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25.4cc
GASOLINE CHAIN SAW
SKU:31212
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Read operator's instruction
book before operating this
machine.
Wear head, eye and ear
protection.
Use the chain saw
with two hands.
Read, understand and
follow all warnings.
Never touch hot surface.
WARNING!!!
RISK OF DAMAGING HEARING
Wear head, eye and ear protection.
Warning! Danger of
kickback.
Use appropriate protections
for foot-leg and hand-arm.
This saw is for trained tree
service operators only.
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For safe operation
WARNING
This ch ainsaw has be en especially designed for tree
maint enance a nd shou ld there fore onl y be used by
trained operators when working on trees.
1. Never operate a chain saw when you
are fatigued, ill, or upset, or under the
infl uence of m edicati on th at ma y
make you drowsy, or if you are under
the influence of alcohol or drugs.
2. Use safe ty f ootwea r, snug fittin g
clothing and eye, hearing and head
protection devices.
Use the vibration-proof glove.
3. Keep th e saw chain sharp and th e
saw, incl uding the AV system, well
maintained. A dull chain will increase
cutt ing t ime, and p ressing a d ull
chain throu
gh wood will increase the
vibrations transmitted to your hands.
A saw with loose components or with
damaged or worn AV buffers will also
tend to have higher vibration levels.
4. Always u se caution wh en handling
fuel. Wipe up all spills and then move
the chain saw at least 3 m from the
fueling point before starting the engine.
5. Elimi nate al l sourc es of sparks or
flame (i.e. smoking, open flames, or
work tha t can cause sparks) in th e
areas whe re fuel is mixe d, poured,
or stored.
6. Do not smoke while handling fuel or
while operating the chain saw.
7. Do not allow o
8. Never star t cutting until y ou have a
9. Always hold the chain saw firmly with
ther persons to be near
the chain saw when starting or cut ting. Keep bystanders and anima ls
out of the work area. Children, pets
and bystanders should be a minimum
of 10 m away when you start or operate the chain saw.
clear work area, secure footing, and
a planned retreat pat h from the falling tree.
both hands when the engine is running. Use a firm grip with thumb and
fin gers encir cling the cha in s aw
handles.
10. Keep all parts of your body aw
the saw chain when the engine is running.
11. Before yo u start the engine , make
sure the saw chain is not contacting
anything.
12. Always carry the chain saw with the
engine stopp ed, the guide bar and
saw chain to the rear, and the muffler
away from your body.
13. Always inspect the chain saw before
each use for w orn, Ioos e, or dam aged par ts. Never op erate a chain
saw that is da maged, improp erly
adjuste d, or is not complet ely and
securely assembled. Be sure that the
saw c hain stop s moving when the
throttle control trigger is released.
14. All chain saw service,
items list ed in the Owner ’s Manual,
should be performe d by competent
chain saw se rvice personnel. (E.g.,
if improper tools are used to remove
the flywheel, or if an improper tool is
used to hold the flywheel in order to
remove the clutch, structural damage
to t he flywh eel coul d occur which
could subsequent ly cause the fly wheel to disintegrate.)
15. Always shut off the e ngine be fore
setting it down.
16. Use extrem e caution when cutti ng
small size bru sh and s aplings be cause slender material may catch the
saw chai n and be wh ipped toward
you or pull you off balance.
17. When cutting a limb that is under tension, be alert for spring- back so that
you will not be struck when the tension in the wood fibers is released.
18. Never cut in high wind, bad weather,
when visibility is poor or in very high
or low te mperatures. Always ch eck
the tree fo r dead branches which
could fall during the felling operation.
19. Keep the handles dry, clean and free
of oil or fuel mixture.
ay from
other than the
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20. Operate the chain saw only in well
ventilated areas. Never st art or run
the engine inside a closed room or
building. Exhaust fumes contain dangerous carbon monoxide.
21. Do not operate the chain saw in a tree
unless specially trained to do so.
22. Guard against kickback. Kickback is
the upward motion of the guide bar
which occurs when the saw chain at
the nose of the gui de bar contact s
an object. Kickback can lead to dangerous loss of control of the chain
saw.
23. When transpor ting you r chain saw,
make sure the appropriate guide bar
scabbard is in place.
24. Never touch the muffer guard, guide
bar, saw chain or nut with bare hands
while the engine is in operation or immedia tely af ter shu tting d own the
engine. Doing so could result in serious burns because of high temperature.
