Bearings And Oil Seals Inspection; Timing Chain, Timing Chain Drive Sprocket And Timing Chain Guides Inspection - Yamaha Scorpio Service Manual

CRANKCASE AND CRANKSHAFT
4 - 60
5.Inspect:
Crankshaft journal
G
Clogged → Blow out the journal with com-
pressed air.
EAS00401

BEARINGS AND OIL SEALS INSPECTION

1.Check:
Bearings
G
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement → Replace.
2.Check:
Oil seals
G
Damage/wear → Replace.
EAS00207
TIMING CHAIN, TIMING CHAIN DRIVE
SPROCKET AND TIMING CHAIN GUIDES
INSPECTION
1.Check:
Timing chain
G
Damage/stiffness → Replace the timing
chain and camshaft sprocket as a set.
2.Check:
Timing chain drive sprocket
G
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
ENG