Use and Care Manual

-17-
Model W1839 & W1840 (For Machines Mfd. Since 3/16)
SETUP
6. Attach each tool rest assembly to grinder using (4)
M8-1.25 x 12 hex bolts and (4) 8mm flat washers
(see Figure 13).
Figure 13. Tool rest assembly attached to
grinder.
Figure 14. Tool rest gap.
1
⁄16" –
1
⁄8"
The toll rest can be adjusted closer/farther from grinding
wheel or tilted and secured every 15° from 0°—75°.
The tool rest stabilizes the workpiece when grinding.
It must always be positioned correctly when using the
grinder to help prevent the operator's hands from being
pulled into grinding wheel.
Each tool rest features detents that allow it to lock at a
specific angle. To adjust a tool rest, loosen the knob bolt
(see Figure 13) several turns, pivot the tool rest to the
appropriate angle, position it
1
⁄16" away from the grinding
wheel, and then tighten knob bolt to secure setting.
As grinding wheel wears, shift tool rest closer to grinding
wheel to maintain a gap of
1
⁄16" –
1
⁄8" (see Figure 14).
IMPORTANT: If the gap reaches
1
⁄8" and the tool rest
cannot be adjusted any closer to the wheel, the grinding
wheel MUST be replaced before you can resume safely
operating grinder.
Tool Rest Adjustment
x 4
Figure 15. Spark deflector gap.
1
⁄8" –
1
⁄4"
The spark deflector prevents sparks from showering the top
of the workpiece and the operator's hands. As the wheel
wears, adjust the spark deflector closer to the grinding
wheel to maintain a gap of
1
⁄8"–
1
⁄4" (see Figure 15). If
the gap reaches
1
⁄4" and no additional adjustments can be
made, replace the grinding wheel.
Spark Deflector Adjustment
Some grinding wheels must be replaced before spark
deflector or tool rest reach their final adjustment. As
diameter of a grinding wheel is reduced, so is surface
speed. Grinding under these conditions can lead to
faster abrasive loss and poor grinding results. Always
follow wheel manufacturer's directions.
x 4
Knob
Bolt
Never grind WITHOUT tool rest in place and properly
positioned. "Free hand" grinding or too large of a gap
between wheel and tool rest increases risk of pinching,
which may result in wheel breakage or operator injury.