Removing The Primary Drive Gear And Balancer Gears; Checking The Balancer Gears And Primary Drive Gear; Installing The Primary Drive Gear And Balancer Gears - Yamaha YZF-R15 Service Manual

REMOVING THE PRIMARY DRIVE GEAR
AND BALANCER GEARS
1. Loosen:
• Primary drive gear nut "1"
NOTE:
Place the aluminum plate "a" between balancer
drive gear "2" and balancer driven gear "3", and
then loosen the primary drive gear nut.
2
1
2. Straighten the lock washer tab.
3. Loosen:
• Balancer driven gear nut "1"
NOTE:
Place the aluminum plate "a" between balancer
drive gear "2" and balancer driven gear "3", and
then loosen the balancer driven gear nut.
2
CHECKING THE BALANCER GEARS AND
PRIMARY DRIVE GEAR
1. Check:
• Balancer drive gear
• Balancer driven gear
• Buffer boss
• Spring
• Dowel pin
Cracks/damage/wear → Replace.
2. Check:
• Primary drive gear
Refer to "CHECKING THE PRIMARY DRIVE
GEAR" on page 5-42.
ASSEMBLING THE BALANCER DRIVEN
GEAR
1. Assemble:
• Dowel pins "1"
• Springs "2"
NOTE:
Install the dowel pins and springs alternately as
shown as.
3
a
2. Assemble:
• Buffer boss "1"
• Balancer driven gear "2"
NOTE:
Align the punch mark "a" in the buffer boss with
the punch mark "b" in the balancer driven gear.
a
1
3
INSTALLING THE PRIMARY DRIVE GEAR
AND BALANCER GEARS
1. Install:
• Balancer driven gear "1"
• Lock washer
• Balancer drive gear "2"
• Primary drive gear
• Washer "3"
• Balancer driven gear nut
• Primary drive gear nut
NOTE:
• Align the punch mark "a" in the balancer drive
gear "2" with the punch mark "b" in the balancer
driven gear "1".
5-53
BALANCER GEAR
(to the buffer boss)
b
a
New
1
2
1
2