Worx WG303E Installation manual

Chain Saw WG303E
SAFETY AND OPERATING MANUAL

Chain Saw WG303E
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GENERAL SAFETY RULES
WARNING: Read all instructions.
Failure to follow all instructions listed
below may result in electric shock, fire and/
or serious injury.The term “power tool” in
all of the warnings listed below refers to
your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
SAVE THESE INSTRUCTION
1. WORK AREA
a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b) Do not operate power tools in
explosive atmospheres, such as in
the presence of flammable liquids,
gases or dust. Power tools create sparks
which may ignite the dust or fumes.
c) Keep children and bystanders
away while operating a power tool.
Distractions can cause you to lose control.
2. ELECTRICAL SAFETY
a) Power tool plugs must match the
outlet. Never modify the plug in any
way. Do not use any adapter plugs
with earthed (grounded) power tools.
Unmodified plugs and matching outlets
will reduce risk of electric shock.
b) Avoid body contact with earthed or
grounded surfaces, such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
c) Do not expose power tools to rain or
wet conditions. Water entering a power
tool will increase the risk of electric shock.
d) Do not abuse the cord. Never use
the cord for carrying, pulling or
unplugging the power tool. Keep
cord away from heat, oil, sharp edges
or moving parts. Damaged or entangled
cords increase the risk of electric shock.
e) When operating a power tool
outdoors, use an extension cord
suitable for outdoor use. Use of a cord
suitable for outdoor use reduces the risk
of electric shock.
f) If operating a power tool in a
damp location is unavoidable, use
a residual current device (RCD)
protected supply. Use of an RCD
reduces the risk of electric shock.
3. PERSONAL SAFETY
a) Stay alert, watch what you are
doing and use common sense when
operating a power tool. Do not use
a power tool while you are tired or
under the influence of drugs, alcohol
or medication. A moment of inattention
while operating power tools may result in
serious personal injury.
b) Use safety equipment. Always wear
eye protection. Safety equipment such
as dust mask, non-skid safety shoes,
hard hat, or hearing protection used
for appropriate conditions will reduce
personal injuries.
c) Avoid accidental starting. Ensure the
switch is in the off-position before
plugging in. Carrying power tools with
your finger on the switch or plugging
in power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench
before turning the power tool on. A
wrench or a key left attached to a rotating
part of the power tool may result in
personal injury.
e) Do not overreach. Keep proper
footing and balance at all times. This
enables better control of the power tool in
unexpected situations.
f) Dress properly. Do not wear loose
clothing or jewellery. Keep your
hair, clothing and gloves away from
moving parts. Loose clothes, jewellery
or long hair can be caught in moving
parts.
g) If devices are provided for the
connection of dust extraction and
collection facilities, ensure these are
connected and properly used. Use
of these devices can reduce dust-related
hazards.
4. POWER TOOL USE AND CARE
a) Do not force the power tool. Use
the correct power tool for your
application. The correct power tool will

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do the job better and safer at the rate for
which it was designed.
b) Do not use the power tool if the
switch does not turn it on and off.
Any power tool that cannot be controlled
with the switch is dangerous and must be
repaired.
c) Disconnect the plug from the power
source and/or the battery pack from
the power tool before making any
adjustments, changing accessories,
or storing power tools. Such preventive
safety measures reduce the risk of starting
the power tool accidentally.
d) Store idle power tools out of the
reach of children and do not allow
persons unfamiliar with the power
tool or these instructions to operate
the power tool. Power tools are
dangerous in the hands of untrained
users.
e) Maintain power tools. Check for
misalignment or binding of moving
parts, breakage of parts and any
other condition that may affect the
power tool’s operation. If damaged,
have the power tool repaired before
use. Many accidents are caused by poorly
maintained power tools.
f) Keep cutting tools sharp and clean.
Properly maintained cutting tools with
sharp cutting edges are less likely to bind
and are easier to control.
g) Use the power tool, accessories
and tool bits etc. in accordance
with these instructions, taking into
account the working conditions and
the work to be performed. Use of the
power tool for operations different from
those intended could result in a hazardous
situation.
5. SERVICE
a) Have your power tool serviced by
a qualified repair person using only
identical replacement parts.This will
ensure that the safety of the power tool is
maintained.
CHAIN SAW SAFETY
WARNINGS
1. Keep all parts of the body away
from the saw chain when the chain
saw is operating. Before you start
the chain saw, make sure the saw
chain is not contacting anything. A
moment of inattention while operating
chain saws may cause entanglement
of your clothing or body with the saw
chain.
2. Always hold the chain saw with
your right hand on the rear handle
and your left hand on the front
handle. Holding the chain saw with a
reversed hand configuration increases
the risk of personal injury and should
never be done
3. Hold the power tool by insulated
gripping surfaces only, because
the saw chain may contact hidden
wiring or its own cord. Saw chains
contacting a “live” wire may make
exposed metal parts of the power tool
“live” and could give the operator an
electric shock.
4. Wear safety glasses and hearing
protection. Further protective
equipment for head, hands, legs
and feet is recommended. Adequate
protective clothing will reduce personal
injury by flying debris or accidental
contact with the saw chain
5. Do not operate a chain saw in a
tree. Operation of a chain saw while up
in a tree may result in personal injury.
6. Always keep proper footing and
operate the chain saw only when
standing on fixed, secure and level
surface. Slippery or unstable surfaces
such as ladders may cause a loss of
balance or control of the chain saw.
7. When cutting a limb that is under
tension be alert for spring back.
When the tension in the wood fibres is
released the spring loaded limb may
strike the operator and/or throw the
chain saw out of control.
8. Use extreme caution when cutting

