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
3-15
INSP
ADJ
IDLE SPEED ADJUSTMENT/MUFFLER INSPECTION/
SILENCER FIBER REPLACEMENT
EC35M010
IDLE SPEED ADJUSTMENT
1. Start the engine and thoroughly warm it up.
2. Adjust:
9
Idle speed
EC35P030
MUFFLER INSPECTION
1. Inspect:
9
O-ring 1
Damage → Replace.
NOTE:
Install the O-rings with their depressed a facing
outward.
EC35R050
SILENCER FIBER REPLACEMENT
1. Remove:
9
Side cover (right)
9
Bolt (silencer) 1
9
Silencer 2
9
Bolt (fiber) 3
Adjustment steps:
9
Loosen the locknut 1.
9
Turn the throttle stop screw 2 until the en-
gine runs at the lowest possible speed.
9
Tighten the locknut.
To increase idle speed → Turn the throttle
stop screw
2
in.
To decrease idle speed → Turn the throttle
stop screw
2
out.
1C3-28199-10 64 04.5.17, 9:20:18 PM