power King PK4014 Technical manual

40cc Powerking Chainsaw
PK4014 - PK4018 - PK401418

1
Contents
Contents ……………………………………………………… 1
Introduction ………………………………………………… 2
Symbol and Sign Illustration ……………………………… 3
Safety Precautions ………………………………………… 4
Overview of Preventive Measures …………………………… 4
Safety Prevention of Bounce ………………………………… 5
Other Safety Protection Measures and Precautions ………… 6
Structural Diagram ………………………………………… 9
Installation and Operation ………………………………… 11
Installation of Guide Plate and Chain ……………………… 11
Fuel …………………………………………………………… 11
Chain lubrication …………………………………………… 12
Start-up Operations ………………………………………… 12
Operation …………………………………………………… 13
Stop Operations ……………………………………………… 13
Chain Brake ………………………………………………… 14
Cutting Guidance …………………………………………… 15
Tree Cutting ………………………………………………… 15
Branch Cutting ……………………………………………… 16
Tree Sawing ………………………………………………… 16
Maintenance and Servicing ………………………………… 18
Carburetor …………………………………………………… 19
Air Filter ……………………………………………………… 19
Fuel Supply System ………………………………………… 19
Gasoline Filter ……………………………………………… 19
Oil Filter ……………………………………………………… 19
Guide Plate …………………………………………………… 20
Clutch shell ……………………………………………………20
Oil Pump……………………………………………………… 20
Spark Plug ……………………………………………………20
Magneto ………………………………………………………20
&\OLQGHUFRROLQJ¿QV …………………………………………20
Faults and Troubleshooting ………………………………… 21
Chain Saw Maintenance ……………………………………22
Grinding Tools ………………………………………………22
Grinding Precautions ………………………………………… 22
Correct Angle of Edge Grinding …………………………… 23
Storage Management ………………………………………24
7HFKQLFDO6SHFL¿FDWLRQV ……………………………………25

2
Introduction
The operation manual mainly introduces the safety operation
steps, proper operation, related services and maintenance of
SURPASS gasoline chain saw. If the suggestions are adopted,
the service life of the saw will be prolonged, and the good
operating state will be guaranteed.
Improper operation may cause physical injury.
Correctly understand all the safety precautions before use.
The machine is used for cutting wood and other wooden
products, and must not be used to cut metal rods, metal plates,
plastic or other non-woody materials.
If you cannot understand any part of the manual, please contact
SURPASS product distributor immediately.

3
Symbol and Sign Illustration
Please carefully read the operation manual.
This symbol indicates warning and danger,
and is used to remind the operator to pay
attention to operation cases in which injury
and even death may be caused.
This symbol with an oblique line in a circle
indicates prohibition in any case.
Wear the eye, ear and head protective
appliance.
Warning! Bounce occurs easily.
STOP
Emergency stop sign
Saw chain brake operation
Fuel mixture of gasoline and oil
Filling saw chain lubricating oil/oil pump
Flow adjustment of saw chain lubricating oil
Carburetor adjustment--low-speed mixing
Carburetor adjustment--high-speed mixing
Carburetor adjustment--idle-speed mixing
Attention
The information includes the contents
to which attention should be paid during
operation, storage and maintenance of the
machine.
Find these marks on the machine and check whether they are
clear and comprehensible. Operate the machine according to
the instructions.
In case you cannot nd some marks in the manual, consult
SURPASS dealer for denition and illustration of the marks.
Check whether the marks are legible.

