
OPERATOR’S MANUAL
80V 8" BRUSHLESS EDGER
270-1838
2700094MET
STB402
To Reduce The Risk Of Injury, User Must Read
CAUTION
And Understand Operator’s Manual. Save These Instructions For
Future Reference.

TABLE OF CONTENTS
Safety Symbols ........................................................................................................... Page 2
Safety Instructions ...................................................................................................... Page 3
Overview ..................................................................................................................... Page 7
Specications ............................................................................................................. Page 7
Assembly .................................................................................................................... Page 8
Operation .................................................................................................................... Page 9
Maintenance ............................................................................................................ Page 12
Troubleshooting ........................................................................................................ Page 13
Exploded view ........................................................................................................... Page 14
Note .......................................................................................................................... Page 15
Warranty ................................................................................................................... Page 18

Page 2
SAFETY SYMBOLS
Some of the following symbols may be used on this product. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the product better
and safer.
Symbol Name Designation / Explanation
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watts Power
min Minutes Time
Alternating Current Type of current
Direct Current Type or a characteristic of current
Class II Construction Double-insulated construction.
/min Per Minute
Revolutions, strokes, surface speed, orbits etc.,
per minute
Safety Alert Precautions that involve your safety.
Read The Operator’s Manual
To reduce the risk of injury user must read and
understand operator’s manual before using this
product.
Eye Protection
Always wear eye protection with side shields
marked to comply with ANSI Z87.1 when
operating this equipment.
Wet Conditions Alert
Do not expose the product to rain or moist
conditions.
Ricochet
Thrown objects can ricochet and result in
personal injury or property damage.
Sharp Blade
Danger - Keep hands and feet away from
blade.
Keep Bystanders Away Keep all bystanders at least 50 ft. (15m) away.

Page 3
SAFETY INSTRUCTIONS
The purpose of safety symbols is to attract our 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.
Failure to obey this safety warning CAN result in death or serious
injury to yourself or to others. Always follow the safety precautions to reduce the risk of
re, electric shock and personal injury.
WARNING
Failure to obey this safety warning MAY result in personal injury
to yourself or others or property damage. Always follow the safety precautions to
reduce the risk of re, electric shock and personal injury.
CAUTION
Failure to obey this warning WILL result in death or serious injury
to yourself or to others. Always follow the safety precautions to reduce the risk of fire,
electric shock and personal injury.
DANGER
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 power tool. Failure to follow all instructions listed below
may result in electric shock, re and/or serious personal injury.
WARNING
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION. May be used
in conjunction with other symbols or pictographs.

Page 4
SAFETY INSTRUCTIONS
IMPORTANT SAFETY
INSTRUCTIONS
READ ALL INSTRUCTIONS
BEFORE USING (THIS POWER
TOOL)
WARNING
Read and
understand all instructions before using
this product. Failure to follow all
instructions listed below may result in
electric shock, re, and/or serious
personal injury. When using an electrical
appliance, basic precautions should
always be followed, including the
following:
• Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases, or dust. Power
tools create sparks that may ignite the dust
or fumes.
• Do not allow children or untrained
individuals to use this unit.
• Don’t expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
• Do not handle battery or tool with wet
hands.
• Never allow children to operate the
equipment. Never allow adults to operate
the equipment without proper instruction.
• Always wear safety glasses with side
shields that are marked to comply with
ANSI Z87.1. Everyday glasses have only
impact resistant lenses. They are NOT
safety glasses. Following this rule will
reduce the risk of eye injury. Use face
mask if operation is dusty.
• Don’t use in the rain. Store indoors.
• Do not operate in poor lighting.
• Keep all parts of your body away from any
moving part.
• Prevent unintentional starting. Ensure
the switch is in the off-position before
connecting to battery pack, picking up
or carrying the appliance. Carrying the
appliance with your nger on the switch or
energizing appliance that have the switch
on invites accidents.
• Do not force tool. Use the correct tool
for your application. The correct tool will
do the job better and safer at the rate for
which it is designed.
• Do not operate the equipment while bare
foot or when wearing sandals or similar
lightweight footwear. Wear protective
footwear that will protect your feet and
improve your footing on slippery surfaces.
• Keep firm footing and balance. Do not
overreach. Overreaching can result in loss
of balance.
• Check Damaged Parts – Before further use
of the appliance, a guard or other part that
is damaged should be carefully checked to
determine that it will operate properly and
perform its intended function.
• Check for alignment of moving parts,
binding of moving parts, breakage of parts,
mounting and any other condition that
may affect its operation. A guard or other
part that is damaged should, be properly
repaired or replaced by an authorized
service center unless indicated elsewhere
in this manual.
• Keep guards in place and in working order.
• Keep hands and feet away from cutting
area.
• Do not allow to be used as a toy. Close
attention is necessary when used by or
near children.
• Do not use tool if switch does not turn it on
or off. Any tool that cannot be controlled
with the switch is dangerous and must be
repaired.
• Keep all bystanders, children, and pets at
least 50 ft. away.
• Do not operate this unit when you are tired,
ill, or under the inuence of alcohol, drugs,
or medication.
• Use only Masterforce Batteries: BAB726,
BAB727, BAB728, BAB729 or other BAB
series.
• Use only Masterforce Charger: CAB809 or
other CAB series.
• Do not put any object into openings. Do not
use with any opening blocked; keep openings
free.
• Check the work area before each use.
Remove all objects such as rocks, broken
glass, nails, wire, or string which can be
thrown or become entangled in the machine.

