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1Cover
ENGLISH
OPERATOR'S MANUAL
GRASS-TRIMMER/BRUSHCUTTER
SRM-236ES
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE
RULES FOR SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
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Contents
For safe use of your product...............................................................................................3
Description..........................................................................................................................8
Before you start ..................................................................................................................9
Packing list ....................................................................................................................9
Assembly.....................................................................................................................10
Loop handle version ....................................................................................................10
U-handle version..........................................................................................................11
Adjusting the balance ..................................................................................................13
Preparing the fuel ........................................................................................................14
Engine operation...............................................................................................................15
Starting the engine ......................................................................................................15
Stopping the engine.......................................................................... ....... ...... ....... ...... .16
Trimming operation...........................................................................................................17
Using shoulder harness...............................................................................................18
Basic trimming operation with nylon line cutting head.................................................18
Basic trimming operation with metal blade..................................................................20
Maintenance and care .............................................................. ....... ...... ....... ...... ....... ...... .21
Servicing guidelines.....................................................................................................21
Maintenance and care .................................................................................................21
Storage........................................................................................................................27
Specifications....................................................................................................................28
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For safe use of your product
For safe use of your product
Important information
WARNING
Please ensure that you read the operator's manual before using your product.
About your operator's manual
This manual contains necessary information about the assembly, operation, and maintenance of your product.
Please read it carefully and absorb its contents.
Always keep your manual in a place where it is readily accessible.
If you have lost your manual or it is damaged and no longer readable, please purchase a new one from your dealer.
The units used in this manual are SI units (International System of Units). Figures in parentheses are reference values, and there may be a slight conversion error in some cases.
Failure to do so could lead to an accident or serious injury.
Intended use of this product
This product is lightweight, high-performance, petrol engined unit designed for weed control, grass trimming and
brush cutting in areas difficult to control by any other means.
Do not use this unit for any purpose other than aforementioned.
The content of this manual may be changed witho ut notice for the pu rpose of upgrades to the product. Some of the
illustrations used may differ from the product itself in order to make the explanations clearer.
Please consult your dealer if anything is unclear or of concern.
Failure to do so could lead to an accident or serious injury.
Do not modify the product
You must not modify the product.
To do so could lead to an accident or serious injury. Any malfunction resulting from a modification to the product will not be
covered by the manufacturer's warranty.
Do not use the product unless it has been checked and maintained
You must not use the product unless it has been checked and maintained . Always ensure that the produc t is checked
and maintained on a regular basis.
Failure to do so could lead to an accident or serious injury.
Loaning or assigning your product
When loaning your product to another party, ensure that the person borrowing the product receives the operator's
manual along with it.
If you assign your product to another party , please enclose the operator's ma nual with the prod uct when handing it
over.
Failure to do so could lead to an accident or serious injury.
Users of the product
The product should not be used by:
people who are tired
people who have taken alcohol
people who are on medication
people who are pregnant
people who are in poor physical condition
people who have not read the operator's manual
children
Keep in mind that the operator or u ser is responsible for ac cidents or hazards occurrin g to other people or their pro perty.
Failure to observe these instructions could lead to an accident.
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For safe use of your product
WARNING
Vibration and cold
It is believed that a condition called Ray naud's Phe nomenon which a ffects the fin gers o f certai n individu als may be
brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning,
followed by loss of colour and numbness in the fingers. The following precautions are strongly recommended because the minimum exposure which might trigger the ailment is unknown.
Keep your body warm, especially the head and neck, feet and ankles, and hands and wrists.
Maintain good blood circulation by pe rforming vigoro us arm exerci ses during frequent work brea ks, and als o by
not smoking.
Limit the number of hours of operation. Try to fill each day with jobs where operating the trimmer or other hand-
held power equipment is not required.
If you experience discomfort redness and swelling of the fingers, followed by whitening and loss of feeling, con-
sult your physician before exposing yourself further to cold and vibration.
Failure to observe these instructions could result in damage to your health.
Repetitive stress injuries
It is believed that over-using the muscles and tendons of the fingers, hands, arms and shoulders may cause soreness, swelling, numbness, weakness and extreme pai n to the areas just mentione d. Certain repetitive hand activ ities
may put you at a high risk for developin g a repet itive stress injury (RSI). To reduc e the risk of RSI, do the follow in g:
Avoid using your wrist in a bent, extended or twisted position.
Take periodic breaks to minim ize repetitio n and rest yo ur hands. Redu ce the spee d and force in which you do the
repetitive movement.
Do exercises to strengthen hand and arm muscles.
See a doctor if you feel tingling, numbnes s or pain in y our fingers, han ds, wrists or arms. The soo ner RSI is diag -
nosed, the more likely permanent nerve and muscle damage can be prevented.
Failure to observe these instructions could result in damage to your health.
Proper training
Do not permit operation without proper training and protective equipment.
Be thoroughly familiar with the controls and proper use of unit.
Know how to stop the unit and shut off the engine.
Know how to unhook a harnessed unit quickly.
Never allow anyone to use the unit without proper instruction.
Failure to observe these instructions could result in damage to your health.
Wear proper clothing.
Secure hair so it is above shoulder length.
Do not wear ties, jewellery, or loose, dangling clothing which could be caught in the
unit.
Do not wear open toed footwear, or go bare-foot or barelegged.
Failure to observe these precautions could resu lt in damage to your sight or hearing, or lead
to a serious injury.
Wear protective gear
Always wear the following protective gear when working with the trimmer.
1. Head protection (helmet): Protects the head
2. Ear muffs or ear plugs: Protect the hearing
3. Safety goggles: Protect the eyes
4. Face shield: Protects the face
5. Safety gloves: Protect the hands from cold and vibration
6. Work clothes that fit (long sleeves, long trousers): Protect the body
7. Heavy duty, non-slip protective boots (wi th toecaps) or non-sli p work shoes
(with toecaps): Protect the feet
8. Shin guards: Protect the legs
Failure to observe th ese p recaut ion s cou ld res ult in dama ge to your s ight or heari ng, or
lead to a serious injury.
When necessary, please use the protective gear below.