4
Safety Precautions
Overview of Preventive Measures
Operation Manual
Carefully read the operation manual of the saw chain.
Be fully familiar with the operating instructions of
the saw chain, and properly operate the saw chain.
Personal injury may be easily caused if you do not
follow the suggestions in the manual. If you have any
question, please contact SURPASS product distributor.
Physical conditions
Do not operate the chain saw after drinking or
taking narcotic drugs or when you feel tired.
In order to ensure operation safety, be sure that
your mind and body are in good condition. Any
improper judgment or action will result in serious
and even fatal consequences.
If you feel uncomfortable, tense work will further deteriorate
your health condition. Therefore, please examine your physical
conditions before operating the chain saw. Don’t operate the
machine if you are sick or tired or you take drugs or other food that
will seriously affect the eyesight, action sensitivity and judgment.
Safety protection equipment
Wear appropriate goggles to protect your eyes, as wood
chippings, dust, suddenly broken branches or other waste may
be thrown to you in the cutting process. Goggles can also be
used to protect your eyes to the most extent if the chain saw hits
the face in the cutting process. If required, wear the goggles
under the ventilating mask.
SURPASS strongly recommends the operator to wear earmuffs
during operation of the chain saw; otherwise, your hearing will
be affected. You must wear the “helmet” type protective device
or earmuffs approved by the safety organization to protect your
hearing. Any person that operates the chain saw frequently must
receive hearing examination on a regular basis.
Wear the heat during operation of the chain saw. If you work
under a tree or a place where there is a chance that something
may hit you, please wear a qualied safety helmet.
You must wear heavy and non-slip labor protection gloves to
help hold the chain saw, protect you under cold conditions and
reduce vibration.
Wear the complete labor protection shoes or boots
with non-slip soles. Do not wear loose clothes,
jackets without buttons or clothes with sleeves or legs
extended outwards. Do not wear the scarf, lacing, tie,
bracelet, necklace and other kinds of jewelry, which
may be easily hooked by the chain saw or branches.
Wear tting clothes made of durable materials to prevent clothes
from being hooked or broken. However, the exible operation
must be guaranteed.
Legs must be tie. Preferably, legs should be inserted into the
labor protection boots or shortened. It is more effective to
wear labor protection clothes, leg protection leather trousers or
special trousers for woodcutters.
If possible, the operator should wear the above labor protection
articles. The chain saw must be operated by more than one
person. At least one person should be appointed to help you
when required.
Fuel
Warning Danger
•  Gasolineandoilareammable.Ifgasolineoroil
spillsoutorifthereisaresource,remaybeeasily
caused,resultinginseriousburnsandhugeproperty
losses.Sopleasebeverycarefulwhenaddingfuel.
• Afterrefueling,tightenthefuelcontainercoverand
checkwhetherfuelleaks.Incaseofleakage,repair
thefuelcontainerbeforestartingtheengine,soas
topreventre.

5
Use the fuel container approved by safety authorities.
There may be pressure inside the fuel container. Slowly loosen
the fuel cover until the internal pressure becomes equal to the
external pressure before removing the fuel cover.
Place the fuel container in an outdoor open area. Ensure the
safety while tightening the cover. Wipe the fuel outside the
Do not refuel when the engine is hot or running. Do not store
the machine with fuel in the fuel tank into the warehouse. Fire
may easily occur in case of fuel leakage.
Start Engine
3m
Remove the chain saw to a place at least 3m away from the
refueling point before starting the engine.
Others must not get close to the chain saw when the engine is
started or the chain saw is used for cutting. Bystanders or other
small animals must be kept outside the working area. Wood
must not be held by others in the cutting process.
The engine must not be started until the working area is cleaned,
a safe standing place is determined, and the safe retreat routine
for escape at the time of falling-off of the tree is selected.
Before starting the engine, check whether the chain saw contacts
with any object. The handle must be dry, without any gasoline,
oil or mixture thereof. Operate the machine in a well-ventilated
area, as the exhaust gas, oil mist (produced in lubrication of the
chain saw) and sawdust are harmful to your health.
Relocation of the machine
Use the approved guide plate
sleeve for handling the chain saw
elsewhere. Stop the engine, make
the guide plate and chain face
away from the body before
moving the chain saw.
Safety prevention of bounce
Warning Danger
When the top or front end of the guide plate of the chain
saw contacts with an object, bounce may easily occur
at the time of breaking of trees and in case of extrusion
of the chain saw in the cutting process. Preventive
measures must be taken in advance.
If the top contacts with other objects, slight and quick return
response will occur, and the guide plate will rapidly bounce up
and down towards the operator (known as rotating bounce). If
the chain is twisted towards the guide plate, the guide plate will
suddenly bounce towards the operator (known as linear bounce).
Any kind of bounce will result in out-of-control of the chain
saw and serious injury caused by collision between the chain
moving rapidly and the body. The chain saw operator must take
measures to prevent accidents or casualties.
The basic knowledge of bounce can help to reduce or evaluate
emergencies which may easily result in accidents. When you
understand the causes of bounce, you can take measures to
prevent the front part of the guide plate without protection from
contacting with other objects or the ground.
Oil tank cover
Fuel tank cover
Guide plate sleeve

