241-0384
20V Brushless ½"
Hammer Drill
OPERATOR’S MANUAL
CAUTION:
To Reduce The Risk Of Injury, User Must
Read And Understand Operator’s Manual. Save These
Instructions For Future Reference.
For questions / comments, technical assistance or repair parts –
Please Call Toll Free: 1-866-917-4374 (M-F 8:30am-5:00pm EST).
TABLE OF CONTENTS
Safety Symbols .........................................................Page 2
Safety Instructions ......................................................Page 3
Overview/Specications .................................................Page 8
Assembly .............................................................Page 9
Operation ............................................................. Page 9
Maintenance .......................................................... Page 16
Troubleshooting .......................................................Page 17
Warranty .............................................................Page 18
Page 2
SAFETY SYMBOLS
Some of these following symbols may be used on this tool. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the tool better and
more safely.
Symbol
Name
Designation / Explanation
V Volts Voltage
A Amps Current
Hz Hertz Frequency (cycles per second)
W Watts Power
lbs Pounds Weight
n
0
No-load speed Rotational speed at no load
/min
Revolutions per min-
ute
Unit of speed
BPM Beats per minute Unit of impact frequency
�
or d.c.
Direct current Type of characteristic of current
Read instruction
manual
To reduce the risk of injury, user must
read instruction manual.
WARNING:
To ensure safety and reliability, all repairs should be performed by a
qualified service technician.
Page 3
SAFETY INSTRUCTIONS
The purpose of safety symbols is to attract your attention to possible dangers. The safety
symbols, and the explanations with them, deserve your careful attention and understand-
ing. The symbol warnings do not, by themselves, eliminate any danger. The instructions and
warnings they give are no substitutes for proper accident prevention measures.
WARNING:
Be sure to read and understand all safety instructions in this manual,
including all safety alert symbols such as “DANGER,” ”WARNING,” and “CAUTION”
before using this tool. Failure to following all instructions listed below may result in
electric shock, fire, and/or serious personal injury.
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION.
May be used in conjunction with other symbols or pictographs.
DANGER:
Indicates an imminently hazardous situation, which, if not avoided,
will result in death or serious injury.
WARNING:
Indicates a potentially hazardous situation, which, if not avoided,
could result in death or serious injury.
CAUTION:
Indicates a potentially hazardous situation, which, if not avoided, could
result in minor or moderate injury.
NOTICE: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SAVE THESE INSTRUCTIONS!
Page 4
SAFETY INSTRUCTIONS
GENERAL POWER TOOL SAFETY
WARNINGS
WARNING:
Read all safety
warnings, instructions, illustrations and
specifications provided with this power
tool. Failure to follow all instructions listed
below may result in electric shock, re 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-operated (cordless)
power tool.
WORK AREA SAFETY
1. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
2. Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power
tools create sparks which may ignite the
dust or fumes.
3. Keep children and bystanders away
while operating a power tool. Distractions
can cause you to lose control.
ELECTRICAL SAFETY
1. 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. Unmodied plugs
and matching outlets will reduce the risk of
electric shock.
2. Avoid body contact with earthed
or grounded surfaces, such as pipes,
radiators, ranges and refrigerators. There
is an increased risk of electric shock if your
body is earthed or grounded.
3. Do not expose power tools to rain or
wet conditions. Water entering a power tool
will increase the risk of electric shock .
4. Do not abuse the cord. Never use the
cord for carrying, pulling or unplugging the
power tool. Keep the cord away from heat,
oil, sharp edges or moving parts. Damaged
or entangled cords increase the risk of
electric shock .
5. When operating a power tool outdoors,
use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor use
reduces the risk of electric shock.
6. If operating a power tool in a damp
location is unavoidable, use a ground-fault
circuit interrupter (GFCI) protected supply.
Use of a GFCI reduces the risk of electric shock.
PERSONAL SAFETY
1. Stay alert, watch what you are doing
and use common sense when operating a
power tool. Do not use the tool while tired
or under the influence of drugs, alcohol, or
medication. A moment of inattention while
operating power tools may result in serious
personal injury.
2. Use personal protective equipment.
Always wear eye protection. Protective
equipment, such as a dust mask, non-skid
safety shoes, hard hat, or hearing protection,
used for appropriate conditions, will reduce
the risk of personal injuries.
3. Prevent unintentional starting. Ensure
the switch is in the off-position before
connecting to the power source and/or
battery pack, picking up or carrying the
tool. Carrying power tools with your nger
on the switch or energizing power tools that
have the switch on invites accidents.
4. Remove any adjusting key or wrench
before turning the power tool on. A wrench
or a key left attached to a rotating part of the
power tool may result in personal injury.
Page 5
SAFETY INSTRUCTIONS
5. Do not overreach. Keep proper footing
and balance at all times. This enables better
control of the power tool in unexpected
situations.
6. Dress properly. Do not wear loose
clothing or jewelry. Keep your hair, clothing
and gloves away from moving parts. Loose
clothes, jewelry or long hair can be caught in
moving parts.
7. 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.
8. Do not let familiarity gained from
frequent use of tools allow you to become
complacent and ignore tool safety
principles. A careless action can cause
severe injury within a fraction of a second.
POWER TOOL USE AND CARE
1. 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.
2. Do not use the power tool if the switch
does not turn it on and off. Any power tool
that cannot be controlled with the switch is
dangerous and must be repaired.
3. Disconnect the plug from the power
source and/or remove the battery pack,
if detachable, from the power tool before
making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk
of starting the power tool accidentally.
4. 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.
5. Maintain power tools and accessories.
Check for misalignment or binding of
moving parts, breakage of parts and
any other condition that may affect the
power tool’s operation. If damaged, have
the power tool repaired before use. Many
accidents are caused by poorly maintained
power tools.
6. Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are
easier to control.
7. Use the power tool, accessories
and tool bits etc. in accordance with
these instructions, taking into account
the working conditions and the work to
be performed. Use of the power tool for
operations different from those intended
could result in a hazardous situation.
8. 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
1. Recharge only with the charger
specified by the manufacturer. A charger
that is suitable for one type of battery pack
may create a risk of re when used with
another battery pack.
2. Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and re.
3. 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 re.
4. Under abusive conditions, liquid may
be ejected from the battery; avoid contact.
If contact accidentally occurs, flush with
water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the
battery may cause irritation or burns.
Page 6
SAFETY INSTRUCTIONS
5. Do not use a battery pack or tool that
is damaged or modified. Damaged or
modied batteries may exhibit unpredictable
behavior resulting in re, explosion or risk of
injury.
6. Do not expose a battery pack or tool
to fire or excessive temperature. Exposure
to re or temperature above 265 °F (130 °C)
may cause explosion.
7. 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 specied range
may damage the battery and increase the
risk of re.
SERVICE
1. 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.
2. Never service damaged battery
packs. Service of battery packs should
only be performed by the manufacturer or
authorized service providers.
SAFETY INSTRUCTIONS FOR
ALL OPERATIONS
1. Wear ear protectors when impact
drilling. Exposure to noise can cause
hearing loss.
