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! WARNING
Track tension must be properly main-
tained. Personal injury could result if
a track is allowed to become exces-
sively loose.
Checking Track Tension
! WARNING
DO NOT attempt to check or adjust
track tension with engine running.
Turn ignition key to the OFF position.
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. Elevate the snowmobile on a
shielded safety stand high enough to
use a spring scale.
3. At the mid-point of the track (on the
bottom side), hook a spring scale
around a track clip; then pull down
on the scale to the recommended
pressure (see chart). Measure the
deflection (distance) between the
bottom of the wear strip and the
inside surface of the track clip.
Compare the measurement with the
chart.
Setup
Track
Tension
129"/141"/153"/162"
2 in.
@ 20 lb
137" @ 25 lb
2 in.
NOTE: Measurement is from the
bottom of the wear strip at the point
of the shock pad on the slide rail.
NOTE: Only tighten track until the
track does not ratchet. Too tight of a
track will cause the rear suspension
to not work properly.
Adjusting Track Tension
NOTE: To ensure proper track ten-
sion adjustment, perform all adjust-
ments
on
snowmobile.
1. Loosen the idler wheel axle cap
screws.
2. If the deflection (distance between
the bottom of the wear strip and the
inside surface of the track clip)
exceeds specifications, tighten the
adjusting bolts to take up excessive
slack in the track.
3. If the distance between the bottom of
the wear strip and the inside surface
of the track clip is less than specified,
loosen the adjusting bolts to increase
After Break-
the slack in the track.
In Tension
2 in.
2 in.
Always maintain track tension within
recommended specification.
4. Check track alignment.
5. After
obtained, tighten the idler wheel
axle cap screws to 34 ft-lb; then
tighten the adjusting bolts securely
against the axle.
NOTE: Since track tension and
track
alignment
always check both even if only one
746-788A
adjustment seems necessary.
both
sides
of
the
0745-811
CAUTION
proper
track
tension
are
interrelated,
is
45
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