Masterforce 7633 BOOST 20-Volt Brushless Cordless 4-Tool User Manual

241-0485

17 19 21 23

OPERATOR’S MANUAL

CAUTION:

To Reduce the Risk of Injury, User Must

Read and Understand the 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.)

BRUSHLESS DRILL/DRIVER

TABLE OF CONTENTS

Safety Symbols ......................................................... Page 2

Safety Instructions ...................................................... Page 4

Overview/Speciﬁcations ................................................. 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

No-load Speed Rotational speed at no load

RPM

Revolutions per

Minute

Unit of speed

�

or d.c Direct Current Type of characteristic of current

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 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 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

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, 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.

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. Unmodiﬁed 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 ﬁnger on the

switch or energising 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.

5. Do not overreach. Keep proper footing

and balance at all times. This enables better

control of the power tool in unexpected

situations.

SAFETY INSTRUCTIONS

Page 5

SAFETY INSTRUCTIONS

6. Dress properly. Do not wear loose

clothing or jewellery. Keep your hair and

clothing away from moving parts. Loose

clothes, jewellery 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 ﬁre 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

ﬁre.

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 ﬁre.

Page 6

SAFETY INSTRUCTIONS

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.

5. Do not use a battery pack or tool that

is damaged or modiﬁed. Damaged or

modiﬁed batteries may exhibit unpredictable

behaviour resulting in ﬁre, explosion or risk

of injury.

6. Do not expose a battery pack or tool

to ﬁre or excessive temperature. Exposure

to ﬁre or temperature above 100 °C (212 °F)

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 speciﬁed range

may damage the battery and increase the

risk of ﬁre.

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. Use the auxiliary handle. Loss of control

can cause personal injury.

2. Hold the power tool by insulated

gripping surfaces, when performing an

operation where the cutting accessory 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

• 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.

• 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.

• 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.

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:

• 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!

IMPORTANT SAFETY

INSTRUCTIONS

1. To reduce the risk of electric shock

or damage to the chargers and batteries,

use only with the MASTERFORCE

FLEXPOWER

battery packs and chargers

listed.

Battery pack Charger

252-8029 (1.5Ah)

252-8031 (2.0Ah)

252-8030 (2.5Ah)

252-8034 (4.0Ah)

252-8035 (5.0Ah)

252-8027 (7.5Ah)

252-8003 (2.5Ah Boost)

252-8007 (7.5Ah Boost)

252-8025

252-8037

252-8026

2. For best results, your battery and tool

should be stored, charged and used in a

location where the temperature is more

than 5°C (41°F) but less than 40°C (104°F).

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.

SAFETY INSTRUCTIONS

Page 8

OVERVIEW

17 19 21 23

Chuck Sleeve

Side Handle

Variable-Speed

Trigger Switch

Direction-Of-Rotation

Selector (Forward/

Center-Lock/Reverse)

LED Worklight

Torque-Adjustment Ring

Two-Speed Gearbox Switch

Impulse Button

Impulse Indicator

Bit Holder

Belt Clip

SPECIFICATIONS

Rated Voltage 20 V d.c.

No-load Speed 0-550/0-2,000 RPM

Chuck Capacity 1/2” (13mm)

Max. Torque 800 in. lbs.

Clutch 23+1 positions

Weight (without battery) 3 lb 8oz

Page 9

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

properly. Improper assembly of the battery

pack can cause damage to internal com-

ponents.

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.

OPERATION

ASSEMBLY

CONTENTS

Cordless drill/driver, bit, belt clip, screw,

side handle, 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.

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.

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.

Page 10

STORE THE BIT (FIG.3)

FIG. 3

Bit Holder

Your drill/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.

INSTALL/REMOVE THE SIDE

HANDLE (FIG.4)

FIG. 4

Side Handle

1. Align the side handle with either the left

or right mounting hole in the housing of

the tool.

2. Turn the side handle clockwise to

tighten the side handle.

3. Turn the side handle counterclockwise

to loosen and remove the side handle.

OPERATION

INSTALL THE BELT

CLIP (FIG.2)

FIG. 2

1. Align the rib of the clip with the hole on

the base of the drill/driver.