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brush and saplings. The slender
material may catch the saw chain and
be whipped toward you or pull you off
balance.
9. Carry the chain saw by the front
handle with the chain saw switched
off and away from your body. When
transporting or storing the chain
saw always fit the guide bar cover.
Proper handling of the chain saw will
reduce the likelihood of accidental
contact with the moving saw chain.
10. Follow instructions for lubricating,
chain tensioning and changing
accessories. Improperly tensioned
or lubricated chain may either break or
increase the chance for kickback.
11. Keep handles dry, clean, and free
from oil and grease. Greasy, oily
handles are slippery causing loss of
control.
12. Cut wood only. Do not use chain
saw for purposes not intended. For
example: do not use chain saw for
cutting plastic, masonry or non-
wood building materials. Use of the
chain saw for operations different than
intended could result in a hazardous
situation
13. Do not use any attachments or
accessories not recommended
by the manufacturer. The use of
attachments or accessories not
recommended can result in serious
personal injury. To reduce the risk
of injury, the operator should use the
accessory or attachment according to the
instruction
14. We recommend that the first-time
user should, as a minimum practice,
cutting logs on a saw-horse or
cradle
15. Position the cord so that it will not
be caught on branches and the like,
during cutting.
16. Always wear safety goggles or
safety glasses with side shields
when operating tools. Failure to do
so could result in objects being thrown
into your eyes causing possible serious
injury.
17. To avoid injury from unexpected
starting or electrical shock during
assembly or adjustment, do not plug
the power cord into a source of
power.
18. When the machine is not in use
and to prevent unauthorized use,
the switch should be locked in the
“OFF” position.
CAUSES AND OPERATOR PREVENTION
OF KICKBACK:
1. Kickback may occur when the nose or tip of
the guide bar touches an object, or when the
wood closes in and pinches the saw chain in
the cut.
2.Tip contact in some cases may cause a
sudden reverse reaction, kicking the guide bar
up and back towards the operator.
3. Pinching the saw chain along the top of the
guide bar may push the guide bar rapidly back
towards the operator.
4. Either of these reactions may cause you to
lose control of the saw which could result in
serious personal injury. Do not rely exclusively
upon the safety devices built into your saw.
As a chain saw user, you should take several
steps to keep your cutting jobs free from
accident or injury.
5. Kickback is the result of tool misuse and/or
incorrect operating procedures or conditions
and can be avoided by taking proper
precautions as given below:
• Maintain a firm grip, with thumbs
and fingers encircling the chain saw
handles, with both hands on the saw
and position your body and arm to
allow you to resist kickback forces.
Kickback forces can be controlled by the
operator, if proper precautions are taken.
Do not let go of the chain saw.
• Maintain a firm grip, with thumbs
and fingers encircling the chain saw
handles, with both hands on the saw
and position your body and arm to
allow you to resist kickback forces.
Kickback forces can be controlled by
the operator, if proper precautions
are taken. Do not let go of the chain saw.
• Do not overreach and do not cut

