Yamaha VK10W Supplementary Service Manual page 32

DRIVE CHAIN HOUSING
2. Inspect:
• Drive sprocket
• Driven sprocket
• Driven gear
• Reverse drive gear
• Counter gear
• Low pinion gear
• Low wheel gear
• Low drive gear
• Journal
• Chain tensioner
Pitting/wear/damage → Replace.
• Drive chain
Wear/damage → Replace.
Shift → Clean or replace.
• Shift lever assembly
• Bearing (chain tensioner)
Pitting/damage → Replace the bearing and
the inner race holder as a set.
3. Measure:
• 14 link section a of the drive chain
Using a spring scale, pull on the drive chain
with 36 kg (80 lb) of force b.
Out of specification → Replace the drive
chain.
Maximum 14 link drive chain section
length:
133.35 mm (5.25 in)
Limit: 137.35 mm (5.41 in)
NOTE:
• Measure the length between drive chain pin 1
and E as shown.
• Perform this measurement at two or three differ-
ent places.
If replacement is necessary, always replace the
chain and the sprockets as a set.
4. Inspect:
• Drive chain 1
Stiffness → Clean and lubricate or replace.
• Drive chain plates 2
Damage/wear → Replace the drive chain.
Cracks → Replace the drive chain.
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POWR
TR