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15. Troubleshooting
Trouble Problem Remedy
Spring has improper tension. Adjust spring tension. See “Adjusting
the spindle retaining spring”.
Dirt, grease or oil on the tapered sur-
face of the spindle or of the chuck.
Use household detergent to clean the
surfaces of spindle and chuck. See
“Installing the chuck”.
Incorrect belt tension Adjust belt tension. See “Choosing
speed and tensioning belt”.
Test spindle.
Check tightness of retaining nut on
Wood splinters on underside of
the drill.
No suitable material beneath workpiece. Use suitable material. See “Positioning
table and workpiece”.
Workpiece torn loose from hand. Workpiece not supported or clamped
Support workpiece or clamp it.
Drill bit burns. Incorrect speed. Change speed. See “Choosing speed
and tensioning belt”.
Chips not coming out of hole.
chips.
Dull drill bit. Resharpen drill bit.
Feed too slow. Increase feed rate.
round.
Hard grain in wood or lengths of cutting
lips and/or angle not equal.
Resharpen drill bit.
Bent drill bit. Replace drill bit.
Drill bit binds in workpiece. -
sive feed pressure.
Support workpiece or clamp it. See
“Positioning table and workpiece”.
Improper belt tension. Adjust belt tension. See “Choosing
speed and tensioning belt”.
wobble.
Bent drill bit Use a straight drill bit.
Worn spindle bearings. Replace bearings.
Check the centring of the drill. See
“Installing drill bits”.
the chuck”.
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