Makita GRU07T User manual

INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
Cordless Grass Trimmer
Cortador Inalámbrico de Pasto
GRU07
IMPORTANT: Read Before Using.
IMPORTANTE: Lea antes de usar.

2ENGLISH
ENGLISH (Original instructions)
SPECIFICATIONS
Model: GRU07
Handle type Loop handle
No load speed 0 - 5,700 /min
Overall length
(without cutting tool and battery)
1,857 mm (73″)
Nylon cord diameter 2.7 mm (0.105″)
Applicable cutting tool and
cutting diameter
Nylon cutting head
(P/N 1911Y3-7)
450 mm (17-3/4″)
Rated voltage D.C. 36 V - 40 V max
Net weight *1 4.8 kg (10.6 lbs)
*2 5.5 - 6.7 kg (12.1 - 14.8 lbs)
Protection degree IPX4
• Due to our continuing program of research and development, the specications herein are subject to change
without notice.
• Specications may di󰀨er from country to country.
*1: Weight without the batteries, cutting tool, and harness.
*2: The lightest and heaviest combination of weight, according to EPTA-Procedure 01/2014. The weight may di󰀨er
depending on the attachment(s), including the battery cartridge(s).
Applicable battery cartridge and charger
Battery cartridge BL4020 / BL4025 / BL4040 / BL4050F* / BL4080F*
* : Recommended battery
Charger DC40RA / DC40RB / DC40RC
• Some of the battery cartridges and chargers listed above may not be available depending on your region of
residence.
WARNING: Only use the battery cartridges and chargers listed above. Use of any other battery cartridges
and chargers may cause injury and/or re.
Recommended cord connected power source
Portable power pack PDC01 / PDC1200
• The cord connected power source(s) listed above may not be available depending on your region of residence.
• Before using the cord connected power source, read instruction and cautionary markings on them.
SAFETY WARNINGS
General power tool safety warnings
WARNING Read all safety warnings, instruc-
tions, illustrations and specications 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 instruc-
tions 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 atmo-
spheres, such as in the presence of ammable
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. Unmodied plugs and matching outlets will
reduce risk of electric shock.

3ENGLISH
2. Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of elec-
tric shock if your body is earthed or grounded.
3. Do not expose power tools to rain or wet con-
ditions. 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 inter-
rupter (GFCI) protected supply. Use of a GFCI
reduces the risk of electric shock.
7. Power tools can produce electromagnetic
elds (EMF) that are not harmful to the user.
However, users of pacemakers and other similar
medical devices should contact the maker of their
device and/or doctor for advice before operating
this power tool.
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 inuence of drugs, alcohol or med-
ication. 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 o󰀨-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 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.
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.
9. Always wear protective goggles to protect
your eyes from injury when using power tools.
The goggles must comply with ANSI Z87.1 in
the USA.
It is an employer's responsibility to enforce the
use of appropriate safety protective equipment
by the tool operators and by other persons in
the immediate working area.
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 o󰀨. 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 adjust-
ments, 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 chil-
dren 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 a󰀨ect the power tool’s operation. If dam-
aged, 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, tak-
ing into account the working conditions and
the work to be performed. Use of the power tool
for operations di󰀨erent 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.
9. When using the tool, do not wear cloth work
gloves which may be entangled. The entangle-
ment of cloth work gloves in the moving parts may
result in personal injury.
Battery tool use and care
1. Recharge only with the charger specied 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 specically desig-
nated battery packs. Use of any other battery
packs may create a risk of injury and re.