2. Insert the screw and tighten the screw

securely with a screwdriver. The belt clip

can be positioned on the left side of the

tool.

REMOVE THE BELT

CLIP (FIG.2)

1. Use a screwdriver to loosen the screw

that attaches the belt clip to the drill/

driver.

2. Remove the screw and the belt clip.

Bit

Mounting Holes

Screw

Belt Clip

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 drill/driver down.

ELECTRIC BRAKE

To stop the drill/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 the trigger

switch is released.

DIRECTION-OF-ROTATION SE-

LECTOR

(FORWARD/CENTERLOCK/

REVERSE) (FIG. 7)

FIG. 7

Reverse

The direction of bit rotation is reversible and

is controlled by a selector located above the

variable-speed trigger switch. With the drill/

driver held in normal operating position:

1. Position the direction-of-rotation

selector to the right of the tool for

reverse rotation.

LED WORKLIGHT (FIG.5)

FIG. 5

The LED worklight, located on the base

of the drill/driver, will illuminate when the

trigger switch is depressed before the drill/

driver is running. This provides additional

light on the surface of the workpiece. The

light will automatically turn off within 10

seconds after trigger is released.

VARIABLE-SPEED TRIGGER

SWITCH (FIG. 6)

FIG. 6

1. To turn the drill/driver ON, press the

variable-speed trigger switch.

2. To turn the drill/driver OFF, release the

variable-speed trigger switch.

LED Worklight

Variable-Speed

Trigger Switch

Forward

Direction-

Of-Rotation

Selector

Page 12

OPERATION

2. Position the direction-of-rotation

selector to the left of the tool for forward

rotation.

3. Setting the direction-of-rotation selector

in the OFF (center-lock) position helps

reduce the possibility of accidental

starting when not in use.

NOTICE: To prevent gear damage, always

allow the drill/driver to come to a complete

stop before changing the direction of rota-

tion.

NOTICE: The drill/driver will not run unless

the direction-of-rotation selector is en-

gaged fully to the left or right.

TWO-SPEED GEARBOX

(FIG. 8)

FIG. 8

High

The drill/driver has a two-speed gearbox

for drilling or driving at either low or high

speeds. A slide switch is located on the

top of the drill/ driver to select either low or

high speed. The required speed is adjusted

depending on the material and the working

conditions.

Use low speed for high-power and high-

torque applications and high speed for fast

drilling or driving applications.

Low

When using drill/driver in the low-speed

range, the speed will decrease and the drill/

driver will have more power and torque.

Use low speed for starting holes without

a center punch, drilling metals or plastic,

drilling ceramics, or in applications requiring

a higher torque.

High speed is better for drilling wood and

wood composites.

NOTICE: Avoid running the drill/driver at

high speed for extended periods of time.

Running at high speed under constant us-

age may cause the drill/driver to become

overheated.

NOTICE: Make sure that the two-speed

gearbox switch is fully adjusted at the front

or the back position.

NOTICE: Never adjust the speed while the

tool is running. Failure to obey this caution

could result in serious damage to the drill/

driver.

Page 13

OPERATION

The torque clutch can be adjusted to any

of 24 different settings (23 driving and 1

drilling). The higher the torque setting,

the more force the drill/driver produces to

turn an object in either low or high rotation

speed.

When using the drill/driver for different

driving applications, increase or decrease

the torque in order to help prevent damage

to the 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.

NOTICE: Do not change the torque setting

when the tool is running.

DRILL MODE (FIG. 11)

FIG. 11

Select the drill mode for drilling and other

heavy-duty applications.

To select drill mode, rotate the torque-

adjustment ring until the drill icon aligns with

the torque indicator.

KEYLESS CHUCK (FIG.9)

FIG. 9

Lock (Tighten)

The drill/driver has 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 order to LOCK

(tighten) or UNLOCK (release) the chuck

jaws on the bit.

WARNING:

Do not hold the chuck

with one hand and use the power of the

drill/driver 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

personal injury.

