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
4-12
ENG
CARBURETOR AND REED VALVE
9
Valve stopper height b
Out of specification →Adjust stopper/
Replace valve stopper.
EC465000
ASSEMBLY AND INSTALLATION
EC465190
Reed valve
1. Install:
9
Reed valve 1
9
Stopper (reed valve) 2
9
Screw (reed valve) 3
NOTE:
9
Install the reed valve with the reed valve bend-
ing as shown.
9
Note the cut a in the lower corner of the reed
and stopper plate.
cC
Tighten each screw gradually to avoid
warping.
Valve stopper height:
8.2 ~8.6 mm (0.323~0.339 in)
1 Nm (0.1 m•kg, 0.7 ft•lb)
EC464600
Float
1. Inspect:
9
Float 1
Damage → Replace.
EC464701
Reed valve
1. Measure:
9
Reed valve bending a
Out of specification → Replace.
Reed valve bending limit:
0.2 mm (0.008 in)
1C3-28199-10 101 04.5.17, 9:21:47 PM