Yamaha NEOS 50 YN50 (2002) [68/161] Inspection and repair

ENG

INSPECTION AND REPAIR

4-17

2. Inspect:

• Bearings (crankshaft) Pivot the inner bea-

ring guide.

Excessive play/Non-uniformity



Change

Pitting/Damage



Change

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  (roller)

Outside specified value



Change.

External diameter (roller)

15.0 mm

Limit:

14,5 mm

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