Craftsman 137.219100 - Manual (Page 21)

TROUBLESHOOTING GUIDE
A WARNING
To avoid injury from an accidental start, turn the switch OFF and always remove the plug from the power source
before making any adjustments.
® Consult your local Sears Service Center if for any reason the motor will not run.
PROBLEM PROBABLE CAUSE REMEDY
Noisy operation. 1. incorrect belt tension.
2. Dry spindle,
3. Loose spindle pulley.
4. Loose motor pulley.
1. Adjust tension. See Section
“ASSEMBLY - TENSIONING BELT”
2. Lubricate spindle. See Section “LUBRICATION”.
3. Check tightness of retaining nut on pulley, and
tighten if necessary.
4. Tighten set screw in motor pulley.
Drill bit burns. 1. Incorrect speed.
2. Chips not coming out of hole.
3. Dull drill bit.
4. Feeding too slowly.
5. Not lubricated.
1. Change speed. See Section ’’BASIC DRILL
PRESS OPERATION - SPINDLE SPEEDS”
2. Retract drill frequently to clear chips.
3. Resharpen drill bit.
4. Feed fast enough - allow drill to cut.
5. Lubricate drill. See Section “BASIC DRILL
PRESS OPERATION - FEEDING”
Fiun out of drill bit point -
drilled hole not round.
1. Hard grain in wood or
lengths of cutting flutes
and/or angles not equal.
1. Resharpen drill bit correctly.
2. Bent drill bit. 2. Replace drill bit.
Wood splinters on
underside. 1. No backup material
under workpiece.
1. Use backup material. See Section
“BASIC DRILL PRESS OPERATION”.
Workpiece torn
loose from hand.
1. Not supported or
clamped properly.
1. Support workpiece or clamp it. See Section
“BASIC DRILL PRESS OPERATION”.
Drill bit binds in workpiece. 1. Workpiece pinching drill bit,
or excessive feed pressure.
2. Improper belt tension.
1. Support workpiece or clamp it. See Section
“BASIC DRILL PRESS OPERATION”.
2. Adjust tension. See Section
“ASSEMBLY - TENSIONING BELT,”
Excessive drill bit 1. Bent drill bit. 1. Use a straight drill bit.
runout or wobble. 2. Worn bearings.
3. Drill bit not properly
installed in chuck.
2. Replace bearings.
3. Install drill properly. See Section “BASIC DRILL
PRESS OPERATION" and “.ASSEMBLY”.
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4. Chuck not properly installed. 4. Install chuck properly. See Section
“ASSEMBLY -INSTALLING THE CHUCK”.
Quill returns
too slow or too fast.
1. Spring has improper tension. 1. Adjust spring tension. See Section “ASSEMBLY-
ADJUSTMENTS - QUILL RETURN SPRING”. '
Chuck will not stay
attached to spindle.
It falls off when
trying to install.
1. Dirt, grease, or oil on the
tapered inside surface of
chuck or on the spindle’s
tapered surface.
1 ., Using a household detergent, dean the
tapered surface of the chuck and spindle to
remove all dirt, grease and oil. See Section
“ASSEMBLY - INSTALLING THE CHUCK”
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