4ENGLISH
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 termi-
nals together may cause burns or a re.
4. Under abusive conditions, liquid may be
ejected from the battery; avoid contact. If con-
tact accidentally occurs, ush 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 dam-
aged or modied. Damaged or modied batteries
may exhibit unpredictable behaviour resulting in
re, explosion or risk of injury.
6. Do not expose a battery pack or tool to re or
excessive temperature. Exposure to re or tem-
perature above 130 °C may cause explosion.
7. Follow all charging instructions and do not
charge the battery pack or tool outside the
temperature range specied in the instruc-
tions. Charging improperly or at temperatures
outside the specied range may damage the
battery and increase the risk of re.
Service
1. Have your power tool serviced by a qualied
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.
3. Follow instruction for lubricating and chang-
ing accessories.
4. Do not modify or attempt to repair the appli-
ance or the battery pack except as indicated in
the instructions for use and care.
Cordless grass trimmer safety
warnings
1. Do not use the machine in bad weather condi-
tions, especially when there is a risk of lightning.
This decreases the risk of being struck by lightning.
2. Thoroughly inspect the area for wildlife where
the machine is to be used. Wildlife may be
injured by the machine during operation.
3. Thoroughly inspect the area where the
machine is to be used and remove all stones,
sticks, wires, bones, and other foreign objects.
Thrown objects can cause personal injury.
4. Before using the machine, always visually
inspect to see that the cutter or blade and the
cutter or blade assembly are not damaged.
Damaged parts increase the risk of injury.
5. Follow instructions for changing accessories.
Improperly tightened blade securing nuts or bolts
may either damage the blade or result in it becom-
ing detached.
6. Wear eye, ear, head and hand protection.
Adequate protective equipment will reduce per-
sonal injury by ying debris or accidental contact
with the cutting line or blade.
7. While operating the machine, always wear
non-slip and protective footwear. Do not oper-
ate the machine when barefoot or wearing
open sandals. This reduces the chance of injury
to the feet from contact with the moving cutters or
lines.
8. While operating the machine, always wear long
trousers. Exposed skin increases the likelihood of
injury from thrown objects.
9. Keep bystanders away while operating the
machine. Thrown debris can result in serious
personal injury.
10. Always use two hands when operating the
machine. Holding the machine with both hands
will avoid loss of control.
11. Hold the machine by the insulated gripping
surfaces only, because the cutting line or
blade may contact hidden wiring. Cutting line or
blades contacting a "live" wire may make exposed
metal parts of the machine "live" and could give
the operator an electric shock.
12. Always keep proper footing and operate the
machine only when standing on the ground.
Slippery or unstable surfaces may cause a loss of
balance or control of the machine.
13. Do not operate the machine on excessively
steep slopes. This reduces the risk of loss of
control, slipping and falling which may result in
personal injury.
14. When working on slopes, always be sure of
your footing, always work across the face
of slopes, never up or down and exercise
extreme caution when changing direction. This
reduces the risk of loss of control, slipping and
falling which may result in personal injury.
15. Keep all parts of the body away from the cut-
ter, line or blade when the machine is operat-
ing. Before you start the machine, make sure
the cutter, line or blade is not contacting any-
thing. A moment of inattention while operating the
machine may result in injury to yourself or others.
16. Do not operate the machine above waist
height. This helps prevent unintended cutter or
blade contact and enables better control of the
machine in unexpected situations.
17. When cutting brush or saplings that are under
tension, be alert for spring back. When the
tension in the wood bres is released, the brush or
sapling may strike the operator and/or throw the
machine out of control.
18. Use extreme caution when cutting brush and
saplings. The slender material may catch the
blade and be whipped toward you or pull you o󰀨
balance.
19. Maintain control of the machine and do not
touch cutters, lines or blades and other haz-
ardous moving parts while they are still in
motion. This reduces the risk of injury from mov-
ing parts.
20. Carry the machine with the machine switched
o󰀨 and away from your body. Proper handling of
the machine will reduce the likelihood of acciden-
tal contact with a moving cutter, line or blade.

5ENGLISH
21. Only use replacement cutters, lines, cutting
heads and blades specied by the manufac-
turer. Incorrect replacement parts may increase
the risk of breakage and injury.
22. When clearing jammed material or servicing
the machine, make sure the switch is o󰀨 and
the battery pack is removed. Unexpected start-
ing of the machine while clearing jammed material
or servicing may result in serious personal injury.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or familiarity
with product (gained from repeated use) replace
strict adherence to safety rules for the subject
product. MISUSE or failure to follow the safety
rules stated in this instruction manual may cause
serious personal injury.
Important safety instructions
WARNING: When using electric gardening
appliances, basic safety precautions should
always be followed to reduce the risk of re,
electric shock, and personal injury, including the
following.
Read All Instructions
Failure to follow the warnings and instructions may
result in electric shock, re and/or serious injury.
SAVE THESE INSTRUCTIONS.
General instructions
1. Never allow people unfamiliar with these
instructions or children to use the machine.
Local regulations can restrict the age of the
operator. It is dangerous in the hands of untrained
users or children.
2. Be sure that anyone who is to operate the
string trimmer has rst read the instruction
manual.
3. Use the string trimmer with the utmost care
and attention.
4. Operate the string trimmer only if you are in
good physical condition. Perform all work
calmly and carefully. Use common sense
and keep in mind that the operator or user is
responsible for accidents or hazards occurring
to other people or their property.
5.
Never operate the string trimmer when tired, feel-
ing ill or under the inuence of alcohol or drugs.
6. Avoid accidentally starting:
— Ensure the switch is in the o󰀨 posi-
tion before installing the battery pack.
Inserting the battery pack into the string
trimmer with the switch on invites accidents.
— Carrying the string trimmer with your
nger on the switch invites accidents.
7. The string trimmer should be switched o󰀨
immediately if it shows any signs of abnormal
operation.
8. Don't force the tool. It will do the job better and
with less likelihood of a risk of injury at the rate for
which it was designed.
9. Don't overreach. Keep proper footing and
balance at all times.
10. Stay Alert - Watch what you are doing. Use
common sense. Do not operate appliance
when you are tired.
11. Store idle appliances indoors.
12. Keep ngers away from switch trigger when
not operating the tool and when moving from
one operating position to another.
Intended use of the tool
1. Use right tool. The cordless string trimmer
is only intended for cutting grass and light
weeds. It should not be used for any other
purpose such as edging or hedge cutting as
this may cause injury.
2. Use only the manufacturer’s recommended
accessories and attachments. Use of any other
accessories and attachments may increase the
risk of injury.
Personal protective equipment
1. Dress Properly. The clothing worn should be
functional and appropriate, i.e. it should be
tight-tting but not cause hindrance. Do not
wear loose clothing or jewelry. They can be
caught in moving parts. Use of thick leather
gloves and substantial footwear is recom-
mended when working outdoors. Wear protec-
tive hair covering to contain long hair.
2. In order to avoid either head, eye, hand or foot
injuries as well as to protect your hearing the
following protective equipment and protective
clothing must be used during operation of the
equipment.
Fig.1
3. Always wear a helmet where there is a risk of
falling objects. The protective helmet is to be
checked at regular intervals for damage and
is to be replaced at least every ve years. Use
only approved protective helmets.
4. Use safety glasses. The visor of the helmet (or
alternatively goggles) protects the face from
ying debris and stones. During operation
of the tool always wear goggles, or a visor to
prevent eye injuries.
5. Wear adequate noise protection equipment
to avoid hearing impairment (ear mu󰀨s , ear
plugs etc.).

