Husqvarna P02138HV User manual

120e Mark II
P02138HV
EN Operator's manual 2-33
P02138HV

Contents
Introduction..................................................................... 2
Safety..............................................................................4
Assembly...................................................................... 11
Operation...................................................................... 15
Maintenance................................................................. 22
Transportation...............................................................31
Storage......................................................................... 31
Technical data.............................................................. 31
Accessories.................................................................. 32
Introduction
Operator's manual
The initial language of this operator's manual
is English. Operator's manuals in other
languages are translations from English.
Overview
28
27
8
2
34
29
5
6
79 10 11 12 13
26
16 17 18
19
20
21
22
23
14
1
15
24 25
1. Product and serial number plate
2. Trigger lockout
3. Front handle
4. Cylinder cover
5. Chain brake and front hand guard
6. Muffler
7. Bar nose sprocket
8. Right hand guard
9. Trigger
10.Sprocket cover
11.Chain catcher
12.Guide bar
13.Saw chain
14.Starter handle
15.Chain oil tank
16.Starter
17.Fuel tank
18.Choke control
19.Rear handle
20.Stop switch
21.Idle adjustment screw
22.Primer bulb
23.Information and warning decal
24.Chain tensioner wheel
25.Knob
26.Guide-bar cover
27.Combination tool
28.Operator's manual
29.Right-hand brake trigger (some models)
2653 - 006 - 10.02.2020

Symbols on the product
Warning
Read this manual
Use approved head protection,
hearing protection and eye
protection
Use approved protective gloves
The product agrees with the
applicable EC Directives
Sound power level
Chain brake, not engaged (left).
Chain brake, engaged (right)
Choke control
Air purge bulb
Refuelling
Chain oil fill
This product agrees with the
applicable EAC directives
This product agrees with the
applicable Ukraine directives
This product agrees wtih the
applicable Korea directives
This product agrees wtih the
applicable Japan directives
NOISE dBA
Noise level
Hold the product properly with
both hands
Do not use with one hand
Avoid contact with nose of guide
bar
Beware of kickback
This product agrees with the
applicable Australia and New
Zealand electromagnetic
compatibility directives.
Note: Other symbols/decals on the product
refer to certification requirements for other
commercial areas.
Product liability
As referred to in the product liability laws, we
are not liable for damages that our product
causes if:
653 - 006 - 10.02.2020 3

• the product is incorrectly repaired.
• the product is repaired with parts that are
not from the manufacturer or not approved
by the manufacturer.
• the product has an accessory that is not
from the manufacturer or not approved by
the manufacturer.
• the product is not repaired at an approved
service center or by an approved authority.
Safety
Safety definitions
The definitions below give the level of severity
for each signal word.
WARNING: Injury to persons.
CAUTION: Damage to the
product.
Note: This information makes the product
easier to use.
General safety instructions
• Use the product correctly. Injury or death is
a possible result of incorrect use. Only use
the product for the tasks found in this
manual. Do not use the product for other
tasks.
• Read, understand and obey the
instructions in this manual. Obey the safety
symbols and the safety instructions. If the
operator does not obey the instructions and
the symbols, injury, damage or death is a
possible result.
• Do not discard this manual. Use the
instructions to assemble, to operate and to
keep your product in good condition. Use
the instructions for correct installation of
attachments and accessories. Only use
approved attachments and accessories.
• Do not use a damaged product. Obey the
maintenance schedule. Only do the
maintenance work that you find an
instruction about in this manual. An
approved service center must do all other
maintenance work.
• This manual cannot include all situations
that can occur when you use the product.
Be careful and use your common sense.
Do not operate the product or do
maintenance to the product if you are not
sure about the situation. Speak to a
product expert, your dealer, service agent
or approved service center for information.
• Disconnect the spark plug cable before you
assemble the product, put the product into
storage or do maintenance.
• Do not use the product if it is changed from
its initial specification. Do not change a part
of the product without approval from the
manufacturer. Only use parts that are
approved by the manufacturer. Injury or
death is a possible result of incorrect
maintenance.
• Do not breathe in the exhaust fumes from
the engine. A health risk can occur if you
breathe in exhaust fumes, chain oil fumes
and sawdust for a long period.
• Do not start the product indoors or near
flammable material. The exhaust fumes are
hot and can contain a spark which can start
a fire. Without sufficient airflow, injury or
death can result from asphyxiation or
carbon monoxide.
• This product makes an electromagnetic
field during operation. The electromagnetic
field can cause damage to medical
implants. Speak to your physician and
medical implant manufacturer before you
operate the product.
• Do not let a child operate the product.
• Do not let a person, without knowledge of
the instructions, operate the product.
• Always monitor a person, with decreased
physical capacity or mental capacity, that
uses the product. A responsible adult must
be there at all times.
• Lock the product in an area that children
and not approved persons cannot access.
4653 - 006 - 10.02.2020

