Makita EM2652LHN User Manual
EM2650UH/EM2650LH/EM2652LHN
GB Brushcutter & String Trimmer
F Débroussailleuse Thermique
E Desbrozadora
INSTRUCTION MANUAL
MANUEL D’INSTRUCTIONS
MANUAL DE INSTRUCCIONES
EM2650UH
EM2650LH
EM2652LHN
Important:
Read this instruction manual carefully before putting the Brushcutter & String Trimmer into operation and strictly
observe the safety regulations!
Preserve instruction manual carefully!
Important :
Lisez attentivement les instructions du présent manuel avant de vous servir de la débroussailleuse thermique
pour la première fois, et respectez à la lettre les consignes de sécurité!
Conservez précieusement ce manuel d’instructions!
Importante:
Lea esta manual de instrucciones con atención antes de utilizar la desbrozadora y ¡observe estrictamente las
regulaciones de seguridad!
¡Conserve cuidadosamente su manual de instrucciones!
English
(Original instructions)
Thank you very much for purchasing the MAKITA Outdoor Power Equipment.
We are pleased to recommend to you the MAKITA product which is the result of
a long development program and many years of knowledge and experience.
Please read this booklet which refers in detail to the various points that will
demonstrate its outstanding performance. This will assist you to obtain the best
possible result from your MAKITA product.
SYMBOLS
You will note the following symbols when reading the instructions manual.
Read instruction manual and follow
the warnings and safety precautions!
Table of Contents Page
Symbols .........................................................................2
Safety instructions .........................................................3
Technical data................................................................7
Designation of parts.......................................................8
Mounting of handle ........................................................9
Approved combination of cutting tool, protector,
handle and harness .......................................................9
Mounting of protector...................................................10
Mounting of cutter blade or nylon cutting head............ 11
Before start of operation ..............................................12
Correct handling of machine........................................14
Points in operation and how to stop ............................14
Resharpening the cutting tool ......................................16
Servicing instructions...................................................18
Storage ........................................................................21
Keep the area of operation clear of all
persons and pets!
Take Particular care and attention!
Forbidden!
Keep distance!
Flying object hazard!
No smoking!
No open ame!
Wear protective helmet, eye and ear
protection!
Top permissible tool speed
Fuel (Gasoline)
Engine-manual start
Emergency stop
First Aid
ON/START
Protective gloves must be worn!
OFF/STOP
Wear sturdy boots with nonslip soles.
Steeltoed safety boots are recommended!
Kickback!
2
SAFETY INSTRUCTIONS
General Instructions
– Read this instruction manual to become familiar with handling of the
equipment. Users insufciently informed will risk danger to themselves as
well as others due to improper handling.
– It is recommended only to lend the equipment to people who have proven to
be experienced.
Always hand over the instruction manual.
– First users should ask the dealer for basic instructions to familiarize oneself
with the handling of an engine powered cutter.
– Children and young persons aged under 18 years must not be allowed to
operate this equipment. Persons over the age of 16 years may however
use the device for the purpose of being trained while under supervision of a
qualied trainer.
– Use with the utmost care and attention.
– Operate only if you are in good physical condition. Perform all work calmly
and carefully. The user has to accept liability for others.
– Never use this equipment after consumption of alcohol or drugs, or if feeling
tired or ill.
– National regulation can restrict the use of the machine.
Intended use of the machine
– This equipment is only intended for cutting grass, weeds, bushes,
undergrowth. It should not be used for any other purpose such as edging or
hedge cutting as this may cause injury.
Personal protective equipment
– The clothing worn should be functional and appropriate, i.e. it should be tight-
tting but not cause hindrance. Do not wear either jewelry or clothing which
could become entangled with bushes or shrubs.
– 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.
– Always wear a helmet where there is a risk of falling objects. The protective
helmet (1) is to be checked at regular intervals for damage and is to be
replaced at the latest after 5 years. Use only approved protective helmets.
– The visor (2) of the helmet (or alternatively goggles) protects the face from
ying debris and stones. During operation always wear goggles, or a visor to
prevent eye injuries.
– Wear adequate noise protection equipment to avoid hearing impairment (ear
muffs (3), ear plugs etc.).
– The work overalls (4) protect against ying stones and debris.
We strongly recommend that the user wears work overalls.
– Gloves (5) are part of the prescribed equipment and must always be worn
during operation.
– When using the equipment, always wear sturdy shoes (6) with a non-slip
sole. This protects against injuries and ensures a good footing.
Starting up the Brushcutter & String Trimmer
– Please 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.
– Before use always check the equipment is safe for operation:
Check the security of the cutting tool, the throttle lever for easy action and
check for proper functioning of the throttle lever lock.
– Rotation of the cutting tool during idling speed is not allowed. Check with your
dealer for adjustment if in doubt. Check for clean and dry handles and test
the function of the start/stop switch.
Diagrammatic gure
15 Meters
3
Start the Brushcutter or String Trimmer only in accordance with the instructions.
– Do not use any other methods for starting the engine!
– Use the Brushcutter/String Trimmer and the tools only for such applications
as specied.
– Only start the engine, after the entire assembly is done. Operation of the
device is only permitted after all the appropriate accessories are attached!