Dust mask: Protects the breathing apparatus
Bee net: To deal with attacks by bees
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For safe use of your product
WARNING
Environment of use and operation
Do not use the product:
under poor weather conditions.
on steep slopes or in places which give no secure foothold and are thus slippery.
at night or in dark places with poor visibility.
When using the product on a gentle slope, work in a level, contour-like motion.
A serious injury could result if you fall or slip, or fail to operate the product correctly.
For your own health and your safe and comfortable work, operate the machine within the air temperature range of -
o
C to 40 oC.
5
Failure to observe these instructions could result in damage to your health.
Being prepared in case of an injury
In the unlikely event of an accident or injury, please ensure that you are
prepared.
First aid kit
Towels and wipes (to stop any bleeding)
Whistle or mobile phone (for calling outside help)
If you are unable to perform first aid or call for outside help, the injury could
worsen.
Put safety first in the case of fire or smoke
If fire comes from the engine or smoke appe ars from any area other tha n the exhaust vent, first distance
yourself from the product to ensure your physical safety.
Use a shovel to throw sand or other such materia l on the fi re to prev ent it from sprea ding , or put it out
with a fire extinguisher.
A panicked reaction could result in the fire and other damage becoming more extensive.
Warning notices
DANGER WARNING CAUTION
This symbol accompanied by the
word "DANGER" calls attentions to
an act or a condition which will lead to
serious personal injury or death of operators and bystanders.
Other indicators
Circle and slash symbol means whatever is
shown is prohibited.
Symbols
Symbol form/shape Symbol description/applica-
This symbol accompanied by the
word "WARNING" calls attentions to
an act or a condition which can lead to
serious personal injury or death of operators and bystanders.
This enclosed mes sage provid es tips
for use, care and mai nte nan ce of the
product.
tion
"CAUTION" indicates a potentially
hazardous situation whic h, if not
avoided, may result in minor or moderate injury.
NOTE IMPORTANT
Framed text featuring the word "IMPORTANT" contains important infor-
mation about the use, checking,
maintenance and storage of the product described in this manual.
Symbol form/shape Symbol description/applica-
tion
Carefully read the operator's
manual
Wear eyes, ears and head
protection
The maximum speed of the
cutting attachment shaft in
r/min
Keep bystanders away 15 m
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For safe use of your product
Symbol form/shape Symbol description/applica-
tion
Wear foot protection and
gloves
Emergency stop
Warning!
Thrown objects!
Warning, side thrust
Usage without shield not permitted
Symbol form/shape Symbol description/applica-
tion
Petrol and oil mixture
Choke Control "Cold Start"
Position (Choke Closed)
Choke Control "Run" Position
(Choke Open)
Carburettor adjustment
- Idle speed
U-handle
Usage of metal blades not
permitted
Usage of nylon line cutting
head not permitted
Do not use the produc t in places with poor ventilation
Beware of fire Beware of electric shocks
Loop handle
Beware of high-temperature
areas
Engine start
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For safe use of your product
Safety decal(s)
The safety decal shown below has been attached to the products described in this manual. Ensure that you understand what
the decal means before using your product.
If the decal bec omes unreada ble due to wea r and tear or damage, or peels off an d is lost, plea se purchase a replacement decal
from your dealer and attach it in the location shown in the illustrations below. Ensure that the decal is readable at all times.
1. Safety decal (Part number 890617-43130)
2. Safety decal (Part number X505-002310)
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Description
Description
1. Angle transmission Having two gears to change the
angle of rotating axis.
2. Cutting attachment Nylon line cutt ing head for cutting
grass and weed.
3. Cutting attachment 3 cutter blade for cutting grass,
garden debris and weeds.
4. Shield Device to protect the operator from accidental
contact with the cutting head and thrown objects.
5. Cut off knife Cut nylon line to adjust lin e length to proper swath.
6. Shaft tube Part of the unit that provides a casing for
power transmission shaft.
7. Loop-handle Light weight, suitable for nylon line trimmer.
8. U-handle Having the co nfi gura t io n of a bi cy c le h andle
bar to reduce working effort co mpared to a loop-han dle.
9. Suspension point Device on which the harness can
be hooked.
10. Ignition switch "Slide switch" mounted on top of the
throttle trigger housing, move switch forward to RUN,
backward to STOP position.
11. Throttle trigger Activated by the operator's finger for
controlling the engine speed.
12. Throttle trigger lockout Locks throttle trigger in the
idling position until you have a proper grip with your right
hand around the handle.
13. Air cleaner cover Covers air filter.
14. Fuel tank cap For closing the fuel tank.
15. Fuel tank Contains fuel and fuel filter.
16. Starter handle Pull handle to start the engine.
17. Silencer cover Cover the si lencer not to make operator
touch the hot surface of silencer.
18. Spark plug
19. Shoulder harness An adjustab le strap to suspend uni t.
20. Blade cover When t ransporting the u nit, use the app ropriate metal blade cover.
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Before you start
Packing list
The following parts are packed separately in the packing box.
When you have unpacked the box, please check the parts that it contains.
Contact your dealer if anything is missing or broken.
Before you start
1. Engine and shaft tube
2. Shield (for nylon line cutting head)
3. Shield (for metal blade)
4. Convex of fitting plate
5. Bolt M5×25
6. Cut off knife
7. Bolt 5×12
8. Safety goggles (ANSI Z 87.1 compliant)
9. Caution tag
10. Shoulder harness
11. Loop handle
12. Washer
13. Nylon line cutting head
14. Operator's manual
15. Locking tool
16. Socket wrench
17. L-wrench
1. Engine and shaft tube
2. U-handle
3. Shield (for metal blade)
4. Shield (for nylon line cutting head)
5. Convex of fitting plate
6. Bolt M5×25
7. Cut off knife
8. Bolt 5×12
9. Safety goggles (ANSI Z 87.1 compliant)
10. Caution tag
11. Shoulder harness
12. 3 cutter blade
13. Blade cover
14. Operator's manual
15. Handle assembling bolt
16. Washer
17. Handle assembling bracket (upper)
18. Handle assembling bracket (lower)
19. Locking tool
20. Socket wrench
21. L-wrench
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Before you start
Assembly
WARNING
Read the operator's manual carefully to ensure that you assemble the product correctly.
