Checking The Crankcase - Yamaha XF50W Service Manual

^ ^ ^ //\
y>^ y&
my
y%
y/y
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(if
3. Measure:
4. Check:
b
^ ^ L
5. Check:
EAS00399

CHECKING THE CRANKCASE

1. Thoroughly wash the crankcase halves in
2. Thoroughly clean all the gasket surfaces
3. Check:
5-70
CRANKSHAFT
• crankshaft width
Out of specification -»Replace the crank-
shaft.
Crankshaft width
42.45~42.50mm(1.671~1.673in)
•crankshaft sprocket
Damage/wear -»Replace the crankshaft.
•bearing (2)
Cracks/damage/wear
crankshaft.
•oil pump drive gear
Damage/wear -» Replace the crankshaft.
•crankshaft journal
Scratches/wear -»
shaft.
•crankshaft journal oil passage
Obstruction -» Blow out with compressed
air.
a mild solvent.
and crankcase mating surfaces.
•crankcase
Cracks/damage -»
•oil delivery passages
Obstruction -» Blow out with compressed
air.
ENG
m
%
(T)
-» Replace the
Replace the crank-
Replace.