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2006 Suzuki Ltr450 Workshop Repair Manual
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GROUP INDEX
GENERAL INFORMATION
1
PERIODIC MAINTENANCE
2
ENGINE
3
FI SYSTEM DIAGNOSIS
4
FUEL SYSTEM AND
THROTTLE BODY
5
COOLING AND
LUBRICATION SYSTEM
6
CHASSIS
7
ELECTRICAL SYSTEM
8
SERVICING INFORMATION
9
EMISSION CONTROL
INFORMATION
10
FOREWORD
This manual contains an introductory description on
the SUZUKI LT-R450 and procedures for its inspec-
tion, service and overhaul of its main components.
Other information considered as generally known is
not included.
Read the GENERAL INFORMATION section to
familiarize yourself with the vehicle and its mainte-
nance. Use this section as well as other sections as
a guide for proper inspection and service.
This manual will help you know the vehicle better so
that you can assure your customers of fast and reli-
able service.
* This manual has been prepared on the basis
of the latest specifications at the time of publi-
cation. If modifications have been made since
then, differences may exist between the con-
tent of this manual and the actual vehicle.
* Illustrations in this manual are used to show
the basic principles of operation and work
procedures. They may not represent the
actual vehicle exactly in detail.
* This manual is written for persons who have
enough knowledge, skills and tools, including
special tools, for servicing SUZUKI vehicles.
If you do not have the proper knowledge and
tools, ask your authorized SUZUKI motorcy-
cle dealer to help you.
Inexperienced mechanics or mechanics
without the proper tools and equipment
may not be able to properly perform the
services described in this manual.
Improper repair may result in injury to the
mechanic and may render the vehicle
unsafe for the rider.
Revised 03/09

SUPPLEMENTS
LT-R450K9 (’09-MODEL)
LT-R450K8 ( 08-MODEL)
11
12
'
WIRING DIAGRAM
13

White Page

HOW TO USE THIS MANUAL
TO LOCATE WHAT YOU ARE LOOKING FOR:
1. The text of this manual is divided into sections.
2. The section titles are listed in the GROUP INDEX.
3. Holding the manual as shown at the right will allow you to find
the first page of the section easily.
4. The c ontents are l isted o n t he f irst p age of each section to
help you find the item and page you need.
COMPONENT PARTS AND WORK TO BE DONE
Under the name of each system or unit, is its exploded view. Work instructions and other service information
such as the tightening torque, lubricating points and locking agent points, are provided.
Example: Front and rear wheels
1 Front wheel
2 Washer
3 Cotter pin
4 Air valve
5 Front tire
6 Front hub plate
7 Spacer
8 Dust seal
9 Hub bearing
0 Front wheel hub
A Spacer
B Hub bearing
C Dust seal
D Collar
E Front brake disc
F Disc cover
G Axle shaft
H Rear wheel hub
I Rear wheel
J Rear tire
K Washer
A Wheel set nut
B Front hub nut
C Rear hub nut
D Brake disc bolt
"
ITEM N·m kgf-m lb-ft
A 66 6.6 47.5
B 65 6.5 47.0
C 121 12.1 87.5
D 23 2.3 16.5

SYMBOL
Listed in the table below are the symbols indicating instructions and other information necessary for servic-
ing. The meaning of each symbol is also included in the table.
SYMBOL DEFINITION SYMBOL DEFINITION
Torque control required.
Data beside it indicates specified
torque.
Apply THREAD LOCK “1342”.
99000-32050
Apply oil. Use engine oil unless
otherwise specified.
Apply THREAD LOCK SUPER “1360”.
99000-32130
Apply molybdenum oil solution.
(mixture of engine oil and SUZUKl
MOLY PASTE in a ratio of 1 : 1)
Apply or use brake fluid.
Apply SUZUKI SUPER GREASE “A”
or equivalent grease.
99000-25010
Measure in voltage range.
Apply SUZUKI SILICONE GREASE.
99000-25100
Measure in resistance range.
Apply SUZUKI MOLY PASTE.
99000-25140
Measure in current range.
Apply SUZUKI BOND “1215”
or equivalent bond.
99000-31110
Measure in diode test range.
Apply SUZUKI BOND “1216B”.
99000-31230
Measure in continuity test range.
Apply THREAD LOCK SUPER “1303”.
99000-32030
Use special tool.
Apply THREAD LOCK SUPER “1322”
or equivalent thread lock.
99000-32110
Indicates service data.
1216B

