out

maintenance and repair satisfactorily. When-

ever the owner has insufficient experience or

doubts his ability to do the work, all adjust-

ments, maintenance, and repair should be car-

ried out only by qualified mechanics.

In order to perform the work efficiently and

to avoid costly m istakes, read the text, thor-

oughly familiarize yourself with the procedures

before starting work, and then do the work care-

fully 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 ad-

versely affect safe operation.

To get the longest life out of your vehicle:

•

Follow the Periodic Maintenance Chart in the

Service Manual.

•

Be alert for problems and non-scheduled

maintenance.

•

Use proper tools and genuine Kawasaki Mo-

torcycle parts. Special tools, gauges, and

testers that are necessary when servicing

Kawasaki motorcycles are introduced by the

Service 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.

•

Remember to keep complete records of 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 m anual’s chapters. The Quick Reference

Guide s hows you all of the product’s system

and assists in locating their chapters. Each

chapter in turn has its own comprehensive Ta-

ble of Contents.

For example, if you want stick coil information,

use the Quick Reference Guide to locate the

Electrical System chapter. Then, use the Table

of Contents on the first page of the c hapter to

find the Stick Coil section.

Whenever you see symbols, heed their in-

structions! Always follow safe operating and

maintenance practices.

DANGER

DANGER indicates a hazardous situa-

tion which, if not avoided, will result in

death or serious injury.

WARNING

WARNING indicates a hazardous situa-

tion which, if not avoided, could result

in death or serious injury.

NOTICE

NOTICE is used to address practices not

related to personal injury.

This manual contains four more symbols

which will help you distinguish different types

of information.

NOTE

○

NOTE indicates information that may help

or guide you in the operation or service of

the vehicle.

•

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

take based on the results of the test or 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

instructions indicating which parts require spec-

ified tightening torque, oil, grease or a locking

agent during assembly.

GENERAL INFORMATION 1-1

1

General Information

Table of Contents

Before Servicing ..................................................................................................................... 1-2

Model Identification................................................................................................................. 1-7

General Specifications............................................................................................................ 1-8

Technical Information - DFI Setting Data Selection ................................................................ 1-11

Technical Information - Launch Control Mode ........................................................................ 1-13

Technical Information - PSF (Pneumatic Spring Fork) Front Fork (KX450FD ∼).................... 1-15

Unit Conversion Table ............................................................................................................ 1-20

1-2 GENERAL INFORMATION

Before Servicing

Before starting to perform an inspection service or carry out a disassembly and reassembly opera-

tion on a motorcycle, read the p recautions given below. To facilitate actual operations, notes, illustra-

tions, 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:

Edges of Parts

Lift large or heavy parts wearing gloves to prevent injury

from possible sharp edges on the parts.

Solvent

Use a high flash-point solvent when cleaning parts. High

flash-point solvent should be used according to directions

of the solvent manufacturer.

Cleaning Vehicle before Disassembly

Clean the vehicle thoroughly before disassembly. Dirt or

other foreign materials entering into sealed areas during ve-

hicle disassembly can cause excessive wear and decrease

performance of the vehicle.

Arrangement and Clean ing 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.

GENERAL INFORMATION 1-3

Before Servicing

Storage of Remov ed Parts

After all the parts including subassembly 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.

Inspection

Reuse of worn or damaged parts may lead to serious ac-

cident. Visually inspect removed parts for corrosion, discol-

oration, or other damage. 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 be-

yond its service limit.

Replacement Parts

Replacement parts must be KAWASAKI genuine or

recommended by KAWASAKI. Gaskets, O-rings, oil seals,

grease seals, circlips, cotter pins or self-locking nuts must

be replaced with new ones whenever disassembled.

Assembly Order

In most cases assembly order is the reverse of disassem-

bly, however, if assembly order is provided in this Service

Manual, follow the procedures given.

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 se-

quence 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 quar-

ter turn and then remove them. If the specified tightening

sequence is not indicated, tighten the fasteners alternating

diagonally.

1-4 GENERAL INFORMATION

Before Servicing

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 followed twice-initial tightening and

final tightening with torque wrench.

Force

Use common sense during disassembly and assembly,

excessive force can cause expensive or hard to repair dam-

age. 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 per-

formance. 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, Non-permanent Locking Agent

For applications that require Liquid Gasket or a

Non-permanent Locking Agent, clean the s urfaces so

that no oil residue remains before applying liquid gasket or

non-permanent locking agent. Do not apply them exces-

sively. Excessive application can clog oil passages and

cause serious damage.

Press

For items such as bearings or oil seals that must be

pressed into place, apply small amount of oil to the con-

tact area. Be sure to maintain proper alignment and use

smooth movements when installing.

GENERAL INFORMATION 1-5

Before Servicing

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.

Oil Seal, Grease Seal

Do not remove pressed oil or grease seals unless removal

is necessary. Replace w ith 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

Replace circlips or cotter pins that were removed with new

ones. Take care not to open the clip excessively when in-

stalling to prevent deformation.

Lubrication

It is important to lubricate rotating or sliding parts during

assembly to minimize wear during initial operation. Lubri-

cation points are called out throughout this manual, apply

the specific oil or grease as specified.

1-6 GENERAL INFORMATION

Before Servicing

Direction of Engine Rotation

When rotating the crankshaft by hand, the free play

amount of rotating direction will affect the adjustment. Ro-

tate the crankshaft to positive direction (clockwise viewed

from output side).

Electrical Leads

A two-color lead is identified first by the primary color and

then the stripe color. Unless instructed otherwise, electrical

leads must be connected to those o f the same color.

