Arctic Cat 660 cc - Troubleshooting Drive Clutch;Driven Pulley

8-71
8
Troubleshooting
Drive Clutch/
Driven Pulley
Problem: Midrange Shift-Up (Too Quickly - Lowers RPM)
Condition Remedy
1. Drive clutch spring weak
2. Driven pulley spring weak
3. Driven pulley spring preload tension
inadequate
4. Center-to-center distance too close
5. Driven pulley bearing worn — damaged
1. Replace drive clutch spring
2. Replace driven pulley spring
3. Increase spring preload tension
4. Adjust center-to-center distance
5. Replace bearing — movable sheave
Problem: Midrange Shift-Up (Too Slowly - Raises RPM)
Condition Remedy
1. Drive clutch components dirty
2. Driven pulley components dirty
3. Driven pulley spring preload tension
excessive
4. Driven pulley bearing worn — dirty
1. Clean drive clutch components
2. Clean driven pulley components
3. Decrease spring preload tension
4. Clean — replace bearing — movable sheave
Problem: Excessive Belt Deposits
Condition Remedy
1. Offset adjusted incorrectly
2. Drive clutch/driven pulley sheaves rough —
damaged — dirty
3. Driven pulley movable sheave travel impaired
4. Driven pulley bearing worn — dirty
1. Adjust offset
2. Repair — replace — clean drive clutch/driven
pulley
3. Service driven pulley
4. Clean — replace bearing — movable sheave
Problem: Excessive Belt Drag—Impaired Drive Clutch Disengagement
Condition Remedy
1. Drive clutch components dirty — damaged
2. Drive belt does not meet measurement
specifications
1. Clean — replace drive clutch components
2. Replace drive belt
Problem: Engine RPM Suddenly Increases—Drive Clutch Vibrates
Condition Remedy
1. Cam arm pin bent — damaged
2. Cam arm damaged — broken
3. Drive clutch out of balance
1. Replace pin
2. Replace cam arm
3. Align — replace components — drive clutch
Problem: Driven Pulley Vibrates
Condition Remedy
1. Sheave rivets loose — broken
2. Driven pulley out of balance
1. Replace sheave
2. Service — replace driven pulley