Installing The Oil Pump - Yamaha WR450FN 2022 Owner's Service Manual

3
2. Install:
• Outer rotor "1"
TIP
Apply the engine oil on the outer rotor.
E
3. Install:
• Oil pump cover "1"
• Oil pump cover bolt "2"
Oil pump cover bolt
6 N·m (0.6 kgf·m, 4.4 lb·ft)
LOCTITE®
EAM30486

INSTALLING THE OIL PUMP

1. Install:
• Balancer weight gear "1"
TIP
Install the balancer weight gear and balancer
shaft with their lower splines "a" aligning with
each other.
1
2
1
2
LT
1
5-61
1
LT
2. Install:
• Balancer drive gear "1"
TIP
• Align the punched mark "a" on the balancer
drive gear with the punched mark "b" on the
balancer weight gear.
• Install the balancer drive gear and crankshaft
with the lower splines "c" aligning with each
other.
a a
1 1 1
3. Install:
• Lock washer "1"
New
• Balancer weight gear nut "2"
Balancer weight gear nut
50 N·m (5.0 kgf·m, 37 lb·ft)
• Primary drive gear "3"
• Conical washer "4"
New
• Primary drive gear nut "5"
Primary drive gear nut
80 N·m (8.0 kgf·m, 59 lb·ft)
• Straight key "6"
• Balancer "7"
• Lock washer "8"
New
• Balancer nut "9"
Balancer nut
45 N·m (4.5 kgf·m, 33 lb·ft)
TIP
• Apply engine oil to the contact surface and
threaded portion of the primary drive gear nut.
OIL PUMP
a c
b b
c