Milwaukee M18 FUEL SAWZALL 2720-20 User manual

Cat. No.
2720-20
M18 FUEL™ SAWZALL® RECIPROCATING SAW
OPERATOR'S MANUAL
WARNING To reduce the risk of injury, user must read and understand operator's manual.

2
GENERAL POWER TOOL
SAFETY WARNINGS
WARNING
Read all safety warnings, instruc-
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tions provided with this power tool. Failure to
follow all instructions listed below may result in
electric shock, fire and/or serious injury. Save all
warnings and instructions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-oper-
ated (cordless) power tool.
WORK AREA SAFETY
• Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
• Do not operate power tools in explosive atmo-
VSKHUHVVXFK DV LQ WKH SUHVHQFH RI ÀDPPDEOH
OLTXLGV JDVHV RU GXVW Power tools create sparks
which may ignite the dust or fumes.
• .HHSFKLOGUHQDQGE\VWDQGHUVDZD\ZKLOHRSHUDW-
ing a power tool. Distractions can cause you to lose
control.
ELECTRICAL SAFETY
• Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs
and matching outlets will reduce risk of electric shock.
• $YRLG ERG\ FRQWDFW ZLWK HDUWKHG RU JURXQGHG
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
• Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
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rying, pulling or unplugging the power tool. Keep
cord away from heat, oil, sharp edges or moving
parts. Damaged or entangled cords increase the risk
of electric shock.
• When operating a power tool outdoors, use an
H[WHQVLRQFRUGVXLWDEOHIRURXWGRRUXVHUse of a cord
suitable for outdoor use reduces the risk of electric shock.
• If operating a power tool in a damp location is
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(GFCI) protected supply. Use of an GFCI reduces
the risk of electric shock.
PERSONAL SAFETY
• Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
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moment of inattention while operating power tools may
result in serious personal injury.
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protection. Protective equipment such as a dust mask,
non-skid safety shoes, hard hat or hearing protection used
for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch
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the tool. Carrying power tools with your finger on the
switch or energizing power tools that have the switch
on invites accidents.
• 5HPRYHDQ\DGMXVWLQJNH\RUZUHQFKEHIRUHWXUQLQJ
the power tool on. A wrench or a key left attached to a
rotating part of the power tool may result in personal injury.
• 'RQRWRYHUUHDFK.HHSSURSHUIRRWLQJDQGEDODQFH
at all times. This enables better control of the power
tool in unexpected situations.
• Dress properly. Do not wear loose clothing or
jewelry. Keep your hair and clothing away from
moving parts. Loose clothes, jewelry or long hair can
be caught in moving parts.
• If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of dust collection
can reduce dust-related hazards.
• 'RQRWOHWIDPLOLDULW\JDLQHGIURPIUHTXHQWXVHRI
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tool safety principles. A careless action can cause
severe injury within a fraction of a second.
POWER TOOL USE AND CARE
• Do not force the power tool. Use the correct power tool
for your application. The correct power tool will do the
job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn
LWRQDQGRႇAny power tool that cannot be controlled
with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/
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WKHSRZHUWRRO EHIRUH PDNLQJ DQ\ DGMXVWPHQWV
changing accessories, or storing power tools. Such
preventive safety measures reduce the risk of starting
the power tool accidentally.
• Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool
or these instructions to operate the power tool. Power
tools are dangerous in the hands of untrained users.
• Maintain power tools and accessories. Check for
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power tool’s operation. If damaged, have the power
WRROUHSDLUHGEHIRUHXVHMany accidents are caused
by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
• 8VHWKHSRZHUWRRODFFHVVRULHVDQGWRROELWVHWF
in accordance with these instructions, taking into
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performed. Use of the power tool for operations GLႇHUHQW
from those intended could result in a hazardous situation.
• Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
BATTERY TOOL USE AND CARE
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manufacturer. A charger that is suitable for one type
of battery pack may create a risk of fire when used with
another battery pack.
• 8VHSRZHUWRROVRQO\ZLWKVSHFL¿FDOO\GHVLJQDWHG
EDWWHU\SDFNVUse of any other battery packs may
create a risk of injury and fire.
• :KHQEDWWHU\SDFNLVQRWLQXVHNHHSLWDZD\IURP
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a connection from one terminal to another. Shorting
the battery terminals together may cause burns or a fire.
• 8QGHUDEXVLYHFRQGLWLRQVOLTXLGPD\EHHMHFWHGIURP
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additionally seek medical help. Liquid ejected from
the battery may cause irritation or burns.
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PRGL¿HGDamaged or modified batteries may exhibit
unpredictable behavior resulting in fire, explosion or
risk of injury.