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above shoulder height.This helps
prevent unintended tip contact and
enables better control of the chain saw in
unexpected situations.
• Only use replacement bars and
chains specified by the manufacturer.
Incorrect replacement bars and chains may
cause chain breakage and/or kickback.
• Follow the manufacturer’s sharpening
and maintenance instructions for the
saw chain. Decreasing the depth gauge
height can lead to increased kickback
INSTRUCTIONS CONCERNING THE
PROPER TECHNIQUES FOR BASIC
FELLING, LIMBING, AND CROSS-
CUTTING
1. FELLING A TREE
When bucking and felling operations are
being performed by two or more persons at
the same time, the felling operations should
be separated from the bucking operation by
a distance of at least twice the height of the
tree being felled.Trees should not be felled in
a manner that would endanger any person,
strike any utility line or cause any property
damage. If the tree does make contact with
any utility line, the company should be notified
immediately.
The chain saw operator should keep on the
uphill side of the terrain as the tree is likely to
roll or slide downhill after it is felled.
An escape path should be planned and
cleared as necessary before cuts are started.
The escape path should extend back and
diagonally to the rear of the expected line of
fall as illustrated in Figure 1.
Before felling is started, consider the natural
lean of the tree, the location of larger branches
and the wind direction to judge which way the
tree will fall.
Remove dirt, stones, loose bark, nails, staples
and wire from the tree.
2. NOTCHING UNDERCUT
Make the notch 1/3 the diameter of the
tree, perpendicular to the direction of falls
as illustrated in Figure 2. Make the lower
horizontal notching cut first.This will help to
avoid pinching either the saw chin or the guide
bar when the second notch is being made.
3. FELLING BACK CUT
Make the felling back cut at least 50 mm higher
than the horizontal notching cut as illustrated
in Figure 2. Keep the felling back cut parallel
to the horizontal notching cut. Make the felling
back cut so enough wood is left to act as a
hinge.The hinge wood keeps the tree from
twisting and falling in the wrong direction. Do
not cut through the hinge.
As the felling gets close to the hinge, the tree
should begin to fall. If there is any chance that
the tree may not fall in desired direction or it
may rock back and bind the saw chain, stop
cutting before the felling back cut is complete
and use wedges of wood, plastic or aluminium
to open the cut and drop the tree along the
desired line of fall.
When the tree begins to fall remove the chain
saw from the cut, stop the motor, put the chain
saw down, then use the retreat path planned.
Be alert for overhead limbs falling and watch
your footing.
4. LIMBING A TREE
Limbing is removing the branches from a
fallen tree. When limbing leave larger lower
limbs to support the log off the ground.
Remove the small limbs in one cut as
illustrated in Figure 3. Branches under tension
should be cut from the bottom up to avoid
binding the chain saw.
5. BUCKING A LOG
Bucking is cutting a log into lengths. It is
important to make sure your footing is firm
and your weight is evenly distributed on both
feet. When possible, the log should be raised
and supported by the use of limbs, logs or
chocks. Follow the simple directions for easy
cutting.
When the log is supported along its entire
length as illustrated in Figure 4, it is cut from
the top (overbuck).
When the log is supported on one end, as
illustrated in Figure 5, cut 1/3 the diameter
from the underside (underbuck).Then make
the finished cut by overbucking to meet the

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first cut.
When the log is supported on both ends, as
illustrated in Figure 6, cut 1/3 the diameter
from the top (overbuck). Then make the
finished cut by underbucking the lower 2/3 to
meet the first cut.
When bucking on a slope always stand on the
uphill side of the log, as illustrated in Figure 7.
When “cutting through”, to maintain complete
control release the cutting pressure near the
end of the cut without relaxing your grip on
the chain saw handles. Don’t let the chain
contact the ground. After completing the cut,
wait for the saw chain to stop before you move
the chain saw. Always stop the motor before
moving from tree to tree.
Felling direction
Escape
route
Danger zone
Danger zone
Escape
route
Figure 1 – Description of felling: escape routes
Direction of fall
Felling back cut
50mm
50mm
Hinge
Notch
Figure 2 – Description of felling: undercutting
Limb cut
Keep work off ground leave support limbs until log is cut
Figure 3 –Tree limbing
Cut from top (overbuck) avoid cutting earth
Figure 4 – Log supported along the entire
length

