Service manual
Table Of Contents
- Inroduction
- Yamaha Motor Corporation, USA YZ/WR Motorcycle Limited Warranty
- How to use this Manual
- Index
- Contents
- Chapter 1 General Information
- Chapter 2 Specifications
- Chapter 3 Regular Inspection and Adjustments
- Chapter 4 Engine
- Seat, Fuel Tank and Side Covers
- Exhaust Pipe and Silencer
- Radiator
- Carburetor and Reed Valve
- Cylinder Head, Cylinder and Piston
- Clutch and Primary Driven Gear
- Kick Axle, Shift Shaft and Primary Drive Gear
- YPVS Govenor
- Water Pump
- CDI Magneto
- Engine Removal
- Crankcase and Crankshaft
- Transmission, Shift Cam and Shift Fork
- Chapter 5 Chassis
- Chapter 6 Electrical
- Chapter 7 Tuning
5-15
CHAS
FRONT BRAKE AND REAR BRAKE
EC533402
Piston seal kit
1. Remove:
9
Dust seal 1
9
Piston seal 2
NOTE:
Remove the piston seals and dust seals by
pushing them with a finger.
cC
Never attempt to pry out piston seals and
dust seals.
w
Replace the piston seals and dust seals
whenever a caliper is disassembled.
A Front
B Rear
EC5A4000
INSPECTION
EC534120
Master cylinder
1. Inspect:
9
Master cylinder inner surface a
Wear/Scratches→Replace master cylinder
assembly.
Stains→Clean.
w
Use only new brake fluid.
A Front
B Rear
2. Inspect:
9
Diaphragm 1
Crack/Damage→Replace.
A Front
B Rear
3. Inspect: (front brake only)
9
Reservoir float 1
Damage→Replace.
1C3-28199-10 178 04.5.17, 9:25:57 PM