6
Do not operate the chain saw
with one hand. Physical injuries
of the majority of operators or
assistants are caused by
operation with one hand. In
order to normally control, the
chain saw must be operated
with both hands, and the throttle
should be controlled with one hand. If the chain saw is out of
control and slippage or side slipping is caused, personal injury
may cause.
Hold the handles of the chain saw with both hands during
operation of the engine, the right hand for holding the rear
handle, and the left hand for holding the front handle. The
handles of the chain saw must be held with the thumb and
other ngers in a loop form. Thus, bounce in operation can be
reduced, and the chain saw can be continuously controlled. In
any case, the chain saw must be controlled with both hands.
Do not cut branches higher than the chest.
Check whether there is any obstacle in the cutting area. Prevent
the front part of the guide plate from contacting with logs,
branches or other objects to prevent bounce during operation of
the chain saw.
High-speed cutting can help to reduce the possibility of
bounce. Low speed or throttle can help to control the chain
saw, thus reducing the possibility of bounce. Adopt the chain
saw grinding and maintenance methods provided by the
manufacturer. For replacement, use the guide plate and chain
saw provided by the manufacturer or the approved guide plate
and chain saw of equivalent performance.
Other Safety Protections and Precautions
Shock and Cold Protection Measures
According to Raynaud’s phenomenon, the
functions of ngers will be signicantly affected
after long-term exposure to cold air or vibration.
Therefore, the anti-vibration design of the chain
saw can help to reduce the intensity of vibration
transmitted from the handle to the body. Long-time exposure to
the cold and vibration will result in nger sounding or burning
and further paleness and numbness.
It is strongly recommended to take the following preventive
measures, as you cannot feel slight cold or vibration.
1. Keep the body warm, especially the head, neck, feet,
ankles, hands and wrists.
2. Smoking is prohibited at break during work. Stretching the
arms as much as practical to keep good blood circulation
of the body.
3. Limit the daily operating time of the chain saw, and minimize
the work requiring direct control of power tools by hand.
4. If you feel uncomfortable or the ngers are subject to
swelling and further paleness and numbness, you must
not work under cold and vibrating conditions and should
immediately seek medical help.
Repetitive injury
Excessive operation may result in swelling, numbness and
extreme pains of the muscles and tendons of the ngers, hands,
arms and shoulders. Repetition of the same actions by hand may
easily lead to the above symptoms.
Take the following steps to avoid the above symptoms:
1. Prevent the wrists from bending. Stretch the wrists out
and keep the wrists upright as possible as practical. Hold
objects with the entire hand, instead of the thumb and
forenger.
2. Rest several times during work to reduce the time of
repeated operation to make the arms rest.
3. Reduce the speed and intensity of repeated operation.
4. Exercise more to strengthen the arms and muscles.
5. Seek medical help if your ngers, hands, wrists or arms
feel numb or painful or utter sound.

7
Chain saw conditions
Warning Danger
Donotmodifythechainsaw.
Use the pass and accessories provided SURPASS,
or the parts and accessories which are approved by
SURPASSandofthesamemodelasthechainsaw.If
thepartsaresuitableforthemachinesofSURPASSbut
notapprovedbySURPASS,physicalinjuryorserious
risksmaybecaused.
Do not use the chain saw which is damaged, poorly adjusted or
not installed completely and safely.
Do not use the chain saw if the mufer is not installed rmly or
damaged.
Check whether the chain saw can stop moving after the throttle
controller is released.
Cutting
The operator must receive training before cutting trees with the
chain saw.
Keep the body away from the chain saw during operation of the
engine.
Be careful to cut small shrubs or trees, as the chain may be
easily stuck by soft branches or soft branches may whip or the
operator may lose the balance.
Be careful to cut large branches under pressure to prevent them
from bouncing and hitting the operator and chain saw after
release.
It is dangerous to cut on the ladder.
The ladder is easy to slip, thus
limiting the control of the chain
saw. Cutting in high places must be
done by professional operators.
Stop the engine before lowering the
chain saw.
Maintenance
All the items of maintenance services related to the chain saw
are listed in the maintenance instructions in the operation
manual. Maintenance must be done by the competent
professional service personnel (the ywheel may be damaged
and even broken if the ywheel and clutch are removed with
inappropriate tools).
Wood cutting operation
To ensure the cutting safety, keep the normal work sequence,
judge the sound and adopt different cutting methods in different
cutting environments.
Do not lend the chain saw to others, unless the operator have
carefully read the operation manual and understood all the
suggestions and guides.
The chain saw must not be operated by children.
The chain saw must not be used for cutting metal rods, metal
plates, plastic and other materials except wood, and can only be
used for cutting trees or wooden products.
Stand on the uphill during cutting of logs and trees without
boughs on slopes, so as to prevent injuries caused by sudden
rolling of wood. Always keep both feet on the ground in the
cutting process.

