Yamaha FJR1300A - Checking the Balancers; Installing the Front Balancer

BALANCERS
5-105
EAS26120
CHECKING THE BALANCERS
1. Check:
• Front balancer gear
Damage/wear → Replace the front balancer
gear and crankshaft.
• Rear balancer gear
Damage/wear → Replace the rear balancer
gear and clutch housing.
2. Check:
• Balancer shafts
Cracks/damage/wear → Replace the balanc-
er shaft and bearings.
Dirt → Clean.
• Bearings
Damage/wear → Replace.
• Dampers
Damage/wear → Replace.
ET3P61032
INSTALLING THE FRONT BALANCER
1. Install:
• Front balancer gear “1”
• Dampers “2”
• Front balancer weight “3”
• Bearings
• Washers
NOTE:
• Install the dampers onto the balancer gear so
that the middle section “a” of each damper is
positioned to the outside of the gear projec-
tions as shown in the illustration.
• Align the punch mark “b” in the balancer weight
with the mark “c” in the balancer gear.
2. Align:
•“T” mark on the pickup rotor
(with the crankcase mating surface)
▼▼▼▼▼▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Turn the crankshaft clockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the “T” mark “a” on the pick-
up rotor with the crankcase mating surface
“b”.
▲▲▲▲▲▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
3. Install:
• Front balancer shaft
▼▼▼▼▼▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Align the punch mark “a” in the balancer
weight with the oil hole “b” in the upper crank-
case.
NOTE:
• Make sure that the front balancer gear teeth
and the balancer drive gear teeth mesh cor-
rectly.
• Make sure that the slot “c” is facing in the direc-
tion indicated in the illustration when installing
the balancer shaft.
aa
2
2
1
b
c
3
1
a
b
a
b
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