Yamaha YZF-R125 Service Manual: General information

Yamaha YZF-R125 Service Manual / General information

NOTICE

This manual was produced by MBK Industrie. primarily for use by Yamaha dealers and their qualified mechanics. It is not possible to include all the knowledge of a mechanic in one manual. Therefore, anyone who uses this book to perform maintenance and repairs on Yamaha vehicles should have a basic understanding of mechanics and the techniques to repair these types of vehicles. Repair and maintenance work attempted by anyone without this knowledge is likely to render the vehicle unsafe and unfit for use.

Yamaha Motor Company, Ltd. is continually striving to improve all of its models. Modifications and significant changes in specifications or procedures will be forwarded to all authorized Yamaha dealers and will appear in future editions of this manual where applicable.

NOTE:

Designs and specifications are subject to change without notice.

HOW TO USE THIS MANUAL

This manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensive explanations of all installation, removal, disassembly, assembly, repair and check procedures are laid out with the individual steps in sequential order.

  • The manual is divided into chapters and each chapter is divided into sections. The current section title "1" is shown at the top of each page.
  • Sub-section titles "2" appear in smaller print than the section title.
  • To help identify parts and clarify procedure steps, there are exploded diagrams "3" at the start of each removal and disassembly section.
  • Numbers "4" are given in the order of the jobs in the exploded diagram. A number indicates a disassembly step.
  • Symbols "5" indicate parts to be lubricated or replaced.

    Refer to "SYMBOLS".

  • A job instruction chart "6" accompanies the exploded diagram, providing the order of jobs, names of parts, notes in jobs, etc.
  • Jobs "7" requiring more information (such as special tools and technical data) are described sequentially.

HOW TO USE THIS MANUAL


SYMBOLS

The following symbols are used in this manual for easier understanding.

NOTE:

The following symbols are not relevant to every vehicle.

HOW TO USE THIS MANUAL


1. Serviceable with engine mounted

2. Filling fluid

3. Lubricant

4. Special tool

5. Tightening torque

6. Wear limit, clearance

7. Engine speed

8. Electrical data

9. Engine oil

10.Gear oil

11.Molybdenum disulfide oil

12.Brake fluid

13.Wheel bearing grease

14.Lithium-soap-based grease

15.Molybdenum disulfide grease

16. Silicone grease

17.Apply locking agent (LOCTITE).

18.Replace the part with a new one.

Yamaha YZF-R125 Service Manual
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Identification
Vehicle identification number The vehicle identification number "1" is stamped into the right side of the steering head pipe. Model label The model label "1" is affixed to the frame. This inf ...

Other materials:

Incorrect engine idling speed
Engine 1. Cylinder and cylinder head Incorrect valve clearance Damaged valve train components 2. Air filter Clogged air filter element Fuel system 1. Throttle body Damaged or loose throttle body joint Improperly adjusted engine idling speed (idle adjusting screw) Improper ...

Rider seat
To remove the rider seat Insert the key into the seat lock, and then turn it clockwise. Seat lock Open. Pull the rider seat off. To install the rider seat 1. Insert the projection on the front of the rider seat into the seat holder as shown. Projection ...

Checking the spark plug
The spark plug is an important engine component, which is easy to check. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accordance with the periodic maintenance and lubrication chart. In addition, the condition of the ...

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