Page 5
• Use only identical manufacturer’s replacement
parts and accessories. Use of any other
parts may create a hazard or cause product
damage.
• Do not charge battery in the rain, or damp or
wet locations. Following this rule will reduce
the risk of electric shock.
• For household use only.
• Battery tools do not have to be plugged into
an electrical outlet; therefore, they are always
in operating condition. Be aware of possible
hazards when not using your battery tool or
when changing accessories. Following this
rule will reduce the risk of electric shock, re,
or serious personal injury.
• Remove or disconnect battery before
servicing, cleaning or removing material from
the gardening appliance.
• Use appliance only with specially designated
battery packs. Use of any other battery packs
may create a risk of injury and re.
• Store idle appliances - When not in use,
the edger should be stored indoors in a dry,
locked place out of the reach of children.
• Do not dispose of batteries in a re. The cell
may explode. Check with local codes for
possible special disposal instructions.
• Do not open or mutilate the batteries.
Released electrolyte is corrosive and may
cause damages to the eyes or skin. It may be
toxic if swallowed.
• Do not place battery tools or their batteries
near fire or heat. This will reduce the risk of
explosion and possibly injury.
• Batteries can explode in the presence of
a source of ignition, such as 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, ush with water immediately.
• Do not crush, drop or damage battery.
Do not use a battery 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.
• Exercise care in handling batteries in order
not to short the battery with conducting
materials such as rings, bracelets, and keys.
The battery or conductor may overheat and
cause burns.
• Under extreme usage or temperature
conditions, battery leakage may occur.
If liquid comes in contact with your skin,
SAFETY INSTRUCTIONS
wash immediately with soap and water,
then neutralize with lemon juice or vinegar.
If liquid gets into your eyes, flush them with
clean water for at least 10 minutes, then seek
immediate medical attention. Following this
rule will reduce the risk of serious personal
injury.
• If the charger power supply cord is damaged,
it must be replaced only by the manufacturer
or by an authorized service center to avoid
risk.
• Do not point the edger in the direction of
people or pets.
• When not in use, the edger should be stored
indoors in a dry, locked up place out of the
reach of children.
• Maintain tool with care. Keep all vents and
openings clean and clear of debris. Follow
instructions for proper maintenance. Do not
attempt to clear clogs from tool without rst
switching it off and removing the battery.
• Dress Properly – Do not wear loose
clothing or jewelry. They can be caught in
moving parts. Use of rubber gloves and
substantial footwear is recommended
when working outdoors. Wear protective
hair covering to contain long hair.
• Use the Correct Appliance – Do not use
appliance for any job except that for which
it is intended.
• 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.
• Do not expose a battery pack or appliance
to re or excessive temperature. Exposure
to fire or temperature above 265°F may
cause explosion.
• Follow all charging instructions and do
not charge the battery pack or appliance
outside of the temperature range specied
in the instructions. Charging improperly or
at temperatures outside of the specified
range may damage the battery and
increase the risk of re.
• Have servicing performed by a qualified
repair person using only identical
replacement parts. This will ensure that the
safety of the product is maintained.
• Do not modify or attempt to repair
the appliance or the battery pack (as
applicable) except as indicated in the

Page 6
SAFETY INSTRUCTIONS
instructions for use and care.
• Keep guards in place and in working order.
• Keep hands and feet away from cutting
area.
• Keep blades sharp.
PROPOSITION 65
This product contains a chemical known to
the state of California to cause cancer, birth
defects or other reproductive harm. Some dust
created by power sanding, sawing, grinding,
drilling, and other construction activities
contains chemicals known 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;
• Arsenic and chromium from chemically
treated lumber.
Your risk of exposure to these chemicals
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
dust masks that are specially designed to lter
out microscopic particles.
CHILD SAFETY
Tragic accidents can occur if the operator is
not aware of the presence of children.
• Keep children out of the working
area and under the watchful care of a
responsible adult.
• Do not allow children under the age
of 14 to operate this trimmer. Children
who are 14 years of age or older must
read and understand the operating
instructions and safety rules in this
manual and must be trained and
supervised by a parent.
• Stay alert and turn the trimmer off if a
child or any other person enters the
working area.
• Look behind and down for small
children before and while cutting
backwards.
• Use extreme care when approaching
blind corners, doorways, shrubs, trees,
or other objects that may obscure your
view of a child who may run into the
path of the trimmer.
SAVE THESE INSTRUCTIONS

