Makita RU03 Instruction Manual
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
Cordless Grass Trimmer
Cortador Inalámbrico de Pasto
RU03
IMPORTANT: Read Before Using.
IMPORTANTE: Lea antes de usar.
ENGLISH (Original instructions)
SPECIFICATIONS
Model: RU03
No load speed
(without cutting tool)
Overall length
(without cutting tool)
Nylon cord diameter 1.65 mm
Applicable cutting tool and
cutting diameter
Rated voltage D.C. 10.8 V - 12 V max
Standard battery cartridge BL1016 / BL1021B / BL1041B
Charger DC10SB / DC10WD
Net weight 1.9 - 2.1 kg
• Due to our continuing program of research and development, the specications herein are subject to change
without notice.
• Specications and battery cartridge may differ from country to country.
• The weight may differ depending on the attachment(s), including the battery cartridge. The lightest and heaviest combination, according to EPTA-Procedure 01/2014, are shown in the table.
SAFETY WARNINGS
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. Do not allow persons unfamiliar with the string
trimmer or these instructions to operate the
tool. String trimmers are dangerous in the hands
of untrained users.
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.
Nylon cutting head
(P/N 198852-2)
Plastic blade head
(P/N 198847-5)
5. Never operate the string trimmer when tired,
feeling ill or under the inuence of alcohol or
drugs.
6. Avoid accidentally starting:
— Ensure the switch is in the off 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 off
immediately if it shows any signs of abnormal
operation.
8. Disconnect the battery from the string trimmer
before making any adjustments, changing
accessories or storing. Such preventive safety
measures reduce the risk of starting the sting
trimmer accidentally.
9. 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.
10. Don't overreach. Keep proper footing and
balance at all times.
11. Stay Alert - Watch what you are doing. Use
common sense. Do not operate appliance
when you are tired.
12. Store idle appliances indoors.
13. Keep ngers away from switch trigger when
not operating the tool and when moving from
one operating position to another.
2 ENGLISH
10,000 /min
835 - 1,185 mm
(32-7/8 - 46-3/4″)
(1/16″)
260 mm
(10-1/4″)
230 mm
(9″)
(4.2 - 4.4 lbs)
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 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 recommended when working outdoors. Wear protective 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.
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 muffs , ear
plugs etc.).
6. Work overalls protect against injury from
ying stones and debris. It is strongly recommended 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. Recharge only with the charger specied by
the manufacturer. A charger that is suitable for
one type of battery pack may create a risk of re
when used with another battery pack.
3. Use power tools only with specically desig-
nated battery packs. Use of any other battery
packs may create a risk of injury and re.
4. 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.
5.
Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact accidentally occurs, ush with water. If liquid contacts eyes, seek medical help. Liquid ejected from
the battery may cause irritation or burns.
6. Do not dispose of the battery(ies) in a re.
The cell may explode. Check with local codes for
possible special disposal instructions.
7.
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.
8.
Do not charge battery in rain, or in wet locations.
Starting up the tool
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/off function of the switch.
3 ENGLISH
Check damaged parts before further use of
3.
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, 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 our authorized service 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 cutting 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.
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 damage the nylon cutting head.
8. Should the nylon cutting head hit stones or
other hard objects, immediately switch off 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 damaged guards or without guards in place!
12. All protective equipment such as guards supplied 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 moving 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 off.
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 attachment may contact
hidden wiring. Cutting attachments 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.
When performing the edging operation, hold and
move the tool as instructed in this manual to
prevent an injury due to ying debris or stones.
23. The shoulder harness must be used during
operation, if supplied with the tool.
Maintenance instructions
1. The condition of the nylon cutting head, protective devices must be checked before commencing work.
2. Turn off 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 changing 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, especially before/after use. Have the tool repaired
only by our authorized service center.
8. Keep handles dry, clean and free from oil and
grease.
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.
4 ENGLISH
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 pesticides, insecticides, fertilizers and herbicides.
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.
Symbols
The followings show the symbols used for tool.
volts
direct current
no load speed
revolutions or reciprocation per minute
10. The contained lithium-ion batteries are subject
to the Dangerous Goods Legislation requirements.
For commercial transports e.g. by third parties,
forwarding agents, special requirement on packaging and labeling must be observed.
For preparation of the item being shipped, consulting an expert for hazardous material is required.
Please also observe possibly more detailed
national regulations.
Tape or mask off open contacts and pack up the
battery in such a manner that it cannot move
around in the packaging.
11. Follow your local regulations relating to dis-
posal of battery.
12. Use the batteries only with the products
specied by Makita. Installing the batteries to
non-compliant products may result in a re, excessive heat, explosion, or leak of electrolyte.
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.
Important safety instructions for
battery cartridge
1. Before using battery cartridge, read all instructions and cautionary markings on (1) battery
charger, (2) battery, and (3) product using
battery.
