Problem Possible Cause
Solution
Low coil resistance Replace with new Magstop unit
Defective battery Replace
Faulty charging system Repair or replace
Bad wire or connections, PTO switch Repair or replace
Defective battery Replace
Faulty charging system Repair or replace
Bad wire or connectors, PTO switch Repair or replace
Incorrect coil resistance Damaged coil Replace with new Magstop unit
Broken clutch lead wire Repair
Faulty electrical system Repair or replace
Problem Possible Cause
Solution
Armature/brake poles wore out End of usable life Replace with new Magstop unit
Engine oil leak on brake Repair leak
Replace with new Magstop unit
Problem Possible Cause
Solution
Defective battery Replace
Faulty charging system Repair or replace
Bad wire or connectors, PTO switch Repair
Broken clutch lead wire Repair
Faulty electrical system Repair or replace
Clogged deck, bad spindle, etc. Remove excess grass
Replace spindle
Engine oil leak on brake Repair leak
Replace with new Magstop unit
Problem Possible Cause
Solution
Loose mounting (bolt not torqued properly) Replace
Field assembly movement restricted Confirm proper anti rotation
Adapter plate rattles against anti-
rotation pin
Some noise is normal
If excessive, repair or replace anti-
rotation device
Loose mounting (bolt not torqued properly) Tighten mounting bolt to specifications
Mounting bolt too long and bottoms in eng. shaft Use correct length bolt
Notes:
Failed bearing
Clutch Troubleshooting
A. Symptom: Clutch will not engage
B. Symptom: Brake will not engage
Blown fuse
Low voltage supply
Inadequate current supply
Clutch loose on shaft
Contaminated friction surfaces
Low voltage supply (Less than
12V)
Inadequate current supply
Overloaded clutch
C. Symptom: Clutch slip
D. Symptom: Noisy clutch/Vibration
Contaminated friction surfaces
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