22
Remove the torx-head screw from the
underside of the seat; then lift on the back
of the seat and move it up and rearward
to remove it.
746-088A
To install the seat, use the following pro-
cedure:
Slide the front of the seat into the locking
position of the seat support bracket; then
lower the rear of the seat into position on
the tunnel. Secure with the torx-head
screw.
NOTE: On the 1100 cc LXR models
prior to lowering and securing the
seat, connect the seat heater har-
ness connector.
Towing
If the snowmobile is to be towed by
another snowmobile, do not tow using
the loops in the skis. The tow rope should
be attached to the spindles.
Arctic Power Valve
(APV) System (800 cc
Models)
This RPM controlled servomotor (servo)
actuated system adjusts the size of the
exhaust ports to provide peak perfor-
mance throughout the RPM range.
The system consists of an exhaust valve
assembly mounted to the exhaust side of
each cylinder and connected by adjust-
able cables to an electronic servo
mounted beneath the hood.
NOTE: The mounting location of the
servo will vary from model to model.
739-152F
At low RPM, the exhaust valves are held
in the DOWN position by return springs.
This gives the engine a “low port”
exhaust design calibrated to provide
maximum low RPM power and improve
fuel economy at trail speeds.
739-152G
At high RPM, the exhaust valves are
raised. This creates a “high port” exhaust
design calibrated to provide maximum
performance at high RPM.
739-152H
NOTE: The RPM ranges will vary
from model to model.
CAUTION
On the 1100 cc LXR models prior to
removing the seat, lift the rear of the
seat and disconnect the seat heater
harness connector.
CAUTION
The recommended engine oil to use
is either Arctic Cat APV Synthetic 2-
Cycle Oil or Formula SS Semi-Syn-
thetic Oil (see Gasoline-Oil - Recom-
mended Injection Oil sub-section in
this section). Any substitute may
cause an APV malfunction.
Summary of Contents for F 1100 series
Page 7: ...3 Snowmobile Safety Rules...