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SYMBOLS
Read the manual
WARNING
Wear ear protection
Wear eye protection
Wear dust mask
Gloves with saw protection
Boots with saw protection, steel toe-
cap and non-slip sole
Correct Direction of Cutting-Teeth
Chain stop
Tip contact may cause the guide
bar to move suddenly upward and
backwards, which may cause serious
injury to user.
Contact of the guide bar tip with any
object should be avoided
Do not use one handed when
operating the chain saw.
Always use two hands when
operating the chain saw.
Double insulation. When servicing,
use only identical replacement parts.
Do not expose to rain
Remove plug from the mains
immediately if the cable is damaged
or cut.
RCM approval mark
2
nd
cut overbuck (2/3 diameter) to
meet 1
st
cut (to avoid pinching)
1
st
cut underbuck
(1/3 diameter) to
avoid splintering
Figure 5 – Log supported on end
1
st
cut overbuck (1/3 diameter)
to avoid splintering
2
nd
cut underbuck (2/3 diameter)
to meet 1
st
cut (to avoid pinching)
Figure 6 – Log supported both ends
Stand on uphill side when cutting because log may roll
Figure 7 – Bucking a log

Chain Saw WG303E
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3
14
20
17 21
18
13 14 15 16
7
8
9
10
11
12
22
23
19
456
2
1

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1. REAR HANDLE
2. ON/OFF SWITCH
3. LOCK-OFF BUTTON
4. OIL FILLER CAP
5. CHAIN STOP LEVER (HAND GUARD)
6. FRONT HANDLE
7. BAR
8. CHAIN
9. GRIPPING TEETH
10. CHAIN TENSIONING KNOB
11. CHAIN COVER
12. BAR AND CHAIN STORAGE/TRANSPORTATION COVER
13. DRIVE SPROCKET
14. CHAIN DIRECTION SYMBOL
15. BAR LOCATING TABS
16. OIL OUTLET
17. FASTENING BAR BOLT
18. BAR TENSIONING PLATE
19. OIL LEVEL WINDOW
20. CHAIN CATCH
21. BAR CLAMP
22. EXTENSION CORD HOLDER
23. REAR HAND GUARD
Not all the accessories illustrated or described are included in standard delivery.

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TECHNICAL DATA
Type WG303E (3- designation of machinery, representative of Chain Saw)
Voltage 220-240V~50/60Hz
Rated power 2000W
Bar length 400mm
Chain speed 12m/s
Oil tank capacity 200ml
Chain pitch 3/8”
Number of chain links 57
Chain gauge 0.05”
Saw chain type ES:91VG
Bar type ES:160SDEA041
Weight (chain & bar included) 4.8kg
Protection class /II
ACCESSORIES
Lubrication oil 100ml
Blade protection cover 1
Chain 1
Bar 1
We recommend that you purchase your accessories from the same store that sold you the tool.
Use good quality accessories marked with a well-known brand name. Choose the type according
to the work you intend to undertake. Refer to the accessory packaging for further details. Store
personnel can assist you and offer advice.

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OPERATION INTRODUCTION
INTENDED USE
The chain saw is intended for sawing of trees, tree
trunks, branches, wooden beams, planks, etc. Cuts can
be sawed with or across the grain.This product is not
suitable for sawing mineral materials.
ASSEMBLY
WARNING! Do not connect the chain saw to
mains before it is completely assembled.
Always use gloves when handling the chain.
CHAIN AND GUIDE BAR ASSEMBLY
1. Unpack all parts carefully.
2. Place the chain saw on a solid, level surface.
3. Use only genuine WORX chains designed for
chainbar.
4. Slide the Chain (8) in the slot around the Guide bar
(7). Ensure the Chain is in correct running direction
by comparing it to the Chain Direction Symbol (14)
found on the saw body (See Fig. B). Ensure the Bar
Tensioning Plate (18) is facing outward (See Fig. A).
5. Fit the Chain onto the Drive Sprocket (13), so that the
Fastening Bar Bolt (17) and the two Bar LocatingTabs
(15) on the Bar Clamp (21) fit into the keyway of the
opening on the Guide Bar (7).
6. Check to see if all parts are seated properly (See Fig.
C1).
7. Fit the Chain Cover (11), ensure that the Chain Catch
(20) slides properly into the Chain Cover (See Fig.
C2).
18
87
A
13 14
15
17
B
C1
11
20
C2

