8
9
Installing Backing Pad and Sanding Discs
1.
Unplug tool and place it upside down on
a level surface as shown. Remove any
accessories from spindle.
2. Slip backing pad onto spindle with fl at
side away from gear case. Place sand-
ing disc on backing pad and secure
assembly to spindle with disc nut.
3. To tighten, press the spindle lock button
while turning disc nut clockwise.
4.
To remove backing pad and sanding disc,
unplug tool and reverse procedure.
Sanding
1. Use a clamp, vise or other practical
means to hold your work, freeing both
hands to control your tool. Firmly grasp
body of tool and side handle before
starting and while tool is in operation.
Allow sanding disc to come to full speed
before beginning to sand.
2. Hold Sander/Grinder at 5° to 15° angle
as shown to ensure proper sanding
pressure and control. Too great an
angle will result in too much pressure
and could cause excessive wear to the
disc and workpiece. Too small an angle
will reduce control.
3.
Use long, sweeping, side to side strokes,
advancing forward to produce the de-
sired fi nish.
Fig. 1
Gear Case
Spindle
Backing Pad
Disc Nut
Sanding Disc
Fig. 2
For best result use only this portion of disc
Hold at a 5° to 15° angle
Removing Welds or Hammer Marks
When removing welds or hammer marks, limit
coarse sanding to the immediate area. Use
successively fi ner grits to smooth surface.
Cross Sanding
When finishing a surface that has been
prepared by a coarse disc or wheel, sand
at right angles to the strokes made by the
coarser disc. Finishing marks left from pre-
vious sanding are easily seen and removed
for a uniform fi nish. Failure to cross sand
when changing from a coarse disc to a
fi nishing disc may result in deep scratches
and circular marks.
Finishing Metal
Constantly move across the surface. Work
faster on curved surfaces where contact
areas are smaller and pressure is greater.
Flat areas may appear at the end of the
stroke when pressure is too heavy. Ease up
on pressure at end of each stroke and when
reversing strokes.
Troubleshooting
Deep scratches and circular marks can
result from:
•
Using too coarse a grit
•
Using a partially glazed disc
•
Dirt or loose metal on the workpiece
•
Failure to sand across the grain when
changing from coarse to finishing
discs
•
Failure to use closed coated discs to
reduce the problem of grains working
loose and scratching the workpiece
Bluish discoloration of metal surface indi-
cates:
•
Excessive heat caused by circular mo-
tion in a small area
• Excessive
pressure
•
Use of worn out or glazed discs
WARNING
Only use wheels with Maximum Safe
Operating Speed rated at or above
the RPM listed on the “WARNING”
section of the tool's nameplate. This
speed is based on the strength of
the wheel, allowing for a reasonable
measure of safety. It is not meant
to imply a best or most effi cient
operating speed. Do not exceed the
Maximum Safe Operating Speed.
Inspecting Wheels
Always handle wheels carefully to avoid
damage. Before installing any wheel, always
inspect it for cracks. If wheel is cracked, dis-
card it to prevent others from using it.
Care of Grinding & Cut-Off Wheels
Grinding and cut-off wheels should be pro-
tected from:
•
wetness and extreme humidity.
•
any type of solvent.
•
extreme changes in temperature.
•
dropping and bumping.
Grinding and cut-off wheels should be
stored:
•
in an organized way so wheels can be
removed without disturbing or damaging
other wheels.
•
with their safety information.
Grinding and cut-off wheels should NOT be:
•
dropped.
•
rolled.
•
bumped.
If any wheel is dropped, rolled, bumped, sub-
jected to extreme changes in temperature,
or has come into contact with solvents or
wetness, discard wheel immediately.
Installing, Removing and Adjusting the
Guard
The guard must be used when using the tool
as a grinder. The guard should be removed
when using tool as a sander.
1. To
install
the guard, unplug the tool
and place it upside down on a level
surface.
2. Remove any accessories from the
spindle.
3. Line up the four tabs with the four slots
(Fig. 4) and then press the guard down
onto the tool.
4. Press in the lock lever and rotate the
guard to one of the fi ve detent slots. The
lock lever must engage with one of the
detents. (Fig. 3)
5. To
remove
the guard, unplug tool and
place it upside down on a level surface.
Remove any accessories from spindle.
6. Press in the lock lever and rotate the
guard to line up the four tabs with the
four slots as shown in (Fig. 4).
7. Lift the guard straight up and away from
the tool.
8. To
adjust
the guard, press in the lock
lever and rotate the guard to one of the
fi ve detents (Fig. 3).
Lock lever
Fig. 4
Tab slot
Tab slot
Tab slot
Tab slot
WARNING
To reduce the risk of injury, the op-
erator should be instructed in the
use, care and protection of grinding
wheels.
WARNING
To reduce the risk of injury:
• ALWAYS use the proper guard.
• ALWAYS properly install the
guard.
• ALWAYS hold the tool fi rmly with
both hands before beginning
grinding.
• NEVER use a wheel that has been
dropped.
• NEVER bang grinding disc onto
work.
• NEVER grind without proper
safety equipment.
Fig. 3
Lock lever
Guard
Lock lever must engage
one of fi ve detents