– Before starting make sure that the cutting tool has no contact with hard
objects such as branches, stones etc. as the cutting tool will revolve when
starting.
– The engine is to be switched off immediately in case of any engine problems.
– Should the cutting tool hit stones or other hard objects, immediately switch off
the engine and inspect the cutting tool.
– Inspect the cutting tool at short regular intervals for damage (detection of
hairline cracks by means of tapping-noise test).
– Operate the equipment only with the shoulder strap attached which is to
be suitably adjusted before putting the Brushcutter or String Trimmer into
operation. It is essential to adjust the shoulder strap according to the user
size to prevent fatigue occurring during use. Never hold the cutter with one
hand during use.
– During operation always hold the Brushcutter or String Trimmer with both
hands.
Always ensure a safe footing.
– Operate the equipment in such a manner as to avoid inhalation of the exhaust
gases. Never run the engine in enclosed rooms (risk of gas poisoning).
Carbon monoxide is an odorless gas.
– Switch off the engine when resting and when leaving the equipment
unattended, and place it in a safe location to prevent danger to others or
damage to the machine.
– Never put the hot Brushcutter or String Trimmer onto dry grass or onto any
combustible materials.
– The cutting tool has to be equipped with it appropriate guard.
Never run the cutter without this guard!
– All protective installations and guards supplied with the machine must be
used during operation.
– Never operate the engine with faulty exhaust mufer.
– Shut off the engine during transport.
– During transport over long distances the tool protection included with the
equipment must always be used.
– Ensure safe position of the equipment during car transportation to avoid fuel
leakage.
– When transporting, ensure that the fuel tank is completely empty.
– When unloading the equipment from the truck, never drop the Engine to the
ground or this may severely damage the fuel tank.
– Except in case of emergency, never drop or cast the equipment to the ground
or this may severely damage the equipment.
– Remember to lift the entire equipment from the ground when moving the
equipment. Dragging the fuel tank is highly dangerous and will cause damage
and leakage of fuel, possibly causing re.
• Resting
• Transport
• Refueling
• Maintenance
• Tool replacement
Refueling
– Shut off the engine during refueling, keep away from open ames and do not
smoke.
– Avoid skin contact with mineral oil products. Do not inhale fuel vapor. Always
wear protective gloves during refueling. Change and clean protective clothing
at regular intervals.
– Take care not to spill either fuel or oil in order to prevent soil contamination
(environmental protection). Clean the brushcutter or string trimmer
immediately after fuel has been spilt.
– Avoid any fuel contact with your clothing. Change your clothing instantly if
fuel has been spilt on it (to prevent clothing catching re).
– Inspect the fuel cap at regular intervals making sure that it can be securely
fastened and does not leak.
– Carefully tighten the fuel tank cap. Change location to start the engine (at
least 3 meters away from the place of refueling).
– Never refuel in closed rooms. Fuel vapors accumulate at ground lever (risk of
explosions).
– Only transport and store fuel in approved containers. Make sure the fuel
stored is not accessible to children.
4
3 meters
Method of operation
– Only use 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.
– Never cut above waist height.
– Never stand on a ladder.
– Never climb up into trees to perform cutting operation.
– Never work on unstable surfaces.
– Remove sand, stones, nails etc. found within the working range.
Foreign particles may damage the cutting tool and can cause dangerous
kick-backs.
– Before commencing cutting, the cutting tool must have reached full working
speed.
– When using metal blades, swing the tool evenly in half-circle from right to left,
like using a scythe.
Cutting Tools
– Use an applicable cutting tool for the job in hand.
Nylon cutting heads (nylon line) are suitable for trimming lawn grass.
Metal blades are suitable for cutting weeds, high grasses, bushes, shrubs,
underwood, thicket, and the like.
– When using metal blades, always use the approved protector, handle (with
barrier bar) and harness for use of metal blades. Otherwise blade contact
may cause serious injury. See the section “Approved combination of cutting
tool, protector, handle and harness.”
– When using metal blades, avoid “kickback” and always prepare for an
accidental kickback. See the section “Kickback” and “Kickback prevention.”
Kickback
– When operating the Brushcutter, uncontrolled kickback may occur.
– This is particularly the case when attempting to cut within a blade segment
between 12 and 2 o’clock.
– Never apply the Brushcutter within a segment between 12 and 2 o’clock.
– Never apply this segment of the Brushcutter blade to solids, such as bushes
and trees, etc., having a diameter in excess of 3 cm or the Brushcutter will be
deected at great force with the risk of injuries.
Kickback prevention
To avoid kickbacks, observe the following:
– Operating 12 and 2 o’clock presents a hazard, especially when using metal
blades.
– Cutting 11 and 12 o’clock, and between 2 and 5 o’clock, must be performed
by trained and experienced operators, and then only at their own risk.
Easy cutting with almost no kickback is possible between 8 and 11 o’clock.
Maintenance instructions
– The condition of the cutter, in particular of the cutting tool of the protective
devices and also of the shoulder strap must be checked before commencing
work. Particular attention is to be paid to the cutting blades which must be
correctly sharpened.
– Turn off the engine and remove spark plug connector when replacing or
sharpening cutting tools, and also when cleaning the cutter or cutting tool.
