36
0748-941
To adjust the damping, use the adjust-
ment lever located above the EVOL
chamber on the shock. There are three
settings that may be chosen 1, 2, or 3.
0745-159
Adjusting Fox Air Shocks
NOTE: It is recommended to
monitor the air pressure in the air
shocks once every month.
NOTE: Adjusting air shocks may
be done by the snowmobile owner
if qualified to do so. If the owner
does not feel qualified, take the
snowmobile to an authorized
Yamaha Snowmobile dealer for this
service. This service is at the dis-
cretion and expense of the snow-
mobile owner.
The air shocks are individually adjustable
for the terrain conditions and driving style
of the operator. The shocks are preset at the
factory (see chart) as an initial setting;
however, it is possible to “fine tune” the
shocks to match the operator’s weight, rid-
ing style, and terrain conditions.
NOTE: Adding air pressure will
increase the air spring force;
reducing air pressure will decrease
air spring force.
NOTE: Shock Pressure should be
checked/added at room tempera-
ture of 65 to 70 degrees. The fol-
lowing settings are recommended
but vary on rider preference or
style.
NOTE: Care should be taken to
have equal pressure in the front ski
shocks before operating the snow-
mobile.
To increase or decrease air pressure, use
the following procedure.
NOTE: When adjusting air pres-
sure, all weight must be removed
from the suspension, and the
shock absorbers must be fully
extended.
1. Remove the air valve cap from the
shock.
2. Thread the valve of Shock Absorber
Air Pump onto the shock air valve
approximately six rotations.
NOTE: As the pump is being
attached to the shock, the hose will
fill with air. This will result in a
lower gauge pressure of 0.14-0.35
kg/cm
2
(2-5 psi).
3. To decrease air pressure in the
shock, press the black bleed valve
button half way down and hold until
desired pressure is attained.
Threaded
Shock Body
B
A
Initial Setting Chart
Model
Front
Shock
(Ski)
Front
Arm
Shock
Rear
Arm
Shock
129” Models
75 psi
N/A
N/A
Long Track
Models
100 psi
N/A
130 psi
M-TX, X-TX
LE Models
90 psi
(Main
Chamber)
150 psi
(Evol
Chamber)
50 psi
(Main
Chamber)
125 psi
(Evol
Chamber)
150 psi
(Main
Chamber)
250 psi
(Evol
Chamber)
R-TX LE
(SR10RL)
Models
100 psi
(Main
Chamber)
200 psi
(Evol
Chamber)
N/A
N/A
U8JRS2E0.book Page 36 Thursday, May 7, 2015 2:25 PM