Page 7
OVERVIEW
SPECIFICATIONS
Type Cordless, battery operated
Motor 80V Brushless
Blade length 8 in. (203 mm)
Speed 7000 ± 10% RPM
Weight (Without Battery) 10.8 lbs (4.9 kg)
The recommended ambient temperature range:
Item Temperature
Edger storage temperature range 32°F (0°C) - 113°F (45°C)
Edger operation temperature range 32°F (0°C) - 113°F (45°C)
Battery charging temperature range 39°F (4°C) - 104°F (40°C)
Charger operation temperature range 39°F (4°C) - 104°F (40°C)
Battery storage temperature range 32°F (0°C) - 113°F (45°C)
Battery discharging temperature range 32°F (0°C) - 113°F (45°C)

Page 8
ASSEMBLY
UNPACKING
This product requires assembly.
• Carefully remove the product and any
accessories from the box.
• Inspect the product carefully to make sure
no breakage or damage occurred during
shipping.
• Do not discard the packing material
until you have carefully inspected and
satisfactorily operated the product.
• If any parts are damaged or missing, please
call 1-844-MSTR4CE (844-678-7423) for
assistance.
AUXILIARY HANDLE
1. Remove the screws from the handle.
2. Attach the auxiliary handle and lower
clamp on the shaft.
3. Set the auxiliary handle to a comfortable
position.
4. Put the screws through the holes.
5. Tighten the auxiliary handle with the
screws.
FIG. 1
THE BATTERY PACK
• If the battery pack or charger is damaged,
replace the battery pack or the charger.
• Stop the machine and wait until the motor
stops before you install or remove the battery
pack.
• Read, know, and follow the instructions in
the battery and charger manuals.
To install the battery pack
1. Align the lift ribs on the battery pack with
the grooves in the battery compartment.
2. Push the battery pack into the battery
compartment until the battery pack locks
into place.
3. When you hear a click, the battery pack is
installed.
To remove the battery pack
1. Push and hold the battery release button
(1).
2. Remove the battery pack from the
machine.
FIG. 2

Page 9
ADJUST THE DEPTH OF CUT
1. Remove the battery pack.
2. Loosen the depth adjustment knob to
increase or decrease the depth.
3. Adjust the depth so that the blade barely
touches the ground when the machine is
held in a normal operating posture.
4. Tighten the depth adjustment knob.
5. Standing in a normal working position,
check the depth of cut again and correct if
necessary.
6. Replace the battery pack once all
adjustments are complete.
Read and under-
stand entire Operator's Manual for each
optional attachment used on this power
head and follow all warnings and instructions.
Failure to follow all instructions may result in
electric shock, re and/or serious personal
injury.
Do not allow familiarity with this product to
make you careless. Remember that a care-
less fraction of a second is sufcient to inict
serious injury.
Do not use any attachments or accessories
not recommended by the manufacturer of this
product. The use of attachments or acces-
sories not recommended can result in serious
personal injury.
LOCK-OUT SWITCH
The lock-out button reduces the possibility
of accidental start-up. The lock-out button is
located on the handle above the switch trig-
ger. The lock-out button must be depressed
before you pull the switch trigger. The lock
resets each time the trigger is released.
START / STOP THE TRIMMER
1. Ensure a fully charged battery is installed
into the edger.
2. To start the edger, press and hold the
lock-out button (1) and squeeze the switch
trigger (2).
OPERATION
WARNING
FIG. 1
FIG. 2
FIG. 3