• The product can eject objects and cause
injuries. Obey the safety instructions to
decrease the risk of injury or death.
• Do not go away from the product when the
engine is on. Stop the engine and make
sure that the chain does not rotate.
• The operator of the product is responsible if
an accident occurs.
• Make sure that parts are not damaged
before you use the product.
• Refer to national or local laws. They can
prevent or decrease the operation of the
product in some conditions.
Safety instructions for operation
• Continuous or regular operation of the
product can cause "white finger" or
equivalent medical problems from
vibrations. Examine the condition of your
hands and fingers if you operate the
product continuously or regularly. If your
hands or fingers have discoloration, have
pain, tingle, or are numb, stop work and
speak to a physician immediately.
• Make sure the product is fully assembled
before you use it.
• The product can cause objects to eject,
which can cause damage to the eyes.
Always use approved eye protection when
you operate the product.
• Be careful, a child can come near the
product without your knowledge during
operation.
• Do not operate the product if there are
persons in the work area. Stop the product
if a person goes into the work area.
• Make sure that you are always in control of
the product.
• The product must be operated with two
hands. Do not operate the product with one
hand. Serious injury to the operator,
workers, bystanders, or a combination of
these persons may result from operation
with only one hand.
• Hold the front handle with your left hand
and the rear handle with your right hand.
Hold the product on the right side of your
body.
• Do not operate the product when you are
fatigued, ill or under the influence of alcohol
or other drugs.
• Do not use the product if you cannot
receive aid if an accident occurs. Make
others aware that you will operate the
product before you start the product.
• Do not turn with the product before you
make sure that no persons or animals are
in the safety area.
• Remove all unwanted materials from the
work area before you start. If the chain hits
an object, the object can eject and cause
injury or damage. Unwanted material can
wind around the chain and cause damage.
• Do not use the product in bad weather,
such as fog, rain, strong winds, risk of
lightning or other weather conditions.
Dangerous conditions, such as slippery
surfaces, can occur because of bad
weather.
• Make sure that you can move freely and
work in a stable position.
653 - 006 - 10.02.2020 5

• Make sure that you cannot fall when you
use the product. Do not tilt when you
operate the product.
• Always hold the product with your two
hands. Hold the front handle with your left
hand and the rear handle with your right
hand. Hold the product on the right side of
your body.
• If the choke control is in the choke position
when the engine starts, the chain starts to
turn.
• Stop the engine before you move the
product.
• Do not put down the product with the
engine on.
• Before you remove the unwanted materials
from the product, stop the engine. Let the
chain stop before you or another person
can remove the cut material.
• Do not operate this product in a tree.
Operation of the product while up in a tree
may result in personal injury.
• The chain brake must be engaged when
the product is started to decrease the risk
that the saw chain touches you during start.
• Avoid kickback, skating, bouncing and
dropping, which can result in serious injury.
• Obey all safety rules to help avoid kickback
and other forces which can result in serious
injury.
• Adjust the saw chain tension regularly to
make sure that the saw chain does not
slack. A slack saw chain may jump off and
cause serious injury or death.
• Do not fell trees using an incorrect
procedure. This can cause injury to
persons, hit a utility line or cause damage
to property.
• The operator should remain on the uphill
side of the terrain as the tree is likely to roll
or slide downhill after it is felled.
6653 - 006 - 10.02.2020