3
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excessive temperature. Exposure to fire or temperature
above 265°F (130°C) may cause explosion.
• Follow all charging instructions and do not charge
WKHEDWWHU\SDFNRUWRRORXWVLGHWKHWHPSHUDWXUH
UDQJHVSHFL¿HGLQWKHLQVWUXFWLRQVCharging im-
properly or at temperatures outside the specified range
may damage the battery and increase the risk of fire.
SERVICE
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person using only identical replacement parts. This
will ensure that the safety of the power tool is maintained.
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of battery packs should only be performed by the
manufacturer or authorized service providers.
SPECIFIC SAFETY RULES FOR
SAWZALLTM
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when performing an operation where the cutting
accessory may contact hidden wiring. Cutting ac-
cessory contacting a “live” wire may make exposed
metal parts of the power tool “live” and could give the
operator an electric shock.
• Use clamps or another practical way to secure
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Holding the work by hand or against your body leaves
it unstable and may lead to loss of control.
•
WARNING
To reduce the risk of injury in ap-
plications that produce a consider-
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extraction solution in accordance with the solu-
tion’s operating instructions.
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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.
• 0DLQWDLQODEHOVDQGQDPHSODWHV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 specially designed to
filter out microscopic particles.
SPECIFICATIONS
Cat. No. ..................................................... 2720-20
Volts.............................................................. 18 DC
Battery Type .................................................M18™
Charger Type................................................M18™
Recommended Ambient
Operating Temperature ......................0°F to 125°F
No Load Strokes per Minute ...................... 0 - 3000
Length of Stroke ............................................ 1-1/8"
SYMBOLOGY
Volts
Direct Current
No Load Strokes per Minute (SPM)
CUS UL Listing for Canada and U.S.
FUNCTIONAL DESCRIPTION
1. Shoe
2. Quik-Lok™
blade clamp
3. LED
4. Quik-Lok™ blade
clamp release lever
5. Insulating boot
6
5
4
3
2
1
9
6. Trigger lock
7. Trigger
8. Handle
9. Shoe release lever
10. Hang hook (not shown)
7
8
ASSEMBLY
WARNING
Recharge only with the charger
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PDQXDOVXSSOLHGZLWK\RXUFKDUJHUDQGEDWWHU\
Removing/Inserting the Battery
To remove the battery, push in the release buttons
and pull the battery pack away from the tool.
WARNING
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changing or removing accessories.
To insert the battery, slide the pack into the body
of the tool. Make sure it latches securely into place.
WARNING
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recommended for this tool. Others
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Selecting a Blade
The Quik-Lok® Blade Clamp can be used with all 1/2"
shank universal Sawzall® blades. Use MILWAUKEE
High Performance Super Sawzall® blades for best
performance. When selecting a blade, choose the
right type and length. Many types of blades are
available for a variety of applications: cutting metal,
wood, nail-embedded wood, scroll cutting, roughing-
in, and contours.
Many lengths are also available. Choose a length
long enough to extend beyond the shoe and your
work throughout the stroke. 'RQRWXVHEODGHVOHVV
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shoe throughout the stroke.
Installing and Removing Blades from the
Quik-Lok® Blade Clamp
Remove battery pack
1
2
before changing
blades. Make sure the
spindle and blade
clamp areas are clean.
Metal chips and saw-
dust may prevent the
Quik-Lok® Blade Clamp
from clamping securely.
1. Depending on the job, the blade may be inserted
with the teeth facing up or down. To install a blade,

4
Adjusting the Pivot Shoe
The shoe can be adjusted forward or backward to
eight positions to take advantage of the unused
portion of the blade or for special jobs requiring low
blade clearance.
1. To adjust the shoe, rotate the
shoe release lever toward
the front of the tool and
slide the shoe forward or
backward to the desired
position.
2. To lock the shoe in position,
push the shoe release lever up.
3. After adjusting the shoe, slowly pull the trigger to be
sure the blade always extends beyond the shoe and
your workpiece throughout the stroke.
DO NOT OPERATE SAWZALL® WITHOUT SHOE.
STRIKING THE SPINDLE AGAINST WORKPIECE
MAY DAMAGE THE TOOL.
OPERATION
WARNING
To reduce the risk of injury, always
wear proper eye protection marked
to comply with ANSI Z87.1.
When working in dusty situations, wear appro-
priate respiratory protection or use an OSHA
compliant dust extraction solution.
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or removing accessories. Only use accessories
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Trigger Lock
To lock the trigger, push the trigger lock to the right.
The trigger will not work while the switch is in the
locked position. Always lock the trigger and remove
the battery pack before performing maintenance and
changing accessories. Lock the trigger when storing
the tool and when the tool is not in use.
To unlock the trigger, push the trigger lock to
the left.
WARNING
To reduce the risk of personal in-
jury, always hold tool securely.
Starting, Stopping and Controlling Speed
1. To start the tool, grasp the handle firmly and pull
the trigger.
NOTE: An LED is turned on when the trigger is
pulled.
2. To vary the speed, increase or decrease the pres-
sure on the trigger. The further the trigger is pulled,
the greater the speed.
3. To stop the tool, release the trigger. Make sure the
blade comes to a complete stop before removing
the blade from a partial cut or laying the tool down.
Electric Brake
The electric brake engages when the trigger is re-
leased, causing the blade to stop and allowing you
to proceed with your work. Generally, the saw blade
stops within two seconds. However, there may be a
delay between the time you release the trigger and
when the brake engages. Occasionally the brake may
miss completely. If the brake misses frequently, the
saw needs servicing by an authorized MILWAUKEE
service facility. You must always wait for the blade
to stop completely before removing the saw from
the workpiece.
slide the release lever up. Insert the blade into the
clamp until the tang butts against the collar.
2. Release the lever and the spring loaded mecha-
nism will clamp the blade firmly in place.
3. Tug on blade to make sure it is securely locked in
place.
4. To remove a blade, slide the release lever up
and pull the blade from the tool. Be careful when
handling hot blades.
Quik-Lok® Blade Clamp Maintenance
• Periodically clean dust and debris from the Quik-
Lok® Blade Clamp with dry compressed air.
• If the collar resists, slide the release lever back and
forth to shake debris loose.
• Periodically lubricate Quik-Lok® Blade Clamp with
a dry lubricant such as graphite.
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Quik-Lok® Blade Clamp
Broken blades can be removed by the following
methods.
• Remove battery pack before removing blades.
• Point the tool downward, slide up and hold the
release lever, and shake the tool up and down (DO
NOT turn the tool on while your fingers are holding
the blade clamp open). The shank of the broken
blade should drop out of the clamp.
• If shaking the tool doesn't work...
In most cases, a corner of the broken blade will
extend beyond the blade clamp. Slide up and hold
the release lever, and pull the broken blade out of
the clamp by this corner.
• If the broken stub doesn't extend far enough to be
grabbed by its corner, use a thin blade with small
teeth (such as a metal cutting blade) to hook the
blade that is jammed in the clamp while holding up
the release lever, and pull it out.
WARNING
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PXVWH[WHQGEH\RQGWKHVKRHDQG
workpiece throughout the stroke. Blades may
shatter if they impact the workpiece or shoe.
Stroke
Stroke

