Yamaha Scorpio - Bearings and Oil Seals Inspection; Timing Chain, Timing Chain Drive Sprocket and Timing Chain Guides Inspection

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ENG
CRANKCASE AND CRANKSHAFT
5.Inspect:
●
Crankshaft journal
Clogged
→
Blow out the journal with com-
pressed air.
EAS00401
BEARINGS AND OIL SEALS INSPECTION
1.Check:
●
Bearings
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement
→
Replace.
2.Check:
●
Oil seals
Damage/wear
→
Replace.
EAS00207
TIMING CHAIN, TIMING CHAIN DRIVE
SPROCKET AND TIMING CHAIN GUIDES
INSPECTION
1.Check:
●
Timing chain
Damage/stiffness
→
Replace the timing
chain and camshaft sprocket as a set.
2.Check:
●
Timing chain drive sprocket
More than 1/4 tooth
a
wear
→
Replace the
camshaft sprocket and the timing chain as a
set.
a
1/4 tooth
b
Correct
1
Timing chain roller
2
Timing chain drive sprocket