Installing The Crankshaft Assembly; Installing The Balancer Shaft - Yamaha WR250F Owner's Service Manual

CRANKSHAFT ASSEMBLY AND BALANCER SHAFT
INSTALLING THE CRANKSHAFT ASSEM-
EAS2GB2322
BLY
1. Install:
• Crankshaft assembly
TIP
Install the crankshaft assembly with the crank-
shaft installer pot "1", crankshaft installer bolt
"2", adapter (M12) "3" and spacer "4".
Crankshaft installer pot
90890-01274
Installing pot
YU-90058
Crankshaft installer bolt
90890-01275
Bolt
YU-90060
Adapter (M12)
90890-01278
Adapter #3
YU-90063
Spacer (crankshaft installer)
90890-04081
Pot spacer
YM-91044
ECA
NOTICE
• To avoid scratching the crankshaft and to
ease the installation procedure, lubricate
the oil seal lips with lithium-soap-based
grease.
• In order to prevent the crankshaft seizure,
apply molybdenum disulfide grease.
TIP
Hold the connecting rod at top dead center
(TDC) with one hand while turning the nut of the
crankshaft installer bolt with the other. Turn the
crankshaft installer bolt until the crankshaft as-
sembly bottoms against the bearing.

INSTALLING THE BALANCER SHAFT

EAS2GB2323
1. Install:
• Balancer shaft "1"
TIP
Apply the molybdenum grease to the part "a"
where the balancer shaft fit into the bearing.
ECA
NOTICE
Do not apply the molybdenum grease to the
balancer shaft thread.
6-75
1
M
a