(3)
(1) muffler guard
(2) guide bar
(3) saw chain
(2)
(1)
KICKBACK SAFETY PRECAUTIONS
FOR CHAIN SAW USERS
WARNING
• Kickback may occur when the nose
or t ip of th e guide bar touc hes an
object, or when the wood c loses in
and pinches the saw chain in the cut.
Tip contact in some cases may cause
a l ig h t ni n g f as t r e ve r s e
reaction,kicking the guide bar up and
back towards the operator. Pinching
the s aw chain a long the t op of the
guide bar may pus h the guide bar
rapidly back towards the operat or.
Either of these reactions may cause
you to Iose control of the saw, which
could result in serious personal injury.
• Do not rely exclusively on the safety
devices built into your saw. As a chain
saw user yo u shoul d take
steps to keep cutting jobs free from
accident or injury.
(1) With a b asic understanding of kick-
back you can reduce or eliminate the
element of surprise. Sudden surprise
contributes to accidents.
(2) Kee p a good grip on the saw with
both hands, the right hand on the rear
handle, and the left hand on the front
handle, when the engine is running.
Use a firm grip with thumbs and finge rs en circ lin g the chai n sa w
handles. A firm grip will help you reduce kickback and maintain control
of the saw.
) Make certain tha t the area in which
(3
you are cutting is free fr
tions. Do not let the nose of the guide
bar contact a lo g, bran ch, or any
other obstruction which could be hit
while you are operating the saw.
(4) Cut at high engine speeds.
(5) Do not overreach or cut above shoul-
der height.
(6) Follow the manufacturer’s sharpening
and maintenance instructions for the
saw chain.
(7) On ly use repl aceme nt b ars and
chains specified by the manufacturer
WORSE EFFECTS OF VIBRATION
If y ou contin ue to u se high-v ibration tools the se
symptoms will probably get worse, for example:
• the numbness in your hands could become permanent and you won’t be able to feel things at all;
• you will have difficulty picking up small objects such
as screws or nails;
• the vibr ation wh ite finger coul d happen more frequently and affect more of your fingers.
FOR PROTECTING YOUR BODY FROM VIBRATION
Please observe the following matter, in order to protect the health of your body.
1. Always use the right tool for each job (to do the job
more quickly and expo se you to less hand-arm vibration).
2. Check to ols before using them to make sure they
have been properly maintained and repaired to avoid
increased vibration caused by faults or general wear.
3. Make sure cutting tools are kep t sharp so that they
remain efficient.
4. Reduce the amount of time you use a tool in one go,
by doing other jobs in between.
5. Avoid gripping or forcing a tool or w orkpiece more
than you have to.
6. Store tools so that they do not have very cold handles
when next used.
7. Encourage good blood circulation by:
• keep ing w arm and dry (when necessa ry, wea r
sever al
gloves, a hat, waterproofs and use heating pads if
available);
• givin g up o r cuttin g down on smo king be cause
smoking reduces blood flow; and mas saging and
exercising your fingers
DISPOSAL
• When y ou dispose o f the machi ne, do not disassemble the machine.
• When you dispose of the mac hine, fuel, chain oil,
be sure to follow your local regulations.
or the equivalent.
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WORKING WITH TREE SERVICE CHAIN-SAWS FROM A
ROPE AND HARNESS
This chapter se ts out working practices to reduce the
risk of injury from tree service chainsaws when working
at height from a rope and ha rness. Wh ile it may f orm
the basis of gu idance and train ing literature, it should
not be regarded as a substitute for formal training.
General requirements working at height
Operators of tree service chainsaws worki ng at height
from a rope and harness sh ould never wo rk alone. A
competent ground worker trained in appropriate emergency procedures should assist them.
Operators of tree service chainsaws for this work should
be trained in general safe climbing and work p ositioning techniqu es and sh all properly equipped with harnesses, ropes, strops, karabiners and other equipment
for maintain ing secure and safe working posi tions for
both themselves and the saw.
Preparing to use the saw in the tree
The chains aw s hould checked, fuelled, start ed a nd
warmed up by the ground worker before it is sent up to
the operator in the tree. The chainsaw should be fitted
with a suitable strop for attaching to the operator’s harness:
a) choke the strop around the attachment point on the
rear of the saw (A);
b) provide suitable karabiners to allow indirect (i.e. via
the strop) and direct attachment (i.e. at th e attachment point on the saw) of saw to the operators harness;
c) ensure the saw is securely attached when it is being
sent up to the operator;
d) ensure the saw it secured to the harness before it is
disconnected from the means of ascent.
