Yamaha RS90K Manuel D'atelier page 554

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b
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5-68
CRANKCASE
5. Tighten:
• Balancer weight bolts 1
NOTE:
Place a wood a between the balancer 2 and
crankcase.
Balancer weight bolt:
35 Nm (3.5 m · kg, 25 ft · lb)
6. Bend the lock washer tab.
7. Install:
• Crankshaft journal upper bearing
(into the upper crankcase)
• Crankshaft journal lower bearing
(into the lower crankcase)
NOTE:
• Align the projections a on the crankshaft journal
bearings with the notches b in the crankcase.
• Be sure to install each crankshaft journal bearing
in its original place.
8. Install:
• Primary sheave drive shaft assembly 1
• Bearing 2
NOTE:
Install the bearing with its hole a facing towards
the crankshaft.
9. Install:
• Crankshaft 1
NOTE:
Align the punch mark a of the balancer drive gear
2 on the crankshaft with the punch mark b of the
balancer driven gear 3.
ENG