Page 10
BLADE
If the blade is worn out, replace it with a new
one (not provided).
1. Insert a metal rod (e.g. a screwdriver) into
the hole on the shaft under the blade to x
the blade in place.
2. Remove the nut (2) by turning it
counterclockwise with the wrench (4)
provided.
3. Remove the washer (3).
4. Remove the old blade and replace it with a
new one.
5. Place the washer (3) on the blade.
6. Place the nut (2) on the washer (3) and
tighten it counterclockwise with the wrench
(4) provided.
OPERATION TIPS
Always hold the edger away from the body
keeping clearance between your body and
the edger. Any contact with the edger cutting
head while operating can result in serious
personal injury.
• Hold the edger
with your right hand
on the rear handle
and your left hand on the front handle.
• Keep a rm grip with both hands while in
operation.
• Edger should be held at a comfortable
position with the rear handle about hip
height.
• The edger will edge along sidewalks,
driveways, ower beds, curbs, and similar
areas.
• Cut at a steady pace. If the blade begins
to bog down, you are edging too fast; slow
your pace. Do not force the blade into the
ground.
• Light contact of the blade against the
sidewalk edge, curb, etc., is acceptable
and will not damage the edger.
• Best appearance is obtained when grass
is dry. Avoid edging in wet soil or wet grass
areas or the blade guard might clog and
result in an uneven edge. If the blade guard
becomes clogged, stop the edger, remove
the battery, and remove debris from the
blade guard.
WARNING
OPERATION
FIG. 5
FIG. 6
FIG. 4
FIG. 5
FIG. 6

Page 11
REPLACE THE SKID PLATE
1. Remove the screws with a Phillips Head
screwdriver (not included).
2. Replace with a new skid plate.
3. Tighten the screws.
REPLACE THE WHEEL
1. Remove the battery.
2. Remove the wing nut (1), washer (2), axle
sleeve (3), wheel (4), axle sleeve (3), rubber
washer (5) and wheel axle (6) orderly from
the wheel assembly.
3. Replace with the new wheel.
4. Insert the wheel axle (6) through the slot (7)
downward, then put the rubber washer (5),
axle sleeve (3), wheel (4), axle sleeve (3),
washer (2) and wing nut (1) orderly through
the wheel axle (6).
5. Tighten the wing nut (1).
OPERATION
FIG. 7
FIG. 8
FIG. 9

Page 12
MAINTENANCE
When servicing,
use only identical replacement parts. Use
of any other parts may create a hazard or
cause product damage.
Before inspecting, cleaning, or servicing the
machine, shut off motor, wait for all moving
parts to stop, and disconnect battery. Failure
to follow these instructions can result in
serious personal injury or property damage.
GENERAL 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 clean cloths to remove dirt, dust,
lubricant, grease, etc.
Do not at any
time let brake
uids, gasoline,
petroleum-based products, penetrating
lubricants, etc.,
come in contact with plastic parts.
Chemicals can damage, weaken or destroy
plastic which may result in serious personal
injury.
You can often make adjustments and repairs
described here. For other repairs, have
the power head serviced by an authorized
service dealer.
CLEANING THE POWER HEAD
• Stop the motor and remove the battery.
• Clean dirt and debris from the power head
using a damp cloth with a mild detergent.
Note: Do not use any strong detergents on
the plastic housing or the handle. They can
be damaged by certain aromatic oils such
as pine and lemon, and by solvents such as
kerosene.
STORING THE POWER HEAD
• Clean all foreign material from the product.
• Store it in a well-ventilated place that is
inaccessible to children.
• Keep away from corrosive agents such as
garden chemicals and de-icing salts.
Do not store the
Edger in sunlight, in an excessively warm
place, or near a furnace. The battery life will
be shortened.
WARNING
WARNING
WARNING

Page 13
PROBLEM POSSIBLE CAUSE SOLUTION
The machine does not
start when you push
the trigger.
No electrical contact
between the machine
and the battery pack.
1. Remove battery pack.
2. Check contact and install the battery pack
again.
The battery pack is
depleted.
Charge the battery pack.
The lock-out button
and trigger are not
pushed at the same
time.
1. Push the lock-out button and hold it.
2. Pull the trigger to start the machine.
Edger stops
during use.
Depth is set too low. Adjust the depth as shown in the instruction
manual.
Walking too fast. Do not force the edger through the grass.
TROUBLESHOOTING

Page 14
ITEM NO. PART NO. DESCRIPTION QTY
1
R0202487-00 Auxiliary handle assembly 1
1.1
R0201063-00 Screw 2
1.2
R0201064-00 Auxiliary handle 1
1.3
R0201065-00 Lower clamp 1
2
R0201933-00 Metal rod 1
3
R0201932-00 Wrench 1
4
R0200800-00 Blade assembly 1
5
R0201934-00 Guard assembly 1
6
R0202488-00 Wheel assembly 1

Page 15
NOTE

Page 16
NOTE

Page 17
NOTE

SAVE YOUR RECEIPTS
THIS WARRANTY IS VOID WITHOUT THEM
80V 8" BRUSHLESS EDGER
WARRANTY
4-YEAR LIMITED WARRANTY
This MASTERFORCE™ brand power tool carries our famous No Hassle 4-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 four (4) years from
the date of original purchase, simply bring the 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: 1-844-678-7423 (M-F 8am - 6pm)
Page 18

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© 2020 Menard, Inc., Eau Claire, WI 54703 12/2020