The saw should only be attached to the recommended
attachmen t poin ts on the harness. These may be at
mid-point (front or rear) or at the sides. Where possib
attaching the saw to c entre rear mid- point will keep it
clear of climbing lines and support its wei ght centrally
down the operator’s spine.
When moving the saw from any attachment point to another, operators should ensure it is secured in the new
position before releasing it from the previous attachment
point.
Using the chainsaw in the tree
An analys is of accidents with these saws during tree
service operations shows the primar y cause as being
inappropriate one-handed use of the s aw. In the vast
majority of acciden ts, operators fail to adopt a se cure
work position witch allows them to hold both handles of
the saw. This results in an increased risk of injury due
to:
• not having a fir m grip on the saw if it kicks back;
• a lack of control of the saw such that it is more liable
to contact climbing lines and opera tors body (particularly the left hand and arm)
• l osing control from insecure w ork position resulting
in contact with the saw (unexpected movement during operation of the saw)
Securing the work position for two-handed use
To allow the operator to hold the saw w
they should as general ru le, aim for secure work pos ition where they are operating the saw at:
• hip level when cutting horizontal sections;
• solar plexus level when cutting ver tical sections.
Where the operator is working close into vertical stems
with a low lateral forces on their work positio n, then a
good foo ting ma y be all tha t is needed to main tain a
secure work position. However as operators move away
from the stem, they will need to take steps to remove or
counteract the increasing lateral forces by, for example,
a re-direct of the main line via a supplementary anchor
point or using an adjustable strop direct from th e harness to a supplementary anchor point.
ith both hands,
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Gaining a good footing at the wo rking position can be
assisted by use of a temporary foot stirrup created from
an endless sling.
One-hand use of the chain saw
Operators should not use tree service chainsaws onehanded in place of unstable work positioning or in preference to a handsaw when cutting small diameter wood
at the branch tips.
Tree service chainsaws should only be used one-handed
where:
• the operator cannot gain a work position enabling twohanded use; and
• they nee d to support their working position with one
hand; and
• the saw is being used at full stretch, at right angles to
and out of line with the operator’s body.
Starting the saw in the tree
When starting the saw in the tree, the operator should:
a) apply the chain brake before starting;
b) hold saw on either the left or right of the body when
starting:
1) on the left side hold the saw with either the left hand
on t he f ront handle or the right hand on the rear
handle and thrust the saw away from the body while
holding the pull starter cord in the other hand;
2) on the right side, hold the saw with the right hand on
either handle and thrust the saw away from the body
while holding the pull starter cord in the left hand.
The chain brake should always be engaged before lowering a running saw onto its strop.
Operators should always chec k the saw has sufficient
fuel before undertaking critical cuts.
Operators should never:
• cut with the kickback zone at the tip of the chainsaw
guide bar
• ‘hold and cut’ sections
• attempt to catch falling sections.
Freeing a trapped saw
If the saw should b ecome trapped during cutting, operators should:
• sw itch off the saw and attac h it securely to the tree
inboard (i.e. towards the truck side) of the cut or to a
separate tool line;
• pull the saw from the kerf whilst lifting the branch as
necessary;
• if necessary, use a handsaw
release the trapped saw by cutting a minimum of 30
cm away from the trapped saw.
Whether a handsaw or a chainsaw is used to free a stuck
saw, the release cuts sh ould alway s be outb oard (toward the tips of the branch), in order to prevent the saw
being taken wit h the section and further complicating
the situation.
or second chain saw to
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Explanation of Symbols on the Machine
WARNING
For safe operation and maintenance, symbols are carved in relief on the machine.
According to these indications, please be careful not to make any mistake.
The port to refuel “MIX GASOLINE”
Position: Fuel cap
The port to top up chain oil
Position: Oil cap
Setting the switch to the “O” position, the engine stops immediately.
Position: Front at the top of the rear handle
Starting the engine. If you pull out the choke knob (at the back-right of
the rear handle) to the point of the arrow, you can set the starting mode
as follows:
•
First-stage position – starting mode when the engine is warm.
•
Second-stage position – starting mode when the engine is cold.
Position: Upper-right of the aircleaner cover
The screw under the “H” stamp is The High-speed adjustment screw.
The screw under the “L” stamp is The Slow-speed adjustment screw.
