YAMAHA SR125 2000 Owners Manual

PRINTED IN JAPAN
2001 · 2 - 0.3 ´ 1 CR
(E) PRINTED ON RECYCLED PAPER
YAMAHA MOTOR CO., LTD.
3MW-28199-E3
OWNER’S MANUAL
SR125

F_5eb_Toc0.fm Page 2 Wednesday, February 2, 2000 2:02 PM

EAU00001
INTRODUCTION
Welcome to the Yamaha world of motorcycling!
As the owner of a SR125, you are benefiting from Yamaha’s vast experience in and
newest technology for the design and the manufacture of high-quality products,
which have earned Yamaha a reputation for dependability.
Please take the time to read this manual thoroughly, so as to enjoy all your SR125’s
advantages. The owner’s manual does not only instruct you in how to operate,
inspect and maintain your motorcycle, but also in how to safeguard yourself and oth-
ers from trouble and injury.
In addition, the many tips given in this manual will help to keep your motorcycle in
the best possible condition. If you have any further questions, do not hesitate to con-
tact your Yamaha dealer.
The Yamaha team wishes you many safe and pleasant rides. So, remember to put
safety first!
E_3mw.book Page 1 Monday, February 5, 2001 9:54 AM

EAU00005
IMPORTANT MANUAL INFORMATIONParticularly important information is distinguished in this manual by the following notations:
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
WARNING
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.
CAUTION:A CAUTION indicates special precautions that must be taken to avoid damage to the
motorcycle.NOTE:
A NOTE provides key information to make procedures easier or clearer.
NOTE:@ l
This manual should be considered a permanent part of this motorcycle and should remain
with it even if the motorcycle is subsequently sold.
l
Yamaha 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 there is any
question concerning this manual, please consult your Yamaha dealer.
@
E_3mw.book Page 1 Monday, February 5, 2001 9:54 AM

IMPORTANT MANUAL INFORMATION
EW000002
WARNING
@ PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING
THIS MOTORCYCLE. @
E_3mw.book Page 2 Monday, February 5, 2001 9:54 AM

IMPORTANT MANUAL INFORMATION
EAU03337
SR125
OWNER’S MANUAL
© 2001 by Yamaha Motor Co., Ltd.
1st Edition, January 2001
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan.
E_3mw.book Page 3 Monday, February 5, 2001 9:54 AM

EAU00009
TABLE OF CONTENTS
GIVE SAFETY THE RIGHT OF WAY ..................1-1
DESCRIPTION ....................................................2-1
Left view ............................................................. 2-1
Right view...........................................................2-2
Controls/Instruments ..........................................2-3
INSTRUMENT AND CONTROL FUNCTIONS ....3-1
Main switch/steering lock ................................... 3-1
Indicator lights ....................................................3-2
Speedometer......................................................3-2
Handlebar switches ............................................3-2
Clutch lever ........................................................3-4
Shift pedal ..........................................................3-4
Front brake lever ................................................ 3-4
Rear brake pedal................................................ 3-5
Fuel tank cap......................................................3-5
Fuel ....................................................................3-6
Fuel cock ............................................................3-6
Starter (choke) knob...........................................3-7
Seat ....................................................................3-8
Helmet holder .....................................................3-8
Rear shock absorber adjustment .......................3-9
Sidestand ...........................................................3-9
Sidestand/clutch switch operation check ......... 3-10PRE-OPERATION CHECKS ...............................4-1
Pre-operation check list......................................4-1
OPERATION AND IMPORTANT RIDING
POINTS................................................................5-1
Starting the engine .............................................5-1
Starting a warm engine ......................................5-3
Shifting ...............................................................5-4
Recommended shift points
(for Switzerland only) ......................................5-4
Tips for reducing fuel consumption ....................5-5
Engine break-in ..................................................5-5
Parking ...............................................................5-6
PERIODIC MAINTENANCE AND MINOR
REPAIR................................................................6-1
Tool kit................................................................6-1
Periodic maintenance and lubrication chart .......6-2
Panel removal and installation ...........................6-5
Panels A and B ..................................................6-5
Spark plug ..........................................................6-6
Engine oil ...........................................................6-8
Air filter .............................................................6-10
Carburetor adjustment .....................................6-11
Idle speed adjustment ......................................6-11
123
456
E_3mw.book Page 1 Monday, February 5, 2001 9:54 AM

TABLE OF CONTENTS
Throttle cable free play adjustment .................. 6-12
Cam chain adjustment ..................................... 6-12
Valve clearance adjustment ............................. 6-13
Tires ................................................................. 6-13
Wheels ............................................................. 6-15
Clutch lever free play adjustment..................... 6-16
Front brake lever free play adjustment ............ 6-16
Rear brake pedal height and free play
adjustment .................................................... 6-17
Brake light switch adjustment .......................... 6-18
Checking the front brake pads and
rear brake shoes .......................................... 6-19
Inspecting the brake fluid level......................... 6-20
Brake fluid replacement ................................... 6-20
Drive chain slack check ................................... 6-21
Drive chain slack adjustment ........................... 6-22
Drive chain lubrication...................................... 6-23
Cable inspection and lubrication ...................... 6-23
Throttle cable and grip lubrication .................... 6-23
Brake and shift pedal lubrication ...................... 6-24
Brake and clutch lever lubrication .................... 6-24
Center and sidestand lubrication ..................... 6-24
Front fork inspection ........................................ 6-25
Steering inspection .......................................... 6-26
Wheel bearings ................................................ 6-26
Battery.............................................................. 6-26
Fuse replacement ............................................ 6-28
Headlight bulb replacement ............................. 6-29Turn signal and tail/brake light bulb
replacement.................................................. 6-30
Front wheel removal ........................................ 6-30
Front wheel installation .................................... 6-31
Rear wheel removal ......................................... 6-32
Rear wheel installation ..................................... 6-33
Troubleshooting ............................................... 6-33
Troubleshooting chart ...................................... 6-34
MOTORCYCLE CARE AND STORAGE ............. 7-1
Care ................................................................... 7-1
Storage .............................................................. 7-4
SPECIFICATIONS ............................................... 8-1
Specifications ..................................................... 8-1
How to use the conversion table ........................ 8-5
CONSUMER INFORMATION.............................. 9-1
Identification number records............................. 9-1
Key identification number................................... 9-1
Vehicle identification number ............................. 9-1
Model label......................................................... 9-2
789
E_3mw.book Page 2 Monday, February 5, 2001 9:54 AM

1
1-1
EAU00021
1-
GIVE SAFETY THE RIGHT OF WAY
Motorcycles are fascinating vehicles, which can give you an unsurpassed feeling of power and
freedom. 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 your motorcycle’s value and operating
condition. 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
passengers. 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 protective wear, however, should not encourage carelessness. Though 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 defensively - avoiding all dangers, including those caused by others.
Enjoy your ride!
E_3mw.book Page 1 Monday, February 5, 2001 9:54 AM

2-1
2
EAU00026
2-DESCRIPTIONLeft view1. Fuel tank cap (page 3-5)
2. Fuel cock (page 3-6)
3. Helmet holder (page 3-8)
4. Fuse box (page 6-28)5. Sidestand (page 3-9)
6. Starter (choke) knob (page 3-7)
7. Shift pedal (page 3-4)
E_3mw.book Page 1 Monday, February 5, 2001 9:54 AM