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• 

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 acci

-

dentally occurs, flush with water. If liquid con

-

tacts 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 WRENCHES/IMPACT 

DRIVER

• Hold power tool by insulated gripping surfaces, 

when performing an operation where the fas-

tener may contact hidden wiring. 

Fasteners con-

tacting a “live” wire may make exposed metal parts 

of the power tool “live” and could give the operator 

an electric shock.

 

Wear ear protectors. 

Exposure to noise can 

cause hearing loss.

• Keep hands away from all cutting edges and 

moving parts

.

• 

WARNING

To reduce the risk of injury, when 

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.

• 

WARNING

Some dust created by power sanding, 

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 spe-

cially designed to filter out microscopic particles.

SYMBOLOGY

 

  

Volts

 

 

Direct Current

 

  No Load Revolutions per Minute (RPM)

 

  Impacts per Minute Under Load (IPM)

 

C

US

  UL Listing for

 

  Canada and U.S.

SPECIFICATIONS

Volts

 ..............................................................

18 DC

Battery Type

 .................................................

M18™

Charger Type

 ................................................

M18™

Cat. No. ..................................................... 2662-20

RPM

 .............................................................

0-2000

Drive Shank

 ..........................................1/2" Square

IPM

 ..............................................................

0-2500

Cat. No. ..................................................... 2663-20

RPM

 .............................................................

0-2000

Drive Shank

 ..........................................1/2" Square

IPM

 ..............................................................

0-2500

Cat. No. ..................................................... 2664-20

RPM

 .............................................................

0-2000

Drive Shank

 ..........................................3/4" Square

IPM

 ..............................................................

0-2500

Cat. No. ..................................................... 2665-20

RPM

 .............................................................

0-2000

Drive Shank

 .............................................7/16" Hex

IPM

 ..............................................................

0-2500

Recommended Ambient 

   Operating Temperature

 ......................

0°F to 125°F

FUNCTIONAL DESCRIPTION

1. Handle

2. 

Trigger 

3. Control

 switch

4. Drive shank

5. Hex drive (2665-20)

6. Square drive wit

h pin detent (2662-20)

7. Square drive with hog ring (2663-20, 2664-20)

3

1

5

7

6

4

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