Section 8: Service; Troubleshooting - Grizzly G0899 Owner's Manual

SECTION 8: 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. Switch disabling key removed.
start, or power-
2. Machine circuit breaker tripped.
supply fuse/breaker
3. Power supply circuit breaker tripped or fuse
trips immediately
blown.
after startup.
4. Plug/receptacle at fault/wired incorrectly.
5. Motor wired incorrectly.
6. Wiring broken, disconnected, or corroded.
7. ON/STOP switch or circuit breaker at fault.
8. Start capacitor at fault.
9. Motor at fault.
Machine stalls or is 1. Feed rate/cutting speed too fast.
underpowered.
2. Blade dull or incorrect for type of cut.
3. Workpiece unsuitable for machine.
4. Motor overheated; tripping machine circuit
breaker.
5. Belt slipping.
6. Pulleys slipping on shaft or misaligned.
7. Motor wired incorrectly.
8. Run capacitor at fault.
9. Motor bearings at fault.
10. Contactor not energized/has poor contacts.
11. Centrifugal switch at fault.
12. Motor at fault.
Machine has 1. Motor or component loose.
vibration or noisy
operation.
2. Blade at fault.
3. Belt/pulley(s) worn, loose, or misaligned.
4. Motor mount loose/broken.
5. Arbor pulley loose.
6. Motor fan rubbing on fan cover.
7. Arbor bearings at fault.
8. Motor bearings at fault.
Model G0899 (Mfd. Since 10/20)

Troubleshooting

Possible Solution
1. Install switch disabling key.
2. Reset circuit breaker on switch (Page 78).
3. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
4. Test for good contacts; correct wiring.
5. Correct motor wiring connections (Page 78).
6. Fix broken wires or disconnected/corroded
connections.
7. Replace switch/circuit breaker.
8. Test/replace if at fault.
9. Test/repair/replace.
1. Decrease feed rate/cutting speed.
2. Use correct, sharp blade (Page 31).
3. Only cut wood; replace crooked workpiece/ensure
moisture is below 20%.
4. Clean motor/let cool and reduce workload; Reset
breaker.
5. Tension/replace belt (Page 76).
6. Tighten/replace loose pulley; ensure pulleys are
aligned (Page 76).
7. Wire motor correctly (Page 78).
8. Test/repair/replace.
9. Test/repair/replace.
10. Test all legs for power; replace if faulty.
11. Adjust/replace centrifugal switch if available.
12. Test/repair/replace.
1. Inspect/replace damaged bolts/nuts, and re-tighten
with thread-locking fluid.
2. Replace warped/bent blade; resharpen dull blade.
3. Inspect/replace belt. Realign/replace shaft, pulley,
set screw, and key (Page 76).
4. Tighten/replace.
5. Retighten/replace arbor pulley.
6. Fix/replace fan cover; replace loose/damaged fan.
7. Replace arbor housing bearings; replace arbor.
8. Test by rotating shaft; grinding/loose shaft requires
bearing replacement.
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