Using a product that has been incorrectly assembled could lead to an accident or serious injury.
Loop handle version
Loop handle assembly
Assemble loop handle (A) and bracket (C) to drive shaft assembly.
Position handle in comfortable operating position and tighten
Bolts (B).
E: Arrow F: To engine
CAUTION
Install the handle so that it does not hide any of the
safety decals.
Installation of shield
Method to change shield
1. Fit bracket (A) to mounting porti on of angle transmissi on and
fix the bracket by holding fitting plate (B) pressed from beneath and tighten 4 bolts (M5×25) (C) lightly.
2. Get notches (D) and convex es of f itting p late (E) to face corresponding convexes and concaves of bracket, and fix
bracket tightening 4 bolts (M5×25) securely.
3. Fit cut off knife (F) to the shi eld for nylo n line cutting head using screw (5×12) (G).
There are two types of shields : namely one used exclusively
for nylon line cutting head and another one used exclusively
for metal blade. When metal blade is used, use the shield for
metal blade.
1. Remove bolt (M5×20 ) (A) on the right side of the shield and
slide the shield to th e left and remove it. Pu t shield of another
type (B) into groove and slide it to the right until it st ops and
be sure to fasten with the removed bolt (M5×20).
Installing nylon line cutting head
CAUTION
Fix output shaft securely using locking tool in order to
prevent it form rotating when nylon cutting head is
mounted.
1. Insert locking tool into a hole located on the right side of an gle transmission wh ile forcing retainer s pring to the left side.
2. Insert locking tool further int o blade retaine r f ixing s lot (A) to
fix output shaft.
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U-handle version
U-handle assembly
Before you start
3. Thread nylon line cutting head (B) onto s haft (anticlock wise)
until it is tight.
4. Remove locking tool (C).
1. Install handle assembling bracket (upper) (A) in handle assembling bracket (lower) (D) and fix handle by tightening
handle assembling bolt (8 mm) (B) lightly.
2. Adjust inclination of handle to adequate posi tion (easy to operate) and tighten firmly handle assembling bolt.
C: Washer
E: Arrow
F: To engine
CAUTION
Install the handle so that it does not hide any of the
safety decals.
3. To eliminate loosening of throttle wire (I), fix it to shaft tube
(H) (2 places) and to right hand U-handle (1 p lace) with wire
fixing clips (G).
CAUTION
After assembly, adjust the play of wire end (J) on c arburettor (L) side to 1 mm - 2 mm.
K: Nuts
Installation of shield
1. Fit bracket (A) to mounting porti on of angle transmissi on and
fix the bracket by holding fitting plate (B) pressed from beneath and tighten 4 bolts (M5×25) (C) lightly.
2. Get notches (D) and convex es of f itting p late (E) to face corresponding convexes and concaves of bracket, and fix
bracket tightening 4 bolts (M5×25) securely.
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Before you start
Method to change shield
There are two types of shields : namely one used exclusively
for nylon line cutting head and another one used exclusively
for metal blade. When using nylon line cutting head, use the
shield for nylon line cutting head.
1. Remove bolt (M5×20 ) (A) on the right side of the shield and
slide the shield to th e left and remove it. Pu t shield of another
type (B) into groove and slide it to the right until it st ops and
be sure to fasten with the removed bolt (M5×20).
2. Fit cut off knife (C) to the shield for nylon line cutting head
using screw (5×12) (D).
Installing blade
WARNING
Wear heavy duty gloves when working with the trimmer blade.
When replacing the trimmer blade durin g a trimming task, ens ure that the engine is sw itched off and that the blades
have stopped.
When turning the product over to replace the trimmer blade, ensure that the fuel tank cap is securely in place.
Do not attempt to fit the trimmer blade with one hand or without us ing the sock et spa nne r. Fit the trim mer bla de accurately using the supplied socket spanner and tighten firmly in position.
Do not use any tools other than the provided socket spanner to tighten the blade; a pneumatic or electric tool may
tighten the blade more than necessary and cause the nut or the output shaft to break.
If worn nut and cup for blade are used, there is a danger of blade getting loose. Replace them with new one.
Failure to do so could lead to an injury or serious accident, or cause a fire.
1. Inspect blades (C) before inst allati on. Ch eck for sha rpne ss.
Dull blades increase the risk of blade kickback reactions.Small cracks can develop into fractures resulting in a
piece of blade flying off during operation. Discard cracked
blades no matter how small the crack.
2. Securely tighten the blade retainer (B), blade, lower blade
retainer (D), cup (E), and nut (F) by hand.
3. Insert locking tool (G) int o a hole l ocated on the right s ide of
angle transmission while forcing retainer spring to the left
side.
4. Insert locking tool further int o blade retaine r f ixing s lot (A) to
fix output shaft.
CAUTION
Fix output shaft securely using locking tool in order to
prevent it form rotating when blade is mounted. Otherwise, the blade faste ning nut will not be tighte ned s ufficiently.
5. Tighten the nut (turn anticlockwise) using a socket wrench
(H). Never fasten whi le app lying your w eight . Other wise the
thread of nut could be broken.
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Before you start
Adjusting the balance
Adjusting the shoulder harness
WARNING
This product is designe d to fit a wide variety o f body s izes, but may not be a djustab le for extreme ly tall p erson s. Do
not use the unit if your feet can reach the cutting attachment when the unit is attached to the harness.
IMPORTANT
A person's size can affect the balancing adjustment. Also the balancing procedure may not work with some units on some
persons. If the shoulder harness does not fit you or cannot be adjusted well, please ask your dealer for assistance.
The accompanying shoulder harness is suitable for peopl e of
standard adult physique, who are 150 cm - 195 cm in height
and 60 cm - 140 cm in waist size.
Use a shoulder harness when provided or when recommend-
ed in this manual. Adjust both harness and the suspension
point (A) on the unit so the unit hangs with the cutting attachment a few centimetres above ground level (B).
The cutting attachment and shield should be level in all direc-
tions. Harness the unit on the right side as shown.
Balance tool for a level plane of cutting head rotation
Slide suspension point up and down the tube to find the right
balance. Rotate th e cla mp to level the c utting attach ment a nd
shield. Lock in position. If the suspension point is a free-spinning type, the unit may tend to roll over sideways, however,
you should still level the attachm ent and shie ld on the front-to rear axis.