2. Hold the power tool by insulated
gripping surfaces, when performing an
operation where the cutting accessory
or fasteners may contact hidden wiring.
Cutting accessory or fasteners contacting a
“live” wire may make exposed metal parts
of the power tool “live” and could give the
operator an electric shock.
SAFETY INSTRUCTIONS WHEN
USING LONG DRILL BITS
1. Never operate at higher speed than
the maximum speed rating of the drill bit.
At higher speeds, the bit is likely to bend if
allowed to rotate freely without contacting
the workpiece, resulting in personal injury.
2. Always start drilling at low speed
and with the bit tip in contact with the
workpiece. At higher speeds, the bit is likely
to bend if allowed to rotate freely without
contacting the workpiece, resulting in
personal injury.
3. Apply pressure only in direct line
with the bit and do not apply excessive
pressure. Bits can bend causing breakage
or loss of control, resulting in personal injury.
IMPORTANT SAFETY
INSTRUCTIONS
1. To reduce the risk of electric shock
or damage to the chargers and batteries,
use only with the MASTERFORCE
®
battery
packs and chargers listed below.
Battery pack Charger
252-8029 (1.5Ah)
252-8025 (45W)
252-8023 (60W)
252-8037 (90W)
252-8026 (150W)
252-8043 (2X150W)
252-8031 (2.0Ah)
252-8030 (2.5Ah)
252-8003 (2.5Ah)
252-8034 (4.0Ah)
252-8035 (5.0Ah)
252-8005 (5.0Ah)
252-8007 (7.5Ah)
252-8013 (4.0Ah)
252-8014 (8.0Ah)
Page 7
2. For best results, your battery and tool
should be stored, charged and used in a
location where the temperature is more
than 41°F (5°C) but less than 104°F (40°C).
Do not store outside or in vehicles.
DANGER:
People with electronic
devices, such as pacemakers, should
consult their physician(s) before using this
product. Operation of electrical equipment
in close proximity to a heart pacemaker
could cause interference or failure of the
pacemaker.
WARNING:
• Some dust created by power sanding,
sawing, grinding, drilling, and other
construction activities contains chemicals
known to the state of California to cause
cancer, birth defects, or other reproductive
harm. Some examples of these chemicals
are:
– Lead from lead-based paints
– Crystalline silica from bricks, cement,
and other masonry products
– Arsenic and chromium from chemically-
treated lumber
SAFETY INSTRUCTIONS
• Your risk from these exposures varies,
depending upon how often you do this type
of work. To reduce your exposure to these
chemicals:
– Work in a well-ventilated area.
– Work with approved safety equipment,
such as dust masks that are specially
designed to filter out microscopic
particles.
– Avoid prolonged contact with dust from
power sanding, sawing, grinding, drilling,
and other construction activities. Wear
protective clothing and wash exposed
areas with soap and water. Allowing dust
to get into your mouth or eyes or to lie
on the skin may promote absorption of
harmful chemicals.
SAVE THESE INSTRUCTIONS!
Page 8
OVERVIEW
Keyless Chuck
Torque-Adjustment Ring
Two-Speed
Gearbox Switch
Variable-Speed
Trigger Switch
Direction-Of-Rotation
Selector
LED Work Light
Bit Holder
SPECIFICATIONS
Rated Voltage 20 V d.c.
No-load Speed (n
0
) 0-500 | 0-1,850 /min
Impact Rate 0-7,500 | 0-27,750 BPM
Chuck Capacity Ø 1/2” (13 mm)
Max. Torque 525 in. lbs.
Weight (without battery) 2 lbs. 7 oz. (1.1 Kg)
Mode-Selector Ring
Page 9
OPERATION
ASSEMBLY
WARNING:
If any part is broken or
missing, DO NOT attach the battery pack
or operate the tool until the broken or
missing part is replaced. Failure to do so
could result in possible serious injury.
WARNING:
Do not attempt to
modify this tool or create accessories not
recommended for use with this tool. Any
such alteration or modification is misuse
and could result in a hazardous condition
leading to possible serious injury.
WARNING:
Your tool should
never be connected to the battery pack
when you are assembling parts, making
adjustments, cleaning, or when it is not in
use. Disconnecting the tool will prevent
accidental starting, which could cause
serious personal injury.
PACKING LIST
Cordless hammer drill, bit, belt clip, belt
clip screw, and instruction manual.
UNPACKING
1. Carefully remove the tool and any
accessories from the carton. Make sure
that all items listed in the packing list are
included.
2. Inspect the tool carefully to make sure
that no breakage or damage occurred
during shipping.
3. Do not discard the packing material
until you have carefully inspected and
satisfactorily operated the tool.
ATTACH BATTERY PACK (FIG. 1)
1. Align the raised ribs on the battery pack
with the grooves on the bottom of the
tool, then slide the battery pack onto the
tool.
2. Ensure that the battery-release button
on the battery pack snaps into place
and the battery pack is secured to the
tool before beginning operation.
NOTICE: When placing the battery pack on
the tool, be sure that the raised ribs on the
battery pack align with the grooves on the
tool and the latches snap into place prop-
erly. Improper assembly of the battery
pack
can cause damage to internal components.
DETACH BATTERY PACK (FIG. 1)
1. Press the battery-release button to
release the battery pack.
2. Pull the battery pack to remove it from
the tool.
BELT CLIP INSTALLATION (FIG. 2)
1. Align the rib of the clip with the hole on
the base of the hammer drill.
2. Insert the screw and tighten the screw
securely with a Phillips head screwdriver
(not included). The belt clip can be
positioned on either side of the tool.
FIG. 1
Battery-Release
Button
Page 10
OPERATION
BELT CLIP REMOVAL (FIG. 2)
1. Use a Phillips head screwdriver (not
included) to loosen the screw that
attaches the belt clip to the hammer
drill.
2. Remove the screw and the belt clip.
BIT STORAGE (FIG. 3)
Your hammer drill features a built-in bit
holder on the heel of the tool. After using
the bit, you can insert the bit into the bit
holder for convenient storage.
LED WORK LIGHT (FIG. 4)
The LED work light, located on the base
of the hammer drill, will illuminate when
the trigger switch is depressed before
the hammer drill is running. This provides
additional light on the surface of the
workpiece. The light will automatically
turn off within 10 seconds after the trigger
switch is released.
VARIABLE-SPEED TRIGGER
SWITCH (FIG. 5)
1. To turn the hammer drill ON, press the
trigger switch.
2. To turn the hammer drill OFF, release the
trigger switch.
FIG. 5
Variable-Speed
Trigger Switch
FIG. 4
LED Work Light
FIG. 2
Belt Clip
Screw
FIG. 3
Bit Holder
Bit
Page 11
OPERATION
3. The variable-speed trigger switch
delivers higher speed with increased
trigger pressure and lower speed with
decreased trigger pressure.
WARNING:
Allow the motor to
come to a complete stop before setting
the hammer drill down.
ELECTRIC BRAKE
To stop the hammer drill, release the trigger
switch and allow the chuck to come to a
complete stop. The electric brake quickly
stops the chuck from rotating. This
feature
engages automatically when you release
the trigger switch.
