Installing The Oil Pump And Balancer Gear - Yamaha YZ 2017 Series Owner's Service Manual

INSTALLING THE OIL PUMP AND BALANC-
EASB29B270
ER GEAR
1. Install:
• Oil pump assembly "1"
• Oil pump assembly bolt "2"
Oil pump assembly bolt
5 Nm (0.5 m·kgf, 3.6 ft·lbf)
LOCTITE®
LT
2
ECA
NOTICE
After tightening the bolts, make sure that
the oil pump turns smoothly.
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.
1
2
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 AND BALANCER GEAR
1
1
4. Install:
• Conical washer "1"
• Balancer weight gear nut "2"
Balancer weight gear nut
50 Nm (5.0 m·kgf, 36 ft·lbf)
• Primary drive gear "3"
• Conical washer "4"
• Primary drive gear nut "5"
Primary drive gear nut
75 Nm (7.5 m·kgf, 54 ft·lbf)
• Balancer "6"
• Conical washer "7"
• Balancer nut "8"
Balancer nut
38 Nm (3.8 m·kgf, 27 ft·lbf)
TIP
• Apply engine oil to the contact surface and
threaded portion of the primary drive gear nut.
• Place an aluminum plate "a" between the
teeth of the balancer drive gear "9" and bal-
ancer weight gear "10".
• Install the conical washer with its convex sur-
face "b" outward.
• Align the balancer flat portion "c" with the flat
portion "d".
• Apply the engine oil to the contact surface and
threaded portion of the balancer nut.
5-60
2
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