6ENGLISH
Fig.2
6. Work overalls protect against injury from
ying stones and debris. It is strongly recom-
mended that the user wears work overalls.
7. Special gloves made of thick leather are part of
the prescribed equipment and must always be
worn during operation of the tool.
8. When using the tool, always wear sturdy shoes
with a nonslip sole. This protects against injuries
from ying debris and ensures a good footing.
9. Use a dust mask if operation is dusty.
Electrical and battery safety
1. Avoid dangerous environment. Don't use the
tool in damp or wet locations or expose it to
rain. Water entering the tool will increase the risk
of electric shock.
2. Prevent unintentional starting. Ensure the
switch is in the o󰀨-position before connecting
to battery pack, picking up or carrying the
machine. Carrying the machine with your nger
on the switch or energizing machine that have the
switch on invites accidents.
3. Disconnect the battery pack from the machine
before making any adjustments, changing
accessories, or storing machine. Such preven-
tive safety measures reduce the risk of starting the
machine accidentally.
4. Recharge only with the charger specied 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.
5. Use machines only with specically desig-
nated battery packs. Use of any other battery
packs may create a risk of injury and re.
6. 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 termi-
nals together may cause burns or a re.
7. Under abusive conditions, liquid may be
ejected from the battery; avoid contact. If con-
tact accidentally occurs, ush with water. If
liquid contacts eyes, seek medical help. Liquid
ejected from the battery may cause irritation or
burns.
8. Do not use a battery pack or machine that is
damaged or modied. Damaged or modied
batteries may exhibit unpredictable behaviour
resulting in re, explosion or risk of injury.
9. Do not expose a battery pack or machine to
re or excessive temperature. Exposure to re
or temperature above 130°C (265°F) may cause
explosion.
10. Follow all charging instructions and do not
charge the battery pack or machine outside of
the temperature range specied in the instruc-
tions. Charging improperly or at temperatures
outside of the specied range may damage the
battery and increase the risk of re.
11. Have servicing performed by a qualied repair
person using only identical replacement parts.
This will ensure that the safety of the product is
maintained.
12. Do not modify or attempt to repair the machine
or the battery pack except as indicated in the
instructions for use and care.
13. Do not dispose of the battery(ies) in a re.
The cell may explode. Check with local codes for
possible special disposal instructions.
14. Do not open or mutilate the battery(ies).
Released electrolyte is corrosive and may cause
damage to the eyes or skin. It may be toxic if
swallowed.
15. Do not charge battery in rain, or in wet
locations.
16. Make sure there are no electrical cables, water
pipes, gas pipes etc. that could cause a hazard
if damaged by use of the tool.
17. Do not replace the battery with wet hands.
18. Do not replace the battery in the rain.
19. Do not wet the terminal of battery with liquid
such as water, or submerge the battery. Do not
leave the battery in the rain, nor charge, use,
or store the battery in a damp or wet place. If
the terminal gets wet or liquid enters inside of bat-
tery, the battery may be short circuited and there is
a risk of overheat, re, or explosion.
20. After removing the battery from the tool or
charger, be sure to attach the battery cover to
the battery and store it in a dry place.
21. If the battery cartridge gets wet, drain the
water inside and then wipe it with a dry cloth.
Dry the battery cartridge completely in a dry
place before use.
22. Do not charge the battery outdoors.
23. Do not handle charger, including charger plug,
and charger terminals with wet hands.
Starting up the tool
Fig.3

