Yamaha MM700F, Service Manual

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4-19
POWR
TR
1 2 3 4 5 6 7 8 9 0 A B C D E
a
b
DRIVE CHAIN HOUSING
SCH4440
SCH4450
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 different
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.