Yamaha YZF-R1, Service Manual

Page: 379 / 808

CRANKSHAFT AND BALANCER SHAFT
5-96
• Crankshaft journal lower bearings
(into the lower crankcase)
• Crankshaft
TIP
• Align the projections “a” on the crankshaft jour-
nal bearings “1” with the notches “b” in the
crankcase.
• Be sure to install each crankshaft journal bear-
ings in its original place.
EAS31799
INSTALLING THE THRUST BEARING
1. Install:
• Thrust bearing “1”
TIP
• Install the thrust bearings to the both side of the
journal #4 of the upper crankcase.
• The thickness of the thrust bearing is only one.
No need to adjust the clearance between the
thrust bearing and the crankshaft.
• Install the thrust bearing with the grooves “a”
side is facing the crankshaft.
• Apply engine oil on the grooves “a” side of the
thrust bearing.
a. Insert the thrust bearing “1” into the slot of
the upper crankcase as shown in the illus-
tration and slide it in the direction of the ar-
row.
TIP
When installing the thrust bearing, shift the
crankshaft to the left to widen the gap between
the crankshaft and the crankcase.
b. Insert the thrust bearing “2” into the slot of
the upper crankcase as shown in the illus-
tration and slide it in the direction of the ar-
row.
TIP
When installing thrust bearing “2”, shift the
crankshaft to the right to widen the gap between
the crankshaft and the crankcase.
c. Check that the thrust bearing is inserted
properly into the groove of the crankcase.
EAS31172
INSTALLING THE BALANCER ASSEMBLY
1. Install:
• Balancer shaft journal upper bearings
(into the upper crankcase)
1
a
b
G0 8 9019
1
a
1
2