241-0382
Brushless Impact Driver
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 13
Troubleshooting ....................................................... Page 13
Warranty .............................................................Page 14
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
RPM
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.
Wear safety goggles
To reduce the risk of injury, always wear
eye protection.
Wear hearing
protection
Alerts user to wear hearing protection.
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 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 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 an 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 a power tool while
you are 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
personal injuries.
3. Prevent unintentional starting. Ensure
the switch is in the off-position before
connecting to 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 and
clothing 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 212 °F (100 °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.
IMPACT DRIVER SAFETY
WARNINGS
• Hold the power tool by insulated gripping
surfaces, when performing an operation
where the fastener may contact hidden
wiring or its own cord. Fasteners contacting
a “live” wire may make exposed metal parts
of the power tool “live” and could give the
operator an electric shock.
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.
Battery pack Charger
252-8029 (1.5Ah)
252-8025
252-8037
252-8026
252-8031 (2.0Ah)
252-8030 (2.5Ah)
252-8003 (2.5Ah)
252-8034 (4.0Ah)
252-8035 (5.0Ah)
252-8005 (5.0Ah)
252-8027 (7.5Ah)
252-8007 (7.5Ah)
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.
Page 7
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
• Your risk from these exposures varies,
depending upon how often you do this
type of work. To reduce your exposure to
these chemicals:
SAFETY INSTRUCTIONS
– Work in a well-ventilated area.
– Work with approved safety equipment,
such as dust masks that are specially
designed to lter 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
Sleeve
Variable-Speed
Trigger Switch
Direction-of-Rotation
Selector
LED Worklight
Bit Holder
SPECIFICATIONS
Rated Voltage 20 V d.c.
No-load Speed 0-2,800 RPM
Impact Rate 0-3,500 BPM
Max. Torque 1800 in. lbs.
Collet Capacity 1/4” (6.35 mm) Hex-shank with power
groove
Weight (without battery) 2 lb. 4 oz. (1.04 Kg)
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 impact driver
• Bit
• Belt clip
• Screw for belt clip
• Operator’s 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.
WARNING:
Detach the battery
pack from the tool before performing any
assembly or adjustments, or changing
accessories. Such preventive safety
measures reduce the risk of starting the
tool accidentally.
TO ATTACH BATTERY PACK (FIG. 1)
FIG. 1
Battery-Release Button
1. Align the raised rib 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 rib on the
battery pack aligns with the groove on the
tool and the latches snap into place prop-
erly. Improper assembly of the battery pack
can cause damage to internal components.
TO 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.
Page 10
OPERATION
TO INSTALL THE BELT CLIP
(FIG. 2)
FIG. 2
Belt Clip
Screw
1. Align the rib of the clip with the hole on
the base of the impact driver.
2. Insert the screw and tighten the screw
securely with a screwdriver (not included).
The belt clip can be positioned on either
side of the tool.
TO REMOVE THE BELT CLIP
(FIG. 2)
1. Use a screwdriver (not included) to
loosen the screw that attaches the belt clip
to the impact driver.
2. Remove the screw and the belt clip.
Keep them in a safe place for future use.
TO STORE THE BIT (FIG. 3)
FIG. 3
Bit
Bit Holder
Your impact driver is equipped with a bit
holder on the heel of the tool. After using
the bit, you can insert the bit into the bit
holder for convenient storage.
VARIABLE-SPEED TRIGGER
SWITCH (FIG. 4)
FIG. 4
Variable-Speed
Trigger Switch
1. To turn the impact driver on, press the
trigger switch.
2. To turn the impact driver off, release the
trigger switch.
3. The variable-speed trigger switch
delivers higher speed with increased trigger
pressure and lower speed with decreased
trigger pressure.
ELECTRIC BRAKE
To stop the impact driver, 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.
Page 11
OPERATION
LED WORKLIGHT (FIG. 5)
FIG. 5
LED Worklight
The LED worklight, located on the base
of the impact driver, will illuminate when
the trigger switch is depressed before the
impact driver is running. This provides
additional light on the surface of the
workpiece. The light will automatically turn
off within 10 seconds after releasing the
trigger.
DIRECTION-OF-ROTATION
SELECTOR (FIG. 6)
FIG. 6
Direction-
of-Rotation
Selector
Reverse Forward
The direction of bit rotation is reversible
and is controlled by a selector located
above the trigger switch. With the impact
driver held in normal operating position:
1. Position the direction-of-rotation
selector to the right of the tool for reverse
rotation.
2. Position the direction-of-rotation
selector to the left of the tool for forward
rotation.
3. Position the direction-of-rotation
selector in the off (center-lock) position to
help reduce the possibility of accidental
starting when not in use.