Balancing and levelling, as above, may require relocation of
the clamp and readjustm ent of the harne ss straps. Also, each
type of cutting at tachment and sh ield mounted on the unit may
require balancing.
CAUTION
Do not install the suspension point to be located fa rther
from you than the arrow mark ( ).
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Before you start
Preparing the fuel
DANGER
Do not fuel up while the engine is hot or in operation.
Do not smoke or hold a flame near when refuelling.
If you do so, the fuel could ignite and cause fire, leading to burns.
WARNING
Do not fill fuel tanks indoors. Alw ays fill fuel tanks outdoor s over bare ground. Do not refu el the product o n the loading platform of a truck, or in other such places.
Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
Otherwise, fuel may get spewed.
Mop up any fuel that overflows or spills out due to overfilling.
Fuel spills can cause fire and burns when ignited.
After refuelling, always check that there are no leaks or discharges of fuel from the fuel pipe , fuel system grommets,
or around the fuel tank cap . If you do find fuel leaks or discharges, stop using the produc t immediately and cont act
your dealer to have it repaired.
Any fuel leaks could cause fire.
Keep the refuelling tank in a shaded area away from fire.
Use an approved fuel container.
IMPORTANT
Fuel is a mixture of regular grade petrol an d an air-cooled 2-stroke engine oil of reputa bl e bra nd n am e. M in imum 89 O c tan e
unleaded petrol is recommended. Do not use fuel containing methyl alcohol or more than 10 % of ethyl alcohol.
Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days.
Fuel
Recommended mixture ratio; 50 : 1 (2 %) for ISO-L-EGD
Standard (ISO/CD 13738), JASO FC,FD grade and ECHO
Premium 50 : 1 oil.
Do not mix directly in engine fuel tank.
Fuel supply
Do not add so much fuel that it reaches the mouth of the fuel
tank (A). Keep the fuel within the prescribed level (up to the
shoulder level (B) of the fuel tank).
Tighten the fuel tank cap securely after refuelling.
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Engine operation
Engine operation
Starting the engine
WARNING
Be particularly careful to observe the following precautions when starting the engine:
Move at least 3m from the place where you refueled.
Place the product in a flat, well ventilated place.
Check that there are no fuel leaks.
Inspect metal blades for cracks.
Check that none of the nuts and bolts are loose.
Leave plenty of space around the product and do not allow people or animals near it.
Start the engine with the throttle trigger in the idle speed position.
Hold the product firmly to the ground when starting the engine.
Failure to observe the precautions could cause an accident or injury, or even lead to a fatality.
Check that there are no abnormal vibrations or sounds once the engine starts. Do not use the product if there are
abnormal vibrations or sounds. Contact your dealer to have it repaired.
Accidents involving parts that fall or shatter off can cause wounds or serious injury.
The exhaust fumes from the engi ne contain toxic gases. Do not opera te the product indoo rs or in other
ill ventilated places.
The exhaust fumes could cause poisoning.
Do not touch silencer, spark plug, angle transmission, and other high temperature components while
the product is running or for some time after it stops.
You could burn yourself if you touch a high temperature component.
Do not touch spark plug, spark plug wire, and other high voltage components while the product is run-
ning.
You could receive an electric shock if you touch a high voltage component while the product is running.
If the cutting attachment rotates even though the throttle trigger is in the idle speed position when the eng ine is started, adjust the carburettor before using the product.
Failure to observe the precautions could cause an accident or injury, or even lead to a fatality.
When starting engine using throttle latch, cutti ng attachment rota tes. After engine starts, pull throttle trigger slightly
to release throttle latch immediately. Never use throttle latch for operation.
The rotating blade can cause injury.
NOTE
Pull out the starter grip gently at first, and then more rapidly. Do not pull the starter rope out to more than 2/3 of its length.
Do not let go of the starter grip as it returns.
Starting a cold engine
(Connect the spark plug cap if the produ ct has been i n storage for
a long period of time.)
1. Remove the blade cover.
2. Placing the produc t on level ground, check to ensure that the
cutting attachment does not come into contact with the surface of the groun d or a ny other im pediment using a beam or
other such implement.
3. Move the ignition switch (A) to the Start position.
4. Make sure that the throttle trigger (D) is at the idle speed position.
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Engine operation
5. Move the choke lever (F) to the "Cold Start" (E) position.
6. Alternately press an d release the purge bu lb (H) until the fuel
is sucked up into it.
7. Checking that the area aro und yo u is s afe, ho ld the posit ion
closest to the engine firmly as shown in the illustration, pulling several times on the starter grip (I).
8. If you hear an explosion-like sound and the en gine stops immediately, move the choke lever to the "Run" (G) position
and continue pulling on the starter grip to start the engine.
9. If the engine does not stop, return the choke lever gently to
the "Run" position.
10. Leave the engine to warm up at idle speed for a while.
∗ When eng ine is hard to s tart, use thro ttle lat ch (C). ( Pull thro t-
tle trigger fully and lower throttle latch while pressing throttle
trigger lockout (B) and relea se throttl e trigger to activa te throttle latch. After engine starts, pull throttle trigger slightly to release throttle latch immediately.)
Starting a warm engine
Stopping the engine
1. Move the ignition switch (A) to the Start position.
2. Make sure that the throttle trigger (D) is at the idle speed position.
3. Check that the choke lever is in the "Run" position.
4. If no fuel is visible in the purg e bulb, alterna tely press a nd release the purge bulb until the fuel is sucked up into it.
5. Checking that the area aro und yo u is s afe, ho ld the posit ion
closest to the engine firmly, and pull on the starter grip to
start the engine.
1. Move the throttle trigger (B) to the idle speed position and set
the engine to idling (i.e. low speed).
2. Move the ignition switch (A) to the Stop position.
3. In the event of an emergency, stop the engine immediately
using the ignition switch.
4. If the engine fails to stop, move the choke lever to t he "Co ld
Start" position. The engine will stall and come to a halt (an
emergency stop).
∗ If the e ngine fails to stop w hen the ignition sw itch is used, have
the ignition switc h checked and rep aired by your de aler before
you use the product again.