Caution:
Kickback
Diagrammatic
gure
Diagrammatic
gure
5
Never straighten or weld damaged cutting tools.
– Pay attention to the environment. Avoid unnecessary throttle operation for
less pollution and noise emissions. Adjust the carburetor correctly.
– Clean the equipment at regular intervals and check that all screws and nuts
are well tightened.
– Never service or store the equipment in the vicinity of naked ames.
– Always store the equipment in locked rooms and with an emptied fuel tank.
Observe the relevant accident prevention instructions issued by the relevant trade associations and by the insurance companies.
Do not perform any modications to the equipment as this will endanger your safety.
The performance of maintenance or repair work by the user is limited to those activities as described in the instruction manual. All other work is
to be done by an Authorized Service Agent. Use only genuine spare parts and accessories released and supplied by MAKITA.
Use of non-approved accessories and tools means increased risk of accidents.
MAKITA will not accept any liability for accidents or damage caused by the use of non-approved cutting tools and xing devices of cutting tools,
or accessories.
First Aid
In case of accident make sure that a rst-aid box is available in the vicinity of
the cutting operations. Immediately replace any item taken from the rst aid box.
When asking for help, please give the following
information:
– Place of accident
– What happened
– Number of injured persons
– Kind of injuries
– Your name
6
TECHNICAL DATA EM2650UH, EM2650LH, EM2652LHN
Model
Dimensions: length x width x
height (without cutting blade)
Mass (without plastic guard
and cutting blade)
Volume (fuel tank) .oz (L) 20.3 (0.6)
Volume (oil tank) .oz (L) 2.7 (0.08)
Engine displacement cu.in (cm
Maximum engine performance hp (kw) 1.1 (0.77) at 7,000 rpm
Engine speed at
recommended max. spindle
speed
Maximum spindle speed
(corresponding)
Idling speed RPM (1/min) 3,000
Clutch engagement speed RPM (1/min) 3,900 4,000
Carburetor Diaphragm type
Ignition system Non-contact, magnet type
Spark plug type NGK CMR4A
Electrode gap inch (mm) 0.028” - 0.032” (0.7 - 0.8)
Fuel Automobile gasoline (petrol)
Engine Oil
Cutting tools
(cutter blade dia.)
Gear ratio 14/19 14/29
inch (mm)
lbs (kg) 12.11 (5.5) 11.02 (5.0) 11.5 (5.2)
RPM (1/min) 10,000 9,700
RPM (1/min) 7,400 4,700
inch (mm) 9 - 1/16” (230) — —
69 - 1/2” X 24 - 3/8” X 18 - 2/3”
3
) 1.5 (25.4)
EM2650UH EM2650LH EM2652LHN
Bike handle Loop handle
(1,765 x 620 x 474)
69 - 1/2” X 8 - 7/8” X 12 - 3/4”
(1,765 x 226 x 323)
API grade SF class or higher SAE 10W-30 oil
(automobile 4-stroke engine oil)
70” X 9 - 9/16” X 12 - 3/4”
(1,776 x 243 x 323)
(For Canada) NOTE: This spark ignition system complies with the Canadian standard ICES-002.
7
DESIGNATION OF PARTS
5
EM2650UH
15
13
11
16
EM2650LH
EM2652LHN
5
4
9
7
12
10
10
13
14
15
12
7
9
8
11
4
14
17
20
19
18
GB DESIGNATION OF PARTS
1 Fuel tank
2 Rewind starter
3
6
21
22
1
2
3 Air cleaner
4 I-O switch (on/off)
5 Spark plug
6 Exhaust mufer
7 Clutch case
8 Rear grip
9 Hanger
10 Handle
11 Throttle lever
12 Control cable
13 Shaft
14 Protector
15 Gear Case/Head case
16 Handle holder
17 Cutter blade
18 Nylon cutting head
19 Fuel tank cap
20 Starter knob
21 Exhaust pipe
22 Oil cap
8
MOUNTING OF HANDLE
7
7
8
9
9
10
CAUTION: Before doing any work on the equipment, always stop the engine
and pull the spark plug connector off the spark plug.
Always wear protective gloves!
CAUTION: Start the engine only after having assembled it completely.
For machines with bike handle models
– Loosen knob (1).
– Place handle (4) between handle clamp (2) and handle holder (3).
– Adjust handle (4) to an angle that provides a comfortable working position
and then secure by rmly hand-tightening knob (1).
（4）
Engine
（3）
（1）
（2）
（5）
CAUTION: Do not forget to mount spring (5).
Engine
For machines with loop handle
– Fix the loop handle on the shaft as shown.
– To keep a proper distance between the grips, set the loop handle ahead of
the arrows.
APPROVED COMBINATION OF CUTTING TOOL, PROTECTOR, HANDLE AND HARNESS
WARNING: Always use the tool with the approved combination of the safety equipments.
Use of nylon cutting head (EM2650UH, EM2650LH, EM2652LHN)
Nylon cutting head Protector Handle Harness
Otherwise contact with a cutting tool may cause serious injury.
(With or without barrier bar) (With or without shoulder strap)
(With protector extension)
Use of metal blade (EM2650UH, optional accessory for EM2650LH, EM2652LHN)
Metal blade Protector Handle Harness
(With barrier bar)
(Clamp
washer,
cup, and
nut are
necessary)
(Without protector extension)
9
MOUNTING OF PROTECTOR
To meet the applicable safety provisions, only the tool/
protector combinations as indicated in the table must be used.
