Yamaha WR450FN 2022, Owner'S Service Manual

Page: 263 / 402

OIL PUMP
5-61
2. Install:
• Outer rotor “1”
TIP
Apply the engine oil on the outer rotor.
3. Install:
•
Oil pump cover “1”
• Oil pump cover bolt “2”
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.
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.
3. Install:
•
Lock washer “1”
• Balancer weight gear nut “2”
•
Primary drive gear “3”
• Conical washer “4”
•
Primary drive gear nut “5”
• Straight key “6”
•
Balancer “7”
• Lock washer “8”
•
Balancer nut “9”
TIP
• Apply engine oil to the contact surface and
threaded portion of the primary drive gear nut.
Oil pump cover bolt
6 N·m (0.6 kgf·m, 4.4 lb·ft)
LOCTITE®
2
1
3
1
E
T
R
.
.
2
1
LT
Balancer weight gear nut
50 N·m (5.0 kgf·m, 37 lb·ft)
Primary drive gear nut
80 N·m (8.0 kgf·m, 59 lb·ft)
Balancer nut
45 N·m (4.5 kgf·m, 33 lb·ft)
1
c a
LT
1 1 1
c
b b
a a
Ne w
T
R
.
.
Ne w
T
R
.
.
Ne w
T
R
.
.