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6

7

MAINTENANCE

WARNING 

To reduce the risk of per-

sonal injury and damage, never immerse your 
tool, battery pack or charger in liquid or allow 
a liquid to fl ow inside them.

WARNING 

To reduce the risk of injury, 

always unplug the charger and remove the bat-
tery pack from the charger or tool before per-
forming any maintenance. Never disassemble 
the tool, battery pack or charger. Contact a 
MILWAUKEE
 service facility for ALL repairs.

ACCESSORIES

For a complete listing of accessories refer to your

 

MILWAUKEE 

Electric Tool catalog or go online to 

www.milwaukeetool.com. To obtain a catalog, con-
tact your local distributor or a service center listed 
on the back cover of this operator’s manual.

WARNING 

Always remove battery 

pack before changing or removing acces-
sories. Only use accessories specifically 
recommended for this tool. Others may be 
hazardous. 

Maintaining Tool 

Keep your tool, battery pack and charger in good 
repair by adopting a regular maintenance program. 
After six months to one year, depending on use, 
return the tool, battery pack and charger to 

MILWAUKEE

 service facility for:

• Lubrication

• Mechanical inspection and cleaning (gears, 

spindles, bearings, housing, etc.)

• Electrical inspection (battery pack, charger, 

motor)

•  Testing to assure proper mechanical and electrical 

operation

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 
properly, return the tool, charger and battery pack, 
to a 

MILWAUKEE

 service facility for repairs.

Cleaning

Clean dust and debris from charger and tool 
vents. Keep tool handles clean, dry and free of oil 
or grease. Use only mild soap and a damp cloth 
to clean the tool, battery pack and charger since 
certain cleaning 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 detergents containing ammonia. 
Never use flammable or combustible solvents 
around tools.

Repairs

For repairs, return the tool, battery pack and char-
ger to the nearest service center listed on the back 
cover of this operator's manual.

FIVE YEAR TOOL  LIMITED WARRANTY

Every 

MILWAUKEE

 electric power tool (including battery charger) is warranted to the original purchaser 

only to be free from defects in material and workmanship.  Subject to certain exceptions, 

MILWAUKEE

 will 

repair or replace any part on a electric power tool which, after examination, is determined by 

MILWAUKEE

 

to be defective in material or workmanship for a period of fi ve (5) years* after the date of purchase.  Return 
the electric power tool and a copy of proof of purchase to a 

MILWAUKEE

 factory Service/Sales Support 

Branch location or 

MILWAUKEE 

Authorized Service Station, freight prepaid and insured, are requested 

for this warranty to be effective.  This warranty does not apply to damage that 

MILWAUKEE

 determines 

to be from repairs made or attempted by anyone other than 

MILWAUKEE

 authorized personnel, misuse, 

alterations, abuse, normal wear and tear, lack of maintenance, or accidents.

* The warranty period for Hoists (lever, hand chain, & electric chain hoists), all Ni-CD battery packs, 
Work Lights (cordless fl ashlights), Job Site Radios, and Trade Titan™ Industrial Work Carts is one (1) 
year from the date of purchase.  *The warranty period for Li-Ion battery packs that do not contain V™-
technology – 4.0 volts through 18.0 volts - is two (2) years from the date of purchase.

*There is a separate warranty for V™-technology Li-Ion Battery Packs V™18 volts and above that ac-
company V™-technology cordless power tools:

*Every MILWAUKEE V™-technology Li-Ion Battery Pack 18 volts or above is covered by an initial 1000 
Charges/2 Years free replacement warranty.  This means that for the earlier of the fi rst 1000 charges 
or two (2) years from the date of purchase/fi rst charge, a replacement battery will be provided to the 
customer for any defective battery free of charge.  Thereafter, customers will also receive an additional 
warranty on a pro rata basis up to the earlier of the fi rst 2000 charges or fi ve (5) Years from the date 
of purchase/fi rst charge.  This means that every customer gets an additional 1000 charges or three (3) 
years of pro rata warranty on the V™-technology Li-Ion Battery Pack 18 volts or above depending upon 
the amount of use.  During this additional warranty period, the customer pays for only the useable service 
received over and above the fi rst 1000 Charges/2 years, based on the date of fi rst charge and number 
of charges found on the battery pack via Milwaukee’s V™-technology Service Reader.

Warranty Registration is not necessary to obtain the applicable warranty on a 

MILWAUKEE

 product.  The 

manufacturing date of the product will be used to determine the warranty period if no proof of purchase 
is provided at the time warranty service is requested.

