Section 7: Service; Troubleshooting - Grizzly Extreme Series Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the
serial number and manufacture date of your machine before calling.
Motor & Electrical
Symptom Possible Cause
Machine does not 1. Incorrect power supply voltage.
start or a breaker 2. Power supply circuit breaker tripped or
trips immediately fuse blown.
upon startup. 3. Motor wires connected incorrectly.
4. Wiring open/has high resistance.
5. ON/OFF switch at fault.
6. Start capacitor at fault.
7. Centrifugal switch at fault.
8. Motor at fault.
Machine stalls or is 1. Dull or incorrect blade for task.
underpowered.
2. Workpiece material not suitable for
machine, or feed rate/pressure too heavy.
3. Belt slipping; oil/grease on belt.
4. Blade slipping on wheels.
5. Motor wired incorrectly.
6. Run capacitor at fault.
7. Pulley/sprocket slipping on shaft.
8. Centrifugal switch at fault.
9. Motor bearings at fault.
Machine has 1. Motor or component loose.
vibration or noisy
operation.
2. Large blade weld or blade at fault.
3. V-belt worn or loose.
4. Motor fan rubbing on fan cover.
5. Motor mount loose/broken.
6. Pulley loose.
7. Machine incorrectly mounted.
8. Centrifugal switch at fault.
9. Motor bearings at fault.
G0555X (Mfd. Since 9/17)

Troubleshooting

Possible Solution
1. Ensure correct power supply voltage.
2. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
3. Correct motor wiring connections (Page 53).
4. Check/fix broken, disconnected, or corroded wires.
5. Replace switch.
6. Test/replace.
7. Adjust/replace centrifugal switch if available.
8. Test/repair/replace.
1. Sharpen/replace blade (Page 36). Use correct
blade.
2. Only cut wood—ensure moisture is below 20%,
reduce feed rate or depth of cut.
3. Clean/tension/replace belt (Page 36).
4. Adjust blade tracking and tension (Page 20).
Ensure proper blade size.
5. Wire motor correctly (Page 53).
6. Test/repair/replace.
7. Tighten/replace loose pulley/shaft.
8. Adjust/replace centrifugal switch if available.
9. Test/repair/replace.
1. Inspect/replace damaged bolts/nuts and retighten
use thread-locking fluid if necessary.
2. Replace warped/bent/broken blade; replace/
resharpen dull blade (Page 36).
3. Inspect/replace belt (Page 46).
4. Fix/replace fan cover; replace loose/damaged fan.
5. Tighten/replace.
6. Re-align/replace shaft, pulley set screw, and key.
7. Tighten mounting bolts; relocate/shim machine.
8. Replace.
9. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
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