5. Always disconnect the spark plug wire from the spark plu g to
ensure the engine cann ot be st arted before y ou work on th e
unit or leave it unattended.
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Trimming operation
Trimming operation
DANGER
Always stop the engine when a cutting attachment jam occurs.
Severe injury can occur if a jam is removed and the cutting attachment suddenly starts.
Do not operate the product without the shield in place.
Any objects that ricochet off the cutting attachment could cause an accident or serious injury.
The area within a 15 m radius of the product is a dang er zone. Be care ful to observe the following precautions while working with the product.
Do not allow children and other people or pets to enter the danger
zone.
If another person enters the danger zone, turn off the engine to stop
the cutting attachment from rotating.
When approaching the operator, signal to him by, for example,
throwing twigs from outside the danger zone, and then check that
engine has been switched off and the cutting attachment has
stopped turning.
If more than one person is working with the product, identify the way
in which you will signal to each other and work at least 15 m apart.
Any objects that ricoc he t off the cu tting attachment, and any contact with the cu ttin g a ttac hm en t, could cause blindne ss or a
fatal accident.
WARNING
Before starting work, check the a rea where you will be working and remove a ny small stones
and empty cans likely to ricochet off the cutting attach men t, as w ell as any pie ces of stri ng
or wire that might become twisted around the cutting attachment.
An accident or serious in jury can occur if foreign objects ricoch et off the cutting attach ment or wire
and other materials twisted round the product spring off it.
In the following situations, turn off the engine immediately and ensure that the cutting attachments have stopped
before checking each area of the product. Replace any damaged parts.
If the cutting attachment hits a rock, tree, post, or other such obstruction while you work.
If the product suddenly starts to vibrate abnormally.
Continuing to use parts when they are damaged could lead to an accident or serious injury.
Do not hold the cutting attachment up while yo u work. You must not work with the cu tting attachments raise d above
knee level.
Raising the cut ting a ttachm ent a bove knee lev el bri ngs t he pl ane o f rotat ion c loser to the face, and any o bject s tha t fly off t he
cutting attachments could cause an accident or serious injury.
Transport of the product
When transporting in the situations described below, turn off the engine and ensure that the trimmer blade has
stopped rotating, then fit the trimmer blade cover and position the silencer away from yourself.
Moving to the place where you are working.
Moving to another area while you are working.
Leaving the place where you have been working.
Failure to observe these precautions could cause burns or serious injury.
When transporting the product by car, empty the fuel tank, fit the blade cover, and secu re the product firmly in place
to prevent it from moving around.
Travelling by car with fuel in the fuel tank could lead to a fire.
Never attempt to operate the product with one hand.
Ensure that you hook your thumbs a round th e grips , w rappin g them in your
thumb and remaining fingers.
17
Page 18
Trimming operation
Using shoulder harness
Always mount the trimmer correctly using the shoulder harness.
Buckle waist belt. Belt should be snug.
Attach product to harness.
Loop handle version
Place shoulder harness over left shoulder and adjust
straps so the quick rele ase pin rests just below the waist.
U-handle version
Place shoulder harn es s over both shoulders and adj us t
straps so the connecting point latches as shown.
Check for correct adjust ment by moving cutting attachme nt
along ground.
Re-adjust position of suspension point if necessary.
The shoulder harness is fitted with an emergency release
function. In the event of a fire or other emergency, pull the
quick release pin (A) up to release the product from your
body.
Basic trimming operation with nylon line cutting head
WARNING
Serious injury may result fro m the improper use of cu tting attach ment. Read and com ply with all safe ty instructio ns
listed in this manual.
Use only cutting attachments recommended by YAMABIKO CORPORATION.
Excessive nylon line beyond cut off knife could fly off when the nylon line cutting head starts rotating after adjustment of nylon line length.
Failure to do so could lead to an accident or serious injury.
Adjusting nylon line
Trimming
Do not rotate the nylon line cutti ng head at more than 10000 r/
min.
When releasing nylon line from spool, hit tap knob of spool
against the gro und surface lightly at rotati on spee d lower th an
4500 r/min.
Cut off knife on th e s hie ld a dju sts cutting swath au tom ati cal ly
by cutting nylon lines evenly when attachment starts rotating.
When operating with less than maximum cutting swath, cut
two nylon lines in equal lengths.
1. Tap knob
2. Hit knob against the ground surface lightly
3. Nylon line comes out
This is feeding the trimmer caref ully into the mater ial you wish
to cut. Tilt the head sli ghtly to direct the d ebris away fr om you.
If cutting up to a barri er such as a fence , wall or tree, approach
from an angle where any debris rico cheting off the barri er wi ll
fly away from you.
Move the nylon line cutting head slowly until the grass is cut
right up to the barrier, but do not jam (overfeed) the line into
the barrier. If trimming up wire mesh or chain link fencing, be
careful to feed only u p to the wire. If y ou go too far, th e line will
snap off around the wire.
Trimming can be done to cut through weed stems one at a
time. Place the nylon line cu ttin g hea d near the bottom of the
weed never high up, which could cause the weed to chatter
and catch the line. Rather tha n cut the weed right through, jus t
use the very end of the line to wear through the stem slowly.
1. Angle to wall
2. Debris
3. Knife side raised
4. Angle to ground
18
Page 19
Scything
Scalping and edging
Trimming operation
This is the cutting or mowing of large grassy areas by sweep-
ing or swinging the trimmer in a level arc. Use a smooth, easy
motion. Do not try to ha ck or c ho p d own the grass. Tilt the ny lon line cuttin g hea d to d irect the de bris a way from you o n the
scything stroke. Then return wit hou t cutt ing gras s for an other
stroke. If you a re well protected and do not ca re whether some
debris is thrown in your direction, you may scythe in both directions.
Both of these are done with the nylon line cutting head tilted at
a steep angle. Scalp ing (A) is removing top growth, leaving the
earth bare. Edging (B) is trimming the grass back where it has
spread over a pavem ent o r drive way. During both ed ging a nd
scalping, hold the unit at a steep angle in a position where the
debris, and any dislodged dirt and stone, will not come back
towards you even if it ricochets off the hard surface.
