Yamaha DT125R Manual de usuario

PRINTED ON RECYCLED PAPER PRINTED IN JAPAN

2001·6–0.3×1(E) !

OWNER’S MANUAL

3MB-28199-E8

DT125R

YAMAHA MOTOR CO., LTD.

EAU03338 INTRODUCTION

Welcome to the Yamaha world of motorcycling!

As the owner of a DT125R, you are benefiting from Yamaha’s vast experience and newest technolo-

gy regarding the design and manufacture of high-quality products, which have earned Yamaha a rep-

utation for dependability.

Please take the time to read this manual thoroughly, so as to enjoy all advantages of your DT125R.

The owner’s manual does not only instruct you in how to operate, inspect and maintain your motorcy-

cle, but also in how to safeguard yourself and others from trouble and injury.

In addition, the many tips given in this manual will help keep your motorcycle in the best possible

condition. If you have any further questions, do not hesitate to contact your Yamaha dealer.

The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!

3MB-9-E8 6/13/01 10:55 AM Page 1

EAU00005

IMPORTANT MANUAL INFORMATION

Particularly important information is distinguished in this manual by the following notations:

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS

INVOLVED!

Failure to follow WARNING instructions could result in severe injury or death to the

motorcycle operator, a bystander, or a person inspecting or repairing the motorcycle.

A CAUTION indicates special precautions that must be taken to avoid damage to

the motorcycle.

A NOTE provides key information to make procedures easier or clearer.

NOTE:

8This manual should be considered a permanent part of this motorcycle and should remain

with it even if the motorcycle is subsequently sold.

8Yamaha continually seeks advancements in product design and quality. Therefore, while this

manual contains the most current product information available at the time of printing, there

may be minor discrepancies between your motorcycle and this manual. If you have any ques-

tions concerning this manual, please consult your Yamaha dealer.

3MB-9-E8 6/13/01 10:55 AM Page 2

IMPORTANT MANUAL INFORMATION

EW000002

PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING

THIS MOTORCYCLE.

3MB-9-E8 6/13/01 10:55 AM Page 3

DT125R

OWNER’S MANUAL

1st Edition, May 2001

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Co., Ltd.

is expressly prohibited.

Printed in Japan.