7ENGLISH
1. Make sure that there are no children or other
people within a working range of 15 meters
(50 ft), also pay attention to any animals in the
working vicinity. Otherwise stop using the tool.
2. Before use always check that the tool is safe
for operation. Check the security of the nylon
cutting head and the guard and the switch
trigger/lever for easy and proper action. Check
for clean and dry handles and test the on/o󰀨
function of the switch.
3. Check damaged parts before further use of
the tool. 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, break-
age of parts, mounting, and any other condi-
tion that may a󰀨ect its operation. A guard or
other part that is damaged should be properly
repaired or replaced by our authorized ser-
vice center unless indicated elsewhere in this
manual.
4. Switch on the motor only when hands and feet
are away from the nylon cutting head.
5. Before starting make sure that the nylon cut-
ting head has no contact with hard objects
such as branches, stones etc. as the nylon
cutting head will revolve when starting.
6. Remove any adjusting key, wrench or blade
cover before turning the power tool on. An
accessory left attached to a rotating part of the
power tool may result in personal injury.
7. Make sure there are no electrical cables, water
pipes, gas pipes etc. that could cause a hazard
if damaged by use of the tool.
8. Do not use a cutting tool which is not recom-
mended by Makita.
9. Do not operate the tool in bad weather or if
there is a risk of lightning.
Method of operation
1. Only use the tool in good light and visibility.
During the winter season beware of slippery
or wet areas, ice and snow (risk of slipping).
Always ensure a safe footing.
2. Take care against injury to feet and hands from
the nylon cutting head.
3. Never cut above waist height.
4. Never stand on a ladder and run the tool.
5. Never climb up into trees to perform cutting
operation with the tool.
6. Never work on unstable surfaces.
7. Remove sand, stones, nails etc. found within
the working range. Foreign particles may dam-
age the nylon cutting head.
8. Should the nylon cutting head hit stones or
other hard objects, immediately switch o󰀨 the
motor and inspect the nylon cutting head.
9. Before commencing cutting, the nylon cutting
head must have reached full working speed.
10. During operation always hold the tool with
both hands. Never hold the tool with one hand
during use. Always ensure a safe footing.
11. The nylon cutting head has to be equipped
with the guard. Never run the tool with dam-
aged guards or without guards in place!
12. All protective equipment such as guards sup-
plied with the string trimmer must be used
during operation.
13. Except in case of emergency, never drop
or cast the tool to the ground or this may
severely damage the tool.
14. Never drag the tool on the ground when mov-
ing from place to place, the tool may become
damaged if moved in this manner.
15. Always remove the battery cartridge from the
tool:
— whenever leaving the tool unattended;
— before clearing a blockage;
— before checking, cleaning or working on
the tool;
— whenever the tool starts vibrating
abnormally;
— whenever transporting the tool.
16. Always ensure that the ventilation openings
are kept clear of debris.
17. Cutting elements continue to rotate after the
motor is switched o󰀨.
18. Do not operate power tools in explosive atmo-
spheres, such as in the presence of ammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
19. Take a rest to prevent loss of control caused
by fatigue. We recommend to take a 10 to
20-minute rest every hour.
20. Hold the power tool by insulated gripping
surfaces only, because the cutting tool may
contact hidden wiring. Cutting tool contacting a
“live” wire may make exposed metal parts of the
power tool “live” and could give the operator an
electric shock.
21. Do not use the tool on steep slopes.
22. The shoulder harness must be used during
operation, if supplied with the tool.
23. Do not start the tool when the cutting tool is
tangled with cut grass.
24. Before starting the tool, be sure that the cut-
ting tool is not touching the ground and other
obstacles such as a tree.
25. Always keep your hands, face, and clothes
away from the cutting tool when it is rotating.
Failure to do so may cause personal injury.
26. Only use the cutting tool that are marked with
a speed equal or higher than the speed marked
on the tool.
27. Do not touch the gear case during and imme-
diately after the operation. The gear case
becomes hot during operation and can cause burn
injury.
28. Do not use the tool when there is a risk of
lightning.
29. When you use the tool on muddy ground, wet
slope, or slippery place, pay attention to your
footing.
30. Avoid working in poor environment where
increased user fatigue is expected.

8ENGLISH
31. Do not use the tool in bad weather where visi-
bility is limited. Failure to do so may cause fall or
incorrect operation due to low visibility.
32. Do not submerge the tool into a puddle.
33. Do not leave the tool unattended outdoors in
the rain.
34. When wet leaves or dirt adhere to the suc-
tion mouth (ventilation window) due to rain,
remove them.
35. Do not use the tool in the snow.
36. Swing the tool evenly in a half-circle from
right to left, like using a scythe. This allows the
proper segment of the blade to contact plants to
be cut.
37. Check the cutting attachment frequently
during operation for cracks or damages.
Before the inspection, remove the battery
cartridge and wait until the cutting attachment
stops completely. Replace damaged cutting
attachment immediately, even if it has only
supercial cracks.
Vibration
1. People with poor circulation who are exposed
to excessive vibration may experience injury
to blood vessels or the nervous system.
Vibration may cause the following symptoms
to occur in the ngers, hands or wrists: "Falling
asleep" (numbness), tingling, pain, stabbing sen-
sation, alteration of skin color or of the skin. If any
of these symptoms occur, see a physician!
2. To reduce the risk of "white nger disease",
keep your hands warm during operation and
well maintain the tool and accessories.
Maintenance instructions
1. The condition of the nylon cutting head, pro-
tective devices must be checked before com-
mencing work.
2. Turn o󰀨 the motor and remove the battery
cartridge before carrying out maintenance,
replacing the nylon cutting head or nylon cord
and cleaning the tool.
3. Check for loose fasteners and damaged parts
such as cracks in the nylon cutting head.
4. Follow instructions for lubricating and chang-
ing accessories if applicable.
5. When not in use store the equipment in an
indoor dry location that is locked up or out of
children's reach.
6. Use only the manufacturer's recommended
replacement parts and accessories.
7. Inspect and maintain the tool regularly, espe-
cially before/after use. Have the tool repaired
only by our authorized service center.
8. Keep handles dry, clean and free from oil and
grease. Keep all cooling air inlets clear of
debris.
9. Always keep the tool in good working condi-
tion. Poor maintenance can result in inferior per-
formance and shorten the life of the tool.
10. Do not wash the tool with high pressure water.
11. When washing the tool, do not let water enter
the electrical mechanism such as battery,
motor, and terminals.
12. When storing the tool, avoid direct sunlight
and rain, and store it in a place where it does
not get hot or humid.
13. Perform inspection or maintenance in a place
where rain can be avoided.
14. After using the tool, remove the adhered dirt
and dry the tool completely before storing.
Depending on the season or the area, there is a
risk of malfunction due to freezing.
15. Before transporting the tool, turn it o󰀨 and
remove the battery cartridge.
Storage
1. Before storing the tool, perform full clean-
ing and maintenance. Remove the battery
cartridge.
2. Store the tool in a dry and high or locked loca-
tion out of reach of children.
3. Do not prop the tool against something, such
as a wall. Otherwise it may fall suddenly and
cause an injury.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or familiarity
with product (gained from repeated use) replace
strict adherence to safety rules for the subject
product. MISUSE or failure to follow the safety
rules stated in this instruction manual may cause
serious personal injury.
WARNING: Use of this product can create
dust containing chemicals which may cause
respiratory or other illnesses. Some examples of
these chemicals are compounds found in pesti-
cides, insecticides, fertilizers and herbicides.
Your risk from these exposures varies, depend-
ing 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.
Symbols
The followings show the symbols used for tool.
volts
direct current
no load speed
revolutions or reciprocation per minute

