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TOPREVENT I NJURY TOYOURSELF o r damage tothe mortiser, turntheswitchtothe OFFposition andunplug the
power cordfromthe electrical receptacle b efore making anyadjustments.
PROBLEM
SOLUTION
Motor does not
start or does not
come up to full
speed
Motor stalls or
circuit breakers
open frequently
Motor running
too hot
Drill bit stalls
or slips
Drill bit or material
smokes or burns
Excessive drill bit
runout or wobble
LIKELY CAUSE(S)
1. Switch key is removed.
2. Defective switch
3. Defective capacitor
4. Low line voltage
5. Defective motor
1. Circuit overload
2. Low line voltage
3. Motor overload
4. Incorrect fuses on circuit breakers
5. Short circuit in motor; loose
connections or worn insulation on
lead wires.
1. Restricted air circulation due to dust
accumulation.
2. Motor overload
1. Drill bit is not securely tightened in
chuck.
1. Incorrect spindle speed.
2. Chips not exiting out of drill hole.
3. Dull drill bit.
1. Bent drill bit.
2. Drill bit not properly installed in chuck.
1. Insert switch key.
2. Have switch replaced.
3. Have capacitor replaced.
4. Correct low line voltage condition.
If machine is
plugged into an extension cord, disconnect and plug
directly into wall outlet.
5. Have motor replaced.
NOTE: 3 and 4 must be done by a qualified service
technician; Consult Sears service.
1,
2.
3,
4.
5,
Reduce circuit load (turn off other appliances).
Correct low line voltage condition.
Check line voltage
with a multi-meter.
If mortiser is plugged into an
extension cord, unplug mortiser from extension cord
and plug mortiser directly to wall outlet.
Reduce load on motor, slow down feed rate.
Have correct fuses on circuit breakers installed by a
qualified electrician.
Inspect terminals in motor for damaged insulation and
shorted wires and have them replaced.
Check all
power lead connections.
1. Clean dust and restore normal air circulation around
motor.
2. Reduce load on motor, slow down feed rate.
1. Install drill bit properly. See ASSEMBLING
CHISEL AND
BIT in ASSEMBLY INSTRUCTIONS.
1. Reduce spindle speed.
See speed diagram on the
under side of the belt cover.
2. Retract drill bit frequently during drilling operation to
clear chips from hole.
3. Replace or sharpen drill bit.
1. Replace with a straight or new drill bit.
2. Install drill bit properly. See ASSEMBLING
CHISEL
AND BIT in ASSEMBLY INSTRUCTIONS.
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