ABBREVIATIONS USED IN THIS
MANUAL
A
ABDC : After Bottom Dead Center
AC : Alternating Current
ACL : Air Cleaner, Air Cleaner Box
API : American Petroleum Institute
ATDC : After Top Dead Center
A/F : Air Fuel Mixture
B
BBDC : Before Bottom Dead Center
BTDC : Before Top Dead Center
B+ : Battery Positive Voltage
C
CKP Sensor : Crankshaft Position Sensor
(CKPS)
CKT : Circuit
CLP Switch : Clutch Lever Position Switch
(Clutch Switch)
CO : Carbon Monoxide
CPU : Central Processing Unit
D
DC : Direct Current
DMC : Dealer Mode Coupler
DOHC : Double Over Head Camshaft
DRL : Daytime Running Light
DTC : Diagnostic Trouble Code
E
ECM : Engine Control Module
Engine Control Unit (ECU)
(FI Control Unit)
ECT Sensor : Engine Coolant Temperature
Sensor (ECTS), Water Temp.
Sensor (WTS)
F
FI : Fuel Injection, Fuel Injector
FP : Fuel Pump
FPR : Fuel Pressure Regulator
FP Relay : Fuel Pump Relay
G
GEN : Generator
GND : Ground
GP Switch : Gear Position Switch
H
HC : Hydrocarbons
I
IAP Sensor : Intake Air Pressure Sensor (IAPS)
(MAP Sensor)
IAT Sensor : Intake Air Temperature Sensor
(IATS)
IG : Ignition
IAS : Idle air screw
L
LH : Left Hand
M
MAL-Code : Malfunction Code
(Diagnostic Code)
Max : Maximum
MIL : Malfunction Indicator Lamp
Min : Minimum
N
NOX : Nitrogen Oxides
O
OHC : Over Head Camshaft
P
PCV : Positive Crankcase
Ventilation (Crankcase Breather)
R
RH : Right Hand
ROM : Read Only Memory
S
SAE : Society of Automotive Engineers
SDS : Suzuki Diagnosis System
T
TO Sensor : Tip-Over Sensor (TOS)
TP Sensor : Throttle Position Sensor (TPS)

SAE-TO-FORMER SUZUKI TERM
This table lists SAE (Society of Automotive Engineers) J1930 terms and abbreviations which may be used in
this manual in compliance with SAE recommendations, as well as their former SUZUKI names.
SAE TERM
FORMER SUZUKI TERM
FULL TERM ABBREVIATION
A
Air Cleaner ACL Air Cleaner, Air Cleaner Box
B
Battery Positive Voltage B+ Battery Voltage, +B
C
Crankshaft Position Sensor CKP Sensor Crankshaft Position Sensor (CKPS),
Crank Angle
D
Data Link Connector DLC Dealer Mode Coupler
Diagnostic Test Mode DTM ––––
Diagnostic Trouble Code DTC Diagnostic Code, Malfunction Code
E
Electronic Ignition El ––––
Engine Control Module ECM Engine Control Module (ECM)
Fl Control Unit, Engine Control Unit (ECU)
Engine Coolant Level ECL Coolant Level
Engine Coolant Temperature ECT Coolant Temperature, Engine Coolant Tem-
perature, Water Temperature
Engine Speed RPM Engine Speed (RPM)
F
Fan C ontrol FC ––––
Fuel Level Sensor –––– Fuel Level Sensor, Fuel Level Gauge
Fuel Pump FP Fuel Pump (FP)
G
Generator GE N Generator
Ground GND Ground (GND, GRD)
I
Ignition Control IC Electronic Spark Advance (ESA)
Ignition Control Module ICM ––––
Intake Air Temperature IAT Intake Air Temperature (IAT), Air Temperature
M
Malfunction Indicator Lamp MIL Lamp
Malfunction Indicator Lamp (MIL)
Manifold Absolute Pressure MAP Intake Air Pressure (IAP), Intake Vacuum