2. Do not disassemble battery cartridge.
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 attention 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 the tool and battery cartridge 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. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
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 cartridge. Overcharging shortens the battery
service life.
3. Charge the battery cartridge with room temperature at 10 °C - 40 °C (50 °F - 104 °F). Let
a hot battery cartridge cool down before
charging it.
5 ENGLISH
PARTS DESCRIPTION
Parts description (with nylon cutting
head)
12
11
10
9
1
2
7 Plastic blade 8 Wire guard
9 Thumb nut 10 Front grip
11 Hanger for shoulder
harness
13 Lock-off button - -
12 Indication lamp
FUNCTIONAL
DESCRIPTION
8
3
7
4
6
5
1 Switch trigger 2 Battery cartridge
3 Lock lever 4 Protector
5 Nylon cutting head 6 Nylon cord
7 Wire guard 8 Thumb nut
9 Front grip 10 Hanger for shoulder
11 Indication lamp 12 Lock-off button
harness
Parts description (with plastic blade)
13
12
11
10
9
8
7
1 Switch trigger 2 Battery cartridge
3 Blade holder 4 Lock lever
5 Protector 6 Plastic blade head
5
6
1
2
3
4
WARNING: Always be sure that the tool is
switched off and the battery cartridge is removed
before adjusting or checking function on the tool.
Failure to switch off and remove the battery cartridge
may result in serious personal injury from accidental
start-up.
Installing or removing battery
cartridge
CAUTION: Always switch off 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 off your hands
and result in damage to the tool and battery cartridge
and a personal injury.
1
2
3
► 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 on the
upper side of the button, 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.
6 ENGLISH
Battery protection system
The tool is equipped with a battery protection system.
This system automatically cuts off power to the motor to
extend battery life.
The tool will automatically stop during operation if the
tool and/or battery are placed under one of the following
conditions:
Overloaded:
The tool is operated in a manner that causes it to draw
an abnormally high current.
In this situation, turn the tool off and stop the application
that caused the tool to become overloaded. Then turn
the tool on to restart.
If the tool does not start, the battery is overheated. In
this situation, let the battery cool before turning the tool
on again.
Low battery voltage:
The remaining battery capacity is too low and the tool
will not operate. If you turn the tool on, the motor runs
again but stops soon. In this situation, remove and
recharge the battery.
Indicating the remaining battery
capacity
Only for battery cartridges with the indicator
1
Switch action
WARNING: 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.
WARNING: For your safety, this tool is
equipped with the lock-off button which prevents
the tool from unintended starting. Never use the
tool if it starts when you pull the switch trigger
without pressing the lock-off button. Ask your local
Makita Service Center for repairs.
WARNING: Never disable the lock function or
tape down the lock-off button.
NOTICE: Do not pull the switch trigger forcibly
without pressing the lock-off button. The switch
may break.
2
1
2
► 1. Indicator lamps 2. Check button
Press the check button on the battery cartridge to indicate the remaining battery capacity. The indicator lamps
light up for a few seconds.
Indicator lamps Remaining
Lighted Off
NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
capacity
75% to 100%
50% to 75%
25% to 50%
0% to 25%
► 1. Switch trigger 2. Lock-off button
To prevent the switch trigger from being accidentally
pulled, a lock-off button is provided.
To start the tool, press the lock-off button and pull the
switch trigger. Release the switch trigger to stop. The
lock-off button can be pressed from either the right or
left side.
Indication lamp
Running the tool allows the indication lamp to show the
battery cartridge capacity status.
1
► 1. Lamp
7 ENGLISH
When the tool is also overloaded and has stopped
during operation, the lamp lights up in red. Refer to the
following table for the status and action to be taken for
the indication lamp.
Indication lamp Status Action to be taken
The lamp blinks
in red.
The lamp lights up
in red. (Note 1)
The lamp lights up
in red. (Note 1)
Note 1: The time at which the indication lamp lights up varies by
the temperature around the work area and the battery cartridge
conditions.
This indicates the
appropriate time to
replace the battery
cartridge when
the battery power
becomes low.
This function works
when the battery
power is almost
used up. At this
time, tool stops
immediately.
Autostop due to
overload.
Recharge the
battery cartridge.
Recharge the
battery cartridge.
Turn off the tool.
Nylon cutting head
NOTICE: Do not bump the tool to the concrete or
asphalt surface. Bumping to this kind of objects
may cause the tool damage.
NOTE: If the nylon cord does not feed out while
bumping the head, rewind or replace the nylon cord
by following the procedures in this manual.
NOTE: The bump and feed mechanism will not work
properly if the nylon cutting head is not rotating.
Plastic blade storage
1
2
► 1. Plastic blade 2. Blade holder
A plastic blade for replacement can be stored in the
blade holder of the tool. When storing or taking out the
blade, remove the battery cartridge.
Adjusting the position of the handle
and front grip
CAUTION: Before adjusting the shaft length,
be sure to switch off the tool and remove the
battery cartridge from the tool. Failure to do so may
cause a personal injury.
