Section 7: Service; Troubleshooting - Grizzly G0889 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. Switch disabling key removed.
start or a breaker
2. Onboard circuit breaker has tripped.
trips.
3. Power supply incorrect or circuit breaker
tripped or fuse blown.
4. Wires connected incorrectly at switch.
5. Wiring open/has high resistance.
6. ON/OFF switch at fault.
7. Carbon brushes are at fault.
8. Motor at fault.
Machine stalls or is 1. Taking too deep of cut; feed rate too high.
underpowered.
2. Workpiece material not suitable.
3. Motor overheated. Circuit breaker tripped.
4. Belts slipping; improper belt tension or oil/
grease on belts.
5. Dull knives/inserts.
6. Dust collection problem causing internal
components to clog up with shavings.
7. Pulley/sprocket slipping on shaft.
8. Motor bearings at fault.
Machine has 1. Motor or component loose; planer not
vibration or noisy
resting evenly on stand/workbench.
operation.
2. V-belt(s) worn, loose, or slapping cover.
3. Pulley loose.
4. Motor fan rubbing on fan cover.
5. Knives/gibs at fault.
6. Motor bearings at fault.
7. Cutterhead bearings at fault.
Model G0889/G0889Z (Mfd. Since 12/18)

Troubleshooting

Possible Solution
1. Install disabling key.
2. Reset; contact Tech Support if breaker frequently
trips.
3. Ensure power supply circuit is sized correctly and
free of shorts. Reset circuit breaker or replace fuse.
4. Correct switch wiring connections.
5. Check/fix broken, disconnected, or corroded wires.
6. Test/replace.
7. Replace carbon brushes.
8. Test/repair/replace.
1. Reduce depth of cut/feed rate.
2. Only cut wood/ensure moisture is below 20%.
3. Allow motor to cool, reset circuit breaker if
necessary, and reduce depth of cut/feed rate.
4. Clean/tension/replace belts (Page 36).
5. Sharpen/replace knives (Page 27); or replace
inserts (Page 29).
6. Clear blockages in dust chute/ducting. Ensure dust
collector is operating efficiently.
7. Tighten loose pulley; replace pulley/shaft if
damaged.
8. Test/repair/replace.
1. Inspect/tighten loose bolts/nuts; replace damaged
components; shim under planer.
2. Tension belts/replace with a matched set (Page 36).
3. Re-align/replace shaft, pulley set screw, and key.
4. Fix/replace fan cover; replace loose/damaged fan.
5. Resharpen/replace knives; set knife alignment
correctly (Page 27).
6. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
7. Replace bearing(s).
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