DIRECTION-OF-ROTATION
SELECTOR (FORWARD/CENTER-
LOCK/REVERSE) (FIG. 6)
The direction of bit rotation is reversible
and is controlled by the selector located
above the trigger switch. With the hammer
drill held in normal operating position:
1. Position the direction-of-rotation
selector to the right of the tool for
reverse rotation to remove screws.
2. Position the direction-of-rotation
selector to the left of the tool for forward
rotation to drill or to drive the screws in.
3. Setting the direction-of-rotation selector
in the OFF (center-lock) position helps
reduce the possibility of accidentally
starting the tool when it is not in use.
NOTICE: To prevent gear damage, always al-
low the hammer drill to come to a complete
stop before changing the direction of rotation.
NOTICE: The hammer drill will not run unless
the direction-of-rotation selector is engaged
fully to the left or right.
TWO-SPEED GEARBOX (FIG. 7)
The hammer drill features a two-speed
gearbox for drilling or driving at low or high
speeds. A slide switch is located on the
top of the hammer drill to select either low
speed marked “1” or high speed marked “2”.
The required speed is determined based on
the type of bit, material, and the working
conditions. Use low speed for high power
and torque applications and high speed for
fast drilling or driving applications.
FIG. 6
FIG. 7
High
Low
Page 12
OPERATION
When using hammer drill in the low speed
range, the speed will decrease and the
hammer drill will have more power and
torque. Use low speed for starting holes
without a center punch, drilling metals or
plastic, or in applications requiring a higher
torque.
High speed is better for drilling wood and
wood composites.
NOTICE:
• Avoid running the hammer drill at high
speed for extended periods of time.
Running at high speed under constant
usage may cause the hammer drill to
overheat.
• Make sure that the two-speed gearbox
switch is fully adjusted at the front or the
back position.
CAUTION:
Never adjust the
speed while the tool is running. Failure to
obey this caution could result in serious
damage to the hammer drill.
TORQUE ADJUSTMENT (FIG. 8)
The torque clutch can be adjusted to any of
17 different settings. The higher the torque
setting number, the more force the hammer
drill produces to turn an object in either low
or high rotation speed.
When using the hammer drill for different
driving applications, increase or decrease
the torque in order to help prevent damage
to screw heads, threads, workpiece, etc.
Adjust the torque by rotating the torque-
adjustment ring. The proper setting depends
on the job and the type of bit, fastener, and
material you will be using.
In general, use greater torque for larger
screws. If the torque is too high, the screws
may be damaged or broken. For delicate
operations, such as removing a partially
stripped screw, use a low torque setting. For
operations such as drilling into hardwood,
use a higher torque setting.
CAUTION:
Do not change the
torque setting when the tool is running.
MODE SELECTION (FIG. 9)
Your tool has three operating modes: drilling
with hammering action, drilling only, and
driving screws. To set the operating mode,
rotate the mode-selector ring and torque-
adjustment ring to the desired settings.
To use the hammer-drilling mode
1. Rotate the mode-selector ring until the
hammer symbol is aligned with the
arrow.
FIG. 8
To Decrease Torque
Torque-
Adjustment
Ring
To Increase
Torque
FIG. 9
Torque-
Adjustment
Ring
Arrow
Mode-
Selector
Ring
Page 13
2. Apply pressure to the bit during
operation to engage the hammering
mechanism.
NOTE: The number selected on the
torque-adjustment ring has no effect on
operation of the drill in hammer mode.
To use the drilling only mode
Rotate the mode-selector ring until the drill
symbol
is aligned with the arrow.
NOTE: The number selected on the torque-
adjustment ring has no effect on the
operation of the drill in the drilling mode.
To use the screwdriving mode
1. Rotate the mode-selector ring until the
driving symbol
is aligned with the
arrow.
2. Then rotate the torque-adjustment
ring until the desired clutch setting
appears in line with the arrow. The
torque-adjustment ring, when properly
adjusted, will slip at a preset torque to
prevent driving the screw too deeply
into different materials and to prevent
damage to the screw or tool.
OPERATION
BIT INSTALLATION (FIG. 10)
The hammer drill is equipped with a keyless
chuck to tighten or release bits in the chuck
jaws. The arrows on the chuck indicate the
direction in which to rotate the chuck in or-
der to grip or release the chuck jaws on the
bit.
WARNING:
Do not hold the chuck
with one hand and use the power of the
hammer drill to tighten the chuck jaws on
the drill bit. The chuck could slip in your
hand, or your hand could slip and come
in contact with the rotating bit. This could
cause an accident resulting in serious per-
sonal injury.
WARNING:
• Make sure to insert the bit straight into
the chuck jaws. Do not insert the bit
into the chuck jaws at an angle and then
tighten. This could cause the bit to be
thrown from the hammer drill, resulting
in possibly serious personal injury or
damage to the chuck.
1. Remove the battery pack from the
hammer drill.
2. Open the chuck jaws, by rotating the
sleeve of the keyless chuck, until the
opening is slightly larger than the bit you
intend to use, and raise the front of the
hammer drill slightly to keep the bit from
falling out of the chuck jaws.
3. Insert the bit into the chuck.
4. Rotate the chuck in the direction of
the arrow marked “GRIP” to close the
chuck jaws.
5.
Tighten the chuck jaws securely on the bit.
BIT REMOVAL (FIG. 10)
WARNING:
• Use protective gloves when removing
the bit from the tool, or first allow the bit
to cool down. The bit may be hot after
prolonged use.
FIG. 10
RELEASE
GRIP
Keyless
Chuck
Bit
Chuck
Jaws
Page 14
OPERATION
1. Remove the battery pack from the
hammer drill.
2. Open the chuck jaws.
3. Rotate the chuck in the direction of the
arrow marked “RELEASE” to loosen the
chuck jaws.
4. Remove the bit.
DRILLING
1. Check that the direction-of-rotation
selector is at the forward rotation
setting.
2. Secure the material to be drilled in a vise
or with clamps to keep it from turning as
the drill bit rotates.
3. Hold the hammer drill rmly, and place
the bit at the point to be drilled.
4. Depress the trigger switch to start the
hammer drill.
5. Move the drill bit into the workpiece,
applying only enough pressure to keep
the bit drilling. Do not force the drill or
apply side pressure to elongate a hole.
Let the tool do the work.
6. When drilling hard and smooth surfaces,
use a center punch to mark the desired
location of the hole. This will prevent the
drill bit from slipping off-center as the
hole is started.
7. When drilling metals, use light oil on
the drill bit to keep it from overheating.
The oil will prolong the life of the bit and
increase the drilling efciency.
8. If the bit jams in the workpiece or if the
drill stalls, stop the tool immediately.
Remove the bit from the workpiece and
determine the reason for jamming.
DRILLING WOOD (FIG. 11)
For maximum performance, use high-speed
steel or brad-point bits (both available sepa-
rately) for wood drilling.
1. When drilling “through” holes, place a
block of wood behind the workpiece to
prevent ragged or splintered edges on
the back side of the hole.