Instrument

Use a meter that has enough accuracy for an accurate

measurement. Read the manufacture’s instructions thor-

oughly before using the meter. Incorrect values may lead

to improper adjustments.

GENERAL INFORMATION 1-7

Model Identification

KX450FC Left Side View

KX450FC Right Side View

Frame Number Engine Number

1-8 GENERAL INFORMATION

General Specifications

Items KX450FC ∼ FE

Dimensions

Overall Length 2 180 mm (85.83 in.)

Overall Width 820 mm (32.3 in.)

Overall Height 1 275 mm (50.20 in.)

Wheelbase 1 480 mm (58.27 in.)

Road Clearance 330 mm (13.0 in.)

Seat Height 955 mm (37.6 in.)

Curb Mass:

KX450FC 113kg(249lb)

KX450FD ∼

112.5 kg (248 lb)

Front:

KX450FC 55 kg (121 lb)

KX450FD ∼

54.5 kg (120 lb)

Rear 58 kg (128 lb)

Fuel Tank Capacity 6.2 L (1.6 US gal)

Engine

Type 4-stroke, single cylinder, DOHC 4valve

Cooling System Liquid-cooled

Bore and Stroke 96.0 × 62.1 mm (3.78 × 2.44 in.)

Displacement 449 cm³ (27.4 cu in.)

Compression Ratio 12.5:1

Fuel System FI (Fuel Injection), KEIHIN 43

Fuel Type:

Minimum Octane Rating:

Research Octane Number (RON) (AU, EUR, TH) 95

Antiknock Index (RON + MON)/2 (US, CA, BR) 90

Starting System Primary kick

Ignition System Digital DC-CDI

Timing Advance Electronically advanced

Ignition Timing BTDC 10° @2 000 r/min (rpm)

Spark Plug:

Standard: NGK CPR8EB-9

Terminal Solid post

Option: NGK CPR9EB-9

Terminal Solid post

Valve Timing:

Intake:

Open BTDC 36°

Close ABDC 68°

Duration

284°

Exhaust:

Open BBDC 66°

Close ATDC 38°

Duration 284°

GENERAL INFORMATION 1-9

General Specifications

Items KX450FC ∼ FE

Lubrication System Forced lubrication (semi-dry sump)

Engine Oil:

Type API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2

Viscosity

SAE 10W-40

Capacity 1.2L(1.3USqt)

Drive Train

Primary Reduction System:

Type

Gear

Reduction Ratio 2.727 (60/22)

Clutch Type Wet multi disc, Manual

Transmission:

Type 5-speed, constant mesh, return shift

Gear Ratios:

1st 1.750 (28/16)

2nd 1.412 (24/17)

3rd

1.188 (19/16)

4th

1.000 (19/19)

5th 0.875 (21/24)

Final Drive System:

Type Chain drive

Reduction Ratio 3.846 (50/13)

Overall Drive Ratio 9.178 @Top gear

Frame

Type Tubular, semi-double cradle

Steering Angle 42° to either side

Caster (Rake Angle) 26.9°

Trail 113 mm (4.45 in.)

Front Wheel:

Tire Size 80/100-21 51M

Tire Make/T ype BRIDGESTONEM403, Tube type

Rim Size

21 × 1.60

Rear Wheel:

Tire Size 120/80-19 63M

Tire Make/T ype BRIDGESTONEM404, Tube type

Rim Size

19 × 2.15

Front Suspension:

Type Telescopic fork (upside-down)

Wheel Travel 314 mm (12.4 in.)

Rear Suspension:

Type

Swingarm (New Uni-trak)

Wheel Travel

315 mm (12.4 in.)

Brake Type:

Front and Rear

Single disc

1-10 GENERAL INFORMATION

General Specifications

Items KX450FC ∼ FE

Effective D isc Diameter:

Front 225 mm (8.86 in.)

Rear 215 mm (8.46 in.)

Specifications are subject to change without notice, and may not apply to every country.

GENERAL INFORMATION 1-11

Technical Information - DFI Setting Data Selection

Overview

The DFI setting can be easily selected among three op-

tions to suit various track conditions without using the KX FI

calibration kit.

•

The setting can be switched by changing the connector

[A] on the right side of the steering stem.

Track Condition Connector Color

Soft

White [A]

Standard Green [B]

Hard

Black [C]

Switching Procedure

•

Change the connector with the engine stopped.

•

Remove the connector upward [A] from the bracket while

pushing the connector stopper [B].

•

Select the connector suitable for the track condition and

install it to the bracket.

NOTE

○

The ignition timing and fuel injection are set to suit each

track condition in the DFI setting.

○

The DFI setting at start-up is maintained until the engine

stops. If the connector is changed during idling, the DFI

setting does not change.

○

The DFI setting is fixed to the standard track condi-

tion when the connector is removed with the engine

stopped. Always have one of the three connectors at-

tached when riding to prevent mud and dust from accu-

mulating in the connector terminal.

○

The DFI setting can be changed to suit user’s prefer-

ence using the KX FI calibration kit.

○

When the connector is not attached, the KX FI calibra-

tion kit cannot change the DFI setting.

1-12 GENERAL INFORMATION

Technical Information - DFI Setting Data Selection

Connector Circuit

1. ECU

2. White Connector

3. Frame Ground 1

4. Green Connector

5. Black Connector

DFI Setting Map Image

A. Correction Value

B. Throttle Opening

C. Engine Speed

D. Ignition Timing (Soft)

E. Ignition Timing (Hard)

F. Fuel Injection Quantity (Soft)

G. Fuel Injection Quantity (Hard)

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Kawasaki KX450F - User manual

Kawasaki KX450F - User manual

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