Primary Pulley Wheel - Yamaha YB50 Service Manual

INSPECTION AND REPAIR
2. Inspect:
• Bearings (crankshaft) Pivot the inner bea-
ring guide.
Excessive
Change
Pitting/Damage

PRIMARY PULLEY WHEEL

1. Inspect:
• Primary sliding pulley wheel
• Primary fixed pulley wheel
Wear/Cracks/Striping/Damage
Change
2. Check:
• Free movement Insert the bushing in the
primary sliding pulley wheel and check if
there is free movement.
If it catches or there is excessive play
Change the pulley wheel or the bushing.
3. Measure:
• External diameter
Outside specified value
4-17
Deflection limit "C":
0.03 mm
Clearance on big end side "D":
0.2 ~ 0.5 mm
Free play at small end "F":
0.4 ~ 0.8 mm
play/Non-uniformity
Change
(roller)
External diameter (roller)
15.0 mm
Limit:
14,5 mm
ENG
Change.