Although the pictures show how to edge and scalp, every op-
erator must find for himself the angles which suit his b ody size
and cutting situation.
For nearly all cutting, it is good to tilt the nylon line cutting he ad
1
2
so that contact is m ade on th e part of li ne circle where th e line
is moving away from you and the shield (See appropriate picture). This results in the debris being thrown away from you.
Tilting the head to the wron g side wil l shoot the debris to ward
you. If the nylon line cutting head is held flat to the ground so
that cutting occurs on the whole line circle, debris will be
thrown at you, drag wil l slow th e engine, an d you will us e up a
lot of line.
Nylon line cutting head rotates ant iclockwise . The knife wi ll be
on the left side of the shield.
1. Debris
2. Cut on this side
Do not push the line into tough weeds, trees, or wire fences.
Pushing the line into chicken wire, chain link fencing or thick
brush can result in snapp ed-off lin e ends be ing hurled back at
the operator. The proper way is to cut right up to a barri er, such
as any of those mentioned, but never run the line into or
through the obstruction. Do not cut closely to obstruction or
barrier.
Avoid nylon line contact with broken wire fencing. Pieces of
wire broken off by the trimmer can be hurled at high speeds.
19
Page 20
Trimming operation
Basic trimming operation with metal blade
WARNING
Please observe the following instructions when trimming.
Check to ensure that the trimmer blade has been tightened securely in place.
Replace the shield if it is damaged or cracked.
Replace the trimmer blade nut when it becomes worn.
Do not cut into the ground with the blade.
Do not operate with a dull, bent, fractured or discoloured blade and worn or damaged nut.
Do not run engine at full throttle without a load.
Failure to do so could lead to an accident or serious injury.
Use only cutting attachments recommended by YAMABIKO CORPORATION.
The type of blade used must be matched to the type and size of material cut. An improper or dull blade can cause
serious personal injury. Bl ades must be sharp. Dull bla des increase the cha nce of kick-out and injury to you rself and
bystanders.
Plastic/Nylon Grass/Weed Blades may be used where ever the nylon line head is used. Do not use this blade for
heavy weeds or brush.
The 3 cutter blade is designed espec ially to cut weeds and grass. To avoi d injury due to kickback or blade fract ure,
do not use the 3 cutter blade to cut brush or trees.
8 Tooth Weed/Grass Blade is designe d for grass, garden deb ris and thick weeds. Do not use this blade for brus h
or heavy woody growth, 19 mm diameter or larger.
22 Tooth Clearing Blade is designed for dense thickets and saplings up to 64 mm diameter.
80 Tooth Brush Blade is designed for cutting brush and woody growth up to 13 mm diameter.
Damaged or shattered blades can cause accidents and serious injury.
Kickback
The phenomenon that occurs if the trimmer blade co mes into
contact with a tree, post, rock or other hard object while rotating at high speed and reacts by recoiling powerfully and
instantaneously is known as kickback.
Causing kickback can result in a loss of control over the
product and is highly dangerous.
In particular, if the front-right quadrant of the trimmer blade
(B) strikes a shrub or other such object, the trimmer blade
will cause the product to recoil sharply backwards to the
right.
To prevent kickback, do not trim from left to right. Be careful to ensure that the trimmer blade does not strike any
hard objects.
When trimming, ensure that the object you are cutting meets the portion of the blade 1/3 in from the front edge on
the left-hand side (A).
Failure to do so could cause an injury or fatal accident.
Scything weeds
This is cutting by swinging the cutting attachment in a level
arc. It can quickly clear areas of field grass and weeds. Scything should not be used to cut large, tough weeds or woody
growths.
If a sapling or shrub binds the cutting attachment, do not use
the cutting attachm ent as a lever to free the bin d, because this
will cause cutting attachment failure.
Instead, shut off the engine and push the sapling or shrub to
free the blades.
20
Page 21
Maintenance and care
Maintenance and care
WARNING
Observe the following precautions when checking and maintaining your product after use:
Turn the engine off and do not attempt to check or maintain the product until the engine has cooled.
You could burn yourself.
Remove the spark plug cap before performing checks and maintenance.
An accident could occur if the product starts unexpectedly.
IMPORTANT
Checking and maintenance requires specialis t knowled ge. If you are unabl e to check and maintain the produc t or deal with a
fault yourself, consult your dealer. Do not attempt to dismantle the product.
Servicing guidelines
Area Maintenance Page Before use Monthly
Air filter Clean/Replace 21 •
Fuel filter Inspect/Clean/Replace 22 •
Spark plug Inspect/Clean/Adjust/Replace 23 •
Carburettor Adjust/Replace and adjust 22 •
Cooling system Inspect/Clean 22 •
Silencer Inspect/Tighten 23 •
Silencer Clean 23 •**
Angle transmission Grease 24 •*
Starter Inspect - •
Cut off knife Inspect/Clean - •
Fuel system In spect 22 •
Screws, bolts and nuts Inspect, Tighten/Replace - •
* Or 50 hours, whichever occurs first. ** Or 100 hours, whichever occurs first.
IMPORTANT
Time intervals are maximum. Actual use and your experience will determine the frequency of required maintenance.
Maintenance and care
If you have any questions or problems, please contact your dealer.
Cleaning air filter
1. Close choke. Loosen air cleane r cover knob and re move air
cleaner cover (B).
2. Remove air filter (A) (air filter is located inside air cleaner
cover).
3. Brush dirt from filter or clean with compressed air.
4. Reinstall air filter with cove r, after ins talli ng air fil ter to co ve r.
5. Tighten air cleaner cover knob.
21
Page 22
Maintenance and care
Replacing fuel filter
1. Use a piece of metal wire or the like to pick up fuel filter (A)
through fuel tank opening.
2. Pull old filter from fuel line (B).
3. Install new fuel filter.
NOTE
If filter is excessive dirty or no longer f its properl y, replac e it.
Carburettor adjustment
WARNING
When the carburettor is being adjusted, the cutting attachment may move. Be careful not to get injured.
CAUTION
When starting, idle speed adjustment screw (T) should be adjusted not to rotate the cutting attachment.
When there is some trouble with the carburettor, contact your dealer.
