Yamaha FX10B Owner's Manual page 35

Rear torsion springs
EWS00750
WARNING
The left and right spring preloads must be
adjusted to the same setting. Uneven set-
tings can cause poor handling and loss of
stability.
To increase the spring preload and thereby
harden the suspension, turn the adjuster in di-
rection (a). To decrease the spring preload
and thereby soften the suspension, turn the
adjuster in direction (b).
(a)
1
1. Spring preload adjuster
Spring preload setting:
Minimum (soft):
S
Standard:
M
Maximum (hard):
H
ESU13631
Adjusting the air pressure of the cen-
ter shock absorber and the rear shock
absorber (FX10M53S/FX10M62S)
A shock absorber pump is provided with your
snowmobile to adjust the air pressure of the
shock absorbers. This pump is equipped with
an air pressure gauge. One side of the gauge
has a low-pressure meter and the other side
of the gauge has a high-pressure meter. Use
(b)
Control functions
the low-pressure meter to adjust the center
shock absorber and the high-pressure meter
to adjust the rear shock absorber.
1
1. Shock absorber pump
2. Pressure gauge (low-pressure meter)
3. Pressure gauge (high-pressure meter)
EWS00621
WARNING
Support the snowmobile securely on a
suitable stand before adjusting the shock
absorbers. Otherwise, the snowmobile
could fall and cause injury.
ECS00710
NOTICE
Make sure that there is no load on the
shock absorbers and that they are fully ex-
tended before making any air pressure ad-
justments.
Center shock absorber
To adjust the air pressure
1. Place the snowmobile on a level surface
and apply the parking brake.
2. Lift the rear of the snowmobile onto a suit-
able stand to raise the drive track off the
ground.
3. Remove the air valve cap from the shock
absorber.
3
150
10
15
5
20
0
bar
psi
2
29