• Plan and clear an escape path before cuts
are started. The escape path should extend
back and diagonally to the rear of the
expected line of fall.
• Always stop the engine before you move
the product between the trees.
• Make sure you firmly plant your feet on the
ground and distribute your weight evenly.
• Always keep proper footing and operate
the product only when standing on fixed,
secure and level surface. Slippery or
unstable surfaces such as ladders may
cause a loss of balance or control.
Kickbacks, skating, bouncing and dropping
Different forces can have an effect on the safe
control of the product.
•Skating is when the guide bar glides or
moves quickly across the wood.
•Bouncing is when the guide bar lifts off the
wood and touches it again and again.
•Dropping is when the product drops down
after the cut is made. This can cause the
moving chain to touch a part of the body or
other objects, causing injury or damage.
•Kickback is when the end of the guide bar
touches objects and moves rearward, up or
suddenly forward. Kickback also occurs
when the wood closes in and pinches the
saw chain during the cut. Loss of control
can result if the product touches an object
in wood.
•Rotational Kickback can occur when the
moving chain touches an object at the
653 - 006 - 10.02.2020 7

top of the guide bar. This can cause the
chain to bury into the object and cause
the chain to stop immediately. The result
is a very fast, reverse reaction that
moves the guide bar up and rearward in
the direction of the operator.
•Pinch-Kickback can occur when the saw
chain suddenly stops during the cut. The
wood closes in and pinches the moving
saw chain along the top of the guide
bar. The sudden stop of the chain
reverses the chain force and causes the
product to move in the opposite
direction of the turn of the chain. The
product moves rearward in the direction
of the operator.
•Pull-In can occur when the saw chain
suddenly stops when the moving chain
touches an object in the wood along the
bottom of the guide bar. The sudden
stop pulls the product forward and away
from the operator, which can easily
cause the loss of control of the product
by the operator.
Make sure that you understand the different
forces and how to prevent them before you
operate the product.
To prevent kickbacks, skating, bouncing and
dropping
• While the engine runs, make sure to hold
the product tightly. Keep your right hand on
the rear handle and the left hand on the
front handle. Tightly hold with thumbs and
fingers around the handles. Do not let go.
8653 - 006 - 10.02.2020

• Keep control of the product during the cut
and after the wood falls to the ground. Do
not let the weight of the product drop down
after the cut is made.
• Make sure that the area in which you are
cutting is free from blockage. Do not let the
nose of the guide bar touch a log, branch
or other blockages while you operate the
product.
• Cut at high engine speeds.
• Do not overreach or cut above shoulder
height.
• Obey the manufacturer's sharpening and
maintenance instructions for the saw chain.
• Only use replacement guide bars and saw
chains specified by the manufacturer.
• The risk of kickback is increased if the
depth gauge setting is too large.
Personal protective equipment
• Always use the correct personal protective
equipment when you operate the product.
The personal protective equipment does
not erase the risk of injury. The personal
protective equipment decreases the grade
of injury if an accident occurs.
• Generally, clothes should be close-fitting
without restricting your freedom of
movement.
• Use an approved protective helmet.
• Always use approved ear protection while
you operate the product. Noise for a long
period can cause hearing loss.
• Use protective glasses or a face visor to
reduce the risk of injury from thrown
objects. The product is capable of throwing
objects, such as wood chips, small pieces
of wood, etc., at great force. This can result
in serious injury, especially to the eyes.
• Use gloves with chainsaw protection.
• Use trousers with chainsaw protection.
• Use boots with chainsaw protection, steel
toe-cap and non-slip sole.
• Make sure that you have a first aid kit near.
• Sparks can come from the muffler, the
guide bar and saw chain or other sources.
Always have fire extinguishing tools and a
shovel available to help prevent forest fires.
Protective devices on the product
• Make sure that you regularly do the
maintenance to the product.
• The life of the product increases.
• The risk of accidents decreases.
Let an approved dealer or an approved
service center regularly examine the
product to do adjustments or repairs.
• Do not use a product with damaged
protective equipment. If the product is
damaged, speak to an approved service
center.
Stop switch
Start the engine. Make sure that the engine
stops when you move the stop switch to the
stop position.
653 - 006 - 10.02.2020 9