2. Begin drilling at a very low speed to
prevent the bit from slipping off the
starting point.
3. Increase speed as the drill bit bites into
the material.
DRILLING METAL
For maximum performance, use high-speed
steel bits (available separately) for metal or
steel drilling.
1. When drilling metals, use light oil on
the drill bit to keep it from overheating.
The oil will prolong the life of the bit and
increase the drilling efciency.
2. Begin drilling at a very low speed to
prevent the bit from slipping off the
starting point.
3. Maintain a speed and a pressure that
allow cutting without overheating the
bit. Applying too much pressure will:
• Overheat the hammer drill
• Wear the bearings
• Bend or burn bits
FIG. 11
Workpiece
Page 15
OPERATION
• Produce off-center or irregularly shaped
holes
DRILLING MASONRY
For maximum performance, use carbide-
tipped masonry bits (available separately)
for masonry drilling.
1. When drilling in masonry, select the
hammer-drilling mode.
2. Drilling soft masonry materials such
as cinder block requires little pressure.
Hard materials, like concrete, require
more pressure.
3. A smooth, even ow of dust indicates
the proper drilling rate. Do not let the bit
spin in the hole without cutting. Do not
use water to settle dust or to cool the
bit.
SCREWDRIVER OPERATION
1. Select the desired speed/torque range
to match the planned operation.
2. Insert a bit that matches the fastener
into the chuck.
3. Make a few practice runs in a scrap
piece before working.
Page 16
MAINTENANCE
WARNING:
• When servicing, use only identical
replacement parts. Use of any other
parts may create a hazard or cause
product damage.
• To avoid serious personal injury, always
remove the battery pack from the
product when cleaning or performing
any maintenance.
• Avoid using solvents when cleaning
plastic parts. Most plastics are
susceptible to damage from various
types of commercial solvents and may
be damaged by their use. Use a clean
cloth to remove dirt, dust, oil, grease,
etc.
• Using compressed air may be the most
effective cleaning method. Always wear
safety goggles when cleaning tools with
compressed air.
CHUCK REPLACEMENT (FIG.12)
The chuck can be removed and replaced
with a new one.
1. Lock the trigger switch by placing the
direction-of-rotation selector in the
center position.
2. Open the chuck jaws. Using a Phillips
head screwdriver, remove the chuck
screw by turning it clockwise (the chuck
screw has left-handed thread).
3. Insert a 5/16-in. or larger hex key into
the chuck of the hammer drill and
tighten the chuck jaws securely.
4. Tap the hex key sharply with a mallet
(not included) in a counterclockwise
direction. This will loosen the chuck for
easy removal.
5. Attach a new chuck to the spindle and
tighten the chuck screw.
Chuck Jaws
Mallet
Hex Wrench
FIG. 12
Page 17
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
The hammer drill does not work.
The battery pack charge
is depleted.
Charge the battery pack.
The bit cannot be installed.
The chuck jaws are not
open wide enough.
Open the chuck jaws
slightly wider than the bit
you are trying to insert.
The bit does not t the
chuck.
Use a bit that is 1/2"
(13mm) in diameter
maximum.
Motor is overheating.
The ventilation slots may
be obstructed.
Clean and clear the
ventilation slots. Do not
cover the ventilation slots
with your hand during
operation.
Page 18
20V Brushless ½" Hammer Drill
01/2025
© 2025 Menard, Inc., Eau Claire, WI 54703
252-8031
OPERATOR’S MANUAL
CAUTION:
To Reduce The Risk Of Injury, User Must
Read And Understand Operator’s Manual. Save These
Instructions For Future Reference.
For questions / comments, technical assistance or repair parts –
Please Call Toll Free: 1-866-917-4374. (M-F 8:30am – 5:00pm Est.)
20V Lithium-Ion Battery Pack
TABLE OF CONTENTS
Safety Symbols ......................................................... Page 2
Safety Instructions ...................................................... Page 3
Overview/Specifications ................................................. Page 6
Assembly ............................................................. Page 7
Operation ............................................................. Page 8
Maintenance .......................................................... Page 11
Troubleshooting ....................................................... Page 12
Page 2
SAFETY SYMBOLS
Some of these following symbols may be used on this tool. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the tool better and
more safely.
Symbol
Name
Designation / Explanation
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
Wh Watt-hours Battery capacity
Ah
Ampere-hours Battery capacity
�
or d.c.
Direct current Type or characteristic of current
n
o
No-load speed Rotational speed at no load
lbs Pounds Weight
Read instruction
manual
To reduce the risk of injury, user must
read instruction manual.
Li-ion RBRC seal
Designates Li-ion battery recycling pro-
gram.
WARNING:
To ensure safety and reliability, all repairs should be performed by a
qualied service technician.
Page 3
SAFETY INSTRUCTIONS
The purpose of safety symbols is to attract your attention to possible dangers. The safety
symbols and the explanations with them deserve your careful attention and understanding.
The symbol warnings do not, by themselves, eliminate any danger. The instructions and
warnings they give are no substitutes for proper accident prevention measures.
WARNING:
Be sure to read and understand all safety instructions in this manual,
including all safety alert symbols such as “DANGER,” ”WARNING,” and “CAUTION”
before using this tool. Failure to follow all instructions listed below may result in electric
shock, re, and/or serious personal injury.
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION.
May be used in conjunction with other symbols or pictographs.
DANGER:
Indicates an imminently hazardous situation, which, if not avoided,
will result in death or serious injury.
WARNING:
Indicates a potentially hazardous situation, which, if not avoided,
could result in death or serious injury.
CAUTION:
Indicates a potentially hazardous situation, which, if not avoided, could
result in minor or moderate injury.
NOTICE: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SAVE THESE INSTRUCTIONS!
Page 4
SAFETY INSTRUCTIONS
WARNING:
Read all safety
warnings and instructions!
Failure to follow the warnings and
instructions 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-operated (cordless) power tool.
WARNING:
Risk of re and
electric shock. Dry location use only. Do
not expose to rain. Risk of injury.
WORK AREA SAFETY
1. Keep the work area clean and well lit.
Cluttered or dark areas invite accidents.
2. Do not operate power tools in explosive
atmospheres, such as in the presence of
ammable liquids, gases or dust. Power
tools create sparks that may ignite the dust
or fumes.
3. Keep children and bystanders away
while operating a power tool. Distractions
can cause you to lose control.
ELECTRICAL SAFETY
1. Avoid body contact with earthed
or grounded surfaces, such as pipes,
radiators, ranges and refrigerators. There
is an increased risk of electric shock if your
body is earthed or grounded.
2. Do not expose power tools to rain or
wet conditions. Water entering a power tool
will increase the risk of electric shock.
BATTERY TOOL USE
AND CARE
1. Recharge only with the charger
specied by the manufacturer. A charger
that is suitable for one type of battery pack
may create a risk of fire when used with
another battery pack.
2. Use power tools only with specically
designated battery packs. Use of any
other battery packs may create a risk of
injury and fire.
3. When the battery pack is not in use,
keep it away from other metal objects,
such as 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.
