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The following troubleshooting tables cover common problems that may occur with this machine. If you
need replacement parts or additional troubleshooting help, contact our Technical Support.
Note: Before contacting Tech Support, find the machine serial number and manufacture date, and if
available, your original purchase receipt. This information is required to properly assist you.
Motor.and.Electrical
PROBLEM
Machine does not
1. Switch disabling key removed.
start, or power
2. Incorrect power supply voltage or circuit
supply breaker
size.
trips immediately
3. Power supply circuit breaker tripped or fuse
after startup.
blown.
4. Motor wires connected incorrectly.
5. Centrifugal switch adjustment/contact
points at fault.
6. Wiring broken, disconnected, or corroded.
7. ON/OFF switch at fault.
8. Motor or motor bearings at fault.
Machine stalls or
1. Dull blade.
is underpowered.
2. Workpiece material not suitable for machine.
3. Feed rate/cutting speed too fast.
4. Workpiece crooked; fence loose or
misadjusted.
5. Machine undersized for task.
6. Blade slipping on wheels or not properly
tensioned.
7. Belt slipping/pulleys misaligned.
8. Motor wired incorrectly.
9. Pulley slipping on shaft.
10. Motor overheated.
11. Run capacitor at fault.
12. Extension cord too long.
13. Centrifugal switch/contact points at fault.
14. Motor or motor bearings at fault.
Machine has
1. Motor or component loose.
vibration or noisy
operation.
2. Blade weld at fault/teeth broken.
3. Belt worn, loose, or pulleys misaligned.
4. Pulley loose.
5. Incorrectly mounted to workbench.
6. Motor mount loose/broken.
7. Motor fan rubbing on fan cover.
8. Centrifugal switch.
9. Motor bearings at fault.
Troubleshooting
POSSIBLE.CAUSE
-48-
Model W1878 (For Machines Mfd. Since 4/21)
CORRECTIVE.ACTION
1. Install switch disabling key.
2. Ensure correct power supply voltage and circuit
size (Page.11).
3. Ensure circuit is free of shorts. Reset circuit
breaker or replace fuse.
4. Correct motor wiring connections (Page.52).
5. Adjust centrifugal switch/clean contact points.
Replace either if at fault.
6. Fix broken wires or disconnected/corroded
connections.
7. Replace switch.
8. Replace motor.
1. Sharpen/replace blade (Page.35).
2. Only cut wood/ensure moisture is below 20%.
3. Decrease feed rate/cutting speed.
4. Straighten or replace workpiece/adjust fence.
5. Use correct blade/reduce feed rate or depth of
cut.
6. Adjust blade tracking and tension (Page.24).
7. Clean/tension/replace belt (Pages 42–43); ensure
pulleys are aligned.
8. Wire motor correctly (Page.52).
9. Tighten/replace loose pulley/shaft.
10. Clean motor, let cool, and reduce workload.
11. Test/repair/replace.
12. Move machine closer to power supply; use shorter
extension cord.
13. Adjust centrifugal switch/clean contact points.
Replace either if at fault.
14. Replace motor.
1. Replace damaged or missing bolts/nuts; tighten if
loose.
2. Replace blade (Page.35).
3. Inspect/replace belt (Page.43); realign pulleys if
necessary.
4. Secure pulley on shaft.
5. Adjust feet, shim, or tighten mounting hardware.
6. Tighten/replace.
7. Fix/replace fan cover; replace loose/damaged fan.
8. Replace.
9. Test by rotating shaft; rotational grinding/loose
shaft requires bearing replacement.
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