Drive Train - Arctic Cat ZR4000 Service Manual

0748-987
NOTE: The amount of deflection should be experi-

mented with or tested to obtain best start-line perfor-
mance.
 NOTE: Push down on the belt with the ruler only
until the bottom of the belt flexes upward; then read
the amount of deflection.
5. To correct drive belt deflection, loosen the jam nut
on the belt width adjuster on the stationary sheave.
 NOTE: Make sure the jam nut and set screw is
located on the opposite side of the drive clutch when
checking or adjusting the deflection.
SNO-597A
6. Using an Allen wrench, adjust the set screw as
needed.
 NOTE: Turning the set screw clockwise increases
distance between the sheaves (increases belt deflection
measurement); turning the set screw counterclock-
wise decreases distance
(decreases belt deflection measurement).

Drive Train

REMOVING CHAIN CASE/DRIVEN
SHAFT/DRIVESHAFT/TRACK (4000 RR,
6000, 8000)
1. Remove the left- and right-side panels, hood; then
loosen the quarter turns securing the lower console to
the skid panels and secure out of the way.
2. Remove the drive and driven clutches.
170
between the sheaves
3. Remove the screws securing the PTO engine mount
plate to the engine and the chassis.
4. Remove the expansion chamber and the resonator;
then remove the right-side footrest.
5. Remove the torx-head screw securing the belly pan
to the right-side footrest support.
6. Disconnect the speed sensor connector and the oil
level connector.
7. Place a drain pan under the chain case; then loosen
the eleven screws securing the chain case cover/oil
tank assembly to the chain case housing starting with
the bottom screws first.
8. Remove the chain case cover/oil tank and set out of
the way leaving the oil hose connected.
9. Release tension on the chain tensioner; then remove
the ratchet block and the tensioner.
XM385
10. Remove the retaining ring securing the upper
sprocket to the driven shaft.
XM386
NOTE: Spread the retaining rings only enough to

remove them from the drive and driven shafts.
11. Remove the retaining ring securing the lower
sprocket. Remove the sprockets and chain.