Operator’s Manual

7
OPERATION
WARNING
To reduce the risk of injury, always
wear safety goggles or glasses
with side shields. Never grind without proper
safety equipment.
Always hold the tool rmly with both hands using
the handles provided before and during grinding.
Slide Switch Operation
To start the tool, grasp the handle and side handle
rmly and slide the switch to ON.
To stop the tool, release the switch. Make sure the
tool comes to a complete stop before laying down
the tool.
To lock-on the switch, slide the switch to ON and
press down on the front of the switch. To stop the
tool, press and release the switch. Make sure the tool
comes to a complete stop before laying down the tool.
General Operation
1. If you have just installed an accessory or are
beginning a period of work, test the wheel by let-
ting it spin for one minute before applying it to the
workpiece. WARNING! Never use a accessory
that has been dropped. Out-of-balance or dam-
aged accessories can mar workpiece, damage the
tool, and cause stress that may cause accessory
failure.
2. Use a clamp, vise or other practical means to hold
your work, freeing both hands to control the tool.
3. WARNING! Hold tool securely with both hands.
Start the tool.
NOTE: If the battery is inserted when the tool is
ON, the tool will not run. Turn the tool OFF, then
back ON to begin work.
4. Allow accessory to come to full speed before
beginning work.
5. Control pressure and surface contact between ac-
cessory and workpiece. WARNING! Never bang
accessory onto work. Too much pressure causes
accessory failure or slows speed.
6. When nished, turn off the tool and make sure it
comes to a complete stop before laying it down.
Using Grinding Wheels
WARNING
The guard type must match the
wheel type to provide maximum
protection for the operator if the wheel should
break.
When grinding, hold tool at a 5
o
to 15
o
angle, using
constant pressure for a uniform nish. Too great an
angle causes concentrated pressure on small areas
which may gouge or burn work surface.
For best result use
only this portion of disc
Hold at a
5° to 15° angle
Using Cut-Off Wheels
Cut-Off Wheels are suited for small cut-off and shal-
low notching operations only.
WARNING
The guard type must match the
wheel type to provide maximum
protection for the operator if the wheel should
break.
When using a cut-off wheel, hold the tool as shown,
using only the edge of the wheel. WARNING! Using
the face of a Cut-Off Wheel (as in grinding) will cause
the Wheel to crack and break, resulting in serious
personal injury.
Using Wire Brushes
Wire brushes are useful for removing rust, scale,
burrs, weld slag, etc.
WARNING
Everyone in the area must wear
protective clothing and safety
goggles or face shields. Fatigued wires and
residue will y off the brush with considerable
force, causing potential for serious injury.
Never exceed Maximum Safe Operating Speed of
brush. Do not use a damaged brush or one that
is functioning improperly (throwing wires, out-
of-balance, etc.). These conditions increase the
possibility of further brush failure and possible
injury. Discard and replace damaged brushes
immediately.
A Type "27" guard must be installed when using
a wire wheel brush to provide maximum protec-
tion for the operator when fatigued wires break.
(See "Removing/Installing/Adjusting the guard".)
Always install wire brushes according to the acces-
sory manufacturer’s instructions. Only use acces-
sories with threads matching
Wire Cup
Brush
Wire Wheel Brush
Guard
the tool spindle.
Test wheel for balance and
loose or damaged wires by
letting it spin for one minute
before applying it to the
workpiece. During this time,
no one should stand in front
of or in line with it.
Control pressure and surface
contact between wheel and
workpiece. Too much pres-
sure causes over-bending of
wires and heat build-up caus-
ing premature wire breaking,
rapid dulling and reduced
brush life. Instead of more
pressure, try a wire wheel
with more aggressive cutting
action (increased wire size, decreased wire length or
different brush type (knot type vs. crimped wire type).