Toro 74939 Operator's Manual page 65

Problem
The clutch will not engage.
Possible Cause
1. A fuse is blown.
2. There is low voltage supply at the
clutch.
3. The coil is damaged.
4. There is inadequate current supply.
5. The rotor/armature airgap is too large.
65
Corrective Action
1. Replace the fuse. Check the coil
resistance, battery charge, charging
system, and wiring connections and
replace if necessary.
2. Check the coil resistance, battery
charge, charging system, and wiring
connections and replace if necessary.
3. Replace the clutch.
4. Repair or replace the clutch lead wire or
electrical system. Clean the connector
contacts.
5. Remove the shim or replace the clutch.