ADJUST THE TORQUE (FIG. 10)

FIG. 10

Unlock (Release)

Chuck Jaws

Keyless Chuck

To Increase Torque

To Decrease Torque

Torque-Adjustment

Ring

Drill Icon

Torque Indicator

Page 14

INSTALL THE BIT (FIG.13)

FIG. 13

Unlock

(Release)

1. Remove the battery pack from the drill/

driver.

2. Open the chuck jaws until the opening is

slightly larger than the bit you intend to

use and raise the front of the drill/driver

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 LOCK to close the chuck

jaws.

5. Tighten the chuck jaws securely on the

bit.

REMOVE THE BIT (FIG.13)

1. Remove the battery pack from the drill/

driver.

2. Open the chuck jaws.

3. Rotate the chuck in the direction of the

arrow marked UNLOCK to loosen the

chuck jaws.

4. Remove the bit.

OPERATION

IMPULSE MODE (FIG.12)

FIG. 12

1. Impulse mode creates a pulsating on-

off-on motor power cycle, which leads to

a short impulse of torque, together with

low speed, that can be more effective

than a pure rotational motion for certain

applications. The impulse mode can be

used to remove stubborn screws and

prevent the bit tip from walking when

drilling into smooth surfaces, such as

ceramic tiles and steel pipes.

2. Attach the battery to the tool.

3. Turn the direction-of-rotation selector

fully to the left or right and then press the

trigger switch to shine the LED worklight.

4. If the impulse indicator is off, you can

press the impulse button to turn on

the impulse indicator. If the impulse

indicator is on, it indicates that the

impulse mode has been turned.

WARNING:

Do not work for long

periods with the impulse mode activated

as the motor can be overheated.

NOTICE: The impulse mode has a memory

function. If the impulse mode is activated

and not turned off, you can continue to

use the mode directly next time.

NOTICE: With the impulse mode on, the

impulse indicator will be automatically turn

off about 1 minute after the trigger switch

is released.

Impulse

Indicator

Impulse

Button

Bit

Lock

(Tighten)

Keyless Chuck

Chuck Jaws

Page 15

DRILLING IN WOOD

For maximum performance, use high-

speed-steel (available separately) or brad-

point bits (available separately) 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 IN METAL

For maximum performance, use high-

speed-steel bits (available separately) for

metal or steel drilling. It’s recommended to

use the impulse mode to drill into the steel

pipes.

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 action.

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 drill/driver

• Wear the bearings

• Bend or burn bits

• Produce off-center or irregularly shaped

holes

OPERATION

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 drill/driver,

resulting in possibly serious personal

injury or damage to the chuck.

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.

DRILLING

1. Check that the direction-of-rotation

selector is at the forward 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 drill/driver ﬁrmly and place the

bit at the point to be drilled.

4. Depress the variable-speed trigger

switch to start the drill/driver.

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 action.

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.

Page 16

OPERATION

DRILLING IN CERAMIC TILES

For maximum performance, use carbide-

tipped masonry bits (available separately)

for ceramic tile drilling. It’s recommended

to use the impulse mode to drill into the

ceramic tiles.

1. Use just enough force on the drill to

keep it from bouncing excessively. Too

much force will cause slower drilling

speeds, overheating and a lower drilling

rate.

2. Do not exert side pressure on the bit

when drilling, as this will cause clogging

of the bit ﬂutes and a slower drilling

speed.

3. If the drill speed starts to drop off when

drilling deep holes, pull the bit partially

out of the hole with the tool still running

to help clear debris from the hole.

SCREWDRIVER OPERATION

1. Select the desired speed/torque range

to match the planned operation.

2. Attach the desired fastener accessory

into the chuck.

3. Make a few practice runs in a scrap

piece before working.

WARNING:

When servicing, use

only identical replacement parts. Use of

any other parts may create a hazard or

cause product damage.

WARNING:

To avoid serious

personal injury, always remove the battery

pack from the product when cleaning or

performing any maintenance.

WARNING:

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.

MAINTENANCE

WARNING:

Using compressed

air may be the most effective cleaning

method. Always wear safety goggles

when cleaning tools with compressed air.

