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4
5
Fig. 2
HACKZALL
Blade clamp
Blade
ASSEMBLY
OPERATION
WARNING To reduce the risk of injury,
keep hands away from the blade and other
moving parts. Always wear safety goggles or
glasses with side shields. Use only specifi -
cally recommended accessories. Others may
be hazardous.
Trigger Lock
To lock the trigger,
push the trigger lock as
shown.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 chang-
ing accessories. Lock the
trigger when storing the
tool and when the tool is
not in use.
To unlock the trigger,
push the trigger lock as
shown.
WARNING
To reduce the risk
of injury, be sure the
blade always extends
beyond the shoe and
workpiece throughout
the stroke. Blades may
shatter if they impact
the workpiece or shoe
(Fig. 3).
Stroke
Stroke
Fig. 3
WARNING Always remove battery
pack before changing or removing acces-
sories. Only use accessories specifically
recommended for this tool. Others may be
hazardous.
Inserting/Removing the
Battery
To remove the battery, push in
the release buttons and pull the
battery pack away from the tool.
To insert the battery, slide the
pack into the body of the tool.
Make sure it latches securely
into place.
less than 3-1/2” long since they won’t extend
beyond the shoe throughout the stroke.
For best performance and longest life, see your
MILWAUKEE Electric Tool catalog or go online to
www.milwaukeetool.com to select the best blade
for the job.
Installing and Removing Blades from the Quik-
Lok
®
Blade Clamp
Remove battery pack before changing blades.
Make sure the spindle and blade clamp areas are
clean. Metal chips and sawdust 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, twist collar in the direction of the arrow
while inserting the blade into the clamp until the
tang butts against the collar.
2. Release collar and the spring loaded mechanism
will clamp the blade fi rmly in place.
3. Twist collar in the opposite direction of the ar-
row to ensure that the blade is locked into the
clamp.
4. Tug on blade to make sure it is securely locked
in place.
5. To remove a blade, twist collar in the direction of
the arrow while pulling on the blade. Be careful
when handling hot blades.
Symbology
Direct Current
No Load Strokes
per Minute (SPM)
Underwriters Laboratories, Inc.
United States and Canada
Release
buttons
Fig. 1
WARNING Recharge only with the char-
ger specifi ed for the battery. For specifi c charg-
ing instructions, read the operator’s manual
supplied with your charger and battery.
Push for
Unlock
Fig. 4
Push for
Lock
Fuel Gauge
To determine the amount of charge left in the bat-
tery, pull the trigger. The Fuel Gauge will light up
for 2-3 seconds.
To signal the end of charge, 1 light on the fuel gauge
will fl ash for 2-3 seconds.
Starting, Stopping and Controlling Speed
To start the tool, grasp the handle fi rmly and pull
the trigger. An LED is turned on when the trigger
is pulled.
To vary the speed, increase or decrease the pres-
sure on the trigger. The further the trigger is pulled,
the greater the speed.
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.
• Point the tool downward, twist the collar, and
shake the tool up and down (DO NOT turn the tool
on while your fi ngers 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. Twist the collar 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 twisting
the collar and pull it out.
Quik-Lok
®
Blade Clamp Maintenance
• Periodically clean dust and debris from the Quik-
Lok
®
Blade Clamp with dry compressed air.
• If the collar resists twisting, twist the collar back
and forth to shake debris loose.
• Periodically lubricate Quik-Lok
®
Blade Clamp with
a dry lubricant such as graphite.
Removing broken blades from the Quik-Lok
®
Blade Clamp
Broken blades can be removed by the following:
• Remove battery pack before removing blades.
Selecting a Blade
The Quik-Lok
®
Blade Clamp can be used with
all 1/2” shank universal Hackzall
®
and Sawzall
®
blades. Use MILWAUKEE blades for best perfor-
mance. 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. Do not use blades
Functional Description
Cat. No.
Volts
DC
No Load Strokes
Per Minute
Length of
Stroke
2420-20 12 0 - 3000 1/2”
Specifi cations
1. Shoe
2. Quik-Lok™ blade clamp
3. Fuel Gauge
4. Handle
5. Trigger
2
1
6
5
4
7
3
6. Trigger lock
7. LED