Section 7: Service; Troubleshooting - Grizzly G0645 Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at (570) 546-9663.
Motor & Electrical
Symptom Possible Cause
Motor will not start; 1. Tripped breaker.
fuses or circuit
2. Short circuit in line cord or plug.
breakers blow.
3. Open circuit in motor or loose connections.
Motor overheats 1. Short circuit in motor or loose connections.
or stalls (resulting
in blown fuses or
2. Air circulation through the motor restricted.
tripped circuit).
3. Incorrect size fuses or circuit breakers.
4. Motor overloaded.
Loud repetitious 1. Motor fan is hitting the cover.
noise coming from
machine.
Mortising Operations
Symptom Possible Cause
Difficult to pull 1. Drill bit does not protrude enough from the
lever down during
end of the chisel.
machine operation.
2. Chisel or drill bit is dull.
3. Mortising operating handle is not positioned
for maximum leverage.
4. Chisel is too big for job.
Mortising bit and 1. Drill bit out of alignment with chisel.
chisel are extremely
2. The chisel mounting bushing is loose or
noisy, chatter, and
damaged causing poor drill bit-to-chisel
smoke. (An average
alignment.
amount of noise and
3. The chisel or drill bit is bent.
chatter are normal
4. Normal condition.
for any mortising
machine.)
Moritising bit and 1. The drill bit is dull.
chisel generate
2. Drilling pressure is too aggressive and over-
smoke and burn the
heats the drill bit.
workpiece.
3. Wood chips load up in the chisel and over-
heat the drill bit.
4. Wood is too green, has high moisture con-
tent, or is pressure treated.
G0645 Benchtop Mortising Machine

Troubleshooting

Possible Solution
1. Repair for cause of tripped breaker and reset.
2. Repair or replace cord or plug for damaged insula-
tion and shorted wires.
3. Inspect all lead connections on motor for loose or
open connections.
1. Replace motor connections with loose/shorted termi-
nals or worn insulation.
2. Clean out motor to provide normal air circulation.
3. Install correct fuses or circuit breakers.
4. Reduce load on motor.
1. Adjust fan cover mounting position, tighten fan, or
shim fan cover.
Possible Solution
1. Adjust the drill bit depth.
2. Sharpen/replace drill bit and chisel.
3. Adjust the handle for maximum length, and position
it so you have the maximum leverage at the most
dificult mortising depth.
4. Use up to / " long chisel (maximum).
1
2
1. Reinstall chisel in a different position.
2. Replace bushing, using care not to over-tighten the
chisel retaining set screw.
3. Replace the chisel and drill bit as a matched set.
4. Some amount of chatter and smoke is normal.
1. Sharpen/replace drill bit and chisel.
2. Adjust drill bit depth, reduce drilling pressure, clear
chips often.
3. Apply small amount of bees wax to drill bit; face
chisel slot sideways; clear chips often.
4. Only mortise dry, untreated wood.
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