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
4-33
CLUTCH AND PRIMARY DRIVEN GEAR
ENG
EC484500
Friction plate
1. Measure:
9
Friction plate thickness
Out of specification → Replace friction
plate as a set.
Measure at all four points.
EC484600
Clutch plate
1. Measure:
9
Clutch plate warpage
Out of specification → Replace clutch plate
as a set.
Use a surface plate 1 and thickness
gauge 2.
EC484700
Push lever axle
1. Inspect:
9
Push lever axle 1
Wear/Damage → Replace.
EC484810
Push rod
1. Inspect:
9
Push rod 1 1
9
Bearing 2
9
Plain washer 3
9
Push rod 2 4
9
Ball 5
Wear/Damage/Bend → Replace.
EC495000
ASSEMBLY AND INSTALLATION
EC485120
Push lever axle
1. Install:
9
Push lever axle 1
NOTE:
Apply the lithium soap base grease on the oil
seal lip and push lever axle.
Friction plate thickness:
Standard <Limit>
2.9~3.1 mm 2.8 mm
(0.114~0.122 in) (0.110 in)
Warp limit:
0.2 mm (0.008 in)
1C3-28199-10 122 04.5.17, 9:22:44 PM