Yamaha YZ250 Handbuch Seite 356

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CRANKCASE AND CRANKSHAFT
B
EC4N5000
ASSEMBLY AND INSTALLATION
EC4N5300
Crankshaft bearing
1. Install:
9 Bearing 1
To crankcase (left and right).
NOTE:
Install the bearing by pressing its outer race
parallel.
EC4N5102
Oil seal
1. Install:
9 Oil seal (left) 1
9 Oil seal (right) 2
NOTE:
9 Apply the lithium soap base grease on the oil
seal lip.
9 Install the oil seal with its manufacture's marks
or numbers facing outward.
EC4N5284
Crankshaft
1. Install:
9 Crankshaft 1
Use the crankshaft installing tool 2, 3, 4.
Crankshaft installing tool:
Pot 2:
Bolt 3:
Adapter 4: YU-90063/90890-01278
å For USA and CDN
∫ Except for USA and CDN
NOTE:
9 Hold the connecting rod at top dead center with
one hand while turning the nut of the installing
tool with the other. Operate the installing tool
until the crankshaft bottoms against the bear-
ing.
9 Before installing the crankshaft, clean the con-
tacting surface of crankcase.
9 Apply the lithium soap base grease on the oil
seal lip.
cC
Do not use a hammer to drive in the crank-
shaft.
4-69
ENG
YU-90050/90890-01274
YU-90050/90890-01275