4. Under abusive conditions, liquid may
be ejected from the battery; avoid contact.
If contact accidentally occurs, flush with
water. If liquid contacts eyes, also seek
medical help. Liquid ejected from the battery
may cause irritation or burns.
SERVICE
1. Have your power tool serviced by a
qualied repair person, using only identical
replacement parts. This will ensure that the
safety of the power tool is maintained.
SPECIFIC SAFETY RULES FOR
BATTERY PACK
1. Use battery only with MASTERFORCE
®
chargers listed.
Battery pack Charger
252-8031
252-8025
252-8023
252-8026
252-8037
252-8043
Page 5
SAFETY INSTRUCTIONS
2. Know your power tool. Read the
Instruction Manual carefully. Learn the tool’s
applications and limitations, as well as the
specific potential hazards related to this
tool. Following this rule will reduce the risk
of electric shock, fire, and serious injury.
3. Do not place the battery near re or
heat. This will reduce the risk of explosion
and possible injury.
4. Do not crush, drop or damage the
battery pack. Do not use a battery pack or
charger that has been dropped or received
a sharp blow. A damaged battery is subject
to explosion. Properly dispose of a dropped
or damaged battery immediately.
5. Batteries vent hydrogen gas and can
explode in the presence of a source of
ignition, such as a pilot light. To reduce
the risk of serious personal injury, never use
any cordless product in the presence of an
open flame. An exploded battery can propel
debris and chemicals. If exposed, flush the
exposed area with water immediately.
6. Do not charge the battery in a damp or
wet location. Following this rule will reduce
the risk of electric shock.
7. For best results, your battery should
be charged, used and stored in a location
where the temperature is more than 41°F
(5°C) but less than 104°F (40°C). Do not
store outside or in vehicles.
8. Under extreme usage or temperature
conditions, battery leakage may occur.
If liquid comes in contact with your skin,
wash immediately with soap and water,
then neutralize with lemon juice or vinegar.
If liquid gets in your eyes, flush them with
clean water for at least 10 minutes, and
then seek immediate medical attention.
Following this rule will reduce the risk of
serious personal injury.
9. Do not let gasoline, oils, petroleum-
based products, etc. come in contact with
plastic parts. They contain chemicals that
can damage, weaken or destroy plastic.
10. Have your battery pack serviced by a
qualied repair person using only identical
replacement parts. This will ensure that the
safety of the battery pack is maintained.
11. Save these instructions. Refer to them
frequently and use them to instruct others
who may use this tool. If you lend someone
this tool, lend these instructions also to
prevent misuse of the product and possible
injury.
Page 6
OVERVIEW
Electrical contacts
Power-indicator button
Battery-release button
Power indicator
SPECIFICATIONS
Battery Type Lithium-Ion
Battery Voltage 20V d.c.
Battery Weight 1.0 lb. (0.45kg)
Battery Capacity 2.0Ah
FIG. 1
Page 7
WARNING:
If any part is broken
or missing, DO NOT attempt to plug in the
power cord, attach the battery, or operate
the tool until the broken or missing part is
replaced. Failure to do so could result in
possible serious injury.
WARNING:
Do not attempt to
modify this tool or create accessories not
recommended for use with this tool. Any
such alteration or modication is misuse
and could result in a hazardous condition
leading to possible serious injury.
WARNING:
Your tool should
never be connected to the power source
when you are assembling parts, making
adjustments, installing or removing
application tools, cleaning, or when it is
not in use. Disconnecting the tool will
prevent accidental starting, which could
cause serious personal injury.
ASSEMBLY
CONTENTS
Battery pack and instruction manual
UNPACKING
1. This product has been shipped
completely assembled.
2. Carefully remove the tool and any
accessories from the box. Make sure
that all items listed in the packing list
are included.
3. Inspect the tool carefully to make sure
that no breakage or damage occurred
during shipping.
4. Do not discard the packing material
until you have carefully inspected and
satisfactorily operated the tool.
Page 8
OPERATION
POWER INDICATOR (Fig. 2)
This Lithium-Ion battery pack is equipped with
a power indicator that displays the battery
pack’s charge status. Press the power-
indicator button to display the LED lights.
The LED lights will stay lit for approximately
4 seconds.
LOW CAPACITY WARNING
If one LED on the power indicator begins to
flash, the battery pack’s charge is under 20%
capacity and should be recharged soon.
Unlike other battery pack types, Lithium-Ion
battery packs deliver fade-free power for their
entire run time. The tool will not experience a
slow, gradual loss of power as you work. To
signal that the battery pack is at the end of its
run time and needs to be charged, power to
the tool will drop quickly.
The power indicator will begin to display
four flashing LED lights when it is completely
discharged. When this happens, remove
the tool from the workpiece and charge the
battery pack as needed.
BATTERY PROTECTION
To protect the battery from damage and
prolong its life, the battery pack circuitry
will turn off the battery pack if it becomes
overloaded or if the temperature becomes too
high during use. This may happen in extremely
high torque, binding and stalling situations.
The battery pack will begin normal operation
when it cools down.
The power indicator will display four flashing
LED lights if the circuitry detects a momentary
overload. You can conveniently reset the
battery pack by releasing the power-tool
trigger. Press the power-indicator button
again to display the remaining charge.
NOTICE: If the power indicator continues to
ash four LED lights after resetting, place
the battery pack on the charger to evaluate
the battery condition.
NOTICE: A signicantly reduced run time
after fully charging the battery pack indicates
that the battery is near the end of its usable
life and must be replaced.
FIG. 2
80-100% Charge
60-79% Charge
40-59% Charge
20-39% Charge
Under 20% Charge
Completely Discharged
High/low temperature
NOTICE: The power indicator can be used
whether the battery is attached to or removed
from the tool.
Page 9
OPERATION
COLD WEATHER OPERATION
When the battery pack is very cold, it may
“pulse” for the first minute of use to warm
itself. Put the battery pack on a tool and use
the tool in a light application. After about a
minute, the battery pack will have warmed
itself and will operate normally.
WHEN TO CHARGE THE
BATTERY PACK
The Lithium-Ion battery can be charged at
any time and will not develop a “memory”
when charged after only a partial discharge.
It is not necessary to run down the battery
pack charge before recharging. Remove
the battery pack from the tool when it is
convenient for you and your job.
1. Use the power indicator to determine when
you need to recharge the battery pack.
2. You can “top-off” your battery pack’s
charge before starting a big job or long
period of use.
3. Due to Lithium-Ion’s fade-free
properties, the only time it is necessary
to charge the Lithium- Ion battery pack
is when the pack has reached the end of
its charge. To signal the end of charge,
power to the tool will drop quickly.
Charge the battery pack as needed.
HOW TO CHARGE THE BATTERY
PACK (FIG. 3)
A fully discharged battery pack will charge
about 70 minutes (with charger 252-8025) in
the desired surrounding temperature.
1. Charge the battery pack with the correct
charger.
2. Connect the charger to a power supply .
3. Attach the battery pack to the charger
by aligning the raised ribs of the battery
pack with the slot in the charger. Slide
the battery pack onto the charger.