Every unit is test run at the factory and the carburettor is fine
tuned for maximum performance.
Before adjusting carburettor, clean or replace air filter, start engine and run several minu tes to bring i t to operating temperature .
To adjust the carburettor proceed as follow:
Turn "idle" speed a djustment scre w (T) clockwise u ntil cutting
atttachment begins to turn, then turn screw(T) out anticlockwise until cutting attachment stops turning. Turn screw (T)
out, anticlockwise, and additional 1 turn.
Cooling system maintenance
IMPORTANT
To maintain proper engine operating temperature, cooling air must pass freely through the cylinder fin area. This
flow of air carries combustion heat away from the engine. Overheating and engine seizure can occur when:
Air intakes are blocked, preventing cooling air from reaching the cylinder.
Dust and grass build up on the outside of the cylinder. This build-up insulates the engine and prevents the heat
from leaving.
Removal of cooling passage b lockages or cleanin g of cylin der fins is considere d "Norma l Maintena nce". Any re sulta nt failure
attributed to lack of maintenance is not warranted.
22
Page 23
Cleaning silencer
Maintenance and care
Remove dust and dirt from between fins (A).
Before each use, remove accum ulated de bris from bottom en -
gine intake grille located between the fuel tank and starter.
Air intake
1. Remove the silencer cover.
2. Remove the spark arrester screen cove r (C) and the scree n
(B) from the silencer body.
3. Clean carbon deposits from silencer components (A).
4. Replac e the screen if it is cracked, or has hole s burned
through.
5. Assemble the components in reverse order.
Check fuel system
Check spark plug
NOTE
Carbon deposits in silencer will cause drop in engine out-
put.The spark arrester scre en must be checked pe riodically.
Check before every use.
After refuelling, make sure fuel does not leak or exude from
around fuel pipe (A), fuel grommet (B) or fuel tank cap (C).
In case of fuel leakage or exuda tio n, there is a danger of fire.
Stop using the machine im me dia tely and request your deal er
to inspect or replace.
1. Check plug gap. Correct gap is 0.6 mm to 0.7 mm.
2. Inspect electrode for wear.
3. Inspect insulator for oil or other deposits.
4. If the electrodesor termina ls are wo rn, o r if th ere a re c rac ks
in the ceramics, replace them with new parts.
5. Tighten to 15 N·m - 17 N·m (150kgf·cm to 170 kgf·cm).
∗ The spark test (for checking whether the spark plug is spark-
ing) must be carried out by your dealer.
a:0.6‑0.7mm
23
Page 24
Maintenance and care
Angle transmission
Checking the blade
1. Remove the plug (A) and drain screw (B) from the angle
transmission (C).
2. Add grease into the tran sm is si on u nti l ol d g reas e i s p us hed
out. If necessary, use a low pressure pump.
NOTE
Use good quality lithium multi grease.
3. Reinstall the drain screw and plug.
Use only blade designa ted for this model by the ma nufacturer.
When a crack i s noticed o n the blade, do not use it but repla ce
with a new one.
Ensure that the blade is correctly fitt ed in acco rdance wi th the
instructions.
Checking the nylon line cutting head
When the cutting blad e becomes dull due to wear re verse it for
further use.
When chip or bend occurs on the blade, vibration w ill increase.
Replace with new one.
When filing the blade fil e 3 cutting edges evenly usi ng a flat file
as shown in the illu stration. Othe rwise, the bala nce will be los t
and vibration will increase.
1. Make sure each periphery of the 2 retaining pawls of housin g
spreads almost fully up to the oute r perip hery of the respective cover window.
2. Check mount of cutting head on trimmer and tighten if i t is
loose.
3. Check the cutter head for deflecti on or abnorm al noise rotating it by hand. Deflection or abnormal noise can cause abnormal vibration to occur or mount to trimmer to loosen
during rotation which is dangerous.
4. Inspect cover and tap kn ob fo r wear. When slot appears on
bottom of the tap knob o r when slot appears on cov er bottom
close to outlet for nylon line, replace them with new parts
without fail.
5. Check the cutting head for crac k or chip . Replac e parts tha t
show any crack or chip with new ones without fail.
24
Page 25
Maintenance and care
Replacing nylon line
DANGER
Shut down trimmer engine without fail and make sure nylon line cutting head has stopped rotating before starting
replacement procedure.
To do so could lead to an accident or serious injury.
WARNING
Use only flexible, non-metallic line recommended by YAMABIKO CORPORATION.
Failure to do so could lead to an accident or serious injury.
1. Press "retaining pawls" (at two places) inward and remove
cover. It is easier to remove one after another.
2. Remove spool.
3. When nylon line on the spool is almost exhausted, remove
remaining line from spool and wind "new line" according to
the procedures (4) and beyond. When the line on the spool
is "melted and stuck " remove the e ntire line wh ile peeling of f
the "melted and stuck" portion and wind the "removed line"
anew according to procedures (4) and beyond.
4. Bend the line at the point 12 cm away from the middle of
whole length and ho ok the bent portion in to the "notch" of the
intermediate separator.
5. Wind the line firmly into groove of the spool following "winding direction for the line LH".
6. When the line is wound to the end, tentative ly hook both line
ends into respective notch of spool, leaving line ends approximately 10cm beyond notch.
7. Align notches of spool for the line with grooves of eyelets
and fit spool into cover.
8. Pull out the line from cover. (A) Remove the line from "respective notch of spool", and (B) pass it through "groove of
respective eyelet".
25
Page 26
Maintenance and care
9. Fit cover and housing together. (C) Align "eyelets" of cover
with "recesses" of housing, and (D) press pawls of housing
into respective window of cover until the pawls are firmly fitted into the windows.
DANGER
Make sure each outer periphery of pawls of housing
spreads almost fully up to the outer periphery of respective window of cover.
If they are loosely fitted and th e cutting head is turned, co ver
or inside components can fly off which is dangerous.
Troubleshooting table
IMPORTANT
For spare parts and consumables, please use only genuine parts and designated products and components.
Using parts from other manufacturers or non-designated components may result in a malfunction.
