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
4-39
ENG
KICK AXLE, SHIFT SHAFT AND PRIMARY DRIVE
GEAR
EC4C3000
REMOVAL POINTS
EC483111
Primary drive gear
1. Loosen:
9
Bolt (primary drive gear) 1
NOTE:
Place an aluminum plate a between the teeth of
the primary drive gear 2 and driven gear 3.
EC4B3101
Kick axle assembly
1. Remove:
9
Kick axle assembly 1
NOTE:
Unhook the torsion spring 2 from the hole a in
the crankcase.
EC4C3101
Shift guide and shift lever assembly
1. Remove:
9
Bolt (shift guide)
9
Shift guide 1
9
Shift lever assembly 2
NOTE:
The shift lever assembly is disassembled at the
same time as the shift guide.
EC4C4000
INSPECTION
EC4B4100
Kick axle and kick gear
1. Check:
9
Kick gear smooth movement
Unsmooth movement → Replace.
2. Inspect:
9
Kick axle 1
Wear/Damage → Replace.
EC4B4200
Kick gear and kick idle gear
1. Inspect:
9
Kick gear 1
9
Kick idle gear 2
9
Gear teeth a
Wear/Damage → Replace.
1C3-28199-10 128 04.5.17, 9:23:00 PM