45
2. At the lower mounting position of the rear shock,
hook a spring scale around a track clip; then pull
down on the scale to 9 kg (20 lb). Measure the
deflection (distance) between the bottom of the wear
strip and the running surface of the track clip. The
measurement should be 50 mm (2 in.).
SNO-950
Adjusting Track Tension
1. Loosen the idler wheel cap screws.
2. Loosen the rear idler wheel adjusting bolt jam nuts.
SNO-949
NOTE: To ensure proper track tension adjustment,
perform all adjustments on both sides of the snowmo-
bile.
3. If the deflection (distance between the bottom of the
wear strip and the inside of the track) exceeds speci-
fications, tighten the adjusting bolts to take up exces-
sive slack in the track.
4. If the distance between the bottom of the wear strip
and the inside surface of the track is less than speci-
fied, loosen the adjusting bolts to increase the slack
in the track.
5. Check track alignment.
6. When proper track tension is obtained, tighten the
adjusting bolt jam nuts against the axle housings.
7. Tighten idler wheel cap screws to 34 ft-lb.
NOTE: Since track tension and track alignment are
interrelated, always check both even if only one
adjustment seems necessary.
TRACK ALIGNMENT
Proper track alignment is obtained when the outside of
the rear idler wheels are equal distance from the edge of
the track. Excessive wear to the idler wheels, drive lugs,
and track will occur if the track is improperly aligned.
Arctic Cat recommends that the track alignment be
checked once a week or whenever the track tension is
adjusted.
Checking Track Alignment
1. Position the tips of the skis against a wall; then using
a shielded safety stand, raise the rear of the snowmo-
bile off the floor making sure the track is free to
rotate.
2. Start the engine and accelerate slightly. Use only
enough throttle to turn the track several revolutions.
SHUT ENGINE OFF.
NOTE: Allow the track to coast to a stop. DO NOT
apply the brake because it could produce an inaccu-
rate alignment condition.
3. When the track stops rotating, check the relationship
of the idler wheels and the edge of the track. If the
distance from the rear idler wheels to the edge of the
track is the same on both sides, no adjustment is nec-
essary.
4. If the distances from the idler wheels to the edge of
the track are not the same on both sides, an adjust-
ment is necessary.
Adjusting Track Alignment
1. On the side of the track which has the edge of the
track furthest to the outside of the rear idler wheel,
loosen the idler wheel cap screw and the adjusting
bolt jam nut; then rotate the adjusting bolt clockwise
1 to 1 1/2 turns.
! WARNING
If jam nuts are not tightened properly, the adjusting
bolts could loosen causing the track to become
extremely loose and, under some operating conditions,
allow the idler wheels to climb over the track lugs forc-
ing the track against the tunnel causing the track to
“lock.” If a track “locks” during operation, severe per-
sonal injury could result.
! WARNING
Make sure the ignition key is in the OFF position and the
track is not rotating before checking or adjusting track
alignment. Personal injury could result if contact is
made with a rotating track.
! WARNING
The tips of the skis must be positioned against a wall or
similar object for safety.
Summary of Contents for 2018 ZR 200
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