The screw at the left of the “T” stamp is the Idle adjustment screw.
Position: Left side of the rear handle
Shows the directions that the chain brake is released (white arrow) and
activated (black arrow).
Position: Front of the chain cover
If you turn the rod by screwdriver follow the arrow to the "MAX" position,
the chain oil flow more, and if you turn to the "MIN" position, less.
Position: Bottom of the power unit
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Installing Guide Bar and Saw Chain
A standard saw unit package contains the items as illustrated.
Bar protector
Guide bar
Saw chain
Open t he bo x and inst all t he gu ide b ar and the saw
chain on the power unit as follows:
WARNING
The saw chain has very sharp edges. Use thick protective gloves for safety.
1. Pull the guard towards the front handle to check that
the chain brake is not engaged.
2. Loosen the nuts and remove the chain cover.
3. Fix the hanger on the rear of power unit by screw.
Hanger
Power unit
WARNING
When installing the chain cover, be sure to fit the hook
completely at the rear end of the cover.
6. While holding up the tip of the bar, adjust the chain
tension by tu rning the tensioner screw until the
straps just touch the bottom side of the bar rail.
Plug wrench
(Hexagon socket (S13/S19) +
Slotted driver)
Screwdriver for
carburetor adjustment
(Slotted driver)
w
Tensioner scre
tie
4. Mount the guide bar the n fit the saw chain around
the bar and sprocket.
Hole
Chain cover
Chain tensioner nut
NOTE
Pay attention to the correct direction of the saw chain.
Moving direction
5. Fit the chain tensioner nut into the lower hole of the
guide bar, then install t he chain cover, and faste n
the mounting nut to finger tightness.
Loosen
Tighten
7. Tighte n the nuts sec urely wit h the bar tip held up
(11.8-14. 7 N.m. /120-150 kg-cm) . Then check the
chain for smooth rotation and proper tension whi le
moving i t by h and. If necessary, readjust wit h the
chain cover loose.
Tighten
8. Tighten the tensioner screw.
WARNING
A new chain will expand its lengt h in the beginni ng of
use. Check and readjust the tension frequently as a loose
chain can easily derail or cause rapid wear of itseif
the guide bar.
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Fuel and Chain Oil
FUEL
WARNING
• G asoline is ve ry flammab le. Avoid sm oking or
bringing any flame or sparks near fuel. Make sure
to stop the engine and allow it cool before refueling the unit. Select outdoor bare ground for fueling
and move at least 3 m (10 ft) away from the fueling
point before starting the engine.
RECOMMENDED MIXING RATIO
GASOLINE
- ONLY USE UNLEADED 95 FUEL (STANDARD) AND
SYNTHETIC 2-STROKE OIL FOR THE MIXTURE.
Gasoli ne Oil in ml Oil in ml
1,0 Li ter 40 25
1,5 Li ter 60 38
2,0 Li ter 80 50
2,5 Li ter 100 63
3,0 Li ter 120 75
3,5 Li ter 140 88
4,0 Li ter 160 100
4,5 Li ter 180 113
5,0 Li ter 200 125
5,5 Li ter 220 138
6,0 Li ter 240 150
MIX
: OIL 1
2
5:1 40:1
6,5 Li ter 260 163
7,0 Li ter 280 175
7,5 Li ter 300 188
8,0 Li ter 320 200
8,5 Li ter 340 213
9,0 Li ter 360 225
9,5 Li ter 380 238
10,0 L
iter
10,5 L
iter 420 263
iter 440 275
11,0 L
11,5 L iter 460 288
12,0 L iter 480 300
12,5 L iter 500 313
iter 520 325
13,0 L
13,5 L iter 540 338
iter 560 350
14,0 L
14,5 L iter 580 363
15,0 L
iter
15,5 L
iter 620 388
iter 640 400
16,0 L
16,5 L
iter 660 413
17,0 L iter 680 425
8
400 250
600 375
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Fuel and Chain Oil
17,5 L iter 700 438
iter 720 450
18,0 L
iter 740 463
18,5 L
19,0 L iter 760 475
19,5 L
iter 780 488
iter
20,0 L
• Exhaus t e mission are co ntrol led by the fu nda-
mental eng ine parame ters and components (eq.,
carburation, ignition timing and port timing) without addition of any major hardware or the introduction of an inert material during combustion.
• These engines are certified to op erate on unleaded
gasoline.