To examine the throttle trigger lockout
1. Make sure that the trigger (B) is locked at
idle when you release the trigger lockout
(A).
A
B
2. Push the trigger lockout (A) and make sure
that it goes back to its initial position when
you release it.
3. Push the trigger (B) and make sure that it
goes back to its initial position when you
release it.
4. Start the engine, and then apply full speed.
5. Release the trigger and examine if the saw
chain stops.
6. If the saw chain turns with an idle engine,
examine the idle adjustment screw of the
carburetor.
Guard
The guard prevents objects from being ejected
in the direction of the operator. The guard also
prevents accidental touch between the
operator and the saw chain.
• Make sure that the guard is permitted for
operation in combination with the product.
• Do not use the product without the guard.
• Make sure that the guard is not damaged.
Replace the guard if it is worn or has
cracks.
Fuel safety
• Do not start the product if there is fuel or
engine oil on the product. Remove the
unwanted fuel/oil and let the product dry.
Remove unwanted fuel from the product.
• If you spill fuel on your clothing, change
clothing immediately.
• Do not get fuel on your body, it can cause
injury. If you get fuel on your body, use a
soap and water to remove the fuel.
• Do not start the engine if you spill oil or fuel
on the product or on your body.
• Do not start the product if the engine has a
leak. Examine the engine for leaks
regularly.
• Be careful with fuel. Fuel is flammable and
the fumes are explosive and can cause
injuries or death.
• Do not breathe in the fuel fumes, it can
cause injury. Make sure that there is a
sufficient airflow.
• Do not smoke near the fuel or the engine.
• Do not put warm objects near the fuel or
the engine.
• Do not add the fuel when the engine is on.
• Make sure that the engine is cool before
you refuel.
• Before you refuel, open the fuel tank cap
slowly and release the pressure carefully.
• Do not add fuel to the engine in an indoor
area. Not sufficient airflow can cause injury
or death because of asphyxiation or carbon
monoxide.
• Tighten the fuel tank cap carefully or a fire
can occur.
• Move the product at a minimum of 3 m (10
ft) from the position where you filled the
tank before a start.
• Do not put too much fuel in the fuel tank.
• Make sure that a leak cannot occur when
you move the product or fuel container.
• Do not put the product or a fuel container
where there is an open flame, spark or pilot
light. Make sure that the storage area does
not contain an open flame.
• Only use approved containers when you
move the fuel or put the fuel into storage.
• Empty the fuel tank before long-term
storage. Obey the local law on where to
dispose fuel.
• Clean the product before long-term
storage.
10 653 - 006 - 10.02.2020