For EM2650UH
– In use of the metal blade, x the protector (3) to the clamp (2) with two bolts
M6 x 30 (1).
NOTE: Tighten the right and left bolts evenly so that the gap between the clamp
(2) and the protector (3) will be constant.
Otherwise, the protector sometimes may not function as specied.
– In cases where the nylon cord cutter is to be used, be sure to mount the
protector extension (4) onto the metal blade protector (3).
– Mount the protector extension (4) by sliding it into place from the ank of the
metal blade protector (3) as shown.
– Remove tape adhered to cutter, which cuts nylon cord, on protector extension
(4).
CAUTION: Be sure to push in protector extension (4) until it is fully inserted.
Take care not to injure yourself on the cutter for cutting the nylon
cord.
– To remove the protector extension (4), apply a hex wrench into the notch on
the metal blade protector (3), push it in and meanwhile slide the protector
extension (4).
(2)
(1)
(3)
(3)
(4)
Hex wrench
For EM2650LH, EM2652LHN
– Fix the protector (3) to the clamp (2) with two bolts M6 x 30 (1).
NOTE: Tighten the right and left bolts evenly so that the gap between the clamp
(2) and the protector (3) will be constant.
Otherwise, the protector sometimes may not function as specied.
(1)
(3)
(2)
10
MOUNTING OF CUTTER BLADE OR NYLON CUTTING HEAD
Be sure to use genuine MAKITA cutter blades or nylon
cutting head.
– The cutter blade must be well polished, free of cracks or breakage. If the
cutter blade hits against a stone during operation, stop the engine and check
the blade immediately.
– Polish or replace the cutter blade every three hours of operation.
– If the nylon cutting head hits against a stone during operation, stop the
engine and check the nylon cutting head immediately.
Hex wrench
(4)
CAUTION: The appropriate protector must always be installed, for your own
safety and in order to comply with accident-prevention regulations.
Operation of the equipment without the protector being in place is
not permitted.
The outside diameter of the cutter blade must be 230 mm (9 1/16”). Never use any blades surpassing 230 mm (9 - 1/16”) in
outside diameter.
Turn the machine upside down, and you can replace the cutter blade or nylon
cutting head easily.
– Insert the hex wrench through the hole in the gear case and rotate the
receiver washer (4) until it is locked with the hex wrench.
– Loosen the nut (1) (left-hand thread) with the socket wrench and remove the
nut (1), cup (2), and clamp washer (3).
Mounting of cutter blade with the hex wrench still in place
–– Mount the cutter blade onto the shaft so that the guide of the receiver washer
(4) ts in the arbor hole in the cutter blade. Install the clamp washer (3), cup
(2), and secure the cutter blade with the nut (1).
[Tightening torque: 13 - 23 N-m]
NOTE: Always wear gloves when handling the cutter blade.
NOTE: The cutter blade-fastening nut (with spring washer) is a consumable
part. If there appears any wear or deformation on the spring washer,
replace the nut.
(3)
(2)
(1)
Hex wrench
Mounting of nylon cutting head
– The clamp washer (3), cup (2), and nut (1) are not necessary for mounting
the nylon cutting head. The nylon cutting head should go on top of the
receiver washer (4).
– Insert the hex wrench through the hole in the gear case and rotate the
receiver washer (4) until it is locked with the hex wrench.
– Then screw the nylon cutting head onto the shaft by turning it counter-
clockwise.
– Remove the hex wrench.
Loosen Tighten
(4)
Hex wrench
Rotation
11
BEFORE START OF OPERATION
Inspectionandrellofengineoil
– Perform the following procedure, with the engine cooled down.
– Set the engine level, remove oil cap (Fig. 1), and check to see whether or not there is oil in the range between the upper limit and lower limit
marks of the oil pipe (Fig. 2).
– Fill with oil to upper limit mark if oil is insufcient (oil level is close to lower limit mark) (Fig. 3).
– The area surrounding the external marks is transparent, so the amount of oil inside can be checked without having to remove the oil cap.
However, if oil pipe becomes extremely dirty, visibility may be lost, and oil level will have to be checked against stepped section on inside of
oil pipe.
– For reference, the oil rell time is about 10h (10 times or 10 tanks of gas before oil needs to be relled).
If the oil changes in color or mixes with dirt, replace it with new one. (For the interval and method of replacement, refer to P 18)
Recommended oil: SAE 10W-30 oil of API Classication, Class SF or higher (4-stroke engine for automobile)
Oil volume: Approx. 0.08L
NOTE: If the engine is not kept upright, oil may pool in other parts of the engine. The oil levelgauge may give an incorrect reading for oil level.
Do not ll with oil if engine is not upright. If the oil is lled above the limit, the oil may be contaminated or may catch re with white
smoke.
Point 1 in Replacement of oil: “Oil cap”
– Remove dust or dirt near the oil rell port, and detach the oil cap.
– Keep the detached oil cap free of sand or dust. Otherwise, any sand or dust adhering to the oil cap may cause irregular oil circulation or
wear on the engine parts, which will result in troubles.
