Yamaha YZ 2020 Series, Owner'S Service Manual

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OIL PUMP
5-64
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:
• Oil pump assembly “1”
•
Oil pump assembly bolt “2”
NOTICE
ECA13890
After tightening the bolts, make sure the oil
pump turns smoothly.
3. 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.
4. 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 assembly bolt
5 N·m (0.5 kgf·m, 3.7 lb·ft)
LOCTITE®
2
1
3
T
R
.
.
LT
1
2 2
2
1
a
b
1
1
2