• Remove the spark plug cable before you
put the product into storage to make sure
that the engine does not start accidentally.
Safety instructions for maintenance
• Disconnect the spark plug before doing
maintenance on the product, not including
carburetor adjustments.
• Have all product servicing done by an
approved dealer, not including the tasks in
Maintenance on page 22 .
• Make sure the saw chain stops moving
when the throttle trigger is released.
• Keep the handles dry, clean, and free from
oil or fuel mixture.
• Keep caps and fasteners correctly
tightened.
• Replacement components that are not
approved or the removal of safety devices
can cause damage to the product. This can
also cause possible injury to the operator
or bystanders. Only use accessories and
replacement parts as recommended. Do
not change your product.
• Keep the saw chain sharp and clean for
safe and high performance.
• Obey the instructions for lubricating and
changing accessories.
• Examine the product for damaged parts.
Before more use of the product, make sure
the damaged guard or part operates
correctly. Examine for broken or incorrectly
aligned parts, and parts that do not move
freely. Examine for other conditions that
can have an effect on the operation of the
product. Make sure the product is correctly
installed. A guard or other damaged part
must be repaired or replaced by an
approved dealer unless written in the
operator’s manual.
• When not in operation, keep the product in
a dry, high or locked area away from
children.
• During transportation or storage of the
product, use a transportation guard or case
to move the product.
• Do not use waste oil. Waste oil can be
dangerous to you and can cause damage
to the product and environment.
Assembly
WARNING: Read and understand
the safety chapter before you
assemble the product.
To assemble the guide bar and saw
chain (standard chain adjustment)
1. Remove the spark plug cap from the spark
plug during assembly to prevent an
accidental start.
2. Remove the bar nuts and the sprocket
cover. Remove the transportation guard
(A).
A
653 - 006 - 10.02.2020 11

3. Put the guide bar above the bar bolts.
Steer the guide bar to its most rear
position.
4. Put on protective chainsaw gloves.
5. Lift the saw chain above the drive sprocket
and engage it in the groove on the guide
bar. Start on the top edge of the guide bar.
6. Make sure that the edges of the cutting
links are turned forward on the top edge of
the guide bar.
7. Assemble the sprocket cover and steer the
chain adjuster pin to the hole in the guide
bar.
8. Make sure that the drive links of the saw
chain fit correctly on the drive sprocket.
Also make sure that the saw chain is
correctly engaged in the groove in the
guide bar.
9. Tighten the guide bar nuts with your
fingers.
10.Tighten the saw chain by turning the chain
tensioning screw clockwise with the
combination wrench
. Tighten the saw chain until it does not sag
from below the guide bar, but you can turn
it easily by hand.
12 653 - 006 - 10.02.2020

11.Hold up the end of the guide bar and
tighten the bar nuts with the combination
wrench.
• Examine the chain tension frequently
after you assemble a new saw chain
and until the saw chain has been run-in.
• Examine the chain tension regularly.
Correct chain tension results in good
cutting performance and a long life.
To assemble the guide bar and saw
chain (knob and wheel chain
adjustment)
1. Move the front hand guard in the direction
of the front handle to disengage the chain
brake.
2. Fold the knob out to open position.
3. Turn the knob counterclockwise to loosen
the bar cover.
653 - 006 - 10.02.2020 13

4. Remove the knob (A) and the sprocket
cover. Remove the transportation guard, if
installed.
A
5. Put the guide bar over the bar bolts. Steer
the guide bar to its most rear position. Put
the chain over the drive sprocket and
engage it in the groove on the guide bar.
Start on the top edge of the guide bar.
6. Make sure that the edges of the cutting
links are turned forward on the top edge of
the guide bar.
7. Assemble the sprocket cover and steer the
chain adjuster pin to the hole in the guide
bar. Make sure that the drive links of the
chain fit correctly on the drive sprocket.
Also make sure that the saw chain is
correctly engaged in the groove in the
guide bar.
8. Tighten the saw chain by turning the wheel
down (+). Tighten the chain until it does not
sag from below of the guide bar.
9. The saw chain is correctly tightened as it
does not sag from below the guide bar, but
you can turn it easily by hand.
14 653 - 006 - 10.02.2020

