Checking The Timing Chain And Guide; Checking The Oil Strainer And Oil Delivery Pipe - Yamaha YFM4FAR Service Manual

CRANKCASE
G
Remove the left crankcase.
CAUTION:
Use a soft hammer to tap on one side of the
crankcase. Tap only on reinforced portions
of the crankcase. Do not tap on the
crankcase mating surfaces. Work slowly
and carefully. Make sure that the crankcase
halves separate evenly.
G
Remove the dowel pins.
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CHECKING THE TIMING CHAIN AND GUIDE

1.Check:
Timing chain
G
Cracks/stiff → Replace the timing chain and
camshaft sprocket as a set.
2.Check:
Intake side timing chain guide
G
Wear/damage → Replace.
CHECKING THE OIL STRAINER AND OIL
DELIVERY PIPE
1.Check:
Oil strainer 1
G
2.Check:
Oil delivery pipe
G
Cracks/damage → Replace.
Clogged → Blow out with compressed air.
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ENG