Rear Suspension; Track Tension - Arctic Cat 120 sno pro Operator's Manual

REAR SUSPENSION

(Every 20 Operating
Hours)
1. Shut engine off and wait for all
moving parts to stop.
2. With the gas tank nearly empty
(less than 1/4 full), lay the snow-
mobile on its side. A piece of card-
board should be used to protect the
finish on the hood and belly pan.
3. Remove ice and snow buildup
from the skid frame to expose the
two grease fittings.
4. Lubricate the grease fittings with a
low-temperature grease.

TRACK TENSION

NOTE: Track tension and track
alignment are interrelated; there-
fore, always check both, even if
only one adjustment seems neces-
sary.
Track tension is directly related to the
overall performance of the snowmo-
bile. If the track is too loose, it may
slap against the tunnel causing wear, or
it may ratchet on the track drive
sprockets. Arctic Cat recommends that
the track tension be checked once a
month and adjusted accordingly.
! WARNING
Track tension must be properly
maintained. Personal injury could
result if a track is allowed to
become excessively loose.
Checking Track
Tension
! WARNING
DO NOT attempt to check or adjust
track tension with engine running.
Turn ignition key to the OFF posi-
tion. Personal injury could result
from contact with a rotating track.
1. Remove excess ice and snow
buildup from the track, track drive
sprockets, and the inside of the
skid frame.
2. Place the rear of the snowmobile
up on a safety stand high enough
so the track is free of the floor.
3. Without exerting any pressure on
the track, measure the distance
between the bottom of the wear
strip and the inside surface of the
track. The measurement must be
within specifications of 6.4-9.5
mm (1/4-3/8 in.). If the measure-
ment is not within specifications,
an adjustment is necessary.
Adjusting Track
Tension
1. Loosen the idler wheel cap screws.
2. Loosen the rear idler wheel adjust-
ing bolt jam nuts.
740-444A
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