10.Hold up the guide bar tip and turn the knob
clockwise to tighten it.
• Examine the chain tension frequently
after you assemble a new saw chain
and until the saw chain has been run-in.
• Examine the chain tension regularly.
Correct chain tension results in good
cutting performance and a long life.
To reset the chain brake
If the clutch cover is removed accidentally
while the chain brake is locked, the chain
brake must be unlocked so the clutch cover
can be assembled without binding to the
clutch drum.
CAUTION: The chain brake spring
is under tension. Use care when
resetting the chain brake.
Note: Do not hold the brake band while
attempting to reset it.
1. Align the notches on the bar tool so that
they fit over the brake rotating link.
2. To reset the brake, rotate the link clockwise
until it stops. The front link will be in its
downward rotated position when the chain
brake is unlocked.
Operation
WARNING: Read and understand
the safety chapter before you
operate the product.
To use fuel
CAUTION: This product has a
two-cycle engine. Use a mixture of
gasoline and two-cycle engine oil.
Make sure to use the correct
quantity of oil in the mixture.
653 - 006 - 10.02.2020 15

Incorrect ratio of gasoline and oil
can cause damage to the engine.
Fuel mixture ratio
The fuel mixture ratio for the gasoline and two-
cycle engine oil is 50:1 (2%)
Gasoline Two-cycle engine oil
1 U.S. Gal. 77 ml (2.6 oz)
1 UK Gal. 95 ml (3.2 oz)
5 l 100 ml (3.4 oz)
To make the fuel mixture
1. Determine the correct quantity of gasoline
and engine oil (mixture ratio 50:1). Do not
make more than 30 days quantity of fuel
mixture. See
To use fuel on page 15 .
2. Add half of the gasoline quantity to a clean
fuel container with an antispill valve.
CAUTION: Do not use gasoline
with more than 10% ethanol
concentration (E10). This can
cause damage to the product.
CAUTION: Do not use gasoline
with an octane number less than
90 RON (87 AKI). This can cause
damage to the product.
Note: Use gasoline with a higher octane
number if you frequently use the product at
continuously high engine speed.
3. Add the full quantity of the two-cycle engine
oil to the fuel container.
CAUTION: Always use air-
cooled two-cycled engine oil of
high quality. Other oils can cause
damage to the product.
4. Shake the fuel mixture to mix the contents.
5. Add the remaining gasoline quantity to the
fuel container.
6. Shake the fuel mixture to mix the contents.
7. Fill the fuel tank of the product with the fuel
mixture. See
To use fuel on page 15 .
To fill the fuel tank
1. Make sure that the fuel mixture is correct
and that the fuel mixture is in a fuel
container with an antispill valve.
2. If fuel is on the container, remove the
unwanted fuel and let the container dry.
3. Make sure that the area near the fuel tank
cap is clean.
4. Remove the fuel tank cap.
5. Shake the fuel container before you add
the fuel mixture to the fuel tank.
6. Put back the fuel tank cap.
To lubricate the saw chain
The product has an automatic lubrication
system. The saw chain oil tank and the fuel
tank are designed so that the fuel runs out
before the saw chain oil. This safety feature
requires that the correct chain oil is used and
that the instructions are obeyed.
1. Use vegetable-based saw chain oil or a
standard chain oil.
2. Make sure that the area near the cap of the
saw chain oil tank is clean.
3. Remove the cap of the saw chain oil tank.
4. Fill the saw chain oil tank with the
recommended saw chain oil.
5. Put back the cap of the saw chain oil tank.
To start and stop
Before you start the engine
• Examine the product for missing, damaged,
loose or worn parts.
• Examine the nuts, screws and bolts.
• Examine the air filter.
• Examine the trigger lockout and the trigger
for correct operation.
• Examine the stop switch for correct
operation.
• Examine the product for fuel leaks.
• Examine the saw chain sharpness and
tension.
16 653 - 006 - 10.02.2020

To start a cold engine
1. Move the front hand guard forward to
engage the chain brake.
2. Pull the choke control out fully.
3. Push the air purge bulb 6 times.
4. Hold the body of the product on the ground
with your left hand.
5. Put your right foot through the rear handle.
6. Pull the starter rope handle slowly with your
right hand until you feel some resistance.
7. Pull the starter rope handle with force.
CAUTION: Do not pull the
starter rope until it stops. Do not
let go of the starter rope when it
is fully extended. Release the
starter rope slowly. If you do not
obey these instructions, it can
cause damage to the engine.
Note: Do not pull the throttle trigger when
you start the engine.
653 - 006 - 10.02.2020 17