General Cutting
For straight or contour cutting from an edge, line
the blade up with your cutting line. Before the blade
contacts the workpiece, grasp the handle firmly and
pull the trigger. Then guide the tool along your cutting
line. Always hold the shoe flat against the workpiece
to avoid excessive vibration.
Cutting Metals
Begin cutting at a slow speed, gradually increasing
speed as you cut. When cutting into metals or hard
materials that can not be cut from an edge, drill a
starting hole larger than the widest part of the blade.
WARNING
To reduce the risk of explosion,
electric shock and property dam-
age, always check the work area for hidden gas
pipes, electrical wires or water pipes when mak-
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Plunge Cutting
Your MILWAUKEE Sawzall® is ideal for plunge cut-
ting directly into surfaces that can not be cut from
an edge, such as walls or floors. Plunge cutting may
be done two ways depending on how the blade is
inserted. Column A shows how to plunge cut with the
teeth of the blade facing downward. Column B shows
how to plunge cut with the teeth of the blade facing
upward. Do not plunge cut into metal surfaces (see
"Cutting Metals").
1. Insert the blade into the tool.
If you inserted the blade with the teeth facing
downward, hold the tool as shown in Column A,
resting the edge of the shoe on the workpiece.
If you inserted the blade with the teeth facing up-
ward, hold the tool as shown in Column B, resting
the edge of the shoe on the workpiece.
2. With the blade just above the workpiece, pull the
trigger. Using the edge of the shoe as a pivot, lower
the blade into the workpiece as shown.
3. As the blade starts cutting, raise the handle of
the tool slowly until the shoe rests firmly on the
workpiece. Then guide the tool along your cutting
line to acquire the desired cut.
NOTE: To make plunge cutting easier, use a heavy
gauge blade and install the blade with the teeth facing
upward as shown in Column B.
AB
MAINTENANCE
WARNING
To reduce the risk of injury, always
unplug the charger and remove the
EDWWHU\SDFNIURPWKHFKDUJHURUWRROEHIRUH
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WKH WRRO EDWWHU\ SDFN RU FKDUJHU &RQWDFW D
MILWAUKEE service facility for ALL repairs.
Maintaining Tool
Keep your tool, battery pack and charger in good
repair by adopting a regular maintenance program.
Inspect your tool for issues such as undue noise,
misalignment or binding of moving parts, breakage of
parts, or any other condition that may DႇHFWthe tool
operation. Return the tool, battery pack, and charger
to a MILWAUKEE service facility for repair. After six
months to one year, depending on use, return the
tool, battery pack and charger to a MILWAUKEE
service facility for inspection.
If the tool does not start or operate at full power with
a fully charged battery pack, clean the contacts on
the battery pack. If the tool still does not work prop-
erly, return the tool, charger and battery pack, to a
MILWAUKEE service facility for repairs.
WARNING
To reduce the risk of personal in-
jury and damage, never immerse
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Cleaning
Clean dust and debris from vents. Keep handles
clean, dry and free of oil or grease. Use only mild
soap and a damp cloth to clean, since certain clean-
ing agents and solvents are harmful to plastics and
other insulated parts. Some of these include gasoline,
turpentine, lacquer thinner, paint thinner, chlorinated
cleaning solvents, ammonia and household deter-
gents containing ammonia. Never use flammable or
combustible solvents around tools.
Repairs
For repairs, return the tool, battery pack and charger
to the nearest service center.
ACCESSORIES
WARNING
Use only
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recommended accesso-
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