Oil cap
Internal stepped
section (upper
limit)
Oil pipe
Fig. 1
(1) Keep the engine level, and detach the oil cap.
(2) Fill with oil to upper limit mark. (see Fig. 3)
Use oil bottle when lling.
Internal stepped
section (lower
limit)
External mark
(upper limit)
External mark
(lower limit)
Fig. 2 Oil pipe Fig. 3
Top up with oil until
oil level reaches
internal stepped
section (upper
limit).
Oil
The area between the
external upper and lower
limits is transparent, so
oil level can be checked
externally against these
marks.
(3) Securely tighten the oil cap. Insufcient tightening may cause oil leakage.
12
Note
• Do not replace oil with the engine in a tilted position.
• Filling with oil while engine is tilted leads to overlling which causes oil contamination and/or white smoke.
Point 2 in Replacement of oil: “If oil spills out”
– If oil spills out between the fuel tank and engine main unit, the oil is sucked into through the cooling air intake port, which will contaminate
the engine. Be sure to wipe out spilt oil before start of operation.
REFUELING
Handling of fuel
It is necessary to handle fuel with utmost care. Fuel may contain substances similar to solvents. Refueling must be performed in a sufciently
ventilated room or in the open air. Never inhale fuel vapor, and keep fuel away from you. If you touch fuel repeatedly or for a long time, the
skin becomes dry, which may cause skin disease or allergy. If fuel enters into the eye, clean the eye with fresh water. If your eye remains still
irritated, consult your doctor.
Storage period of fuel
Fuel should be used within a period of 4 weeks, even if it is kept in a special container in a well-ventilated and shaded area.
Otherwise, fuel may deteriorate in one day.
STORAGE OF MACHINE AND REFILL TANK
– Keep the machine and tank at a cool place free from direct sunshine.
– Never keep the fuel in a car.
Fuel
The engine is a four-stroke engine. Be sure to use an unleaded automobile gasoline 87 or higher octane ((R+M)/2). It may contain no more than
10% alcohol (E-10).
Points for fuel
– Never use a gasoline mixture which contains engine oil. Otherwise, it will cause excessive carbon accumulation or mechanical troubles.
– Use of deteriorated oil will cause irregular start-up.
Refueling
WARNING: Shut off the engine before refueling, keep away from
openamesanddonotsmoke.
Gasoline used: Unleaded automobile gasoline, 87 or higher octane. No more
than 10% alcohol (E-10).
– Loosen the tank cap a little to release the tank pressure.
– Detach the tank cap, and refuel, discharging air by tilting the fuel tank so that
the refuel port will be oriented upward. DO NOT ll fuel up to the top of the
tank.
– Wipe the outside of the tank cap to prevent debris from entering into the fuel
tank.
– After refueling, securely tighten the tank cap.
• If there is any aw or damage on the tank cap, replace it.
• The tank cap wears out in course of time. Replace it every two to three years.
• DO NOT put fuel in the oil ll port.
Fuel upper limit
Fuel tank
Fuel tank cap
13
CORRECT HANDLING OF MACHINE
Attachment of shoulder strap
– Adjust the strap length so that the cutter blade will be
kept parallel with the ground.
For EM2650UH
NOTE: Be careful not to trap clothing, etc., in the buckle.
Detachment
For EM2650LH, EM2652LHN (Optional accessory)
– In an emergency, push the notches (1) at both sides, and you can detach the
machine from you.
Be extremely careful to maintain control of the machine at this time. Do not
allow the machine to be deected toward you or anyone in the work vicinity.
WARNING: Failure to maintain complete control of the machine at all could
result in serious bodily injury or DEATH.
Buckle
EM2650UH
(1)
Hanger
For EM2650UH
– In case of emergency, remove the emergency detachment lever (2) by pulling
strongly with a nger. The machine sill detach from body.
Be extremely careful to maintain control of the machine at this time. Do not
allow the machine to be deected toward you or anyone in the work vicinity.
WARNING: Failure to maintain complete control of the machine at all could
result in serious bodily injury or DEATH.
(2)
Hanger
POINTS IN OPERATION AND HOW TO STOP
Observe the applicable accident prevention regulations!
STARTING
Move at least 3 m away from the place of refueling. Place the unit on the ground taking care that the cutting tool does not come into contact with
the ground or any other objects.
A: Cold start
1) Set this machine on a at space.
2) Set the I-O switch (1) to OPERATION.
OPERATION
Lock-off lever
STOP
Throttle lever
High speed
Low speed
Throttle lever
Low speed
High speed
STOP
(1)
OPERATION
Lock-off lever
(1)
14
EM2650LH
EM2652LHN
EM2650UH
3) Primer pump
Continue to push the primer pump until fuel enters into the primer pump. (In
general, fuel enters into the primer pump by 7 to 10 pushes.)
If the primer pump is pushed excessively, an excess of gasoline returns to
the fuel tank.
4) Recoil starter
Pull the start knob gently until it is hard to pull (compression point). Then,
return the start knob, and pull it strongly.
Never pull the rope to the full. Once the start knob is pulled, never release
your hand immediately. Hold the start knob until it returns to its original
point.
5) Warm-up operation
Continue warm-up operation for 2 to 3 minutes.