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8. Tighten the Chain Cover by turning the Chain
Tensioning Knob (10) clockwise until it is tight (See
Fig. D).
WARNING:The chain is not yet tensioned.
Tensioning the chain applies as described under
“TENSIONING CHAIN”. The chain now needs to be
inspected to make sure it is properly tensioned.
TENSIONING CHAIN
NOTE: New saw chains will stretch. Check the chain
tension frequently when first used and tighten when the
Chain (8) becomes loose around the Guide Bar (7).
WARNING:
• Unplugchainsawfrompowersourcebefore
adjusting saw chain tension.
• Cuttingedgesonchainaresharp.Use
protective gloves when handling chain.
• Maintainproperchaintensionalways.Aloose
chain will increase the risk of kickback. A
loose chain may jump out of guide bar groove.
This may injure operator and damage chain. A
loose chain will cause chain, bar, and sprocket
to wear rapidly.
1. Place the chain saw on any suitable flat surface.
2. Turn the ChainTensioning Knob (10) clockwise until
it is hand tight.The tension is automatically set while
the ChainTensioning Knob is being tightened.
The ratchet mechanism (a) prevents the chain tension
from loosening (See Fig. E2).
3. Double check the tension set by the automatic Chain
Tensioning Knob.The correct chain tension is reached
when the Chain (8) can be raised approx. 3-6mm
from the Chain Bar (7) in the center.This should be
done by using one hand to raise the chain against the
weight of the machine (See Fig. E1).
Use a screwdriver to move chain around Guide Bar
to ensure kinks do not exist.The chain should rotate
freely (See Fig. E3).
4. The Chain will stretch from use and lose proper
tension. To retension the chain simply repeat steps
1 - 3 listed above.
LUBRICATION
IMPORTANT: The chain saw is not supplied
filled with oil. It is essential to fill with oil
before use. Never operate the chain saw without
chain oil or at an empty oil tank level, as this will
result in extensive damage to the product.
11
10
D
3-6mm
Bar
E1
a
Ratchet mechanism
E2
Run Screwdriver along the
chain to check for kinks
E3

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NOTE: Chain life and cutting capacity depend
on optimum lubrication. Therefore, the chain is
automatically oiled during operation.
FILLING OIL TANK:
1. Set chain saw on any suitable surface with oil filler
cap facing upward.
2. Clean area around the oil filler cap with cloth and
unscrew the cap by turning it counter clockwise.
3. Add bar and chain oil until reservoir is full.
4. Avoid dirt or debris entering oil tank, refit Oil Filler
Cap and tighten by turning clockwise until hand tight.
IMPORTANT: To allow venting of the oil
reservoir, small breather channels are
provided between the oil filler cap and the
strainer, to prevent leakage ensure machine is
left in a horizontal position (Oil Filler Cap (4)
uppermost) when not in use.
It is important to use only the recommended oil
to avoid damage to the chain saw. Never use
recycled/old oil. Use of non approved oil will
invalidate the warranty.
CHECKING THE AUTOMATIC OILER
Proper functioning of the automatic oiler can be checked
by running the chain saw and pointing the tip of the
Guide bar (7) towards a piece of cardboard or paper
on the ground. If an increasing oil pattern develops on
the cardboard, the automatic oiler is operating fine. If
there is no oil pattern, despite a full oil reservoir, contact
WORX customer service agent or WORX approved
service agent.
CAUTION: Do not touch the ground with the
chain. Ensure safety clearance of 30cm.
OPERATION
1. SWITCHING ON AND OFF (See Fig. F)
ATTENTION: Check the voltage and current
supply: The voltage and current supply must
comply with the ratings on the product plate.
For switching on the tool, press the Lock-off Button
(3), then fully press the On/Off Switch (2) and hold in this
position.The lock-off button can now be released.
For switching off, release the on/off switch.
After sawing, do not stop the chain saw by activating the
Chain Stop Lever (Hand Guard) (5).
2
3
F