Problem Diagnosis Cause Solution
The engine does
not start
1. There is no fuel in the fuel tank
2. The stop switch is in the Stop position
3. Excess fuel suction
4. Electrical fault
5. Carburettor malfunction or internal sticking
6. Internal engine malfunction
1. Fuel supply
2. Move to the Start position
3. Start the engine after
servicing
4. Consult your dealer
5. Consult your dealer
6. Consult your dealer
Engine is difficult to
start, fluctuating rotation
Engine starts but
no acceleration is
possible
The engine stops 1. Carburettor adjustment problem
The engine fails to
stop
Cutting attachment
rotates when the
engine is idling
Fuel is entering the overflow
pipe
No fuel is entering the overflow pipe
The spark plug is dirty or
damp
1. Fuel degradation
2. Carburettor problem
1. Fuel filter is clogged
2. Fuel system is clogged
3. Internal carburettor parts sticking
1. Fuel degradation
2. Incorrect electrode gap
3. Carbon deposits
4. Electrical fault
1. Dirty air filter
2. Dirty fuel filter
3. Blocked fuel passage
4. Carburettor adjustment problem
5. Blocked exhaust vent or silencer vent
2. Electrical fault
1. Stop switch malfunction 1. Perform an emergen-
1. Carburettor adjustment problem
2. Damaged clutch spring
1. Replace with new fuel
2. Consult your dealer
1. Clean or replace
2. Consult your dealer
3. Consult your dealer
1. Replace
2. Replace
3. Replace
4. Consult your dealer
1. Clean or replace
2. Clean or replace
3. Consult your dealer
4. Adjust
5. Clean
1. Adjust
2. Consult your dealer
cy stop and consult
your dealer
1. Adjust
2. Consult your dealer
Consult your dealer in the event of a problem that is not covered in the table above, or other such concerns.
Please contact your dealer in order to dispose of the product or its parts in compliance with national laws.
26
Page 27
Maintenance and care
Storage
Long-term storage (30 days or more)
WARNING
Do not store in sealed locations filled with fuel gas, or close to naked flames or sparks.
You could cause a fire.
When storing the p roduct for long periods of time (30 days or more ), ensure that th e following prep arations for sto rage are carried
out.
1. Remove any fuel from the fuel tank.
2. Alternately press and release the purge bulb a number of
times to remove the fuel from the purge bulb.
3. Start the engine and run it at idle speed until it comes to a
natural stop.
4. Move the ignition switch (A) to the Stop position.
5. Once the product is sufficiently cool, wipe clean any grease,
oil, dust, dirt and other materials on the outside of the trimmer.
6. Perform the periodic checks prescribed in this manual.
7. Check that the screws and nuts are tightened. Tighten up
any that are loose.
8. Remove the spark plug (B) and add th e appropriate qu antity
(around 10 mL) of clean, new 2-stroke engine oil to the cylinder via the installation socket.
9. Place a piece of clean cloth over the spark plug installation
socket.
10. Pull 2 or 3 times on the starter grip to distribute the eng ine oil
into the cylinder.
11. Observe the piston loca tion through the spark plug hole. Pu ll
the recoil starter handle slowly until the piston reaches the
top of its travel and leave it there.
12. Fit the spark plug. (Do not connect the spark plug cap (C). )
13. Fit the blade cover onto the trimmer blade and wrap the engine section in a pla stic bag or other c overing, and st ore in a
dry, dust- free location out of reac h of children.
27
Page 28
Specifications
Specifications
SRM-236ES
LU
External dimensions:
Length × Width × Height mm 1770 × 340 × 330 1775 × 710 × 395
Mass:
Unit without cutting attachment and shield (ISO 11806)
Unit with fuel, specified cutting attachment, shield and
harness
Volume: Fuel tank L 0.44
Cutting attachment:
Nylon line cutting head
Line diameter
Line length
Thread
Specified blade diameter
Specified blade thickness
Number of cutting teeth
Blade centre hole diameter
Blade rotational speed at maximum allowable engine
speed
Gear ratio: Gear ratio and lubrication 1.36 reduction and good quality lithium grease
kg
kg
mm
m
mm
mm
mm
r/min
4.9
6.2
F4
3.0
2 ×1 line
Left-handed M10×1.25
5.6
7.2
230
3.0
3
25.4
8235
Rotational direction of output s haft s ee n from above: Anticlockwise
Engine:Type Air cooled 2-stroke single cylinder
3
)
Engine displacement
mL (cm
21.2
Maximum shaft brake power, measured in accordance
with ISO 8893
Recommended engine idling speed
Engine speed at maximum engine power
Recommended maximum engine speed (With STD at-
kW
r/min
r/min
r/min 9500 11200
0.71
3000
8000
tachment installed)
Carburettor
Ignition
Spark plug
Starter
Clutch
Fuel:
Diaphragm type
Flywheel magneto - CDI system
NGK BPMR8Y
Recoil starter
Automatic centrifugal clutch
Regular grade petrol. Minimum 89 Octane unleaded
petrol is recommended. Do not use fuel containing methyl alcohol or more than 10 % of ethyl alcohol.
Oil
Two stroke, air-cooled engine oil. ISO-L-EGD Standard
(ISO/CD 13738), JASO FC, FD grade and EC HO Premium 50 : 1 oil.
Ratio
Fuel consumption at maximum engine power
Specific fuel consumption at maximum engine power
L/h
g/(kW•h)
50 : 1 (2%)
0.45
469
Vibration levels: (ISO 22867)a
Sound pressure level: (ISO 22868) L
Guaranteed sound power level:(ISO 22868) L
hv,eq
pAeq
WA
These specifications are subject to change without notice.
2
m/s
m/s
2
Front handle 4.6
Rear handle 4.1
Right handle 4.1
Left handle 3.7
dB(A) 92.9 93.0
dB(A) 107 108
28
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1Notes and rear co ver
MEMORANDUM
2012
X772-000911
X772227-6301
29
Page 30
MEMORANDUM
2012
X772-000911
X772227-6301
30
Page 31
MEMORANDUM
2012
X772-000911
X772227-6301
31
Page 32
7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN
PHONE: 81-428-32-6118. FAX: 81-428-32-6145.
©
2012
X772-000911
X772227-6301
Printed in Japan
1209A 0556 ES
32
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