Yamaha WR250F 2021 - Installing the Oil Pump

OIL PUMP
5-63
2. Install:
• Outer rotor “1”
TIP
Apply the engine oil on the outer rotor.
3. Install:
• Oil pump cover “1”
• Oil pump cover screw “2”
EAM30486
INSTALLING THE OIL PUMP
1. Install:
• Spring “1”
• Relief valve “2”
• Pin “3”
TIP
• Install the spring “1” and relief valve “2”, and
pin “3”. After installing, make sure that the relief
valve “2” does not come loose.
• Install the relief valve before installing the pri-
mary drive gear and collar.
2. Install:
• Collar “1”
• Balancer weight gear “2”
TIP
Install the balancer weight gear and balancer
shaft with their lower splines “a” aligning with
each other.
3. Install:
• Balancer drive gear “1”
• Collar “2”
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.
Oil pump cover screw
2.0 N·m (0.20 kgf·m, 1.5 lb·ft)
2
1
3
1
E
T
R
.
.
2
1
2
1
3
2
1