Maintenance - DeWalt D28490 Instruction Manual

includes proper, matching flanges. Failure to use proper flange
and guard can result in injury resulting from wheel breakage and
wheel contact.
MOUNTING CLOSED (TYPE 1) GUARD
WARNING: Turn off and unplug tool before making any
adjustments or removing or installing accessories. Before
reconnecting the tool, depress and release the trigger switch
to ensure that the tool is off.
1. Align the lugs with slots on the gear case cover. Position the
guard facing backward, as shown.
2. Push the guard down until the guard lug engages and rotates
freely in the groove on the gear case hub.
3. Rotate guard into desired working position. The guard body
should be positioned between the spindle and the operator to
provide maximum operator protection.
4. Secure the guard on the gear case cover. You should be
unable to rotate the guard by hand when the latch is in closed
position. Do not operate grinder with a loose guard or clamp
lever in open position.
NOTE: The guard is pre-adjusted to the dia met er of the gear case
hub at the factory. If, after a period of time, the guard be comes
loose, tighten the adjusting screw.
MOUNTING CUTTING WHEELS
1. Remove mount.
2. Install wheel backing flange, aligning flats on spindle with flats
on backing flange.
3. Place the wheel on the backing flange, centering the wheel on
the backing flange pilot.
4. Install the clamp nut, ensuring that the wheel remains centered
on the backing flange.
5. Depress the spindle lock button and tighten clamp nut with
wrench.
6. Reverse the above procedure to remove the wheel.
USING CUTTING WHEELS
1. Allow tool to reach full speed before touching tool to work
surface.
2. Apply minimum pressure to work surface, allowing tool to
operate at high speed.
3. Once you begin a cut, maintain the angle of the cutting wheel
to the work surface. This will keep you from bending the wheel
which could result in wheel breakage and injury.
4. Remove the tool from work surface before turning tool off. Allow
the tool to stop rotating before setting it down.

MAINTENANCE

WARNING: Turn off and unplug tool before making any
adjustments or removing or installing accessories. Before
reconnecting the tool, depress and release the trigger switch
to ensure that the tool is off.
Cleaning
WARNING: Blow dirt and dust out of the main housing with dry
air as often as dirt is seen collecting in and around the air vents.
Wear approved eye protection and approved dust mask when
performing this procedure.
WARNING: Never use solvents or other harsh chemicals for
cleaning the non-metallic parts of the tool. These chemicals may
weaken the materials used in these parts. Use a cloth dampened
only with water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into a liquid.
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