DeWalt DWE4120FN Instruction Manual page 9

Paddle switch small angle flathead grinder
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Guards

CAUTION: Guards must be used with all grinding
wheels, cutting wheels and sanding flap discs.
The tool may be used without a guard only when
sanding with conventional sanding discs. Some
applications may require purchasing the correct guard
from your local dealer or authorized service center.
nOTE: Edge grinding and cutting can be performed with
Type 27 wheels designed and specified for this purpose;
1/4" (6.35 mm) thick wheels are designed for surface
grinding while thinner Type 27 wheels need to be examined
for the manufacturer's label to see if they can be used for
surface grinding or only edge grinding/cutting.
nOTE: See the Accessories Chart to select the proper
guard/accessory combination.
Adjusting and Mounting Guard (Fig. D)

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start-up can cause injury.
Adjustment Options
Press and hold the guard release lever 
into the desired working position. The guard release lever
should snap into one of the alignment holes 
guard collar. This ensures that the guard is secure.
Mounting guard (Fig. D)

CAUTION: Prior to mounting guard, ensure the screw,
lever, and spring are fitted correctly before mounting
the guard.
1. With the spindle facing the operator, align the guard
parallel to the mounting slot
2. Slide the guard into the mounting slot with the guard
tabs 
 12 
riding along the 2 flat sides of the collar just
above the mounting slot.
3. Press and hold the guard release lever 
the guard around until the lever engages one of the
alignment holes 
 13 
.
4. Release the guard release lever.
5. To position the guard:
Press and hold the guard release lever 
guard clockwise or anti-clockwise into the desired
working position.
nOTE: The guard body should be positioned between
the spindle and the operator to provide maximum
operator protection.
The guard release lever should snap into one of the
alignment holes 
 13 
on the guard collar. This ensures
that the guard is secure.
6. To remove the guard, press and hold the guard release
lever and rotate the guard around until the lever
disengages from the alignment holes, then slide the
guard off the mounting slot.
 9 
. Rotate the guard
 13 
on the
 11 
in gearcase.
and rotate
 9 
 9 
. Rotate the
Fig. D
Flanges and Wheels

WARNING: To reduce the risk of serious personal
injury, turn unit off and disconnect it from
power source before making any adjustments or
removing/installing attachments or accessories.
An accidental start-up can cause injury.

WARNING: Hubbed wheels are not to be used
on this grinder since the grinding surface of
the wheel might not be within the guard lip.
An improperly mounted hubbed wheel that projects
through the plane of the guard lip cannot be
adequately protected.
Mounting Non-Hubbed Wheels (Fig. E)

WARNING: Failure to properly seat the flanges and/or
wheel could result in serious injury (or damage to the
tool or wheel).

CAUTION: Included flanges must be used with
depressed center Type 27/42 grinding wheels and
Type 1/41 cutting wheels. See the Accessories Chart
for more information.

WARNING: A closed, two-sided cutting wheel guard
is required when using abrasive cutting wheels or
diamond coated cutting wheels.

WARNING: Use of a damaged flange or guard or
failure to use proper flange and guard can re sult in
injury due to wheel breakage and wheel contact. See
the Accessories Chart for more information.
All grinding wheels must use included flanges. Refer to
Accessories Chart for more information.
1. Install the backing flange
raised section (pilot) against the wheel. Be sure the
backing flange recess is seated onto the flats of the
spindle by pushing and twisting the flange before
placing wheel.
2. Place wheel 
against the backing flange, centering
 14 
the wheel on the raised section (pilot) of the
backing flange.
3. While depressing the spindle lock button, thread the
locking flange
 7 
on spindle. If the wheel you are
installing is more than 3.0 mm (1/8") thick, place the
locking flange on the spindle so that the raised section
(pilot) fits into the center of the wheel. If the wheel you
are installing is 3.0 mm (1/8") thick or less, place the
locking flange on the spindle so that the raised section
(pilot) is not against the wheel.
English
13
12
11
9
 6 
on spindle
 4 
with the
7

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