NOTE:
• In case of excessive fuel intake (ooding), remove the spark plug and pull the starter handle slowly to remove excess fuel. Also, dry the
electrode section of the spark plug.
• When operating the tool with a metal blade, don’t open the throttle fully. Operating the tool with the appropriate engine speed for use of metal
blades (around 6,000 to 8,500 rpm) will save the fuel.
On the other hand, nylon cutting heads requires full throttle for clean cut.
Primer Pump
Carburetor
B: Startup after warm-up operation
1) Push the primer pump repeatedly.
2) Keep the throttle lever at the idling position.
3) Pull the recoil starter strongly.
4) If it is difcult to start the engine, open the throttle by about 1/3.
Pay attention to the cutter blade which may rotate.
At times, such as winter, when starting the engine
is difcult
Operate choke lever with the following procedure when starting engine.
• After implementing startup steps 1) to 3), set choke lever to the CLOSE
position.
• Implement startup step 4) and start engine.
• Once engine starts, set choke lever to the OPEN position.
• Implement startup step 5) and complete warm up.
CAUTION: If a bang (explosive sound) is heard and the engine stops, or the
just-started engine stalls before the choke lever is operated, return
the choke lever to the OPEN position, and pull the starter knob a
few times again to start the engine.
CAUTION: If the choke lever is left in the CLOSE position, and the starter knob
merely pulled repeatedly, too much fuel will be sucked in, and the
engine will become difcult to start.
CLOSE
15
OPEN
STOPPING
1) Release the throttle lever (2) fully, and when the
engine rpm has lowered, set the I-O switch (1)
to STOP the engine will now stop.
2) Be aware that the cutting head may not stop
immediately and allow it to slow down fully.
STOP
(2)
(2)
STOP
(1)
(1)
EM2650LH
EM2652LHN
ADJUSTMENT OF LOW-SPEED ROTATION (IDLING)
When it is necessary to adjust the low-speed rotation (idling), perform it by the carburetor adjusting screw.
CHECKUP OF LOW-SPEED ROTATION
– Set the low-speed rotation to 3,000 min-1.
If it is necessary to change the low speed rotation (idle) speed, use a phillips
head screw driver on the screw illustrated on the right.
– Turn the adjusting screw to the right, and the engine rotation will increase.
Turn the adjusting screw to the left, and the engine rotation will drop.
– The carburetor is generally adjusted before shipment. After several tanks of
gasoline the idle rpm may need to be readjusted.
Carburetor
Adjusting
screw
RESHARPENING THE CUTTING TOOL
CAUTION: The cutting tools shown in the illustration are not to be sharpened.
Manual resharpening will result in imbalances of the cutting tool
causing vibrations and damage to the equipment.
EM2650UH
NOTE: To increase the service life of the cutter blade it may be turned over
once, until both cutting edges have become blunt.
NYLON CUTTING HEAD
The grass trimmer cutting head is a dual line trimmer head that has bump &
feed mechanism.
The nylon cutting head will feed out the proper length of nylon line after tapping
the trimmer head on the ground by changes in centrifugal force caused by
increasing or decreasing rpms.
Operation
– (For model EM2650UH, EM2650LH) Increase the nylon cutting head speed
till just before full throttle.
(For model EM2652LHN) Increase the nylon cutting head speed till full
throttle.
Bump the trimmer head lightly on the ground.
– The most effective cutting area is shown by the shaded area.
– If the nylon cord does not feed out, rewind/replace the nylon cord by following
the procedures described under “Replacing the nylon cord.”
Most effective cutting area
16
Replacing the nylon cord
– First, stop the engine.
– Hold the housing securely and turn the spool clockwise until the remaining
nylon cord retracts into the housing, and turn back and forth to relieve the
cord stress.
– Grasp the loop on top of the spool and pull it from the spool.
– Prepare a nylon cord with the following specications.
4.5 m (15 ft) length
2.4 mm (0.095”) diameter round cord or 2.0 mm (0.08”) diagonal square cord.
– Align the arrow on the spool with the eyelets on the housing.
– Insert one end of the nylon cord into eyelet on the side of the housing, feed
through hole on top of the spool and then re-insert into the second hole on
top of the spool. Push the nylon cord into holes until the cord feeds through
eyelets on side of the housing.
– Push the nylon cord into holes feeding through eyelets on side of the housing
until equal length on both sides.
– Hold the housing securely and turn the spool clockwise to wind the nylon cord
into the spool.
17
SERVICING INSTRUCTIONS
CAUTION: Before doing any work on the equipment, always stop the engine and pull the plug cap off the spark plug (see “checking the spark
To ensure a long service life and to avoid any damage to the equipment, the following servicing operations should be performed at regular
intervals.
plug”).
Always wear protective gloves!
Daily checkup and maintenance
– Before operation, check the machine for loose screws or missing parts. Pay particular attention to the tightness of the cutter blade or nylon
cutting head.
– Before operation, always check for clogging of the cooling air passage and the cylinder ns.
Clean them if necessary.
– Perform the following work daily after use:
• Clean the equipment externally and inspect for damage.
• Clean the air lter. When working under extremely dusty conditions, clean the lter the several times a day.
• Check the blade or the nylon cutting head for damage and make sure it is rmly mounted.
