4-67
CRANKCASE AND CRANKSHAFT
ENG
EC4N4000
INSPECTION
EC4N4101
Crankcase
1. Inspect:
9
Contacting surface
a
Scratches
→
Replace.
9
Engine mounting boss
b
, crankcase
Cracks/Damage
→
Replace.
EC4N3401
Crankshaft bearing
1. Remove:
9
Bearing
1
NOTE:
9
Remove the bearing from the crankcase by
pressing its inner race as shown in
å
.
9
If the bearing is removed together with the
crankshaft, remove the bearing using a general
bearing puller
2
as shown in
∫
.
9
Do not use the removed bearing.
EC4N3302
Crankshaft
1. Remove:
9
Crankshaft
1
Use the crankcase separating tool
2
.
NOTE:
Make appropriate bolts
3
as shown available by
yourself and attach the tool with them.
c
C
Do not use a hammer to drive out the
crankshaft.
Crankcase separating tool:
YU-1135-A/90890-01135
1P8-9-32-4c 5/1/06 10:46 AM Page 36
Summary of Contents for YZ250(W)/W1
Page 78: ...2 11 MAINTENANCE SPECIFICATIONS SPEC MEMO...
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