Arctic Cat 660 cc, Service Manual

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8-6
FC260
FC261
4. Remove the lock nuts from the three cam arm
pins.
5. Using a small torch, apply heat to the cam arm set
screws to loosen the Loctite used in assembly.
FS001
„
NOTE: Heat must be applied to the cam arms in
order to remove the set screws.
6. After the lock nuts and set screws have been
removed, remove the cam arm pins one at a time
noting the position of the alignment notches for
assembling purposes. Account for the O-rings.
0739-038
7. Change the cam arms with existing pins making
sure the head of each pin is positioned toward the
direction of drive clutch rotation.
„
NOTE: The drive clutch rotates counterclock-
wise.
8. With the cam arm pin alignment notch properly
positioned to the cam arm set screw, install the
new cam arm set screws (pre-coated with Loctite)
and tighten securely.
9. Secure the cam arm pins with new lock nuts and
tighten to 0.35 kg-m (2.5 ft-lb) or 0.035 kg-m (25
in.-lb).
REMOVING (9-Post Style)
1. Open the belt guard; then remove the drive belt
and the plug from the belly pan.
2. Remove the bolt and lock washer securing the
drive clutch to the crankshaft.
AN380D
„ NOTE: Before installing the clutch puller, apply
oil to the threads of the puller and a small amount
of grease to the tip of the puller.
! CAUTION
When installing cam arms, always use new lock
nuts and cam arm set screws.