Primary Pulley Wheel; Secondary Pulley Wheel - Yamaha YB50 Service Manual

DISASSEMBLY THE ENGINE

PRIMARY PULLEY WHEEL

1. Remove:
• Fan
2. Remove:
• Nut
NOTE:
When the nut is loosened (primary pulley
wheel), support the magnetic flywheel using
the engine wheel support tool
3. Remove:
• Conical spring washer
• One-way clutch
• Washer
• Fixed primary pulley wheel
• Shim
• Trapezoidal belt
4. Remove:
• Hub
• Primary pulley wheel assembly

SECONDARY PULLEY WHEEL

1. Remove:
• Nut
NOTE:
Support the secondary pulley wheel using the
pulley wheel clamp
2. Remove:
• Clutch drum
• Secondary pulley wheel assembly
• Crankcase cover gasket
• Centring devices
4-6
ENG
(primary pulley wheel)
Engine wheel holding tool:
90890-01235
(secondary pulley wheel)
.
Pulley wheel clamp:
90890-01701