44
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 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.
NOTE: Pressing the button fully
down and releasing it will allow only
a small amount of air to escape
(micro-adjust).
4. To increase air pressure in the shock,
pump until desired pressure is
attained.
5. Remove the pump valve from the
shock air valve.
NOTE: As the pump valve is being
removed from the shock, the sound
of air loss is from the pump hose,
not from the shock.
6. Install the air valve cap onto the
shock.
Adjusting Skid Frame
Front Arm
The skid frame front arm shock spring
tension and the limiter straps are adjust-
able. However, Arctic Cat recommends
that the shock spring be maintained at the
factory preset of 1/8-1/4 in. preload.
Tightening the skid frame front arm shock
spring may cause improper balance and
may ruin the handling features of the
snowmobile.
The length adjustment of the front arm
limiter straps determines the weight dis-
tribution between the front of the skid
frame and the skis. Tightening the limiter
strap (shortening the strap) will pull up
on the front of the skid frame and will
increase ski pressure. Loosening the lim-
iter strap (lengthening the strap) lowers
the front of the skid frame and decreases
ski pressure.
When customizing the amount of ski
pressure, be sure to adjust both straps
equally and do not over-adjust the limiter
straps to adversely affect steering and
operator control of the snowmobile.
Some experimentation may be required
until the proper adjustment for the opera-
tor’s individual style is obtained.
NOTE: If the limiter straps are
adjusted, it is highly recommended that
at least a minimum of 1/8 in. preload on
the shock spring be maintained.
Initial Setting Chart
Model
Front
Shock
(Ski)
Front
Arm
Shock
Rear
Arm
Shock
ZR 129”/137”
Sno Pro
60 psi
N/A
N/A
XF High
Country/
M Sno Pro
95 psi
N/A
130 psi
M LTD
90 psi
(Main
Chamber)
150 psi
(Evol
Chamber)
50 psi
(Main
Cham-
ber) 125
psi (Evol
Chamber)
150 psi
(Main
Chamber)
250 psi
(Evol
Chamber)
ZR RR
100 psi
(Main
Chamber)
200 psi
(Evol
Chamber)
N/A
N/A
! WARNING
Do not adjust the front arm limiter
straps to a point at which steering
and operator control of the snowmo-
bile are adversely affected.