4. The charger will communicate with the
battery pack’s circuitry to evaluate the
condition of the battery pack.
5. During normal charging, the green LED
on the charger will flash continuously.
6. After charging is complete, the green
LED on the charger will be on. The
power indicator LED lights will not be
displayed when the power-indicator
button is pressed while the battery pack
is on the charger.
7. The battery pack will fully charge, but
will not overcharge, if left on the charger.
HOW TO KNOW THE CHARGE
CONDITION OF BATTERY PACK
DURING CHARGING
The LED lights on the battery pack are
displayed as the pack is being charged,
indicating how fully charged the pack is.
• The first LED light on the battery pack
flashes to indicate that the battery pack is
0%-25% charged.
• The first LED light on the battery pack is
solid and the second flashes to indicate
that the battery pack is 25%-50% charged.
• The first two LED lights on the battery pack
are solid and the third flashes to indicate
that the battery pack is 50%-75% charged.
• The first three LED lights on the battery
pack are solid and the fourth flashes to
indicate that the battery pack is 75%-
100% charged.
• When it is fully charged, all the LED lights
on the battery pack will be solid for about
30 minutes then will turn off.
FIG. 3
Page 10
OPERATION
CHARGING A HOT
BATTERY PACK
If the battery pack is above the normal
temperature range, the red LED will
illuminate and the green LED will be off.
When the battery pack cools down to
approximately 104°F (40°C), the charger will
automatically begin charging.
CHARGING A COLD
BATTERY PACK
If the battery pack is below the normal
temperature range, the red LED will
illuminate and the green LED will be off.
When the battery warms to a temperature
of more than 41°F (5°C), the charger will
automatically begin charging .
LED FUNCTIONS OF CHARGER (FIG. 4)
LED INDICATOR
BATTERY
PACK
RED
LED
GREEN
LED
ACTION
HI / LO TEMP.
Hot/Cold
battery
On Off
Fast charge will begin
when battery returns
to between 41°F (5°C)
and 104°F (40°C)
DEFECTIVE
BATTERY
Defective Flashing Off
Battery pack or
charger is defective
BATTERY
CHARGING
Charging Off Flashing Charging
BA TTERY
FULL
Fully
charged
Off On
Charging is
complete
DEFECTIVE BATTERY
If the charger detects a problem, the red LED
will begin flashing and the green LED will be off.
1. If registering as defective, remove and
reinsert the battery pack in the charger.
If the LED status indicates “defective”
a second time, try to charge a different
battery pack.
2. If a different battery pack charges
normally, dispose of the defective
battery pack (see Maintenance section).
3. If a different battery pack also indicates
“defective,” the charger may be defective.
FIG. 4
Page 11
MAINTENANCE
WARNING:
To ensure safety and
reliability, all repairs should be performed
by a qualied service technician.
WARNING:
Always wear safety
goggles or safety glasses with side
shields when using compressed air to
clean tool. If the operation is dusty, also
wear a dust mask.
WARNING:
To avoid serious
personal injury, always remove the battery
pack from the tool when cleaning or
performing any maintenance.
BATTERIES:
The battery pack is equipped with Lithium-
Ion rechargeable batteries. The duration of
use from each charge will depend on the
type of work performed.
The batteries in this tool have been designed
to provide maximum trouble-free life. Like
all batteries, they will eventually wear out.
Do not disassemble the battery pack or
attempt to replace the batteries. Handling
the batteries, especially when wearing rings
and jewelry, could result in a serious burn.
To obtain the longest possible battery life,
read and understand the operator’s manual.
It is good practice to unplug the Charger
and remove the Lithium-Ion battery pack
when it is not in use. For Lithium-Ion battery
pack storage longer than 30 days:
1. Store Lithium-Ion battery packs in a
30%-50% charged condition.
2. Every six months of storage, fully charge
the Lithium-Ion battery pack.
3. The exterior may be cleaned with a cloth
or soft non-metallic brush.
BATTERY PACK REMOVAL AND
PREPARATION FOR RECYCLING
To preserve natural resources, please
recycle or dispose of batteries properly.
This product contains Lithium-Ion batteries.
Local, state, or federal laws may prohibit
disposal of Lithium-Ion batteries in ordinary
trash. Consult your local waste authority for
information regarding available recycling
and/or disposal options.
WARNING:
Upon removal of the
battery pack for disposal or recycling,
cover the battery pack’s terminals
with heavy-duty adhesive tape. Do not
attempt to destroy or disassemble battery
pack or remove any of its components.
Lithium-Ion batteries must be recycled or
disposed of properly. Never touch both
terminals with metal objects and/or body
parts as short circuit may result. Keep
away from children. Failure to comply with
these warnings could result in re and/or
serious injury.
Page 12
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
The battery pack
isn’t charging
Unconnected to charger
Attach the battery pack to
the charger.
Page 13
NOTES
Page 14
NOTES
01/2025
© 2025 Menard, Inc., Eau Claire, WI 54703
CHARGER
SLIDE OFF
SLIDE ON
252-8023
For questions / comments, technical assistance or repair parts –
Please Call Toll Free: 1-866-917-4374. (M-F 8:30am-5:00pm Est.)
OPERATOR’S MANUAL
CAUTION:
To Reduce The Risk Of Injury, User Must
Read And Understand Operator’s Manual. Save These In-
structions For Future Reference.
Safety Symbols ......................................................... Page 2
Safety Instructions ...................................................... Page 3
Overview/Specifications ................................................. Page 7
Assembly ............................................................. Page 8
Operation ............................................................. Page 8
Maintenance .......................................................... Page 10
Troubleshooting ....................................................... Page 10
Parts List ............................................................. Page 11
Schematic Drawing .................................................... Page 12
Warranty ............................................................. Page 14
TABLE OF CONTENTS
Page 2
Some of these following symbols may be used on this tool. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the tool better and
more safely.
Symbol Name Designation/Explanation
V Volts Voltage
A Amps Current
Hz Hertz Frequency (cycles per second)
W Watts Power
∿
Alternating current Type of current
lbs Pounds Weight
Class II construction Double insulated construction
Read the
instructions
Alerts user to read manual
E502035
UL Mark
This symbol designates that this tool is
listed by Underwriters Laboratories.
BFP Backfeed protection
It is a protection required by the safety
regulation, which function is to avoid the
current flowing from the battery to the
charger to bring safety risks.
T3.15A
Fuse-links Time-lag miniature fuse-link
WARNING:
To ensure safety and reliability, all repairs should be performed by a
qualied service technician.
SAFETY SYMBOLS
Page 3
SAFETY INSTRUCTIONS
The purpose of safety symbols is to attract your attention to possible dangers. The safety
symbols, and the explanations with them, deserve your careful attention and understanding.
The symbol warnings do not, by themselves, eliminate any danger. The instructions and warn-
ings they give are no substitutes for proper accident prevention measures.
WARNING:
Be sure to read and understand all safety instructions in this manual,
including all safety alert symbols such as “DANGER”, “WARNING” and “CAUTION” before
using this tool. Failure to following all instructions listed below may result in electric shock,
re, and/or serious personal injury.