• Check that there is sufcient difference between idling and engagement speed to ensure that the cutting tool is at a standstill while the
engine is idling (if necessary reduce idling speed).
If under idling conditions the tool should still continue to run, consult your nearest Authorized Service Agent.
– Check the functioning of the I-O switch, the lock-off lever, the throttle lever, and the lock button.
REPLACEMENT OF ENGINE OIL
Deteriorated engine oil will shorten the life of the engine. Be sure to check the oil and level regularly.
ATTENTION: In general, the engine main unit and engine oil still remain hot just after the engine is stopped. In replacement of oil,
make sure that the engine main unit and engine oil are sufciently cooled down. Otherwise, there may remain a risk
of scald.
NOTE:Iftheoillledabovethelimit,itmaybecontaminatedormaycatchrewithwhitesmoke.
Interval of replacement: After rst 20 operating hours, followed by every 50 operating hours.
Recommended oil: SAE10W-30 oil of API Classication SF Class or higher (4-stroke engine oil for automobile)
In replacement, perform the following procedure.
1) Make sure that the fuel tank cap is tightened securely.
2) Place large container (pan, etc.) under drain hole.
Fuel tank cap
3) Remove drain bolt and then remove oil cap to drain out oil from drain hole.
At this time, be sure not to lose drain bolt’s gasket, or get dirty any of the
removed components.
4) Once all the oil has been drained, install gasket and drain bolt, and tightly
secure drain bolt, so that it will not loosen and cause leaks.
* Use cloth to fully wipe off any oil attached to bolt and equipment.
Oil cap
Oil cap
Drain hole
Gasket
Drain bolt
Alternative draining method
Remove oil cap, tilt the equipment toward oil ller hole, and drain out oil.
Collect oil in container.
18
5) Set the engine level, and gradually ll up to upper limit mark with new oil.
6) After lling, tightly secure oil cap, so that it will not loosen and cause leaks.
If oil cap is not tightly secured, it may leak.
Internal stepped
section (upper
limit)
Internal stepped
section (lower
limit)
Upper limit mark
Oil
External mark
(upper limit)
External mark
(lower limit)
POINTS ON OIL
– Never discard replaced engine oil in garbage, earth or sewage ditch. Disposal of oil is regulated by law. In disposal, always follow the
relevant laws and regulations. For any points remaining unknown, contact Authorized Service Agent.
– Oil will deteriorate even when it is kept unused. Perform inspection and replacement at regular intervals (replace with new oil every
6 months).
CLEANING OF AIR CLEANER
WARNING: Shutofftheengine,keepawayfromopenames
and do not smoke.
Interval of Cleaning and Inspection: Daily (every 10 operating hours)
– Turn the choke lever to the full close side, and keep the carburetor off from
dust or dirt.
– Loosen the xing bolt.
– Remove the air cleaner cover by pulling its bottom side.
– Remove the elements and tap them to remove dirt.
– If the elements are heavily contaminated:
Remove the elements, immerse them in warm water or in water-diluted
neutral detergent, and dry them completely. Do not squeeze or rub them
when washing.
– Before attaching the elements, be sure to dry them completely. Insufcient
drying of the elements may lead to difcult startup.
– Wipe out oil adhering around the air cleaner cover and the breather part with
waste cloth.
– Fit the element (sponge) into the element (felt).
Fit the elements into the plate so that the sponge faces the air cleaner cover.
– Immediately attach the cleaner cover and tighten it with xing bolts. (In
remounting, rst place the upper claw, and then the lower claw.)
NOTICE:
– Clean the elements several times a day, if excessive dust adheres to it.
Dirty elements reduce engine power and make starting engine difcult.
– Remove oil on the elements. If operation continues with the elements
remaining not cleared of oil, oil in the air cleaner may fall outside, resulting
in contamination of the environment.
– Do not put the elements on the ground or dirty place. Otherwise they pick
up dirt or debris and it may damage the engine.
– Never use fuel for cleaning the elements. Fuel may damage them.
Plate
Element (sponge)
Air cleaner
cover
Choke
lever
Breather Part
Element (felt)
Fixing bolt
19
CHECKING THE SPARK PLUG
– Only use the supplied universal wrench to remove or to install the spark plug.
– The gap between the two electrodes of the spark plug should be 0.7 - 0.8 mm
(0.028” - 0.032”). If the gap is too wide or too narrow, adjust it. If the spark
plug is clogged or contaminated, clean it thoroughly or replace it.
CAUTION: Never touch the spark plug connector while the engine is running
(danger of high voltage electric shock).
SUPPLY OF GREASE TO GEAR CASE
– Supply grease (Shell Alvania 2 or equivalent) to the gear case through the
grease hole every 30 hours. (Genuine MAKITA grease may be purchased
from your MAKITA dealer.)
CLEANING OF FUEL FILTER
WARNING: INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Monthly (every 50 operating hours)
Suction head in the fuel tank
Check the fuel lter periodically. To check the fuel lter, follow the steps below.
(1) Remove the fuel tank cap, drain the fuel to empty the tank. Check the tank
inside for any foreign materials. If any, remove them.
(2) Pull out the suction head by using a wire hook through the tank opening.
