• When battery pack is not in use, keep it away
from other metal objects, like paper clips, coins,
keys, nails, screws or other small metal objects,
that can make a connection from one terminal
to another. Shorting the battery terminals together
may cause burns or a fire.
• Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact ac-
cidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation
or burns.
• Do not use a battery pack or tool that is dam-
aged or modified. Damaged or modified batteries
may exhibit unpredictable behavior resulting in fire,
explosion or risk of injury.
• Do not expose a battery pack or tool to fire or
excessive temperature. Exposure to fire or tem-
perature above 265°F (130°C) may cause explosion.
• Follow all charging instructions and do not charge
the battery pack or tool outside the temperature
range specified in the instructions. Charging
improperly or at temperatures outside the specified
range may damage the battery and increase the risk
of fire.
SERVICE
• Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
• Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorized service providers.
SPECIFIC SAFETY RULES FOR
IMPACT DRIVER
• Hold the power tool by insulated gripping sur-
faces, when performing an operation where the
fastener may contact hidden wiring. Fasteners
contacting a "live" wire may make exposed metal
parts of the power tool "live" and could give the
operator an electric shock.
• Wear ear protectors when impact drilling. Expo-
sure to noise can cause hearing loss.
• Use only sockets and other accessories spe-
cifically designed for use on impact wrenches
and drivers. Other sockets and accessories might
shatter or break causing injury.
•
To reduce the risk of injury, when
WARNING
working in dusty situations, wear
appropriate respiratory protection or use an
OSHA compliant dust extraction solution.
• Always use common sense and be cautious when
using tools. It is not possible to anticipate every
situation that could result in a dangerous outcome.
Do not use this tool if you do not understand these
operating instructions or you feel the work is beyond
your capability; contact Milwaukee Tool or a trained
professional for additional information or training.
• Maintain labels and nameplates. These carry
important information. If unreadable or missing,
contact a MILWAUKEE service facility for a free
replacement.
•
Some dust created by power sanding,
WARNING
sawing, grinding, drilling, and other
construction activities contains chemicals known to
cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• lead from lead-based paint
• crystalline silica from bricks and cement and other
masonry products, and
• arsenic and chromium from chemically-treated
lumber.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such
as those dust masks that are specially designed to
filter out microscopic particles.
SYMBOLOGY
Volts
Direct Current
No Load Revolutions per Minute (RPM)
Impacts per Minute Under Load (IPM)
UL Listing for Canada and U.S.
C
US
SPECIFICATIONS
Volts.............................................................. 18 DC
Battery Type .................................................M18™
Charger Type................................................M18™
Recommended Ambient
Operating Temperature ......................0°F to 125°F
Cat. No. ..................................................... 2850-20
RPM ........................................................... 0 - 3400
IPM ............................................................ 0 - 4200
Cat. No. ..................................................... 2851-20
RPM ........................................................... 0 - 3400
IPM ............................................................ 0 - 4200
FUNCTIONAL DESCRIPTION
4
3
2
1. Speed control switch
(2851-20 only)
2. Trigger
3. LED
4. 1/4" Hex drive chuck
5. Control switch
6. Handle
7. Belt clip
3
1
7
5
6