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11
7.0 Operation
Always use approved safety
glasses or face shield. Failure to comply may
cause serious injury.
A bench grinder is designed for hand-grinding
operations such as sharpening chisels,
screwdrivers, drill bits, removing excess metal, and
smoothing and polishing metal surfaces.
A Medium Grain Abrasive Wheel is suitable for
rough grinding where a considerable amount of
metal must be removed or when obtaining a smooth
finish is not important. A Fine Grain Abrasive Wheel
should be used for sharpening tools or grinding to
close size tolerances because it removes metal
more gradually for precision grinding and gives work
a smooth finish.
Wire brushing provides a fast way to remove rust
scale, burrs, and point from metal. Use coarse wire
brushes for hard cleaning jobs. Use fine wire
brushes for polishing and finish work. When brush
tips become dull, reverse the brush on the grinder.
7.1 On/Off Switch
When grinder is turned off, the
wheel may take a few moments to completely
stop.
Press rocker or toggle switch to start and stop
grinder.
Note: After extended operation, the grinder housing
may be warm to the touch. This is not abnormal.
7.2 Precautions
7.2.1 Wheel grinding
1. Before starting grinder, turn wheels by hand to
verify they are clear of obstructions and turn
freely. The tool rests and spark guards should
not touch the wheel.
2. Keep tool rest and spark guard to within 1/16"
of grinding wheel.
3. Turn on grinder and allow it to reach full running
speed before starting to grind.
4. Adjust the eye shields as needed.
5. Keep a steady, moderate pressure on the
workpiece and keep it moving at an even pace
for smooth grinding. Pressing too hard
overheats the motor and prematurely wears the
grinding wheel. Note the original bevel angle on
the item to be sharpened and try to maintain the
same shape. The grinding wheel should rotate
into the object being sharpened.
6. If grinding a narrow workpiece, slide it laterally
across width of wheel. Using full width of wheel
will help prevent a groove from forming at one
place on the wheel.
7. Keep a tray filled with water and dip your work
into it regularly to prevent overheating.
Overheating can weaken metals. Do not apply
water directly to a grinding wheel.
8. Do not use the side of the grinding wheel; this
puts dangerous stress on the wheel.
9. When wheel becomes loaded or dull, use an
approved grinding wheel dresser and dress the
wheel face.
8.0 Adjustments
8.1 Eye Shield Tilt Adjustment
1. Loosen lock knob (A
1
, Figure 8-1).
2. Adjust eye shield (A
2
) to desired tilt angle.
3. Tighten lock knob (A
1
).
Figure 8-1: eye shield adjustment
8.2 Spark Guard
As the wheel wears down, the spark guard must be
re-adjusted to maintain a maximum 1/16" distance.
Refer to Figure 8-1.
1. Loosen two hex cap screws (B
1
).
2. Slide spark guard (B
2
) to 1/16" distance from
grinding wheel surface.
3. Tighten screws (B
1
).
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