9ENGLISH
Important safety instructions for
battery cartridge
1. Before using battery cartridge, read all instruc-
tions and cautionary markings on (1) battery
charger, (2) battery, and (3) product using
battery.
2. Do not disassemble or tamper with the battery
cartridge. It may result in a re, excessive heat,
or explosion.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them
out with clear water and seek medical atten-
tion right away. It may result in loss of your
eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any con-
ductive material.
(2) Avoid storing battery cartridge in a con-
tainer with other metal objects such as
nails, coins, etc.
(3) Do not expose battery cartridge to water
or rain.
A battery short can cause a large current
ow, overheating, possible burns and even a
breakdown.
6. Do not store and use the tool and battery car-
tridge in locations where the temperature may
reach or exceed 50 °C (122 °F).
7. Do not incinerate the battery cartridge even if
it is severely damaged or is completely worn
out. The battery cartridge can explode in a re.
8. Do not nail, cut, crush, throw, drop the battery
cartridge, or hit against a hard object to the
battery cartridge. Such conduct may result in a
re, excessive heat, or explosion.
9. Do not use a damaged battery.
10. The contained lithium-ion batteries are subject
to the Dangerous Goods Legislation require-
ments.
For commercial transports e.g. by third parties,
forwarding agents, special requirement on pack-
aging and labeling must be observed.
For preparation of the item being shipped, consult-
ing an expert for hazardous material is required.
Please also observe possibly more detailed
national regulations.
Tape or mask o󰀨 open contacts and pack up the
battery in such a manner that it cannot move
around in the packaging.
11. When disposing the battery cartridge, remove
it from the tool and dispose of it in a safe
place. Follow your local regulations relating to
disposal of battery.
12. Use the batteries only with the products
specied by Makita. Installing the batteries to
non-compliant products may result in a re, exces-
sive heat, explosion, or leak of electrolyte.
13. If the tool is not used for a long period of time,
the battery must be removed from the tool.
14. During and after use, the battery cartridge may
take on heat which can cause burns or low
temperature burns. Pay attention to the han-
dling of hot battery cartridges.
15. Do not touch the terminal of the tool imme-
diately after use as it may get hot enough to
cause burns.
16. Do not allow chips, dust, or soil stuck into the
terminals, holes, and grooves of the battery
cartridge. It may cause heating, catching re,
burst and malfunction of the tool or battery car-
tridge, resulting in burns or personal injury.
17. Unless the tool supports the use near
high-voltage electrical power lines, do not use
the battery cartridge near high-voltage electri-
cal power lines. It may result in a malfunction or
breakdown of the tool or battery cartridge.
18. Keep the battery away from children.
SAVE THESE INSTRUCTIONS.
CAUTION: Only use genuine Makita batteries.
Use of non-genuine Makita batteries, or batteries that
have been altered, may result in the battery bursting
causing res, personal injury and damage. It will
also void the Makita warranty for the Makita tool and
charger.
Tips for maintaining maximum
battery life
1. Charge the battery cartridge before completely
discharged. Always stop tool operation and
charge the battery cartridge when you notice
less tool power.
2. Never recharge a fully charged battery car-
tridge. Overcharging shortens the battery
service life.
3. Charge the battery cartridge with room tem-
perature at 10 °C - 40 °C (50 °F - 104 °F). Let
a hot battery cartridge cool down before
charging it.
4. When not using the battery cartridge, remove
it from the tool or the charger.
5. Charge the battery cartridge if you do not use
it for a long period (more than six months).

10 ENGLISH
PARTS DESCRIPTION
12
43
5
6
14
13
12
7
8
9
10
11
Fig.4
1High-torque lamp 2Reverse lamp 3Caution lamp 4Main power lamp
5Reverse / high-torque
button
6Main power button 7Battery cartridge 8Switch trigger
9Hanger 10 Handle 11 Guard 12 Adjusting lever
13 Lock-o󰀨 lever 14 Shoulder harness ----