8
Chain brake
The chain brake is used to stop chain rotation in case of bounce
of the chain saw, and cannot be used to prevent or reduce bounce.
Even if the chain brake is applied, the operator should keep the
quick response and adopt the correct cutting method, like in the
case with no chain brake.
The response time of the chain brake will gradually increase
even if the chain saw is properly operated and maintained.
The following operations may affect the capability of the chain
brake to protect the operator.
1. The chain saw is controlled improperly and contacts with
the body of the operator. The speed of bounce is too high,
and prompt braking cannot be realized even by the well-
maintained brake.
2. The hands of the operator are not placed in the correct
positions of hand guards, resulting in failure of activation
of the brake.
3. The stop time of the brake is prolonged as a result of
improper maintenance, causing poor braking effects.
4. The chain braking time is prolonged as a result of
dust, grease, oil, resin and other debris in the working
mechanisms.
5. The stop time of the chain brake is prolonged as a result of
fatigue and wear of the brake spring and wear of the shoe
pad, clutch shell and crankshaft hinge joint.
6. The chain brake may fail if the front bafe and brake strap
are damaged.

40cc Powerking Chainsaw
PK4014 - PK4018 - PK401418

10
1. Operation manual ─ accompanying le. Please carefully
read the operation manual before operation and properly
keep the operation manual for future learning and
reference. The operation manual provides safety operation
skills and is necessary for the operator.
2. Front bafe ─ installed between the handle and chain and
used to protect the hand of the operator from slipping off
the carrying handle and being injured. The front bafe can
also help to control the chain saw. The hand guard can also
help to activate the chain brake to stop the chain.
3. Carrying handle (held by the left hand) ─ installed on
the front part of the engine shell and used for supporting.
4. Rear handle (held by the right hand) ─ installed on the
rear part of the engine shell and used for supporting.
5. Hand guard of rear handle ─ refer to the extension part
under the rear handle, which is used to protect the hand
from being injured by the chain broken or moving out of
the slot.
6. Right side plate ─ used to protect the guide plate, chain,
clutch and sprocket during operation of the chain saw.
7. Tensioning device ─ used to adjust the chain tension.
8. Locking nut of right side plate ─ used to x the right
side plate and x and disassemble the guide plate of the
chain.
9. Guide plate ─ used for supporting and guiding the saw
chain.
10. Chain ─ used as a cutting tool.
11. Fuel tank cover ─ used to seal the fuel container. Tighten
it by means of clockwise rotation.
12. Oil tank cover ─ used to seal the oil tank. Tighten it by
means of clockwise rotation.
13. Starter handle ─ refer to the handle of the starter, used to
start the engine.
14. Stop switch ─ used to disconnect and connect the ignition
system to start and stop the engine.
15. Starter cover ─ refer to an important component for
installation of the start-up system and a power-driven
intake channel.
16. Trigger ─ activated by the nger and used to control the
engine speed.
17. Trigger control arm ─ refer to a safety protection device.
The trigger cannot be activated until the trigger control
arm is pressed. The trigger control arm can be used to
prevent misoperation of the throttle controller.
18. Choke valve pulling rod ─ used to adjust the mixing
ratio of fuel and air in the carburetor and assist the engine
start-up.
19. Air lter locking nut ─ used to x the small cap of the air
lter.
20. Small cap of air lter ─ used to protect the air lter.
21. Large cap ─ refer to the grids through which cooling air
ows. The large cap is used to protect the cylinder, spark
plug and mufer.
22. Guide plate sleeve ─ refer to a protective device used
to cover the guide plate and chain when the chain saw is
relocated or not in use.