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2. CHAIN STOP LEVER (HAND GUARD) (See Fig.
G1)
The Chain Stop Lever (Hand Guard) (5) is a safety
mechanism that causes the Chain (8) to quickly stop. In
many cases when kickback occurs the operator’s hand
strikes the Chain Stop Lever (Hand Guard) causing it
to activate. When activated, the moving Chain quickly
stops.
The following function check should be carried
out at regular intervals. Push the Chain Stop Lever
(hand guard) (5) forwards (position ) and start the chain
saw.The Chain should not move.To deactivate the Chain
Stop Lever, release the On/Off Switch (2) and pull the
Chain Stop Lever (Hand Guard) backwards (position )
(See Fig. G1).
CUTTING
IMPORTANT: Is the oil reservoir filled? Check the
Oil Level Window (19) prior to starting and
regularly during operation. Refill oil when oil level is
low. A full oil tank will last approx. 20 minutes
depending on sawing intensity and stops (See Fig. G2).
Check recent replaced chain tension about every 10
minutes during operation.
1. Connect saw to extension cord. Connect extension
cord to power supply (See Fig. G3).
2. Make sure section of log to be cut is not laying on
the ground.This will keep the chain (8) from touching
the ground as it cuts through the log.Touching the
ground while the Chain is moving is dangerous and
will dull the Chain.
3. Use both hands to grip saw. Always use left hand to
grip front handle and right hand to grip rear handle.
Use a firm grip.Thumbs and fingers must wrap
around saw handles (See Fig. H).
4. Make sure your footing is firm. Keep shoulder width
feet apart. Divide your weight evenly on both feet.
5. When ready to make a cut, push the Lock-off Button
completely in with the right thumb and squeeze the
trigger.This will turn saw on. Releasing the trigger
will turn the saw off. Make sure the saw is running at
full speed before starting a cut.
6. When starting a cut, slowly place moving chain
against the wood. Hold saw firmly in place to avoid
possible bouncing or skating (sideways movement)
of saw.
7. Guide the saw using light pressure and do not put
excessive force on the saw. The motor will overload
and can burn out. It will do the job better and safer at
the rate for which it was intended.
1
1
2
5
G1
19
G2
G3
H

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8. Remove the saw from a cut with the saw running
at full speed. Stop the saw by releasing the On/off
Switch. Make sure the chain has stopped before
setting the saw down.
9. Keep practicing on scrap logs in a secure working
area until you get the hang of it and can saw with
ease, using a fluid motion and a steady cutting rate.
KICKBACK SAFETY DEVICES ON THIS SAW
This saw has a low-kickback chain and reduced kickback
Guide Bar. Both items reduce the chance of kickback.
However, kickback can still occur with this saw.
The following steps will reduce the risk of kickback.
• Use both hands to grip saw while saw is running.
Use firm grip.Thumbs and fingers must wrap around
saw handles.
• Keep all safety items in place on saw. Make sure they
work properly.
• Do not overreach or cut above shoulder height.
• Keep solid footing and balance at all times.
• Stand slightly to left side of saw. This keeps your
body from being in direct line with chain.
• Do not let guide bar nose touch anything when chain
is moving.
• Never try cutting through two logs at same time.
Only cut one log at a time.
• Do not bury the Guide Bar nose or try plunge cut
(boring into wood using guide bar nose).
• Watch for shifting of wood or other forces that may
pinch chain.
• Use extreme caution when reentering a previous cut.
• Use only the low-kickback chain and guide bar that
were supplied with this chain saw.
• Never use a dull or loose chain. Keep chain sharp
with proper tension.
HOW TO USE SAW SAFELY
1. Use the chain saw only with secure footing.
2. Hold the chain saw at the right-hand side of your
body (See Fig. I).
3. The Chain (8) must be running at full speed before it
makes contact with the wood.
4. Use the metal GrippingTeeth (9) to secure the saw
onto the wood before starting to cut.
5. Use the GrippingTeeth as a leverage point (a) while
cutting (See Fig. J).
6. Do not operate the chain saw with arms fully
extended, attempt to saw areas which are difficult to
reach, or stand on a ladder while sawing (See Fig. K).
Never use the chain saw above shoulder height.
I
9
J
K