11 ENGLISH
FUNCTIONAL DESCRIPTION
WARNING: Always be sure that the tool is
switched o󰀨 and the battery cartridge is removed
before adjusting or checking function on the tool.
Failure to switch o󰀨 and remove the battery cartridge
may result in serious personal injury from accidental
start-up.
Installing or removing battery cartridge
CAUTION: Always switch o󰀨 the tool before
installing or removing of the battery cartridge.
CAUTION: Hold the tool and the battery car-
tridge rmly when installing or removing battery
cartridge. Failure to hold the tool and the battery
cartridge rmly may cause them to slip o󰀨 your hands
and result in damage to the tool and battery cartridge
and a personal injury.
1 1
2
3
Fig.5
► 1. Red indicator 2. Button 3. Battery cartridge
To remove the battery cartridge, slide it from the tool
while sliding the button on the front of the cartridge.
To install the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip
it into place. Insert it all the way until it locks in place
with a little click. If you can see the red indicator as
shown in the gure, it is not locked completely.
CAUTION: Always install the battery cartridge
fully until the red indicator cannot be seen. If not,
it may accidentally fall out of the tool, causing injury to
you or someone around you.
CAUTION: Do not install the battery cartridge
forcibly. If the cartridge does not slide in easily, it is
not being inserted correctly.
Tool / battery protection system
The tool is equipped with a tool/battery protection
system. This system automatically cuts o󰀨 power to
the motor to extend tool and battery life. The tool will
automatically stop during operation if the tool is placed
under one of the following conditions:
Caution lamp Status
Color On Blinking
Green Overload
Red (tool) / (battery) Overheat
Red Over
discharge
Overload protection
If the tool gets into one of the following situation, the
tool automatically stops and the caution lamp starts
blinking in green:
— The tool is overloaded by entangled weeds or
other debris.
— The cutting tool is locked.
— The main power button is turned on while the
switch trigger is being pulled.
In this situation, release the switch trigger and remove
entangled weeds or debris if necessary. After that, pull
the switch trigger again to resume.
CAUTION: If you need to remove the entan-
gled weeds on the tool or release the locked
cutting tool, be sure to turn the tool o󰀨 before you
start.
Overheat protection for tool or
battery
If the tool or battery cartridge is overheated, the tool
stops automatically. When the tool is overheated, the
caution lamp lights up in red. When the battery cartridge
is overheated, the caution lamp blinks in red. Let the
tool and/or battery cool down before turning the tool on
again.
Overdischarge protection
When the battery capacity becomes low, the tool stops
automatically and the caution lamp starts blinking in red.
If the tool does not operate even when the switches are
operated, remove the battery cartridge from the tool and
charge it.

12 ENGLISH
Indicating the remaining battery
capacity
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for a few seconds.
1
2
Fig.6
► 1. Indicator lamps 2. Check button
Indicator lamps Remaining
capacity
Lighted O󰀨 Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
NOTE: Depending on the conditions of use and the
ambient temperature, the indication may di󰀨er slightly
from the actual capacity.
NOTE: The rst (far left) indicator lamp will blink when
the battery protection system works.
Main power switch
To turn on the tool, press the main power button. To turn
o󰀨 the tool, press and hold the main power button until
the main power lamp goes o󰀨.
2
1
Fig.7
► 1. Main power lamp 2. Main power button
NOTE: The tool will automatically turned o󰀨 if it is left
without any operations for a certain period of time.
Switch action
WARNING: For your safety, this tool is
equipped with lock-o󰀨 lever which prevents the
tool from unintended starting. NEVER use the tool
if it runs when you simply pull the switch trigger
without pressing the lock-o󰀨 lever. Return the tool
to our authorized service center for proper repairs
BEFORE further usage.
WARNING: NEVER tape down or defeat pur-
pose and function of lock-o󰀨 lever.
CAUTION: Before installing the battery car-
tridge into the tool, always check to see that the
switch trigger actuates properly and returns to
the "OFF" position when released. Operating a tool
with a switch that does not actuate properly can lead
to loss of control and serious personal injury.
CAUTION: Never put your nger on the main
power button and switch trigger when carrying
the tool. The tool may start unintentionally and cause
injury.
NOTICE: Do not pull the switch trigger hard with-
out pressing the lock-o󰀨 lever. This can cause
switch breakage.

13 ENGLISH
To prevent the switch trigger from being accidentally
pulled, a lock-o󰀨 lever is provided. To start the tool,
depress the lock-o󰀨 lever and pull the switch trigger.
Release the switch trigger to stop.
2
1
Fig.8
► 1. Lock-o󰀨 lever 2. Switch trigger
Speed adjusting
You can adjust the tool speed using the adjusting lever.
To adjust the tool speed, move the lever while depress-
ing the lock-o󰀨 lever and pulling the switch trigger. To
increase the speed, move the lever toward you. To
decrease the speed, move the lever forward. When the
adjusting lever is in the most forward position, the tool
stops.
1
Fig.9
► 1. Adjusting lever
Reverse button
WARNING: Switch o󰀨 the tool and remove
the battery cartridge before you remove entan-
gled weeds or debris which the reverse rotation
function can not remove. Failure to switch o󰀨 and
remove the battery cartridge may result in serious
personal injury from accidental start-up.
This tool has the reverse button to change the direction of rota-
tion. By changing the direction of rotation, you can change the
direction in which the cut grass is own. The reverse button is
also used for removing weeds and debris entangled in the tool.
To reverse the rotation, press the reverse / high-torque but-
ton when the cutting tool is stopped. The reverse lamp lights
up. The cutting tool rotates in reverse direction when you
pull the switch trigger while depressing the lock-o󰀨 lever.
To return to regular rotation, press the reverse / high-
torque button when the cutting tool is stopped.
2
1
Fig.10
► 1. Reverse lamp 2. Reverse / high-torque button
NOTE: If you press the reverse / high-torque button
while the cutting tool is still rotating, the tool comes to
stop and to be ready for reverse rotation.
High-torque button
You can use the tool in the high-torque mode. In the
high-torque mode, the tool speed is less likely to
decrease than in the normal mode when the load of the
tool is large.
To use the tool in the high-torque mode, press and hold
the reverse / high-torque button. The high-torque lamp
lights up. To return to the normal mode, press and hold
the reverse / high-torque button again.
2
1
Fig.11
► 1. High-torque lamp 2. Reverse / high-torque button