11
Installation and Operation
Installation of guide plate and chain
The guide plate and chain are separated from the body during
delivery. Please take the following steps to install the guide plate
and chain.
OFF
1. Loosen the nut and remove the right side plate.
2. Slowly slide the guide plate towards the clutch to facilitate
installation of the chain.
OFF
3. Install the chain as shown in the gure (ensure that the
saw teeth are set in the correct direction).
4. Release the chain brake. Install the right side plate on
the guide plate xing bolt, and carefully tighten the nut
by hand. Check whether the chain tension regulator is
properly installed through the hole of the guide plate.
5. Lift the head part of the guide plate, and rotate the
regulator clockwise until the chain is neatly attached to the
edge of the guide plate.
6. Lift the guide plate and tighten the nut.
7. Rotate the chain by hand along the guide
plate. If the chain is too tight, loosen the
regulator.
8. Make the engine operate at low speed.
Then stop the engine. If the chain tension
is not appropriate, readjust the chain.
Warning Danger
1. Allkindsofadjustmentmustbedoneafterthe
machineiscooled.
2. Wearglovesduringoperationofthechainsaw.
3. Donotusethechainsawwithaloosechain.
Check of chain tension
Attention
Loosenthexingnutoftherightsideplatebefore
adjustingthechaintensioningdevice;otherwise,the
rightsideplateandchaintensioningdevicewillbe
damaged.
Always check the chain tension and adjust
it as required during operation of the
chain saw.
Maximize the chain tension. Even so, the
chain can be easily pulled by hand along
the guide plate.
Fuel
Fuel is a kind of mixture of unleaded gasoline of 90# or above
and standard two-stroke oil. Do not use fuel with the methanol
or ethanol content more than 10%.
Gasoline
Two-stroke
oil
Gasoline
(L)
Two-stroke oil (mL)
30:1 25:1
133 40
266 80
4133 160
2-4 mm

12
Mixing ratio of gasoline and oil:
SURPASS pure two-stroke oil ………………… 30:1
Other standard two-stroke oil ………………… 25:1
Warning Danger
In any case, slowly loosen the fuel container cover until
the pressure inside the container is basically equal to
the external pressure and then remove the container
cover to open the container.
--Do not directly mix fuel in the engine oil tank.
--
Wipe the spilled fuel.
--Fuel is easy to burn. Use fuel with care.
Chain lubrication
The friction between the chain and guide plate
can be reduced by means of good lubrication,
thus, the service life of the chain and guide plate
can be prolonged. Use high-quality special chain
lubricating oil.
Do not use waste oil or oil of unknown brand, so as to avoid
failure of the oil pump.
SAE30…used in summer.
SAE10…used in winter or for cutting of trees with a lot of resin.
Start-up operations
Start-up mode
Start-up on the
ground
Start-up between
both knees or legs
1. Start-up on the ground
•Safely set the chain saw on the ground. Ensure that you
can stably stand on the ground and the chain will not
contact with any object or the ground.
•Hold the front handle with the left hand. Press the chain
saw on the ground, with the thumb under the handle.
•Put the right foot in the right handle and press the chain
saw.
2. Start-up between both knees or legs
•Clamp the rear handle with the thigh parts adjacent to the
knees.
•Hold the front handle with the left hand, with the thumb
under the handle.
Start-up operations
Carefully lift the starter handle with the right hand to the stop
position. Then rapidly pull the handle with force and press
the front handle down. Do not pull the start rope to the largest
extent; otherwise, the start rope may be broken. Prevent free
bounce of the starter handle. Instead, slowly lead the start rope
into the shell so as to properly roll the rope.
Attention
Do not pull the start rope to the largest extent.
Prevent sudden retraction of the starter handle in the
opposite direction of the box.
Cold start of engine
Starter
handle
Chain braking
direction
1. Fill the mixed fuel into the fuel tank. Prevent fuel from
2. Fill lubricating oil into the oil tank.
3.
brake activation).