ACCEPTANCE OF THE EXCLUSIVE REPAIR AND REPLACEMENT REMEDIES DESCRIBED HEREIN 
IS A CONDITION OF THE CONTRACT FOR THE PURCHASE OF EVERY 

MILWAUKEE

 PRODUCT.  

IF YOU DO NOT AGREE TO THIS CONDITION, YOU SHOULD NOT PURCHASE THE PRODUCT.  IN 
NO EVENT SHALL 

MILWAUKEE

 BE LIABLE FOR ANY INCIDENTAL, SPECIAL, CONSEQUENTIAL OR 

PUNITIVE DAMAGES, OR FOR ANY COSTS, ATTORNEY FEES, EXPENSES, LOSSES OR DELAYS 
ALLEGED TO BE AS A CONSEQUENCE OF ANY DAMAGE TO, FAILURE OF, OR DEFECT IN ANY 
PRODUCT INCLUDING, BUT NOT LIMITED TO, ANY CLAIMS FOR LOSS OF PROFITS.  THIS WAR-
RANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, WRITTEN OR 
ORAL, EXPRESSED OR IMPLIED.  WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, 

MILWAUKEE

 DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A 

PARTICULAR USE OR PURPOSE, AND ALL OTHER WARRANTIES.

This warranty applies to product sold in the U.S.A., Canada and Mexico only.

Please consult the ‘Service Center Search’ in the Parts & Service section of 

MILWAUKEE

’s web-site 

www.milwaukeetool.com or call 1.800.SAWDUST (1.800.729.3878) to locate your nearest service facility 
for warranty and non-warranty service on a 

MILWAUKEE

 electric power tool.

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 fi rmly 
and pull the trigger. Then guide the tool along your 
cutting line. Always hold the shoe fl at against the 
workpiece to avoid excessive vibration.

Cutting Metals

Begin cutting at a slow speed, gradually increas-
ing 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. 

Fig. 5

WARNING 

To reduce the risk of explo-

sion, electric shock and property damage, 
always check the work area for hidden gas 
pipes, electrical wires or water pipes when 
making blind or plunge cuts.

Plunge Cutting 

Your 

MILWAUKEE 

Hackzall

®

 is ideal for plunge cut-

ting directly into surfaces that can not be cut from 
an edge, such as walls or fl oors. Do not plunge cut 
into metal surfaces (see "Cutting Metals").

1. Insert the blade into 

the tool with the teeth 
facing down. Hold the 
tool as shown, 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 cut-

ting, raise the handle of 
the tool slowly until the 
shoe rests fi rmly on the 
workpiece. Then guide 
the tool along your cut-
ting line to acquire the 
desired cut.

Summary of Contents for Hackzall 2420-20

Page 1: ...TOR S MANUAL AFIN DE R DUIRE LE RISQUE DE BLESSURES L UTILISATEUR DOIT LIRE LE MANUEL DE L UTILISATEUR PARA REDUCIR EL RIESGO DE LESIONES EL USUARIO DEBE LEER EL MANUAL DEL OPERADOR 12 VOLT HACKZALL R...

Page 2: ...such as 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 is in the off posi...

Page 3: ...tool accidentally Store idle power tools out of the reach of chil dren and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool Power tools are dangerous...

Page 4: ...clamp until the tang butts against the collar 2 Release collar and the spring loaded mechanism will clamp the blade firmly in place 3 Twist collar in the opposite direction of the ar row to ensure tha...

Page 5: ...tool grasp the handle firmly 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...

Page 6: ...Repairs For repairs return the tool battery pack and char ger to the nearest service center listed on the back cover of this operator s manual Every only to repair o to be d the ele Branch for this t...

Page 7: ...itial 1000 Charges 2 Years free replacement warranty This means that for the earlier of the first 1000 charges or two 2 years from the date of purchase first charge a replacement battery will be provi...

Page 8: ...kzall STARTING SERIAL NO DATE Nov 2008 WIRING INSTRUCTION B56A EXAMPLE Component Parts Small Are Included When Ordering The Assembly Large 0 00 SEE REVERSE SIDE FIG LUBRICATION Type Y Grease No 49 08...

Page 9: ...pindle guide pin 38 flush to outside casting of right gearcase 29 20 23 45 When reassembling switch assembly 20 23 into left motor housing half 45 place LED into housing first then position LED wiring...

Page 10: ...ES WHEN ASSEMBLING REMOVING THE STEEL QUIK LOK BLADE CLAMP Remove external retaining ring 12 and pull front cam 9 off Pull lock pin 14 out and remove remainder of parts and discard REASSEMBLY OF THE S...

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