Removing The Balancer Driven Gear And Oil Pump Driven Gear; Checking The Oil Pump Drive; Checking The Balancer Drive - Yamaha YFM7FGPW Service Manual

BALANCER GEARS AND OIL PUMP GEARS
3
4
REMOVING THE BALANCER DRIVEN
5
GEAR AND OIL PUMP DRIVEN GEAR
1. Straighten the lock washer tabs.
1
2. Loosen:
• balancer driven gear nut 1
• oil pump driven gear nut 2
NOTE:
Place an aluminum plate 3 between the teeth
2
of the balancer drive gear 4 and balancer
driven gear 5, then loosen the nuts.

CHECKING THE OIL PUMP DRIVE

1. Check:
• oil pump drive gear
• oil pump driven gear

CHECKING THE BALANCER DRIVE

1. Check:
• balancer drive gear
• balancer driven gear
4 - 51
Cracks/wear/damage → Replace.
Damage/wear → Replace the balancer
drive gear and balancer driven gear as a
set.
Excessive noise during
Replace the balancer drive gear and bal-
ancer driven gear as a set.
ENG
→
operation