13
Stop switch
H
Choke valve
pulling rod
4. Put the stop switch in the upper position.
5. Pull out the whole choke valve pulling rod.
6. Safely control the chain saw.
7. Check whether the guide plate and chain are free from
contact with any object before starting the engine.
8. Pull the starter handle several times until the ignition
sound is uttered by the engine.
9. Push in the whole choke valve pulling rod.
10. Pull the starter handle again until the engine is started.
Warning Danger
If the chain brake is not activated but the engine is
started, the chain will rotate. Do not start the engine
untilthechainbrakeisactivated.
If the engine cannot be started easily:
1. Check whether fuel and oil are lled.
2. Press the front bafe forwards (in the position of chain
brake activation).
3. Put the stop switch in the upper position.
4. Safely control the chain saw.
5. Pull the starter handle.
Operation
Make the engine rotate at idle speed several minutes after start-
up. Gradually press the throttle to accelerate the engine.
Warning
Aftertheengineisstartedandthethrottleispressed,
theclutchwillbeengaged,andthechainwillrotate.
Aftertheengineisstarted,releasethethrottleand
keeptheengineoperatingatidlespeed.
The chain will rotate when the engine
speed is approximately 4,300rpm.
Check whether the acceleration is
normal and whether the chain saw
and guide plate are well lubricated.
Do not operate the engine at high
speed unless otherwise required.
Check whether the chain saw stops running after the throttle is
released.
Warning
1. After the engine is started, rapidly pull back the
frontbafe(toreleasethechainbrake).
2. Donotacceleratetheengineifthechainbrakeis
stillengaged.
3. The chain brake must be used in emergencies.
Unless it is absolutely required, the chain brake
mustnotbeused.
Stop operations
Loosen the throttle to make the engine operate at idle speed.
Set the stop switch in the stop position.
Attention
Iftheenginecannotbestopped,pulloutthewhole
chokevalvepullingrodtostoptheengine.Restartthe
engineafterinspectionandmaintenanceoftheignition
switch.
Cutting test
Be familiar with the chain saw before actual cutting. Therefore,
it is wise to perform cutting tests with small logs or branches.
People or small animals must not enter the working area. Chain
saw operators work in the same area must keep a sufcient
safety distance.
Trigger
Trigger control arm

14
Chain saw lubrication test
Control the chain to operate towards
one dry surface and accelerate the
throttle to operate at half speed for
about 30s.
Check whether a clear oil line can be
seen on the dry surface.
Chain brake
Check of braking performance of brake
1. Place the chain saw on the ground.
2. Control the handle with both hands
to accelerate the engine to high
speed.
3. Trigger the front bafe by rotating
the left wrist holding the front bafe,
so as to enable the chain brake.
4. The chain is stopped immediately.
5. Loosen the throttle.
Release of chain brake
The chain brake is released when the
front bafe completely returns to the
operator side.
If the chain cannot be stopped
immediately, send the chain saw to
SURPASS product distributor for
maintenance.
Warning Danger
Mostofrisksarecausedbybounceoftheguideplate,
whilebounceiscausedwhenthetopoftheguideplate
issubjecttocollisionagainstwoodorsimilarobjects.
Thechainbrakecanbeusedtoreduceoravoidphysical
injurycausedbybounceoftheguideplate.
Checktheeffectivenessofthechainbrakebeforeusing
thechainsaweachtime.
Non-articial invention of chain brake
The tail end of the guide
plate must be kept 35cm
above the plane.
35cm
Hold the rear handle
with the right hand.
Non-articial invention of the chain brake means that the chain
brake is stopped as a result of bounce of the tail end of the guide
plate. In order to ensure the normal action of the chain brake
free from articial invention, take the following test steps.
1) Stop the engine of the chain saw.
2) Carefully control the front and rear handle by hand until
the tail end of the guide plate is 35cm high, as shown in
the above gure.
3) Carefully rotate the left hand holding the front handle until
the front part or top of the guide plate hits the wood or
similar objects under the chain saw. In this case, the chain
saw is subject to impact (do not hold the rear handle too
tightly with the right hand).
4) The impact will be transferred to the front bafe to
activate the chain brake.
Attention
Toexercisetheoperation,pressthefrontbafe
forwardstoactivatethebrakeintheprocessof
cuttingsmalltrees.Ifthechainbrakeisstuckinwood
chippings,thefunctionsofthechainbrakewillbe
weakened.Alwayskeepthesystemclean.
Donotcheckthechainbrakeintheplacewith
gasolinemist.
Chain braking
direction
Direction of
release of
chain brake