14 ENGLISH
Electric brake
This tool is equipped with an electric brake. If the tool
consistently fails to quickly stop after the switch trigger
is released, have the tool serviced at our service center.
CAUTION: This brake system is not a sub-
stitute for the guard. Never use the tool without
the guard. An unguarded cutting tool may result in
serious personal injury.
Electronic function
Constant speed control
The speed control function provides the constant rota-
tion speed regardless of load conditions.
Soft start feature
Soft start because of suppressed starting shock.
ASSEMBLY
WARNING: Always be sure that the tool is
switched o󰀨 and battery cartridge is removed
before carrying out any work on the tool. Failure to
switch o󰀨 and remove the battery cartridge may result
in serious personal injury from accidental start-up.
WARNING: Never start the tool unless it is
completely assembled. Operation of the tool in a
partially assembled state may result in serious per-
sonal injury from accidental start-up.
Installing the handle
1. Attach the upper and lower clamps on the damper.
2. Put the handle on the upper clamp and x it with
hex socket head bolts as illustrated.
1
2
3
45
Fig.12
► 1. Hex socket head bolt 2. Handle 3. Upper clamp
4. Damper 5. Lower clamp
Hex wrench storage
CAUTION: Be careful not to leave the hex
wrench inserted in the tool head. It may cause
injury and/or damage to the tool.
When not in use, store the hex wrench as illustrated to
keep it from being lost.
1
Fig.13
► 1. Hex wrench
Installing the cutting tool
CAUTION: Always use the supplied wrenches
to remove or to install the cutting tool.
CAUTION: Be sure to remove the hex wrench
inserted into the tool head after installing the
cutting tool.
NOTE: The type of the cutting tool(s) supplied as
the standard accessory varies depending on the
countries. The cutting tool is not included in some
countries.
NOTE: Turn the tool upside down so that you can
replace the cutting tool easily.

15 ENGLISH
Nylon cutting head
NOTICE: Be sure to use genuine Makita nylon
cutting head.
1. Insert the hex wrench through the hole in the gear
case to lock the spindle. Rotate the spindle until the hex
wrench is fully inserted. Remove the nut by turning it
clockwise with the box wrench.
1
2
Fig.14
► 1. Nut 2. Hex wrench
2. Remove the spool holder by pressing the claws.
1
2
Fig.15
► 1. Spool holder 2. Claw
3. Remove the spool from the spool holder by hold-
ing the nylon cord with your ngers and thumb, and
then hook both sides of the nylon cord to the notches of
the spool.
1
2
3
Fig.16
► 1. Spool 2. Spool holder 3. Notch
4. Insert the hex wrench through the hole in the gear
case to lock the spindle. Attach the spool holder to the
spindle, and then tighten the nut by turning it counter-
clockwise with the box wrench.
1
2
3
Fig.17
► 1. Nut 2. Spool holder 3. Hex wrench
NOTE: The recommended tightening torque is 20 to
30 N•m.

16 ENGLISH
5. Attach the spool to the spool holder, and then set
both sides of the nylon cord to the eyelets of the spool
holder. Attach the spool cover to the spool holder.
1
2
3
4
Fig.18
► 1. Spool 2. Spool holder 3. Eyelet 4. Spool cover
6. Remove the hex wrench from the gear case.
Correct combination of the cutting
tool and the guard
CAUTION: Always use the correct combina-
tion of cutting tool and the guard. A wrong combi-
nation may not protect you from the cutting tool, ying
debris, and stones. It can also a󰀨ect the balance of
the tool and result in an injury.
Cutting tool Guard
Nylon cutting head
Installing the guard
WARNING: Never use the tool without the
guard illustrated in place. Failure to do so can
cause serious personal injury.
CAUTION: Take care not to injure yourself on
the cutter for cutting the nylon cord.
Attach the guard to the clamp using bolts.
1
2
3
Fig.19
► 1. Clamp 2. Guard 3. Cutter
OPERATION
Attaching the shoulder harness
WARNING: Be extremely careful to maintain
control of the tool at all times. Do not allow the
tool to be deected toward you or anyone in the
work vicinity. Failure to keep control of the tool
could result in serious injury to the bystander and the
operator.
CAUTION: Always use the shoulder harness
attached to the tool. Before operation, adjust the
shoulder harness according to the user size to
prevent fatigue.
CAUTION: Before operation, make sure that
the shoulder harness is properly attached to the
hanger on the tool.
CAUTION: When you use the tool in combi-
nation of the backpack-type power supply such
as portable power pack, do not use the shoulder
harness included in the tool package, but use the
hanging band recommended by Makita.
If you put on the shoulder harness included in the
tool package and the shoulder harness of the back-
pack-type power supply at the same time, removing
the tool or backpack-type power supply is di󰀩cult in
case of an emergency, and it may cause an accident
or injury. For the recommended hanging band, ask
Makita Authorized Service Centers.