(3) If the fuel lter clogged slightly, clean it. To clean it, gently shake and tap
it in fuel. To avoid damage, do not squeeze or rub it. The fuel used for the
cleaning must be disposed in accordance with the method specied by
regulations in your country.
If the fuel lter became hard or heavily clogged up, replace it.
(4) After checking, cleaning or replacing, push the fuel lter in all the way to the
bottom of the fuel tank.
Clogged or damaged fuel lter can cause insufcient fuel supply and reduce
engine power. Replace the fuel lter at least quarterly to ensure satisfactory fuel
supply to the carburetor.
0.7 mm - 0.8 mm
(0.028” - 0.032”)
Gear case
Grease hole
Fuel pipe
Hose clamp
Fuel lter
REPLACEMENT OF FUEL PIPE
CAUTION: INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Daily (every 10 operating hours)
Replacement: Annually (every 200 operating hours)
Replace the fuel pipe every year, regardless of operating frequency. Fuel
leakage may lead to re.
If any leakage is detected during inspection, replace the fuel pipe immediately.
Fuel pipe
INSPECTION OF BOLTS, NUTS AND SCREWS
– Retighten loose bolts, nuts, etc.
– Check the fuel cap and oil cap for tightness. Check for fuel and oil leakage.
– Replace damaged parts with new ones for safety operation.
CLEANING OF PARTS
– Always keep the engine clean.
– Keep the cylinder ns free of dust or dirt. Dust or dirt adhering to the ns will
cause piston seizure.
REPLACEMENT OF GASKETS AND PACKINGS
In reassembling the engine, be sure to replace the gaskets and packings with new ones.
Any maintenance or adjustment work that is not included and described in this manual is only to be performed by Authorized Service Agents.
20
STORAGE
WARNING: When draining the fuel, be sure to stop the engine and make sure that the engine
cools down.
Just after stopping the engine, it may still be hot with possibility of burns,
inammabilityandre.
ATTENTION: When the machine is kept out of operation for a long time, drain up all fuel from the
fuel tank and carburetor, and keep it at a dry and clean place.
– Drain fuel from the fuel tank and carburetor according to the following
procedure:
1) Remove the fuel tank cap, and drain fuel completely.
If there is any foreign matter remaining in the fuel tank, remove it
completely.
2) Pull out the fuel lter from the rell port using a wire.
3) Push the primer pump until fuel is drained from there, and drain fuel
coming into the fuel tank.
4) Put the lter to the fuel tank, and securely tighten the fuel tank cap.
5) Then, continue to operate the engine until it stops.
– Remove the spark plug, and drip several drops of engine oil through the
spark plug hole.
– Gently pull the starter handle so that engine oil will spread over the engine,
and attach the spark plug.
– Attach the cover to the cutter blade.
– During storage, keep the rod horizontal or keep the machine upright with the
blade edge oriented upward. (In this case, pay full attention to prevent the
machine from falling.)
Never store the machine with the cutter blade edge oriented downward.
Lubricating oil may spill out.
– Keep the drained fuel in a special container in a well-ventilated shade.
Attention after long-time storage
– Before startup after long-time shutdown, be sure to replace oil (refer to P 18). Oil will deteriorate while the machine is kept out of
operation.
Fault location
Fault System Observation Cause
Engine not starting or with
difculty
Warm start problems Tank lled ignition spark
Engine starts but dies Fuel supply Tank lled Incorrect idling adjustment, carburetor contaminated
Ignition system Ignition spark O.K. Fault in fuel supply or compression system, mechanical
defect
No ignition spark STOP-switch operated, wiring fault or short circuit, spark
plug or connector defective, ignition module faulty
Fuel supply Fuel tank lled Incorrect choke position, carburetor defective, fuel supply
line bent or blocked, fuel dirty
Compression No compression when
pulled over
Mechanical fault Starter not engaging Broken starter spring, broken parts inside of the engine
existing
Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective or improper
sealing of spark plug
Carburetor contaminated, have it cleaned
Fuel tank vent defective, fuel supply line interrupted,
cable or STOP-switch faulty
Insufcient performance Several systems may
simultaneously be
affected
Engine idling poor Air lter contaminated, carburetor contaminated, mufer
clogged, exhaust duct in the cylinder clogged
21
Item
Operating time
Before
operation
After
lubrication
Daily
(10h)
30h 50h 200h
Shutdown/
rest
Corres-
ponding P
Engine oil
Inspect
Replace
Tightening parts
(bolt, nut)
Inspect
Clean/inspect
Fuel tank
Drain fuel
Throttle lever Check function
Stop switch Check function
Cutting blade Inspect
Low-speed rotation Inspect/adjust
Air cleaner Clean
Ignition plug Inspect
Cooling air duct Clean/inspect
Inspect
Fuel pipe
Replace
Gear-case grease Rell
12
1
*
18
20
—
3
*
21
—
16
10
16
19
20
20
20
2
*
—
20
Fuel lter Clean/replace
Clearance between air intake
valve and air discharge valve
Adjust
Engine overhaul
Carburetor Drain fuel
*1 Perform initial replacement after 20h operation.
*2 For the 200 operating hour inspection, request Authorized Service Agent or a machine shop.
*3 After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor.
20
2
*
2
*
3
*
—
—
21
22
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