Page 17

TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE SOLUTION

The drill/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 ﬁt the

sleeve.

Use a suitable bit.

Motor is overheating

The cooling vents may be

obstructed.

Clean and clear the vents.

Do not cover the vents with

your hand during operation

SAVE YOUR RECEIPTS

THIS WARRANTY IS VOID WITHOUT THEM

1/2" BRUSHLESS DRILL/DRIVER

WARRANTY

90-DAY MONEY BACK GUARANTEE:

This MASTERFORCE® brand power tool carries our 90-DAY Money Back

Guarantee. If you are not completely satisﬁed 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 speciﬁc 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 qualiﬁed 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

ﬁtness 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 at: 1-866-917-4374. (M-F 8:30am-5:00pm Est.)

05/2020

241-0355

1/4” Impact Driver

OPERATOR’S MANUAL

CAUTION:

To Reduce the Risk of Injury, User Must

Read and Understand the 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/Specications ................................................. Page 7

Assembly ............................................................. Page 8

Operation ............................................................. Page 9

Maintenance .......................................................... Page 13

Troubleshooting ....................................................... Page 14

Warranty ............................................................. Page 15

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)

W Watts Power

∿

Alternating current Type of current

�

Direct current Type or characteristic of current

No-load speed Rotational speed at no load

Class II construction Double insulated construction

.../min Per minute

Revolutions, strokes, surface speed

orbits, etc., per minute

Wear safety goggles

WARNING:

The operation of any

power tool can result in foreign objects

being thrown into your eyes, which can

result in severe eye damage. Before

beginning power tool operation, always

wear safety goggles or safety glasses

with side shields and a full-face shield

when needed. We recommend a Wide

Vision Safety Mask for use over eye-

glasses or standard safety glasses with

side shields. Always use eye protection

which is marked to comply with

ANSI Z87.1.

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, instruction, illustrations and

speciﬁcations provided with this power

tool.

Failure to follow all instructions listed below

may result in electric shock, re and/or seri-

ous 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

a) Keep work area clean and well lit.

Cluttered or dark areas invite accidents.

b) 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.

c) Keep children and bystanders away

while operating a power tool. Distractions

can cause you to lose control.

ELECTRICAL SAFETY

a) 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. Unmodied plugs

and matching outlets will reduce risk of

electric shock.

b) 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.

c) Do not expose power tools to rain or

wet conditions. Water entering a power

tool will increase the risk of electric shock.

d) 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.

e) 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.

f) 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

a) 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.

b) 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.

c) 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.

d) 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.

e) Do not overreach. Keep proper

footing and balance at all times. This

enables better control of the power tool in

unexpected situations.

f) Dress properly. Do not wear loose

clothing or jewelry. Keep your hair and

Page 5

SAFETY INSTRUCTIONS

clothing away from moving parts. Loose

clothes, jewelry or long hair can be caught

in moving parts.

g) 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.

h) 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

a) 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.

b) 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.

c) 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.

d) 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.

e) 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.

f) Keep cutting tools sharp and clean.

Properly maintained cutting tools with sharp

cutting edges are less likely to bind and are

easier to control.

g) 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.

h) 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.

SERVICE

a) 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.

SPECIFIC SAFETY WARNINGS

a) Hold power tools by insulated gripping

surfaces when performing an operation

where the cutting tool may contact hidden

wiring. Contact with a” live” wire will make

exposed metal parts of the tool live and

shock the operator.

b) Take protective measures when

dust can develop during working that

is harmful to one’s health, combustible

or explosive. Example: Some dusts are

regarded as carcinogenic. Wear a dust

mask and work with dust/chip extraction

when connectable.

c) Secure the workpiece. A workpiece

clamped with clamping devices or in a vice

is held more secure than by hand.

d) To reduce the risk of electric shock or

damage to the charger and battery, use

only the batteries and charger listed.

Page 6

SAFETY INSTRUCTIONS

Battery pack Charger

252-8027

252-8029

252-8030

252-8031

252-8034

252-8035

252-8003

252-8005

252-8007

252-8025

252-8026

252-8037

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 and cement

and other masonry products, and

• Arsenic and chromium from chemically-

treated lumber.