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION. May be
used in conjunction with other symbols or pictographs.
DANGER:
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
WARNING:
Indicates a potentially hazardous situation, which, if not avoided,
could result in death or serious injury.
CAUTION:
Indicates a potentially hazardous situation, which, if not avoided, could
result in minor or moderate injury.
NOTICE: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SAVE THESE INSTRUCTIONS!
SAFETY INSTRUCTIONS
The purpose of safety symbols is to attract your attention to possible dangers. The safety
symbols, and the explanations with them, deserve your careful attention and understanding.
The symbol warnings do not, by themselves, eliminate any danger. The instructions and warn-
ings they give are no substitutes for proper accident prevention measures.
WARNING:
Be sure to read and understand all safety instructions in this manual,
including all safety alert symbols such as “DANGER”, “WARNING” and “CAUTION” before
using this tool. Failure to follow all instructions listed below may result in electric shock,
re, and/or serious personal injury.
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION. May be
used in conjunction with other symbols or pictographs.
DANGER:
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
WARNING:
Indicates a potentially hazardous situation, which, if not avoided,
could result in death or serious injury.
CAUTION:
Indicates a potentially hazardous situation, which, if not avoided, could
result in minor or moderate injury.
NOTICE: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SAVE THESE INSTRUCTIONS!
Page 4
SAFETY INSTRUCTIONS
FCC STATEMENT
1. This device complies with Part 15 of
the FCC Rules. Operation is subject to the
following two conditions:
1) This device may not cause harmful
interference.
2) This device must accept any interference
received, including interference that may
cause undesired operation.
2. Changes or modications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
NOTICE: This equipment has been
tested and found to comply with the limits
for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection
against harmful interference in a residential
installation. This equipment generates, uses,
and can radiate radio frequency energy and,
if not installed and used in accordance
with the instructions, may cause harmful
interference to radio communications.
However, there is no guarantee that
interference will not occur in a particular
installation. If this equipment does cause
harmful interference to radio or television
reception, which can be determined by
turning the equipment off and on, the
user is encouraged to try to correct the
interference by one or more of the following
measures:
• Reorient or relocate the receiving
antenna.
• Increase the separation between the
equipment and receiver.
• Connect the equipment into an outlet
on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced
radio/TV technician for help.
Page 5
SAFETY INSTRUCTIONS
WARNING:
Read all safety
warnings and instructions!
Failure to follow the warnings and
instructions may result in electric shock,
fire, and/or serious injury. Save all warnings
and instructions for future reference.
WARNING:
Risk of re and
electric shock. Dry location use only. Do
not expose to rain. Risk of injury.
GENERAL SAFETY RULES
WARNING:
Read all safety
warnings and instructions. Failure to
follow the warnings and instructions
may result in electric shock, re, and/or
serious injury.
WARNING:
This appliance is not
intended for use by persons (including
children) with reduced physical, sensory
or mental capabilities, or lack of
experience and knowledge, unless they
have beengiven supervision or instruction
concerning use of the applianceby a
person responsible for their safety.
IMPORTANT SAFETY INSTRUC-
TIONS
1. For indoor use only.
2. Dry location use only.
3. Risk of fire and electric shock.
4. SAVE THESE INSTRUCTIONS – This
manual contains important safety and
operating instructions for battery charger
model 252-8023.
5. Before using battery charger, read
all instructions and cautionary markings
on (1) battery charger, (2) battery, and (3)
product using battery.
6. Working in the vicinity of a lead-acid
battery is dangerous. Batteries generate
explosive gases during normal battery
operation. For this reason, it is of the
utmost importance that each time before
using your charger, you read and follow the
instructions provided exactly.
7. To reduce risk of battery explosion,
follow these instructions and those marked
on the battery.
8. Never charge a frozen battery.
9. Do not operate charger in a closed-in
area or restrict ventilation in any way.
10. Do not use the charger outdoors or
expose it to wet or damp conditions. Water
entering the charger will increase the risk of
electric shock.
11. Use of an attachment not
recommended or sold by the battery-
charger manufacturer may result in a risk
of re, electric shock or personal injury.
12. Do not abuse the cord or charger.
Never use the cord to carry the charger.
Do not pull the charger cord to disconnect
the plug from a receptacle. Damage to the
cord or charger could occur and create an
electric shock hazard. Replace damaged
cords immediately.
13. Make sure that the cord is located
so that it will not be stepped on, tripped
over, come in contact with sharp edges or
moving parts, or otherwise subjected to
damage or stress. This will reduce the risk
of accidental falls, which could cause injury
and damage to the cord, and could then
result in electric shock.
14. Keep the cord and charger away from
heat to prevent damage to the housing or
internal parts.
15. Do not allow gasoline, oils, petroleum
based products, etc. to come in contact
with plastic parts. These materials contain
chemicals that can damage, weaken, or
destroy plastic.
16. Do not operate the charger with a
damaged cord or plug, which could cause
shorting and electric shock. If damaged,
have the charger repaired or replaced by a
qualified service technician.
17. Do not operate the charger if it has
received a sharp blow, been dropped, or
has otherwise been damaged in any way.
Take it to a qualified service technician
Page 6
for an electrical check to determine if the
charger is in good working order.
18. Do not disassemble the charger. Take
it to a qualified service technician when
service or repair is required. Incorrect
reassembly may result in a risk of electric
shock or fire.
19. Unplug the charger from the electrical
outlet before attempting any maintenance
or cleaning to reduce the risk of electric
shock.
20. Disconnect the charger from the power
supply when it is not in use. This will reduce
the risk of electric shock or damage to the
charger if metal items should fall into the
opening. It will also help prevent damage to
the charger during a power surge.
21. Risk of electric shock. Do not touch
the uninsulated portion of the output
connector or uninsulated battery terminal.
22. Save these instructions. Refer to them
frequently and use them to instruct others
who may use this tool. If you lend this tool to
someone else, also lend these instructions
to them to prevent misuse of the product
and possible injury.
CAUTION:
To reduce risk of injury, charge only Masterforce
®
Flexpower
®
20V
Li-Ion rechargeable batteries listed below. Other types of batteries may burst, causing
personal injury and damage. Do not attempt to recharge non-rechargeable batteries with
the charger.
Charger Battery pack
252-8023 252-8031 (2.0 Ah)
252-8030 (2.5 Ah)
252-8003 (2.5 Ah)
252-8034 (4.0 Ah)
252-8013 (4.0 Ah)
252-8035 (5.0 Ah)
252-8005 (5.0 Ah)
252-8007 (7.5 Ah)
252-8014 (8.0 Ah)
DANGER:
People with electronic devices, such as pacemakers, should consult
their physician(s) before using this product. Operation of electrical equipment in close
proximity to a heart pacemaker could cause interference or failure of the pacemaker.
SAVE THESE INTRUCTIONS!