• If you use a gasoline of a lower octane value than prescribed, t here is a danger that the engine t emperature may rise and an engine problem such as piston
seizing may consequently occur.
• Unleaded gasoline is recommended to reduce the
contamination of the air for the sake of your health and
the environment.
• Poor qual ity gasoline s or oils may d amage sealing
rings, fuel lines or fuel tank of the engine.
HOW TO MIX FUEL
WARNING
• Pay attention to agitation.
1. Measure out the quantities of gasoline and oil to be
mixed.
2. Put some of the gasoline into a clean, approved fuel
container.
3. Pour in all of the oil and agitate well.
4. Pour in the rest of gasoline an d agitate again f or at
least one minute. As some oil s may be difficult to
agitate depending on oil ingredients, sufficient agitation is necessar y for the engine to l ast long. B e
careful that, if the agitation is insufficient, there is an
increased danger of early piston seizing due to abnormally lean mixture.
Put a clear indication on the outside of the container
5.
to avoid mixing up with gasoline or other containers.
6. Indicate the contents on outside of container for easy
identification.
800 500
FUELING THE UNIT
1. Untwist and remove the fuel cap. Re st the cap on a
dustless place.
2. Put fuel into the fuel tank to 80% of the full capacity.
3. Fasten the fuel cap securely and wi pe up any fuel
spillage around the unit.
WARNING
1. Select flat and bare ground for fueling.
2. Move at least 10 feet (3 meters) away from the fueling point before starting the engine.
3. Stop the engine before refuel ing the unit. At t hat
time, be sure to sufficiently agitate the mixed gasoline in the container.
FOR YOUR ENGINE LIFE, AVOID:
1. FUEL WITH NO OIL (RAW GASOLINE) – It w ill cause
severe damage to the internal engine parts very quickly.
2. DO NOT USE FUEL TYPE SP95-E10 (10% ETHANOL) TO
MAKE THE 2-STROKE MIXTURE.
3. DO NOT USE READY-TO-USE ALKYLATE PETROL, THESE
TYPES OF FUELS ARE DIFFERENT IN COMPOSITION AND
NOT COMPATIBLE WITH OUR MACHINES AND CAN RESULT
IN EARLY DAMAGE OF THE ENGINE AND / OR CARBURETOR.
4. OIL FOR 4-CYCLE ENGINE USE – It can cause spark
plug fouling, exhaust port blocking, or piston ring sticking.
5. Mixed fuels which have been left unused for a pe-
riod of one month or more may clog the c arburetor
and result in the engine failing to operate properly.
6. In the case of storing the product for a long period of
time, clean the fuel tank after rendering it empty. Next,
activate the engine and empty the carburetor of the
composite fuel.
7. In the case of scrapping the used mixed oil container,
scrap it only at an authorized repository site.
NOTE
As for details of quality assurance, read the description
in the section Limited Warranty carefully. Moreover, normal wear and change in product with no functional influence are not covered by the warranty. Also, be careful that, if the usage in the instruction manual is not observed as to the mixed gasoline, etc. described therein,
it may not be covered by the warranty.
CHAIN OIL
Use motor oil S AE #10 W-30 a ll yea r roun d or SAE
#30 ~ #40 in summer and SAE #20 in winter.
NOTE
Do not use wasted o r regenerated oil that can cause
damage to the oil pump.
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Operating the Engine
WARNING
It is very dangerous to ru n a chainsaw that mounts broken
parts or lacks any parts.
Before starting engine, make su re that all the parts including bar and chain are installed properly.
STARTING THE ENGINE
1. Fill fuel and chain oil tanks respectively, and tighten
the caps securely.
Fuel
2. Gently push the priming bulb with the finger until fuel
3. Put on/off swith in 'on' position
4.
5. Pull the cordstarter until you hear a brief starting
6.
Chain oil
comes in the bulb (do not pinche the bulb).
Switch
Pull the choke lever until you hear a 'click' and sothat
the lever stays in place
Choke
knob
'kick/noise'
After the starting kick, you first must release the
choke by squeezing the trottle (this will make the
choke go in automatically).
Throttle
interlock
8. While holding the saw unit se curely on the ground,
pull the starter rope vigorously.
WARNING
Do not start the engine while the chain saw hangs in
one hand. The saw chain may touch your body. This
in very dangerous.
CHECKING THE OIL SUPPLY
WARNING
Make sure to set up the bar and the chain when checking the
oil supply.