SAE TERM
FORMER SUZUKI TERM
FULL TERM ABBREVIATION
O
On-Board Diagnostic OBD Self-Diagnosis Function
Diagnostic
P
Programmable Read Only Memory PROM ––––
R
Random Access Memory RAM ––––
Read Only Memory ROM ROM
T
Throttle Body TB Throttle Body (TB)
Throttle Body Fuel Injection TBI Throttle Body Fuel Injection (TBI)
Throttle Position Sensor TP Sensor TP Sensor (TPS)
V
Voltage Regulator VR Voltage Regulator

WIRE COLOR
B : Black O : Orange
Bl : Blue P : Pink
Br : Brown R : Red
Dbr : Dark brown W : White
Dg : Dark green Y : Yellow
Gr : Gray
B/Bl : Black with Blue tracer
B/Br : Black with Brown tracer
B/O : Black with Orange tracer
B/R : Black with Red tracer
B/W : Black with White tracer
B/Y : Black with Yellow tracer
Bl/B : Blue with Black tracer
Bl/W : Blue with White tracer
Br/W : Brown with White tracer
G/B : Green with Black tracer
G/R : Green with Red tracer
G/W : Green with White tracer
Gr/W : Gray with White tracer
O/G : Orange with Green tracer
O/W : Orange with White tracer
O/Y : Orange with Yellow tracer
R/W : Red with White tracer
W/B : White with Black tracer
W/Bl : White with Blue tracer
W/R : White with Red tracer
Y/B : Yellow with Black tracer
Y/Bl : Yellow with Blue tracer

GENERAL INFORMATION 1-1
1
GENERAL INFORMATION
CONTENTS
WARNING/CAUTION/NOTE ......................................................................... 1- 2
GENERAL PRECAUTIONS .......................................................................... 1- 2
SUZUKI LT-R450K6 (’06-MODEL) ............................................................... 1- 4
SERIAL NUMBER LOCATION ..................................................................... 1- 4
FUEL, OIL AND ENGINE COOLANT RECOMMENDATION ....................... 1- 5
FUEL (FOR USA AND CANADA) .......................................................... 1- 5
FUEL (FOR OTHER COUNTRIES) ........................................................ 1- 5
ENGINE OIL (FOR USA) ........................................................................ 1- 5
ENGINE OIL (FOR OTHER COUNTRIES)............................................. 1- 5
BRAKE FLUID ........................................................................................ 1- 5
ENGINE COOLANT................................................................................ 1- 6
BREAK-IN PROCEDURES ........................................................................... 1- 6
INFORMATION LABELS .............................................................................. 1- 7
SPECIFICATIONS......................................................................................... 1- 8
DIMENSIONS AND DRY MASS............................................................. 1- 8
ENGINE .................................................................................................. 1- 8
DRIVE TRAIN ......................................................................................... 1- 8
CHASSIS ................................................................................................ 1- 9
ELECTRICAL ......................................................................................... 1- 9
CAPACITIES .......................................................................................... 1- 9
COUNTRY AND AREA CODES
The following codes stand for the applicable country(-ies) and area(-s).
CODE COUNTRY or AREA EFFECTIVE FRAME NO.
E-19
E-28
E-33
E.U.
Canada
California (U.S.A.)
JSAAL41A 62100001 –
JSAAL41A 62100001 –
JSAAL41A 62100001 –
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If you're in need of a comprehensive workshop repair manual for the 2006 Suzuki LTR450, look no further. This manual is an invaluable resource for both professional mechanics and DIY enthusiasts alike. It provides detailed technical information, diagrams, and step-by-step procedures for maintenance, repair, and troubleshooting.
Whether you're tackling engine overhauls, electrical system diagnostics, or chassis adjustments, this manual equips you with the knowledge needed to get the job done right. With its clear and concise instructions, it's an essential tool for anyone working on the 2006 Suzuki LTR450.