DeWalt DCM849 Original Instructions Manual page 13

Intended Use
Your DCM849 heavy-duty polisher has been designed for
polishing painted or unfinished metal, fiberglass, and composite
surfaces in professional applications. Common examples of
use include but are not limited to: auto/marine/RV/motorcycle
detailing and finish correction, boat construction and repair, and
metal or concrete finishing.
DO nOT use under wet conditions or in the presence of
flammable liquids or gases.
This heavy-duty polisher is a professional power tool.
DO nOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
this tool.
• Young children and the infirm. This appliance is not
intended for use by young children or infirm persons
without supervision.
• This product is not intended for use by persons (including
children) suffering from diminished physical, sensory or
mental abilities; lack of experience, knowledge or skills
unless they are supervised by a person responsible for their
safety. Children should never be left alone with this product.
ASSEMBLY AND ADJUSTMENTS

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.

WARNING: Use only D
e
Inserting and Removing the Battery Pack
from the Tool (Fig. B)
nOTE: Make sure your battery pack
To Install the Battery Pack into the Tool Handle
1. Align the battery pack with the rails inside the tool's
1
handle (Fig. B).
2. Slide it into the handle until the battery pack is firmly seated
in the tool and ensure that you hear the lock snap into place.
To Remove the Battery Pack from the Tool
1. Press the release button
2
out of the tool handle.
2. Insert battery pack into the charger as described in the
charger section of this manual.
Fuel Gauge Battery Packs (Fig. B)
Some D WALT battery packs include a fuel gauge which
e
consists of three green LED lights that indicate the level of
charge remaining in the battery pack.
To actuate the fuel gauge, press and hold the fuel gauge
button 13 . A combination of the three green LED lights will
illuminate designating the level of charge left. When the level
of charge in the battery is below the usable limit, the fuel gauge
will not illuminate and the battery will need to be recharged.
WALT battery packs and chargers.
1 is fully charged.
and firmly pull the battery pack
nOTE: The fuel gauge is only an indication of the charge left on
the battery pack. It does not indicate tool functionality and is
subject to variation based on product components, temperature
and end-user application.
Auxiliary Handle (Fig. A)

WARNING: Before using the tool, check that the handle is
tightened securely.
An auxiliary handle 7 is supplied with your tool and can be
installed on either side of the gear case. This handle should be
used at all times to maintain complete control of the tool.
Wool Ingestion Shields (Fig. A)
The wool ingestion shields
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amount of wool, dust, and debris that gets ingested by the
motor during normal use.
Clean the shields as soon as you start to see buildup on the
outside. To clean the wool ingestion shields:
Each ingestion shield can be easily removed for cleaning by
slipping a finger or coin underneath the removal recess and
pulling to release the cover.
Spindle Lock Button (Fig. A)
NOTICE: To reduce the risk of damage to the tool, do
not engage the spindle lock while the tool is operating.
Damage to the tool will result and attached accessory
may spin off possibly resulting in injury.
In order to prevent the spindle of the tool from rotating while
installing or removing accessories, a spindle lock button
been provided in the gear head of the machine.
To lock the spindle, depress and hold the lock button. NEVER
DEPRESS THE SPINDLE LOCK BUTTON WITH THE TOOL RUNNING
OR COASTING.
Attaching and Removing Polishing Pads
(Fig. A, C, D)

WARNING: To reduce the risk of serious personal injury,
do not allow any loose portion of the polishing bonnet
or its attachment strings to spin freely. Tuck away or
trim any loose attachment strings. Loose and spinning
attachment strings can entangle your fingers or snag on
the workpiece.
Polishing pads with a diameter of 150, 180 or 230 mm may be
used with the DCM849.
nOTE: The DCM849 may use either type of polishing pad
assembly described below.
To Attach Polishing Pad With Rubber Backing
Pad (Fig. A, C)
1. Engage the hexagonal hole in the backing pad
the clamp washer 17 and backing pad firmly together,
place the assembly on the tool spindle
2. Hold the spindle lock button
pad and clamp washer clockwise to thread them completely
on the spindle. Tighten firmly by hand.
3. Fix the polishing pad onto the backing pad.
16
English
are designed to reduce the
has
6
18 . Holding
.
8
6 while turning the backing
11