17 ENGLISH
1. Clasp the hook on the shoulder harness to tool's
ring and hanger.
1
2
3
Fig.20
► 1. Ring 2. Hook 3. Hanger
2. Put on the shoulder harness on your left shoulder.
Adjust the shoulder harness to a comfortable working
position.
Fig.21
The shoulder harness features a means of quick
release. Simply squeeze the sides of the buckle while
holding the tool to release the tool from the shoulder
harness.
1
Fig.22
► 1. Buckle
Correct handling of the tool
WARNING: Always position the tool on your
right-hand side. Correct positioning of the tool allows
for maximum control and will reduce the risk of seri-
ous personal injury.
WARNING: Be extremely careful to maintain
control of the tool at all times. Do not allow the
tool to be deected toward you or anyone in the
work vicinity. Failure to keep control of the tool
could result in serious injury to the bystander and the
operator.
WARNING: To avoid accident, leave more
than 15m (50 ft) distance between operators when
two or more operators work in one area. Also,
arrange a person to observe the distance between
operators. If someone or an animal enters the
working area, immediately stop the operation.
CAUTION: If the cutting tool accidentally
impacts a rock or hard object during operation,
stop the tool and inspect for any damage. If the
cutting tool is damaged, replace it immediately.
Use of a damaged cutting tool may result in serious
personal injury.
Correct positioning and handling allow optimum control
and reduce the risk of injury.
Fig.23
When using a nylon cutting head (bump & feed
type)
The nylon cutting head is a dual string trimmer head
provided with a bump & feed mechanism.
To feed out the nylon cord, tap the cutting head against
the ground while rotating.
1
Fig.24
► 1. Most e󰀨ective cutting area

18 ENGLISH
NOTICE: The bump feed will not operate prop-
erly if the nylon cutting head is not rotating.
NOTE: If the nylon cord does not feed out while
tapping the head, rewind/replace the nylon cord
by following the procedures in the section for the
maintenance.
MAINTENANCE
WARNING: Always be sure that the tool is
switched o󰀨 and battery cartridge is removed
before attempting to perform inspection or main-
tenance on the tool. Failure to switch o󰀨 and remove
the battery cartridge may result in serious personal
injury from accidental start-up.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
Cleaning the tool
Clean the tool by wiping o󰀨 dust, dirt, or cut o󰀨 grass
with a dry cloth or one dipped in soapy water and wrung
out. To avoid overheating of the tool, be sure to remove
the cut o󰀨 grass or debris adhered to the vent of the
tool.
Replacing the nylon cord
WARNING: Use only the nylon cord with
diameter specied in this instruction manual.
Never use heavier line, metal wire, rope or the
like. Failure to do so may cause damage to the tool
and result in serious personal injury.
WARNING: Always remove the nylon cutting
head from the tool when replacing the nylon cord.
WARNING: Make sure that the cover of the
nylon cutting head is secured to the housing
properly as described below. Failure to properly
secure the cover may cause the nylon cutting head to
y apart resulting in serious personal injury.
Replace the nylon cord if it is not fed any more. The
method of replacing the nylon cord varies depending on
the type of the nylon cutting head.

19 ENGLISH
121-SP
1
2
4
3
5
6
3 m (9 ft)
100 mm
(3-15/16″)
Fig.25

20 ENGLISH
TROUBLESHOOTING
Before asking for repairs, conduct your own inspection rst. If you nd a problem that is not explained in the manual,
do not attempt to dismantle the tool. Instead, ask Makita Authorized Service Centers, always using Makita replace-
ment parts for repairs.
State of abnormality Probable cause (malfunction) Remedy
Motor does not run. Battery cartridge is not installed. Install the battery cartridge.
Battery problem (under voltage) Recharge the battery cartridge. If recharging is not
e󰀨ective, replace battery cartridge.
The drive system does not work
correctly.
Ask your local authorized service center for repair.
Motor stops running after a little use. Battery's charge level is low. Recharge the battery cartridge. If recharging is not
e󰀨ective, replace battery cartridge.
Overheating. Stop using of tool to allow it to cool down.
The tool does not reach maximum
RPM.
Battery cartridge is installed improperly. Install the battery cartridge as described in this
manual.
Battery power is dropping. Recharge the battery cartridge. If recharging is not
e󰀨ective, replace battery cartridge.
The drive system does not work
correctly.
Ask your local authorized service center for repair.
Cutting tool does not rotate:
stop the machine immediately!
Foreign object such as a branch is
jammed between the guard and the
cutting tool.
Remove the foreign object.
Cutting tool is loosely attached. Tighten the cutting tool securely.
The drive system does not work
correctly.
Ask your local authorized service center for repair.
Abnormal vibration:
stop the machine immediately!
Broken, bent or worn cutting tool Replace the cutting tool.
Cutting tool is loosely attached. Tighten the cutting tool securely.
The drive system does not work
correctly.
Ask your local authorized service center for repair.
Cutting tool and motor cannot stop:
Remove the battery immediately!
Electric or electronic malfunction. Remove the battery cartridge and ask your local
authorized service center for repair.
OPTIONAL ACCESSORIES
WARNING: Only use the recommended
accessories or attachments indicated in this man-
ual. The use of any other accessory or attachment
may result in serious personal injury.
CAUTION: These accessories or attachments
are recommended for use with your Makita tool
specied in this manual. The use of any other
accessories or attachments might present a risk of
injury to persons. Only use accessory or attachment
for its stated purpose.
If you need any assistance for more details regard-
ing these accessories, ask your local Makita Service
Center.
• Nylon cutting head
• Nylon cord (cutting line)
• Makita genuine battery and charger
NOTE: Some items in the list may be included in the
tool package as standard accessories. They may
di󰀨er from country to country.
MAKITA LIMITED WARRANTY
Please refer to the annexed warranty sheet for the
most current warranty terms applicable to this product.
If annexed warranty sheet is not available, refer to the
warranty details set forth at below website for your
respective country.
United States of America: www.makitatools.com
Canada: www.makita.ca
Other countries: www.makita.com