8. Continue to pull the starter rope handle
until the engine starts or tries to start (pull
max 5 times).
9. If the engine starts or tries to start, push the
choke control in to the half choke position.
10.Continue to pull until the engine starts.
11.Hold the rear handle with your right hand
and the front handle with your left hand.
12.Immediately pull the front hand guard
rearward in the direction of the front handle
to disengage the chain brake.
Note: The chain will move.
13.Run 20-30 seconds at elevated idle speed.
14.Pull the throttle trigger slowly but fully for
8-10 seconds, then release.
15.Run 10 seconds at normal idle speed.
16.Pull the throttle trigger slowly but fully for 5
seconds to check acceleration, then
release.
17.Use the product.
To start a warm engine
1. Move the front hand guard forward to
engage the chain brake.
2. Pull the choke control out fully.
3. Push the air purge bulb 6 times.
4. Push the choke control in fully.
5. Hold the body of the product on the ground
with your left hand.
6. Put your right foot through the rear handle.
7. Pull the starter rope handle slowly with your
right hand until you feel some resistance.
8. Pull the starter rope handle with force.
CAUTION: Do not pull the
starter rope until it stops. Do not
let go of the starter rope when it
is fully extended. Release the
starter rope slowly. If you do not
obey these instructions, it can
cause damage to the engine.
Note: Do not pull the throttle trigger when
you start the engine.
9. Pull the starter rope handle until the engine
starts.
10.Hold the rear handle with your right hand
and the front handle with your left hand.
18 653 - 006 - 10.02.2020

11.Immediately pull the front hand guard
rearward in the direction of the front handle
to disengage the chain brake.
Note: The chain will move.
12.Wait 10-15 seconds.
13.Pull the throttle trigger lightly to set normal
idle.
14.Use the product.
To start the engine when the fuel is too hot
If the product does not start, the fuel can be
too hot.
Note: Always use new fuel and decrease the
operation time during warm weather.
1. Put the product in a cool area away from
open sunlight.
2. Let the product cool down for 20 minutes at
minimum.
3. Press the air purge bulb again and again
for 10-15 seconds.
4. Obey the procedure to start a cold engine.
Refer to
To start a cold engine on page 17 .
To stop the engine
• Push the stop switch to stop the engine.
Note: The stop switch automatically goes
back to its initial position.
To fell a tree
1. Remove dirt, stones, loose bark, nails,
staples and wire from the tree.
2. Make a notch 1/3 the diameter of the tree,
perpendicular to the direction of the fall.
3. Make the lower horizontal notch cut. This
will prevent either the saw chain or the
guide bar from being pinched when the
second notch is made.
653 - 006 - 10.02.2020 19

4. Make the felling back cut (X) at least 50
mm (2 in) higher than the horizontal
notching cut. Keep the felling back cut
parallel to the horizontal notching cut so
enough wood is left to act as a hinge. Do
not cut through the hinge. The hinge wood
keeps the tree from twisting and falling in
the wrong direction.
X
Y
5. As the felling back cut nears the hinge, the
tree starts to fall. Make sure that the tree
can fall in the correct direction and not rock
rearward and pinch the saw chain. Stop the
cut before the felling back cut is complete
to prevent this. Use wedges of wood,
plastic or aluminium to open the cut and let
the tree fall along the necessary line of fall.
6. When the tree begins to fall, remove the
product from the cut, stop the engine, put
the product down, then use the retreat path
planned. Be alert for overhead limbs falling
and watch your footing.
To limb a tree
1. Use larger limbs to hold the log off the
ground.
20 653 - 006 - 10.02.2020