Harbor Freight Tools 5 INCH BENCH GRIDER 94186 - Manual (Page 10)

Page 10 skU 94186 For technical questions, please call 1-800-444-3353
OPERATING INSTRUCTIONS
WARNING!
The grinding wheel can fly apart and cause injury. Grinding wheels must
always be checked for cracks or imperfections. This is done with the “ring
test”. With the Grinding Wheel mounted, tap the wheel gently near the outer
rim with the handle of a screwdriver. You should hear a clear bell-like ring.
If a dull thud occurs, do not use the wheel. The wheel may be damaged and
could come apart during operation.
1. insert the line Cord (28) into a grounded electrical outlet.
2. To turn on the Bench Grinder, press the switch (27) to the (i) on position. The motor
will start. see photo on page 9.
3. Put on the ansi-approved safety impact glasses and full face shield.
Note: do not use aluminum oxide grinding wheels when grinding nonferrous metals such as
aluminum and brass. Use silicon carbide grinding wheels for nonferrous metals.
4. When the Motor reaches full speed, bring the workpiece into the wheel gently, without
jarring.
The workpiece will quickly become heated, therefore frequent quenching in water
is required. When grinding high speed steels such as drill and tool bits, avoid high
temperature buildup as this can affect the temper of the steel.
For small workpieces such as drill bits or chisels, avoid applying pressure to the
Grinding Wheel at a high angle that could cause the workpiece to become lodged
between the Tool rest and the Grinding Wheel.
5. To turn off the Bench Grinder, press the switch (27) to the (o) oFF position.
INSPECTION, MAINTENANCE, AND CLEANING
WARNING!
Make sure the Power Switch of the Bench Grinder is in its “Off” position
and that the tool is unplugged from its electrical outlet before performing any
inspection, maintenance, or cleaning procedures.
1. Before each use, inspect the general condition of the Bench Grinder Check for
loose screws, misalignment or binding of moving parts, cracked or broken parts,
damaged electrical wiring, and any other condition that may affect its safe operation.
if abnormal noise or vibration occurs, have the problem corrected before further use.
Do not use damaged equipment.
2. Periodically recheck all nuts, bolts, and screws for tightness.
3. store in a clean and dry location.
Note: do not grind with the sides of the grinding wheel.