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CUTTING WOOD UNDER TENSION (See Fig. L)
WARNING: When cutting a limb that is under
tension, use extreme caution. Be alert for
wood springing back. When wood tension is
released, limb could spring back and strike
operator causing severe injury or death.
When sawing logs supported on both ends, start the
cut from above (Y) about 1/3 of the diameter into the
log and then finish the cut (Z) from below, in order to
avoid contact of the chain saw with the ground. When
sawing logs supported on only one end, start the cut
from below (Y) about 1/3 of the diameter into the log
and finish the cut from above (Z) in order to avoid log
splitting or jamming of the chain saw.
FELLING TREES (See Fig. M)
WARNING: Always wear a hard hat to
protect head against falling branches. The
chain saw can only be used to fell trees smaller
in diameter than the length of the chain bar.
Safe Felling Area: Secure work area. Ensure
no persons or animals are in the vicinity of the
falling tree.
Never attempt to free a jammed saw with the
motor running. Use wedges to free chain and
chain bar.
When any other cutting operation and a felling
operation are being performed by two or more persons
at the same time, the felling operation should be
separated from the cutting operation by a distance of
at least twice the height of the tree being felled.Trees
should not be felled in a manner that would endanger
any person, strike any utility line or cause any property
damage. If the tree does make contact with any utility
line, the company should be notified immediately.
The chain saw operator should keep on the uphill side
of the terrain as the tree is likely to roll or slide downhill
after it is felled.
Escape Route: An escape path should be planned
and cleared before any cuts are started. Make sure to
remove any low hanging limbs up to shoulder height,
as well as all undergrowth around the base of the tree
that may prove to be an obstacle during escape. Your
escape paths should be roughly 135 degrees away from
the intended felling direction.
Direction of Fall: Before felling is started, consider the
natural lean of the tree, the location of larger branches
and the wind direction to judge which way the tree will
fall.
Remove dirt, stones, loose bark, nails staples, and wire
from the tree.
Z
Y
kg
Z
Y
L
fall
W
YZ
X
50mm
50mm
Direction of fall
Escape
route
Escape
route
Notching
UnderCut
Felling
backcut
M

Chain Saw WG303E
17
Felling is a process of three cuts. First you make
your notch cuts, which consist of a top and
bottom cut. Finally, you will make the felling cut.
Notching undercut: Make the notch (x-w)1/3 the
diameter of the tree.The notch is cut on the side of the
tree in the desired direction of the fall. Make the lower
horizontal notching cut first as this will help to avoid
pinching either the saw chain or the guide bar when the
second notch cut is being made.
Felling back cut: After removing the wood from the
notch make the felling back cut on the opposite side
of the notch. This is done by making a cut about two
inches higher than the center of the notch.This will leave
enough uncut wood between the felling cut and the
notch to form a hinge. This hinge will help prevent the
tree from falling in the wrong direction. Hinge holds the
tree on stump and helps control fall (See Fig. M).
As the felling back cut gets close to the hinge the tree
should begin to fall. If there is any chance that the tree
may not fall in desired direction or it may rock back and
bind the saw chain, stop cut before the felling back cut
is complete and use wedges (Z) of wood, plastic, or
aluminum to open the cut and drop the tree along the
desired line of fall.
When the tree begins to fall, remove the chain saw from
the cutting, stop the motor, put the chain saw down, and
then use the retreat path planned. Be alert for overhead
limbs falling and watch your footing.
To complete the felling operation, drive a wedge (Z) into
the horizontal felling cut (See Fig. M).
LIMBING A TREE (See Fig. N)
Limbing is removing the branches from a fallen tree.
When limbing, leave larger lower limbs to support the
log off the ground. Remove the small limbs in one cut as
illustrated. Branches under tension should be cut from
the bottom up to avoid binding the chain saw.
BUCKING A LOG (See Fig. O)
Bucking is cutting a log into lengths. It is important to
make sure your footing is firm and your weight is evenly
distributed on both feet. When possible, the log should
be raised and supported by limbs, logs or chocks. Follow
the simple directions for easy cutting.
When the log is supported along its entirety, laying flat
along the ground as illustrated, it is cut from the top
(overbuck) (See Fig. O).
When the log is supported on one end, as illustrated, cut
1/3 the diameter from the underside (underbuck).Then
make the finished cut by overbucking to meet the first
cut (See Fig. P).
N
O
2
2/3
1
1/3
P