EAU03337

3MB-9-E8 6/13/01 10:55 AM Page 4

EAU00009 TABLE OF CONTENTS

GIVE SAFETY THE RIGHT OF WAY ............... 1-1

DESCRIPTION .................................................. 2-1

Left view ......................................................... 2-1

Right view ....................................................... 2-2

Controls and instruments ............................... 2-3

INSTRUMENT AND CONTROL FUNCTIONS .. 3-1

Main switch ..................................................... 3-1

Indicator and warning lights ............................ 3-1

Speedometer unit .......................................... 3-2

Tachometer .................................................... 3-2

Coolant temperature gauge ............................ 3-3

Handlebar switches ........................................ 3-3

Clutch lever .................................................... 3-4

Shift pedal ...................................................... 3-4

Brake lever ..................................................... 3-5

Brake pedal .................................................... 3-5

Fuel tank cap .................................................. 3-5

Fuel (except for Switzerland and Austria) ...... 3-6

Fuel (for Switzerland and Austria) ................. 3-6

Catalytic converter

(for Switzerland and Austria) ....................... 3-7

2-stroke engine oil .......................................... 3-8

Fuel cock ........................................................ 3-9

Starter (choke) lever ..................................... 3-10

Kickstarter .................................................... 3-10

Steering lock ................................................. 3-10

Seat .............................................................. 3-11

Helmet holder ............................................... 3-12

Adjusting the shock absorber assembly ....... 3-12

Carrier .......................................................... 3-14

YEIS handling precautions .......................... 3-14

YPVS ............................................................ 3-14

Sidestand ..................................................... 3-15

Ignition circuit cut-off system ........................ 3-16

PRE-OPERATION CHECKS ............................. 4-1

Pre-operation check list .................................. 4-1

OPERATION AND IMPORTANT

RIDING POINTS ............................................... 5-1

Starting a cold engine .................................... 5-1

Starting a warm engine .................................. 5-2

Shifting ........................................................... 5-2

Recommended shift points

(for Switzerland only) .................................. 5-3

Tips for reducing fuel consumption ................ 5-3

Engine break-in .............................................. 5-4

Parking ........................................................... 5-5

3MB-9-E8 6/13/01 10:55 AM Page 5

PERIODIC MAINTENANCE AND

MINOR REPAIR ................................................ 6-1

Owner’s tool kit ............................................... 6-1

Periodic maintenance and lubrication chart ... 6-2

Removing and installing cowlings .................. 6-5

Removing and installing panels ...................... 6-7

Checking the spark plug ................................. 6-9

Transmission oil ........................................... 6-10

Coolant ......................................................... 6-12

Changing the coolant ................................... 6-14

Cleaning the air filter element........................ 6-16

Adjusting the carburetor ............................... 6-17

Adjusting the engine idling speed ................ 6-17

Adjusting the throttle cable free play ............ 6-18

Tires ............................................................. 6-19

Spoke wheels ............................................... 6-21

Adjusting the clutch lever free play ............... 6-22

Adjusting the brake lever free play ............... 6-23

Adjusting the brake pedal position ............... 6-23

Adjusting the rear brake light switch ............. 6-24

Checking the front and rear brake pads ....... 6-24

Checking the brake fluid level ...................... 6-25

Changing the brake fluid .............................. 6-26

Drive chain slack .......................................... 6-27

Lubricating the drive chain ........................... 6-28

Checking and lubricating the cables ............. 6-29

Checking and lubricating the

throttle grip and cable ................................ 6-29

Adjusting the Autolube pump ....................... 6-30

Checking and lubricating the brake and

shift pedals ................................................ 6-30

Checking and lubricating the brake and

clutch levers .............................................. 6-30

Checking and lubricating the sidestand ....... 6-31

Checking the front fork ................................. 6-31

Checking the steering ................................... 6-32

Checking the wheel bearings ....................... 6-32

Battery .......................................................... 6-33

Replacing the fuse ....................................... 6-35

Replacing the headlight bulb ........................ 6-36

Replacing a turn signal light bulb ................. 6-37

Replacing the tail/brake light bulb ................ 6-38

Supporting the motorcycle ............................ 6-39

Front wheel ................................................... 6-39

Rear wheel ................................................... 6-42

Troubleshooting ............................................ 6-43

Troubleshooting charts ................................. 6-44

MOTORCYCLE CARE AND STORAGE ........... 7-1

Care ................................................................ 7-1

Storage ........................................................... 7-4

TABLE OF CONTENTS

3MB-9-E8 6/13/01 10:55 AM Page 6

TABLE OF CONTENTS

SPECIFICATIONS ............................................ 8-1

Conversion table ............................................ 8-5

CONSUMER INFORMATION ........................... 9-1

Identification numbers .................................... 9-1

Key identification number ............................... 9-1

Vehicle identification number ......................... 9-1

Model label ..................................................... 9-2

3MB-9-E8 6/13/01 10:55 AM Page 7

1-1

EAU00021

QGIVE SAFETY THE RIGHT OF WAY

Motorcycles are fascinating vehicles, which can give you an unsurpassed feeling of power and free-

dom. However, they also impose certain limits, which you must accept; even the best motorcycle

does not ignore the laws of physics.

Regular care and maintenance are essential for preserving value and operating condition of your

motorcycle. Moreover, what is true for the motorcycle is also true for the rider: good performance

depends on being in good shape. Riding under the influence of medication, drugs and alcohol is, of

course, out of the question. Motorcycle riders—more than car drivers—must always be at their mental

and physical best. Under the influence of even small amounts of alcohol, there is a tendency to take

dangerous risks.

Protective clothing is as essential for the motorcycle rider as seat belts are for car drivers and passen-

gers. Always wear a complete motorcycle suit (whether made of leather or tear-resistant synthetic

materials with protectors), sturdy boots, motorcycle gloves and a properly fitting helmet. Optimum pro-

tective wear, however, should not encourage carelessness. Although full-coverage helmets and suits,

in particular, create an illusion of total safety and protection, motorcyclists will always be vulnerable.

Riders who lack critical self-control run the risk of going too fast and are apt to take chances. This is

even more dangerous in wet weather. The good motorcyclist rides safely, predictably and defensive-

ly—avoiding all dangers, including those caused by others.

Enjoy your ride!

3MB-9-E8 6/13/01 10:55 AM Page 8

3MB-9-E8 6/13/01 10:55 AM Page 9

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