Adjust the length of the shaft so that you can hold the
handle when lowering your right hand.
2
1
► 1. Nylon cutting head 2. Cutter
The nylon cutting head has a bump and feed mechanism. To feed the nylon cord, bump the cutting head
against the ground while the tool is running. As the
nylon cord is feeding out, it will automatically be cut to
the proper length by the cutter.
1
► 1. Handle
To adjust the shaft length, open the lock lever, then
adjust the length of the shaft, and then close the lock
lever.
8 ENGLISH
1
1
2
3
► 1. Front grip 2. Thumb nut 3. Hex bolt
► 1. Lock lever
Adjust the position of the front grip so that you can hold
the front grip when lowering your left hand.
1
► 1. Front grip
ASSEMBLY
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before carrying out any work on the tool.
CAUTION: 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.
The front grip angle is adjustable. To adjust the front
grip angle, loosen the thumb nut, set the front grip at an
proper angle according to your work and then tighten
the thumb nut clockwise rmly.
Installing the wire guard
NOTICE: Do not expand the wire guard outward
too much. Otherwise it may break.
To reduce the risk of damaging the objects in front of the
cutting head, attach the wire guard to the protector so
that it controls the cutting range.
Slightly expand the wire guard outward and then insert
it into the holes of the protector.
For nylon cutting head:
Attach the wire guard to the holes on the front side of
the protector. The nylon cord mark on the protector
indicates the hole to be used.
Installing the front grip
Attach the front grip to the front grip holder and secure
it with a hex bolt and the thumb nut as shown in the
gure.
1
► 1. Hole
9 ENGLISH
For plastic blade head:
Attach the wire guard to the holes on the rear side of the
protector. The blade mark on the protector indicates the
hole to be used.
1
► 1. Hole
When wire guard is not in use, lift it for the idle position.
1
Installing nylon cutting head
Optional accessory
CAUTION: If the nylon cutting head acciden-
tally impacts a rock or hard object during operation, stop the tool and inspect for any damage.
If the nylon cutting head is damaged, replace it
immediately. Use of a damaged cutting tool could
result in serious personal injury.
CAUTION: Be sure to remove the hex wrench
after installation.
CAUTION: When installing or removing the
nylon cutting head, be careful not to contact the
nylon cord cutter on the protector. Contact with the
cutter may result in personal injury.
NOTICE: Be sure to use genuine Makita nylon
cutting head.
1. Turn the tool upside down so that you can replace
the cutting tool easily.
2. Insert the hex wrench through the hole on the
motor housing and rotate the spindle until the spindle is
locked.
3
► 1. Wire guard
Installing the protector
CAUTION: While installing the protector, be
careful not to contact the nylon cord cutter on
the protector. Contact with the cutter could result in
personal injury.
2
1
► 1. Screw 2. Protector
Mount the protector by tting it on to the motor housing,
and then secure it with two screws.
1
► 1. Hex wrench 2. Hole 3. Spindle
3. Place the nylon cutting head onto the spindle and
tighten it by turning it clockwise.
► 1. Nylon cutting head
4. Remove the hex wrench.
To remove the nylon cutting head, turn it counterclockwise while locking the spindle with the hex wrench.
10 ENGLISH
2
1
Installing plastic blade head
Optional accessory
CAUTION:
impacts a rock or hard object during operation, stop
the tool and inspect for any damage. If the plastic blade
is damaged, replace it immediately. Use of a damaged
cutting tool could result in serious personal injury.
CAUTION: Be sure to remove the hex wrench
after installation.
CAUTION: When installing or removing the
plastic blade head, be careful not to contact the
nylon cord cutter on the protector. Contact with the
cutter may result in personal injury.
CAUTION: If the plastic blade head is worn
out, replace it with a new one. If it is worn out, the
plastic blade may be thrown away from the plastic
blade head during operation and cause an injury.
NOTICE:
1. Turn the tool upside down so that you can replace
the cutting tool easily.
Insert the hex wrench through the hole on the motor
2.
housing and rotate the spindle until the spindle is locked.
► 1. Hex wrench 2. Hole 3. Spindle
If the plastic blade accidentally
Be sure to use genuine Makita plastic blade.
3
1
2
Attaching the shoulder harness
1
► 1. Hook
Attach the hooks of the shoulder harness to the tool as
shown in the gure.
CAUTION: Be sure to attach the hooks of the
shoulder harness to the tool securely. If the hooks
are attached incompletely, they may come off and
cause injury.
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 shown in the
gure to keep it from being lost.
3. Place the plastic blade head onto the spindle and
tighten it by turning it clockwise.
1
► 1. Plastic blade head
4. Remove the hex wrench.
To remove the plastic blade, turn it counterclockwise
while locking the spindle with the hex wrench.
1
► 1. Hex wrench
11 ENGLISH
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