If not, the rotating parts may be exposed. It is very dangerous.
After starting the engine, run the chain at medium speed
and see if chain oil is scattered off as shown in the figure.
Chain oil
The chain oil flow can be change d by inser ting a
screwdriv er in the hole on bottom of t he clu tch si de.
Adjust according to your work conditions.
Rich
The oil tan k should be come nearly empty by t he time
fuel is used up. Be sure to refill t he oil tank ever y time
when refueling the saw.
Lean
Chain oil flow
adjusting shaft
Throttle
7. Pull the cord starter until the engine starts
NOTE
DO NOT PUSH BACK THE CHOKE WITH YOUR FINGER
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CHAIN BRAKE
The chain brake is a device whic h stops the chai n instantaneously if the chain saw recoils due to kickback.
Normally, the brake is activated automatically by inertial
force. It can also be activated manually by pushing the
brake lever (left-ha nd gua rd) do wn tow ard the front.
When the brake operates, a yellow cone pops up from
the base of the brake lever.
Releasing the Brake
Pull the brake lever up toward the left-hand handle until
it clicks into place.
WARNING
• When th e brake operates, release the throttle lever
to slow down the engine speed. Continuous operation with the brake engaged will generate heat from
the clutch and may cause trouble.
• At machine inspection prior to each job, check the
operating condition of the brake following the steps.
1. Start the engine and grasp the handle securely with
both hands.
2. Pulling the throttle lever to maintain the chain operation, pus h the brake lev er (left -hand gu ard) down
toward the front using the back of your left hand.
3. When the brake operates and the chain is stopped,
release the throttle lever.
4. Release the brake.
STOPPING THE ENGINE
1. Release the throttle lever to allow the engine to idle
for a few minutes.
2. Set the switch to the “O” (STOP) position.
Release
Switch
Activate
the brake.
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Sawing
WARNING
• It is not necessary to force the saw into the cut. Apply only ligh t pressure while running the engine at
full throttle.
• When the saw cha in i s ca ught in the cut, do not
attempt to pull it out by force, but use a wedge or a
lever to open the way.
• If the guide bar and saw chain becomes caught in
wood while operating it, stop the engine.
Do not pry the handle wi th excessive
wedge to remove the chain instead.
GUARD AGAINST KICKBACK
• Before proceeding to your job,
rea d the sect ion “Fo r S afe
Operation”. It is recommended
to fi rst p ractice sawing ea sy
logs. Thi s also helps you get
accustomed to your unit.
• Always follow the safety regulatio ns. The chai n s aw must
only be used for cutting wood.
It is forbi dde n to cut oth er
types of mate rial. Vibr ations
and kickback vary with different materials and the requirements of the safety regulations
would not be respected. Do
not use the chain saw as a lever for lifting, moving or spl itting objects. Do not lock it over
fixed stands. It is forbidden to
hitch tools or applicatio ns to
th e PT O oth er tha n thos e
specified by the manufacturer.
force. Use a
• This sa w is equipped with a chain
brake that will stop the chain in the
event of kickback if operating properly. You must check the chain brake
operation before each usage by running the saw at full the throttle for I 2 s econds and pus hing th e front
han d g uard forw ard. The chain
shoul d s top imme diately with th e
engine at ful l speed. If the chain is
slow to stop or does not stop, replace th e brake band a nd clutc h
drum before use.
• It is ex trem ely impor tant that t he
chain brake be checked for proper
operation before each use and that
the chain be sharp in order to maintain the kickback safety level of this
saw. Removal of the safety devices,
inadequate maintenance, or inco rrect replacement of the bar or chain
may increase the risk ot serious personal injury due to kickback.
FELLING A TREE
Felling direction
Notch cut
1. Decide the fe lling d irection considerin g the wind,
lean of the tree, location of heavy branches, ease of
completing the task after felling and other factors.
2. While clea ring the area aroun d the tree, arra nge a
good foothold and retreat path.
3. Make a notch cut one-third of the way into the tree
on the felling side.
4. Make a felling cut from the opposite side of the notch
and at a level slightly higher than the bottom of t he
notch.
Felling cut
WARNING
When you fell a tree, be sure to warn neighboring workers of the danger.
Bucking and Limbing
WARNING
• Always ensure your foothold. Do not stand on the log.
• Be alert to the rolling over of a cut log. Especially when
working on a slope, stand on t he uph ill si de of the
log.
