Section 7: Service; Troubleshooting - Grizzly G0490ZX 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 1. POWER switch in OFF position.
not start, or
2. POWER switch disabling key removed.
power supply
3. Incorrect power supply voltage or circuit size.
breaker
4. Power supply circuit breaker tripped or fuse
immediately
blown.
trips after
5. Motor wires connected incorrectly.
startup.
6. Thermal overload relay has tripped/at fault.
7. Start capacitor at fault.
8. Centrifugal switch adjustment/contact points
at fault.
9. Contactor not energized/at fault.
10. Wiring broken, disconnected, or corroded.
11. ON/OFF button(s) at fault.
12. Motor or motor bearings at fault.
Machine 1. Workpiece material unsuitable for machine.
stalls or is
underpowered.
2. Feed rate/cutting speed too fast.
3. Workpiece crooked; fence loose or
misadjusted.
4. Machine undersized for task.
5. Belt slipping/pulleys misaligned.
6. Motor wires connected incorrectly.
7. Pulley/sprocket slipping on shaft.
8. Motor overheated.
9. Run capacitor at fault.
10. Extension cord too long.
11. Contactor not energized/at fault.
12. Centrifugal switch/contact points at fault.
13. Motor or motor bearings at fault.
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Troubleshooting

Possible Solution
1. Move POWER switch to ON position.
2. Install POWER switch disabling key.
3. Ensure correct power supply voltage and circuit size.
4. Ensure circuit is free of shorts. Reset circuit breaker or
5. Correct motor wiring connections (Page 51).
6. Reset. Adjust or replace if at fault.
7. Test/replace if at fault.
8. Adjust centrifugal switch/clean contact points. Replace
9. Test all legs for power; replace if necessary.
10. Fix broken wires or disconnected/corroded
11. Replace button(s).
12. Replace motor.
1. Only cut wood/ensure moisture is below 20%
2. Decrease feed rate/cutting speed.
3. Straighten or replace workpiece/adjust fence
4. Use sharp inserts; reduce feed rate/depth of cut
5. Clean/tension/replace belt (Page 41); ensure pulleys
6. Correct motor wiring connections.
7. Tighten/replace loose pulley/shaft.
8. Clean motor, let cool, and reduce workload.
9. Test/repair/replace.
10. Move machine closer to power supply; use shorter
11. Test all legs for power; repair/replace if at fault.
12. Adjust centrifugal switch/clean contact points. Replace
13. Replace motor.
replace fuse.
either if at fault.
connections.
(Page 25).
(Page 50).
(Page 26).
are aligned (Page 41).
extension cord (Page 12).
either if at fault.
Model G0490ZX (Mfd. Since 05/23)