NOTICE: To prevent gear damage, always al-
low the impact driver to come to a complete
stop before changing the direction of rotation.
NOTICE: The impact driver will not run unless
the direction-of-rotation selector is engaged
fully to the left or right.
TO INSTALL A BIT (FIG.7)
FIG. 7
1. Lock the trigger switch by placing the
direction-of-rotation selector in the off
(center-lock) position.
2. With one hand, pull the sleeve toward
the front of the tool and hold it in place.
3. With the other hand, insert the 1/4” (6.35
mm) bit into the hex chuck.
4. Release the sleeve and verify that it
returns to its original position.
WARNING:
If the sleeve does not
return to its original position, the bit is not
correctly installed. Retry until the bit is
properly installed.
Page 12
OPERATION
TO REMOVE THE BIT (FIG.7)
1. Lock the variable-speed trigger switch
by placing the direction-of-rotation selector
in the off (center-lock) position.
2. Pull the sleeve toward the front of the
tool, and hold it in place.
3. Remove the bit from the hex chuck.
4. Release the sleeve.
WARNING:
Use protective gloves
when removing the bit from the tool, or
allow the bit to cool down first. The bit
may be hot after prolonged use.
TO TIGHTEN AND LOOSEN
SCREWS AND NUTS
1. Install the correct bit.
2. Apply just enough pressure to keep the
bit engaged on the screw or nut.
3. Apply minimal pressure to the trigger
switch initially. Increase the speed only
when full control can be maintained.
WARNING:
Do not over-tighten,
as the force of the impact driver can
break the fastener. Keep the impact driver
at a right angle to the fastener to avoid
damaging the fastener head.
NOTICE: This impact driver is equipped with
an electric brake. When the brake is function-
ing properly, sparks may be visible through
the ventilation slots in the housing. This is
normal and is the action of the brake.
Page 13
TROUBLESHOOTING
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.
PROBLEM CAUSE SOLUTION
The impact driver does not work. The battery is depleted. Charge the battery.
The bit cannot be installed.
The chuck sleeve is not
released.
Release the chuck
sleeve.
The bit does not t the
sleeve.
Use a suitable bit.
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 14
SAVE YOUR RECEIPTS
THIS WARRANTY IS VOID WITHOUT THEM
BRUSHLESS IMPACT DRIVER
WARRANTY
90-DAY MONEY BACK GUARANTEE:
This MASTERFORCE® brand power tool carries our 90-DAY Money Back
Guarantee. If you are not completely satised with your MASTERFORCE® brand
power tool for any reason within ninety (90) days from the date of purchase, return
the tool with your original receipt to any MENARDS® retail store, and we will provide
you a refund – no questions asked.
3-YEAR LIMITED WARRANTY:
This MASTERFORCE® brand power tool carries our famous No Hassle 3-Year Limited
Warranty to the original purchaser. If, during normal use, this MASTERFORCE® power
tool breaks or fails due to a defect in material or workmanship within three (3) years
from the date of original purchase, simply bring this tool with the original sales receipt
back to your nearest MENARDS® retail store. At its discretion, MASTERFORCE®
agrees to have the tool or any defective part(s) repaired or replaced with the same or
similar MASTERFORCE® product or part free of charge, within the stated warranty
period, when returned by the original purchaser with original sales receipt. Not
withstanding the foregoing, this limited warranty does not cover any damage that
has resulted from abuse or misuse of the Merchandise. This warranty: (1) excludes
expendable parts including but not limited to blades, brushes, belts, bits, light bulbs,
and/or batteries; (2) shall be void if this tool is used for commercial and/or rental
purposes; and (3) does not cover any losses, injuries to persons/property or costs. This
warranty does give you specic legal rights and you may have other rights, which vary
from state to state. Be careful, tools are dangerous if improperly used or maintained.
Seller’s employees are not qualied to advise you on the use of this Merchandise.
Any oral representation(s) made will not be binding on seller or its employees. The
rights under this limited warranty are to the original purchaser of the Merchandise
and may not be transferred to any subsequent owner. This limited warranty is in lieu
of all warranties, expressed or implied including warranties or merchantability and
tness for a particular purpose. Seller shall not be liable for any special, incidental, or
consequential damages. The sole exclusive remedy against the seller will be for the
replacement of any defects as provided herein, as long as the seller is willing or able
to replace this product or is willing to refund the purchase price as provided above.
For insurance purposes, seller is not allowed to demonstrate any of these power tools
for you.
For questions / comments, technical assistance or repair parts – Please Call Toll
Free: 1-866-917-4374 (M-F 8:30am-5:00pm EST).
Page 15
06/2021
© 2017 Menard, Inc., Eau Claire, WI 54703