• Follow the instructions in “For Safe Operation” to avoid
kickback of the saw.
Before startin g work , chec k the direction of bending
force inside the log to be cut. Always finish cutting from
the oppos ite side of the bending direction to prev ent
the guide bar from being caught in the cut.
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A log lying on the ground
Saw down halfway, then roll the log over and cut from
the opposite side.
A log hanging off the ground
In area A, saw up from the bottom one -third and finish
by sawing down from the top. In area B, saw down from
the top one-third and finish by sawing up from the bottom.
Cutting the limbs of Fallen Tree
First check t o which side the limb is bent. Then make
the initial cut fr
from the opposite side.
WARNING
Be alert to the springing back of a cut limb.
Pruning of Standing Tree
Cut up from the bottom, finish down from the top.
om the be nt side and finish by sawi ng
WARNING
• Do not use an unstable foothold or ladder.
• Do not overreach.
• Do not cut above shoulder height.
• Always use both your hands to hold the saw.
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7. Muffler
WARNING
If you do not attach the muffler correctly, after engine starts,
the muffler will be loosen and the hightemperature exhaust
gas spout. After cleaning the muffler, pay atten tion to fit up
the muffler according to the explanation as follows.
1. Muffler bo dy, muffler co ver and baffle w ill be combined
correctly.
2. Be sure the gasket is not broken. If it is broken, change to
the new one.
3. Before tightening the screw, rub the gross on it.
4. After mak ing a test run, re-tighten the screw (TORQUE:
6.9-7.8 N.m./70-80 kg-cm)
WARNING
Right a fter stopping the engine, do not touch the muffler
with one's bare hands. It will cause to burn your hands.
If carbon clogs between the muffler, it will cause the poor-output and t he trouble in star ting. After each 1 00 hours, check
and clean inside the muffler.
Maintenance of Saw Chain and Guide Bar
Saw Chain
WARNING
It is ver
y important for smooth an d safe operation to
always keep the cutters sharp.
The cutters need to be sharpened when:
• Sawdust becomes powder-like.
• You need extra force to saw in.
• The cut path does not go straight.
• Vibration increases.
• Fuel consumption increases.
Cutter setting standards:
WARNING
Be sure to wear safety gloves.
Place the fil e on the cu tter and pus h straight fo rward.
Keep the file position as illustrated.
Before filing:
• Make sure the saw chain is held securely.
• Make sure the engine is stopped.
• Use a round file of proper size for the chain.
After each cutter has been filed, check the depth gauge
and file it to the proper level as illustrated.
Appropriate gauge checker
Make the shoulder round
Depth gauge standard
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WARNING
Be s ure to round off th e f ront edge to reduce the
chance of kickback or tie-strap breakage.
Make sure every cutter has the same length and edge
angles as illustrated.
Cutter length
side of a cutter. If a gap is observed between them,
the ra il is normal. Oth erwise, the bar rail is worn.
Such a bar needs to be corrected or replaced.
Ruler
Gap
Filing angle
Side plate angle
op plate cutting angle
T
Troubleshooting Guide
Case 1. Starting failure
WARNING
Make sure the icing prevention system is not working.
Check fuel for water
or substandard mixture.
Che ck for eng ine
flooding.
Check spark ignition.
Case 2. Lack of power/Poor acceleration/
Rough idling
Check fuel for water
or substandard mixture.
Check ai r filt er and
fuel fi lter for clog ging.
for inadequa te adjustment.
rChe ck car buret o
Replace with proper
fuel.
Remove and dry the
spark plug.
Then pull the starter
again with no choke.
Replace with a new
plug.
Replace withproper
fuel.
Clean.
Readjust speed
needles.
No gap
Chain tilts
Guide Bar
• Reverse the bar occasionally to prevent partial wea .
• The barrail should always be square. Check for wear
of the bar rail. Apply a ruler to the bar and the out
Case 3. Oil does not come out
Chec k oil for substandard quality.
Check oil pass age
and p orts for clogging.
Disposal
• When you dispose of the m achine, do not disassemble the machine.
• When you dispose of the machine, fuel, chain oil, be
sure to follow your local regulations.
Replace.
Clean.
Specifications
SKU:
Displacement:
Rated Power: 0.75kW/8500rpm
Max.Engine Speed: 10500rpm
Length of Blade: 12 Inch
Fuel:
15
Mixture (Gasoline 40: Two-cycle oil 1)
r
31212
25.4cc
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