Page 7
SLIDE OFF
SLIDE ON
Air Vents
Red LED
SPECIFICATIONS
Charger Input 120 V~, 60 Hz, 60 W
Charging Time for
Batteries
50 minutes 20V 1.5Ah Li-Ion (252-8029)
65 minutes 20V 2.0Ah Li-Ion (252-8031)
80 minutes 20V 2.5Ah Li-Ion (252-8030, 252-8003)
125 minutes 20V 4.0Ah Li-Ion (252-8034, 252-8013)
160 minutes 20V 5.0Ah Li-Ion (252-8035, 252-8005)
240 minutes 20V 7.5Ah Li-Ion (252-8007)
250 minutes 20V 8.0Ah Li-Ion (252-8014)
Charger Weight XXXlbs. (X.XKg)
Recommended
Charging
and Storage
Temperature
41 °F (5 °C) - 104 °F (40 °C)
OVERVIEW
SPECIFICATIONS
Charger Input 120 V~, 60 Hz, 60 W
Charging Time for
Batteries
60 minutes 20V 2.0Ah Li-Ion (252-8031)
75 minutes 20V 2.5Ah Li-Ion (252-8030, 252-8003)
120 minutes 20V 4.0Ah Li-Ion (252-8034, 252-8013)
150 minutes 20V 5.0Ah Li-Ion (252-8035, 252-8005)
225 minutes 20V 7.5Ah Li-Ion (252-8007)
240 minutes 20V 8.0Ah Li-Ion (252-8014)
Charger Weight 0.87 lbs.
Recommended
Charging
and Storage
Temperature
41 °F (5 °C) - 104 °F (40 °C)
SLIDE OFF
SLIDE ON
Air Vents
Red LED
Charging Bay
Green LED
Page 8
ASSEMBLY
WARNING:
If any part is broken
or missing, do not attempt to plug in the
power cord until the broken or missing part
is replaced. Failure to do so could result in
possible serious injury.
WARNING:
Do not attempt to
modify this tool or create accessories not
recommended for use with this tool. Any
such alteration or modication is misuse
and could result in a hazardous condition
leading to possible serious injury.
WARNING:
Your tool should
never be connected to the power source
when you are assembling parts, making
adjustments, cleaning, or when it is not
in use. Disconnecting the tool will prevent
accidental starting, which could cause
serious personal injury.
PACKING LIST
- Charger
- Instruction manual.
UNPACKING
1. Carefully remove the tool and any
accessories from the carton. Make sure
that all items listed in the packing list are
included.
2. Inspect the tool carefully to make sure
that no breakage or damage occurred
during shipping.
3. Do not discard the packing material
until you have carefully inspected and
satisfactorily operated the tool.
OPERATION
CHARGING THE BATTERY PACK
(FIG. 1)
FIG. 1
A fully discharged battery pack will charge
about 60-240 minutes (depending on
battery type) in the desired surrounding
temperature.
1. Charge the battery pack with the correct
charger.
2. Connect the charger to a power supply.
LED lights on the charger will flash once,
indicating that the charger’s self-inspection
is completed.
3. Attach the battery pack to the charger
by aligning the raised ribs of the battery
pack with the slots in the charger. Slide the
battery pack onto the charger.
4. The charger will communicate with the
battery pack’s circuitry to evaluate the
condition of the battery pack.
5. During normal charging, the green LED
light on the charger will flash continuously,
and the green LED lights on the battery pack
will flash one by one from left to right.
6. After charging is complete, the green LED
light on the charger will be on, the green
LED lights on the battery will remain on for
approximately 30 minutes and then turn off.
7. The battery pack will fully charge, but will
not overcharge, if left on the charger.
Detach
Attach
Page 9
OPERATION
OPERATION
LED FUNCTIONS OF CHARGER
LED INDICATOR
BATTERY
PACK
RED LED
GREEN
LED
ACTION
Hot/Cold
battery
On Off
Fast charge will
begin when battery
returns to 41°F (5°C)
and 104°F (40°C).
Defective Flashing Off
Battery pack
or charger is defective.
Charging Off Flashing Charging
Fully
charged
Off On
Charging is
complete.
High/Low
(See Manual)
Defective
Battery
Battery
Full
Battery
Charging
CHARGING A HOT BATTERY
PACK
If the battery pack is above the normal
temperature range, the red LED light will
illuminate and the green LED light will be
off. When the battery pack cools down to
approximately 104 °F (40 °C), the charger
will automatically begin charging.
CHARGING A COLD BATTERY
PACK
If the battery pack is below the normal
temperature range, the red LED light will
illuminate and the green LED light will be off.
When the battery warms to a temperature
of more than 41 °F (5 °C), the charger will
automatically begin charging.
DEFECTIVE BATTERY
If the charger detects a problem, the red
LED light will begin flashing and the green
LED light will be off.
1. If registering as defective, remove and
reinsert the battery pack in the charger. If
the LED status reads “defective” a second
time, try to charge a different battery pack.
2. If a different battery pack charges
normally, dispose of the defective battery
pack .
3. If a different battery pack also indicates
“defective”, the charger may be defective.
BATTERY CHARGING
If the battery pack is within the normal
temperature range, the green LED light will
begin flashing and the red LED light will be
off, and the four green LED lights on the
battery pack will flash one by one from left
to right.
BATTERY FULL
After the battery is fully charged, the green
LED light on the charger will be on and the
red LED light will be off; the green LED lights
on the battery will shine for approximately
30 minutes and then turn off.
NOTICE:The battery pack will fully charge,
but will not overcharge, if left on the charger.
NOTICE:Charger may warm with several
continuous charge cycles. This is part of the
normal operation of the charge. Charge in a
well ventilated area.
Page 10
OPERATION
WALL-MOUNT HOLES
The charger has hanging holes for
convenient storage. Install screws in the
wall 4 in. (101.6 mm) apart. Use screws
sufficiently strong to hold the combined
weight of the charger and battery pack.
MAINTENANCE
WARNING:
To avoid serious personal injury, always
disconnect the plug from the power
source when cleaning or performing any
maintenance. Contact a qualied service
technician for ALL repairs.
Avoid using solvents when cleaning
plastic parts. Most plastics are susceptible
to damage from various types of
commercial solvents and may be damaged
by their use. Use a clean cloth to remove
dirt, dust, oil, grease, etc.
If the supply cord is damaged, it must
be replaced by a specially prepared cord
available through the service organization.
When servicing, use only identical
replacement parts. Use of any other parts
may create a hazard or cause product
damage. To ensure safety and reliability, all
repairs should be performed by a qualied
service technician.
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
The battery pack isn’t
charging.
The battery pack is not
connected to the charger.
Attach the battery pack to
the charger again.
Battery pack or charger are
too cold or too hot.
Allow the charger and
battery pack to reach the
recommended charging
temperature range and try
charging again.
Page 11
PARTS LIST
No. Part Name No. Part Name
1 Upper Housing 5 Lower Housing
2 Connecting Seat Wire Assembly 6 Self Tapping Screw
3 Power Cord & Plug 7 Foot
4 Main Electric Assembly
Page 12
SCHEMATIC DRAWING
Page 13
NOTES
Page 14
20 Volt LITHIUM-ION CHARGER
03/2025
© 2025 Menard, Inc., Eau Claire, WI 54703