15
Cutting Guidance
Warning Danger
The front part or top end of the guide plate must not
contactwithanyobjectduringoperationoftheengine,
soastoavoidbounce.
In any case, the chain saw must be operated by one person. The
operator cannot ensure the safety during the rst operations,
therefore, it is preferable to appoint an assistant. After you
master the basic skills of operation, the best assistant is good
response capability.
The best way to control the chain saw is to stand on the left side of
the chain saw and hold the carrying handle with the left hand. Thus
the throttle can be controlled with the ngers of the right hand.
Before cutting large trees, fully get familiar with the control
operations and corresponding responses of the chain saw, and cut
small logs or large branches. Start the engine and check whether
the engine rotates normally. Press the throttle to accelerate the
chain saw and start cutting. The throttle must not be pressed
excessively. If the edge is sharp, cutting can be done efciently.
If the saw pushing force is too large, the engine speed will be
reduced, and the smoothness of actual cutting will be affected.
Some materials (such as palm acid, fertilizer, etc.) are not
favorable for the shell of the chain saw. In order to prevent the
shell of the chain saw from damage, debris such as sawdust on
the clutch and guide plate must be cleared, and the clutch and
guide plate must be cleaned.
Tree cutting
Fallen trees may cause serious damage to any object, such as
cars, houses, fences, power lines or other trees.
• You can control the falling
direction of trees. However, you
must determine the location of
fallen tree.
• Clean debris around trees before
cutting.
• You should select a good standing place to avoid any
obstacle during cutting.
• Then select the retreat route.
• When the tree starts falling down, you must move back 3m
with a 45-degree angle relative to the opposite direction of
tree falling, so as to avoid bounce of the fallen tree.
Gap
1/3 of diameter
2.5-5cm
A
1/10 of tree diameter
• First saw the tree in the falling direction.
• Form a gap of approximate 1/3 of the tree diameter.
• Then saw the tree in the opposite direction of the gap to
make the tree fall.
• Place the nail-shaped iron stopper at 2.5 - 5cm above the
bottom of the gap. When the sawing place is about 1/10 the
tree diameter away from the gap bottom, stop sawing. The
left part is used like a hinge.
•
Do not saw through the tree in the falling direction to the gap.
• The part between the gap and the sawed section in the
falling direction is used like a hinge, so that the tree can
fall in the determined direction.
• When the tree starts falling, stop the engine, place the saw
on the ground and rapidly retreat along the determined route.
Sawing in the
falling direction
Wooden wedge
Saw operation
way
Gap sawing
1
5
4
3
2
• If the diameter of the tree to be sawed is more than twice
of the length of the guide plate, rst cut the gas on one
side and then saw to the other side along the gap. The gap
depth should be approximately 1/3 of the tree diameter.
Tree falling direction

16
• Then start sawing from next point. Reserve the hinge part.
Take out the saw to continue cutting.
• Insert the saw into the previous seam. Be careful of
bounce.
• At last, pull the saw in the previous sawing direction to the
nal position.
Branch cutting
Branches are sawed in the same way as trees. Do not stand on
trees to cut branches. Be careful of collision between the top of
the guide plate and other branches. Operate the chain saw with
both hands.
Finally saw
the supporting
branch.
Place the rolling log
under the trunk.
During branch cutting, the trunk and branches should be cut
longitudinally, transversely and obliquely, and a lot of branches
will be subject to bounce near the guide plate. Clean the site
before cutting. Be concentrated in cutting, and prevent the
collision against other branches in the bounce area of the guide
plate.
Be careful to cut elastic branches and trees. Control the
direction of bounce. Several gaps can be formed on parts which
may be easily subject to bounce, to release the force of bounce.
To cut the tree with a lot of branches, the rolling log can be
placed under the tree to increase external support, and
supporting branches should be left and cut at the end.
Do not cut branches higher than the chest
or keep the guide plate vertical in the
cutting process.
Otherwise, buffering cannot be realized
to prevent possible injury in case of
bounce of the chain saw.
Tree sawing
Do not stand on the log
in the cutting process. Stand on the
uphill side in the
cutting process.
Rolling direction
Tree sawing refers to log cutting or tree splitting.
Observe the following suggestions during sorting and splitting
of trees:
• Operate the chain saw with both hands in any case.
• If possible, support the log at last.
• Stand on the uphill side during cutting on the slope or at
the foot of the hill.
Warning Danger
1. Donotstandontheloginthecuttingprocess.
2. Standontheuphillsideinthecuttingprocess.
Cutting of pulled and pressed timber
Hinge location
Hinge location Open
Open
Judge the pulling and pressing points of the long log on the
ground, according to main support points.
If the support points are at both ends, the
upper part of timber is pressed, while the
lower part is pulled.
In the process of cutting between the
two points, cut approximately 1/3 of the
diameter downwards and then upwards
in the same position.
Cut 1/3 of the diameter
downwards
Completion of upward cutting

