Troubleshooting
Problem:
Grinder bit has become stuck onto the motor shaft
Solution 1:
Loosen set screws and push the bit as far down the shaft as possible. Most often the
shaft
above
where the bit was mounted crusts with glass debris, coolant, hard water residue, etc.
Using a small piece of fine steel wool or scrubby, polish the end of the shaft all the way down to
where the bit rests.
Solution 2:
If you can push the bit down as above, but you notice that there is a burr or scar on the
round side of the motor shaft caused by the set screw in the wrong position (it appears as a small
ring cut into the shaft), you will need to polish it out. This can often be done by using the same steel
wool mentioned above, but occasionally it requires stronger abrasives. Be very careful here! You
only want to remove the scar, you do not want to make the shaft smaller. It may be necessary to
use very fine grit emery cloth or sandpaper here. But again, be very careful, the motor shaft can
be easily damaged. Once the scar is polished out, remove the bit. Clean both the bit and shaft and
use lubricant. Never tighten the bit to the round side of the motor shaft.
Solution 3:
If the bit is still stuck, use a plumbers helper or vice grip to remove the bit. If further
assistance is necessary, call Diamond Tech toll free at
(800) 937-9593
for tech support or to obtain
a Return Authorization Number and further instructions to send your machine in for repair.
Additional Parts and Accessories
ITEM
ITEM NUMBER
WORK SURFACE GRID
289
UNIVERSAL FACE SHIELD
DM0750
EASY-ON
™
FOOT SWITCH
FS0420
MAX SPLASH GUARD
P203
GRINDER MOTOR 110V/220V
P216/P216A
GRINDER CAPACITOR 110V/220V
P221/P221A
SUPER SPONGE REPLACEMENTS
66SUPER
1/4" FAST BIT
GH0230
1/4" STANDARD BIT
GH0600
3/4" FAST BIT
GH0360
3/4" STANDARD BIT
GH0350
1" FAST BIT
GH0290
1" STANDARD BIT
GH0410
ANGLED BIT
GH0300
REDUCING BIT
GH0310
1" WORK SURFACE ADAPTOR
P404
3/4" WORK SURFACE ADAPTOR
P224
EASY-GLIDE
™
WORK SURFACE
P402
RUBBER DRAIN STOPPER
P228
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