Chain Saw WG303E
18
When the log is supported on both ends, as illustrated,
cut 1/3 the diameter from the top overbuck.Then make
the finished cut by underbucking the lower 2/3 to meet
the first cut (See Fig. Q).
WARNING (See Fig. R)
• If on slope, make sure log will not roll down hill.
Secure log by using wooden stakes. Drive wooden
stakes into ground on downhill side of log. Stand
on uphill side of log while cutting. Log may roll after
cutting.
• Never try cutting through two logs at same time. This
could increase the risk of kickback.
• While cutting log, never hold log with your hand, leg,
or foot.
• While cutting log, never allow another person to hold
log.
• Turn off and unplug saw before moving from one
place to another.
MAINTENANCE
Before any work on the machine itself, pull the
mains plug from the socket.
NOTE:To ensure long and reliable service, carry out the
following maintenance regularly.
Regularly check for obvious defects such as loose,
dislodged or damaged chain and guide bar, loose
fixings and worn or damaged components.
Check that covers and guards are undamaged and
correctly fitted. Carry out necessary maintenance or
repairs before using the chain saw.
If the chain saw should happen to fail despite the care
taken in manufacturing and testing, repair should be
carried out by an authorized customer service agent.
Before returning, ensure all oil in the oil tank has
been emptied.
BAR MAINTENANCE
To maximize bar life, the following bar maintenance is
recommended.
The bar rails that carry the chain should be cleaned
before storing the tool or if the bar or chain appear to be
dirty.
The rails should be cleaned every time the chain is
removed.
TO CLEAN THE BAR RAILS:
1. Remove chain cover and bar and chain (see section
ASSEMBLY).
12
2/3
1/3
Q
R

Chain Saw WG303E
19
2. Using a wire brush, screwdriver or similar tool, clear
the residue from the inner groove of the bar (See Fig.
U).
3. Make sure to clean oil passages thoroughly.
CONDITIONS WHICH REQUIRE GUIDE BAR
MAINTENANCE:
• Saw cuts to one side or at an angle.
• Saw has to be forced through the cut.
• Inadequate supply of oil to the bar and chain.
Check the condition of the guide bar each time the chain
is sharpened. A worn guide bar will damage the chain
and make cutting difficult.
After each use, with unit disconnected from power
source, clean all sawdust from the guide bar and
sprocket hole.
When rail top is uneven, use a flat file to restore square
edges and sides.
File Rail Edges
and Sides
Square
Worn Groove Correct Groove
Replace the guide bar when the groove is worn, the
guide bar is bent or cracked, or when excess heating or
burring of the rails occurs. If replacement is necessary,
use only the guide bar specified for your saw in the
repair parts list or on the decal located
on the chain saw.
REPLACING BAR & CHAIN
Fit the chain and guide bar as described in “Assembly
and Tensioning Chain”.
The circular groove of the guide bar will wear
particularly on the lower edge with time. When replacing
the chain turn the chain bar 180° to allow even wear, thus
extending chain bar life.
Check drive sprocket. If it is worn out or damaged due to
strain, have it exchanged by an authorized service agent.
If the chain bar is worn out or damaged, take the chain
tensioning catch off the bar by loosing the screw anti-
clockwise.Then fit the tensioning catch into the new bar
by tightening the screw clockwise.The catch protrude (a)
must be fitted into the bar hole (See Fig. S).
SHARPENING CHAIN
Have your chain sharpened professionally at your
approved service agent or sharpen the chain yourself
using the sharpening kit. Follow the sharpening
instructions supplied with the sharpening kit.
b
S
U

Chain Saw WG303E
20
LUBRICATE SPROCKET
WARNING: Wear heavy duty gloves when
performing an maintenance or service to this tool.
Always unplug the tool before performing any service or
maintenance on this tool.
NOTE:
It is not necessary to remove the chain or bar when
lubricating the sprocket.
1. Clean the bar and sprocket
2. Using a grease gun, insert the tip of the gun into the
lubrication hole and inject grease until it appears at
the outside edge of the sprocket tip (See Fig.T).
3. To rotate the sprocket release the chain stop and pull
the chain by hand until the ungreased side of the
sprocket is in line with the grease hole. Repeat the
lubrication procedure.
CLEANING/STORAGE
Clean the moulded plastic housing of the chain saw
using a soft brush and clean cloth. Do not use water,
solvents or polishes. Remove all debris, especially from
the motor cooling vents.
Remove and brush clean the cover plate, chain and chain
bar after 1 to 3 hours of use. Clean the area under the
cover plate, the drive sprocket and chain bar assembly
using a soft brush. Clean oil outlet with a clean cloth.
If the chain saw is to be stored for a longer period of
time, clean chain and chain bar.
Store in a secure, dry place out of the reach of children.
Do not place other objects on the chain saw.
To prevent leakage ensure machine is left in a horizontal
position (oil filler cap 4 uppermost).
When storing machine in original packaging the oil tank
must be completely emptied.
Injecting grease to lubricate
T