57
DRIVE CLUTCH AND DRIVEN
CLUTCH
— Keeping the drive clutch
and driven clutch clean should be the pri-
mary consideration of the operator. The
drive clutch and driven clutch can be
cleaned of any drive belt accumulation
using compressed air. The sheaves can be
cleaned using a clean cloth and parts-
cleaning solvent.
DRIVE CLUTCH/DRIVEN CLUTCH
OFFSET
— If premature drive belt wear
is experienced or if the drive belt turns
over, offset must be checked. Also, offset
must be checked whenever either the
drive clutch or driven clutch is serviced.
NOTE: For checking offset, it is
necessary to use Clutch Alignment
Bar (p/n 0644-496). This special tool
can be purchased from an autho-
rized Arctic Cat snowmobile dealer.
To check offset, use the following proce-
dure.
1. Open the left-side access panel; then
remove the belt guard.
2. Install the clutch alignment bar
between the drive clutch sheaves.
3. Allow the bar to rest on the drive
clutch shaft and against the outside
edge of the driven clutch stationary
sheave.
NOTE: The alignment bar must
extend beyond the front edge of the
drive clutch.
4. With the bar against the outside edge
of the driven clutch stationary
sheave at points A and B, the bar
should just clear the inside edge of
the stationary sheave of the drive
clutch and rest on the stationary
shaft at point C with a maximum
0.060 in. clearance at point C. At
this point, measurement between
points A and C should be 1.507 in.
(with a maximum 0.060 in. clear-
ance). If the bar either will not clear
the inside edge or is more than the
specified amount, the offset must be
corrected.
0745-177
NOTE: If the offset is out of speci-
fication, take the snowmobile to an
authorized Arctic Cat Snowmobile
dealer for drive system evaluation
and/or servicing. This service is at
the discretion and expense of the
snowmobile owner.
DRIVE CLUTCH/DRIVEN CLUTCH
PARALLELISM
— If premature drive
belt wear is experienced or if the drive
belt turns over, parallelism must be
checked. Also, parallelism must be
checked whenever either the drive clutch
or driven clutch is serviced.
NOTE: For checking parallelism, it
is necessary to use Clutch Align-
ment Bar (p/n 0644-509). This special
tool can be purchased from an
authorized Arctic Cat Snowmobile
dealer.
To check parallelism, use the following
procedure.
1. Remove the drive belt; then open the
driven sheaves and place clutch
alignment bar between the sheaves.
Release the sheaves.
2. Check the parallelism of the drive
clutch/driven clutch using the paral-
lelism bar and reference points X
and Y with the parallelism bar
between the driven sheaves. Using a
caliper or a machinist’s scale, mea-
sure X and Y from the back side of
the parallelism bar to the back side
of the drive clutch sheave. Measure-
ment Y must be 0.060 in. ± 0.020 in.
more than measurement X, but Y
must not exceed measurement X by
more than 0.100 in.
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