Your risk from these exposures varies,

depending on how often you do this type

of work. To reduce your exposure to these

chemicals: work in a well ventilated area,

and work with approved safety equipment,

such as those dust masks that are specially

designed to lter out microscopic particles.

Page 7

OVERVIEW

SPECIFICATIONS

No-load Speed I: 0-1,100 RPM

II: 0-2,000 RPM

III: 0-3,100 RPM

Impact Rate I: 0-1,250 BPM

II: 0-2,650 BPM

III: 0-3,500BPM

Torque I: 9,50 in.lb

II: 1,450 in.lb

III: 2,000 in.lb

Driver 1/4” Hex

Weight 2 lb. 14 oz (1.3 kg)

LED Worklight Ring

Mode-selector

Trigger Switch

Chuck

Direction-of-rotation

Selector

Belt Clip

Page 8

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, installing or removing

bits, cleaning, or when it is not in use.

Disconnecting the tool will prevent

accidental starting, which could cause

serious personal injury.

ASSEMBLY

CONTENTS

Cordless impact driver, bit holder, belt clip,bit

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 blower.

Page 9

TRIGGER SWITCH (FIG.2)

To turn the impact driver on, depress the

trigger switch.

To turn it off, release the trigger switch.

VARIABLE SPEED

The variable-speed trigger switch delivers

higher speed with increased trigger pressure

and lower speed with decreased trigger

pressure.

DIRECTION-OF-ROTATION SE-

LECTOR (FORWARD/CENTER-

LOCK/REVERSE) (FIG.3)

OPERATION

Direction-of-

rotation Selector

Trigger Switch

FIG. 2

Reverse

Forward

FIG. 3

TO ATTACH BATTERY PACK

(FIG. 1)

1. Make sure that the tool is switched off.

2. Align the raised rib on the battery pack

with the grooves on the bottom of the

impact driver, and then slide the battery

pack onto the tool.

NOTICE: Make sure that the latch on the

battery pack snaps into place and the bat-

tery pack is secured to the tool before op-

eration.

TO DETACH BATTERY PACK

(FIG. 1)

1. Make sure that the tool is switched off.

2. Depress the battery-release button

located on the front of the battery pack

to release the battery pack.

3. Pull the battery pack out and remove it

from the tool.

Attach

Battery-release

Button

Detach

FIG. 1

Page 10

The direction of rotation is reversible and is

controlled by a selector located above the

trigger switch. With the impact driver held

in normal operating position: position the

direction-of-rotation selector to the left of

the tool for forward rotation; position the

direction-of-rotation selector to the right

of the tool for reverse rotation. Setting the

switch in the OFF (center-lock) position

helps to reduce the possibility of accidental

starting when not in use.

NOTICE: To prevent gear damage, always

allow the impact driver to come to a com-

plete stop before changing the direction of

rotation.

NOTICE: The impact driver will not run un-

less the direction of the rotation selector is

engaged fully to the left or right.

MODE SELECTOR (FIG.4)

NOTICE: The impact driver is designed

with 3-speed and auto-stop functions;

these functions are available only when the

tool is operating in forward rotation.

NOTICE: The mode can only be changed

when the mode-indicator light is on. The

mode-indicator light will be off automati-

cally in about one minute.

1. Attach the battery pack to the impact

driver.

2. Position the direction-of-rotation

selector to the left of the tool for forward

rotation, and press the trigger switch to

turn on the mode-indicator light.

3. Press the mode selector to change the

speed: press once for low, press twice

for medium, and press a third time for

high.

4. To make the Auto-stop function

available, press and hold the mode

selector for three seconds: the auto-

stop indicator will shine. When a bolt/

nut is sufciently tightened, the tool

will automatically stop the impact

and rotation after approximately one

second.

5. To turn off the auto-stop function, press

and hold the mode selector for three

seconds again. The auto-stop indicator

is will turn off.

ELECTRIC BRAKE

The impact driver is equipped with an

electric brake. When the trigger switch

is released, the electric brake engages

automatically to quickly stop the rotation.

