Yamaha WR450FN 2022 Owner's Service Manual page 264

• Apply engine oil to the contact surfaces of the
conical washer.
• Place an aluminum plate "a" between the teeth
of the balancer drive gear "10" and balancer
weight gear "11".
• Install the conical washer with its convex sur-
face "b" outward.
4 4
5 5
5 5
4 4 4
10 10 10
3 3
4. Bend the lock washer tab.
5. Install:
• Oil pump assembly "1"
• Oil pump assembly bolt "2"
Oil pump assembly bolt
5 N·m (0.5 kgf·m, 3.7 lb·ft)
LOCTITE®
11 11 11
1 1
ECA13890
NOTICE
After tightening the bolts, make sure the oil
2 2 2
pump turns smoothly.
a a
a a
11 11 11
3 b
9 9 9
8
8
7
7
6 6
5-62
LT
1
2
OIL PUMP