17
When the support point is at one end
and the other end is free, the lower part
is pressed and the upper part is pulled.
In this case, cut approximately 1/3 of
the diameter upwards and then
downwards in the same position.
When both ends are supported, the
upper part is pressed, and the lower
part is pulled.
In this case, cut approximately 1/3
of the diameter downwards and then
upwards in the same position.
Wooden wedge Cut obliquely and one end can
smoothly fall down.
Warning
Ifthepulledorpressedpartoftimberisnotdetermined
correctlyandcuttingisstartedinthewrongdirection,
thechainontheguideplateofthechainsawwillbe
extrudedandcannotbemovedinthetimberseam.
Iftheengineisrotatingbutthechainisstuck,the
clutchofthechainsawwillbeburnt.
Ifthechainisstuckandthechainsawcannotbetaken
outofthechain,thesawmustnotbedraggedoutina
forcedmanner.Immediatelystoptheengine,insertthe
woodenwedgeintotheseamtoexpandtheseam,and
takeoutthechain.
Donotdragthechainsawifthechainisstuck.
Thebluntchainisnotsafeandthewearofthecutting
edgewillbeincreased.Agoodmethodtojudgethe
chainbluntnessistocheckwhetherthesawdustis
ne,insteadofnormalsawdust.
Warning
Afteroperationofthechainsaw,thehotcylinderhead
surfaceandmufercovermustnotbetouched.
Cut 1/3 of the
diameter upwards
Completion of
downward cutting
Completion of upward cutting
Cut 1/3 of the diameter
downwards

18
Maintenance and Servicing
Item Maintenance Page No. Before use On a monthly basis
Air lter Clean/replace it. 18 √
Fuel lter Check/clean/replace it. 18 √
Spark plug Check/clean/adjust/replace it. 19 √
Carburetor Adjust/replace it. 18 √
Cylinder cooling n Check/clean it. 19 √
Mufer Check/fasten/clean it. —— √
Oil lter Check/clean/replace it. 18 √
Clutch shell Check/replace it. 19 √
Chain brake Check/replace it. 13 √
Start rope Check/replace it. —— √
Guide plate Check/clean it. 19 √
Fuel supply system Check/repair it. 18 √
Screw/bolt/nut Check/fasten/replace it. —— √
If you have any ambiguity, contact SURPASS product distributor.

19
Carburetor
Do not adjust the carburetor unless otherwise required.
The carburetor is adjusted according to the following steps;
•Low-speed mixing regulator (L): rotate 1 - 1.25 turns.
•High-speed mixing regulator (H): rotate 1.5 - 2 turns.
•Idle-speed regulator (T): rotate the screw to the bottom
mark and then clockwise until the saw chain rotates,
followed by rotation of 1/2 turn.
Warning
Before start, the idle-speed regulator must be adjusted
until the saw chain does not rotate. If any chemical
fails, contact SURPASS product distributor.
Check it before each use.
Fuel supply system
Check whether fuel leaks out of the fuel pipe, sealing plug and
Fire may be caused in case of fuel leakage. Immediately stop the
machine, and send it to SURPASS product dealer for inspection
and replacement.
Check it on a regular basis.
•Prevent the fuel container from
dust.
•
cannot be started easily or rotates
abnormally.
•
or similar tools.
•
•If there is dust in the fuel tank, clean the tank with
gasoline.
Oil Filter
Check it on a regular basis.
•
Prevent the oil container from dust.
•
normal lubrication of the system
will be affected.
•
the oil inlet with the iron wire or
similar tools.
•
•If there is dirt in the oil tank, clean the tank with gasoline.
Air filter cap
Air filter lock net
Air filter
Air filter lock catch
Gasoline filter
Oil filter
Loose the air filter lock catch, move the air filter cap and back
out the air filter lock net, take out the air filter. Wipe the dust
gently, or use the pressure-air to clean it; or change to use the
new air filter.
Install the air filter and air filter cap, lock the air filter lock net
and lock catch.