OPERATION

AUTOSTOP

Mode Selector

Mode Indicator

Auto-stop

Indicator

FIG. 4

Page 11

REMOVING THE BELT CLIP

1. Remove the battery from the tool.

2. Use a screwdriver to loosen the screw

that attaches the belt clip to the driver.

3. Remove the screw and the belt clip.

TO INSTALL THE BIT HOLDER

(FIG.7):

1. Remove the battery from the tool.

2. Align the rib of the bit holder with the

hole in the base of the impact driver.

3. Insert the screw (included) and securely

tighten the screw with a screwdriver

(not included). The bit holder can be

positioned on either side of the tool.

To remove the bit holder:

1. Remove the battery from the tool.

2. Use a screwdriver to loosen the screw

that attaches the bit holder to the

impact driver.

3. Remove the screw and the bit holder.

OPERATION

Bit Holder

Screw

FIG. 7

LED WORKLIGHT RING (FIG.5)

The LED worklight rings, located around

the shaft of the impact driver, will illuminate

when the trigger switch is depressed. This

provides additional light on the surface of the

workpiece for operation in lower-light areas.

The light will automatically turn off within 10

seconds after the trigger is released.

INSTALLING THE BELT CLIP

(FIG.6)

1. Remove the battery from the tool.

2. Align the rib of the belt clip with the hole

on the base of the driver.

3. Insert the screw and securely tighten

the screw with a screwdriver.

Belt Clip

FIG. 6

FIG. 5

Page 12

INSTALLING BITS (FIG.8)

1. Lock the trigger switch on the impact

driver by placing the direction-of-

rotation selector in the center position.

2. Insert the bit into the chuck. You will

hear a “click” to indicate that the bit is

securely installed in place.

3. Pull on the bit to check if it installed

securely.

REMOVING BITS

1. Lock the trigger switch on the impact

driver by placing the direction-of-

rotation selector in the center position.

2. Pull the sleeve towards the front of the

tool.

3. The bit should pop out from the chuck

automatically, if not, simply pull out the

bit.

TIGHTENING AND LOOSENING

SCREWS

1. Install the correct bit.

2. Apply just enough pressure to keep the

bit engaged on the screw.

3. Apply minimal pressure to the trigger

switch initially. Increase the speed only

when full control can be maintained.

TIGHTENING AND LOOSENING

NUTS AND BOLTS

Variable speed control must be used with

caution for driving nuts and bolts with

socket set attachments. The best technique

is to start slowly, increasing speed as the

nut or bolt runs down. Set the nut or bolt

snugly by slowing the tool to a stop. If this

procedure is not followed, the tool will have

a tendency to torque or twist in your hands

when the nut or bolt seats.

OPERATION

Sleeve

FIG. 8

Page 13

WARNING:

Always wear safety

goggles or safety glasses with side shields

during power tool operations, or when

blowing dust. If operation is dusty, also

wear a dust mask.

WARNING:

Do not at any time allow

brake ﬂuids, gasoline, petroleum-based

products, penetrating oils, etc. to come in

contact with plastic parts. Chemicals can

damage, weaken or destroy plastic, which

may result in serious personal injury.

MAINTENANCE

The tool may be cleaned most effectively

with compressed dry air. Always wear

safety goggles when cleaning tools with

compressed air.

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.

BEFORE EACH USE

1. Check for damaged, missing, or worn

parts.

2. Check for loose screws, misalignment

or binding of moving parts, or any other

condition that may affect the operation.

3. If abnormal vibration or noise occurs,

turn the tool off immediately and have

the problem corrected before further

use.

MAINTENANCE

Page 14

TROUBLESHOOTING

PROBLEM CAUSE SOLUTION

The impact driver does

not work.

The battery pack is depleted. Charge the battery pack.

The battery pack or impact

driver is too hot.

Turn off the impact driver and

allow the impact driver and

battery pack to cool.

SAVE YOUR RECEIPTS

THIS WARRANTY IS VOID WITHOUT THEM

1/4” 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 satised with your MASTERFORCE® brand