Crankshaft; Crankshaft Bearing - Yamaha YZ125N1 Service Manual

CRANKCASE AND CRANKSHAFT
4-64
EC4N3301

Crankshaft

1. Remove:
9Crankshaft 1
Use the crankcase separating tool 2 and
crankcase separating bolt 3.
Crankcase separating tool:
YU-1135-A/90890-01135
Crankcase separating bolt:
YM-1305/90890-01305
cC
Do not use a hammer to drive out the
crankshaft.
EC4N3401

Crankshaft bearing

1. Remove:
9Bearing 1
NOTE:
9Remove the bearing from the crankcase by
pressing its inner race as shown in
9If the bearing is removed together with the
crankshaft, remove the bearing using a general
bearing puller 2 as shown in ∫.
9Do not use the removed bearing.
EC4N4000
INSPECTION
EC4N4101
Crankcase
1. Inspect:
9Contacting surface a
Scratches Replace.
9Engine mounting boss b, crankcase
Cracks/Damage
ENG
å.
Replace.