Husqvarna 159LEB User manual

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EEnn nngg ggll llii iiss sshh hh
159LEB
Operator’s manual (EPA)
Please read the operator’s manual carefully and make sure you understand the instructions
before using the machine.

KEY TO SYMBOLS
2 – English
Symbols
WARNING! An ice drill is a
dangerous tool if used carelessly or
incorrectly and can cause serious,
even fatal injuries. It is extremely
important that you read and
understand the contents of this
Operator’s Manual.
Please read the operator’s manual
carefully and make sure you
understand the instructions before
using the machine.
Always wear:
• Approved hearing protection
• Approved eye protection
Always wear approved protective
gloves.
Wear sturdy, non-slip boots or shoes.
Other symbols/decals on the machine refer to special
certification requirements for certain markets.
The engine is switched off by moving
the stop switch to the stop position.
CAUTION! The stop switch
automatically returns to the start
position. In order to prevent
unintentional starting, the spark plug
cap must be removed from the spark plug when
assembling, checking and/or performing maintenance.
Always wear approved protective
gloves.
Regular cleaning is required.
Visual check.

CONTENTS
English
–
3
Contents Note the following before
starting:
Please read the operator’s manual carefully.
The Emissions Compliance Period referred to on the
Emission Compliance label indicates the number of
operating hours for which the engine has been shown to
meet Federal emissions requirements.
KEY TO SYMBOLS
Symbols ................................................................ 2
CONTENTS
Contents ............................................................... 3
Note the following before starting: ........................ 3
WHAT IS WHAT?
What is what? ....................................................... 4
GENERAL SAFETY PRECAUTIONS
Important .............................................................. 5
Remember when going out onto the ice: .............. 5
Personal protective equipment ............................. 5
Machine ′ s safety equipment ................................. 6
ASSEMBLY
Fitting the auger ................................................... 9
FUEL HANDLING
Fuel safety ............................................................ 10
Fuel ...................................................................... 10
Fueling .................................................................. 11
STARTING AND STOPPING
Check before starting ........................................... 12
Starting and stopping ........................................... 12
WORKING TECHNIQUES
General working instructions ................................ 14
MAINTENANCE
Carburetor ............................................................ 16
Muffler .................................................................. 17
Cooling system ..................................................... 18
Spark plug ............................................................ 18
Air filter ................................................................. 18
Maintenance schedule ......................................... 19
TECHNICAL DATA
Technical data ...................................................... 20
FEDERAL AND CALIFORNIA EMISSIONS
CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS 21
!
WARNING! Long-term exposure to noise
can result in permanent hearing
impairment. So always use approved
hearing protection.
!
WARNING! Under no circumstances may
the design of the machine be modified
without the permission of the
manufacturer. Always use genuine
accessories. Non-authorized
modifications and/or accessories can
result in serious personal injury or the
death of the operator or others.
Your warranty may not cover damage or
liability caused by the use of non-
authorized accessories or replacement
parts.
!
WARNING! An ice drill is a dangerous
tool if used carelessly or incorrectly and
can cause serious, even fatal injuries. It
is extremely important that you read and
understand the contents of this
Operator’s Manual.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.

4 – English
WHAT IS WHAT?
What is what?
8
7
6
10
9
12
19
13
14
15
11
16
17
18
5
4
12
3
1 Cylinder cover
2 Air filter cover
3 Handle adjustment
4 Air purge
5 Choke control
6 Stop switch
7 Throttle control
8 Throttle lock
9 Spark plug cap and spark plug
10 Starter handle
11 Fuel tank
12 Gear housing
13 Drill
14 Cutters
15 Cutting equipment
16 Allen key
17 Combination spanner
18 Operator’s manual
19 Transport guard

GENERAL SAFETY PRECAUTIONS
English
–
5
Important Remember when going out onto
the ice:
• Never go out onto the ice alone.
• Always carry ice prods and other safety equipment on
the ice.
• Never go out onto ice if you are unsure of its strength.
Always test the ice with an ice-pike if you are
uncertain.
• Be aware that many factors affect the strength of the
ice, not just the thickness of the ice. For example, new
ice, spring ice, snow covered ice and sea ice can be
weak. Straits, points, open channels, shallows, etc.
are areas that can be weak even though the ice is
thick.
• Always inform someone of your whereabouts and
when you will be returning.
Personal protective equipment
HEARING PROTECTION
Wear hearing protection that provides adequate noise
reduction.
EYE PROTECTION
Protective goggles or a visor must be worn.
IMPORTANT!
The machine is solely designed for drilling in ice.
Never use a machine that has been modified in any way
from its original specification.
Never use the machine if you are tired, if you have drunk
alcohol, or if you are taking medication that could affect
your vision, your judgement or your co-ordination.
Wear personal protective equipment. See instructions
under the heading Personal protective equipment.
Never use a machine that is faulty. Carry out the checks,
maintenance and service instructions described in this
manual. Some maintenance and service measures
must be carried out by trained and qualified specialists.
See instructions under the heading Maintenance.
All covers and guards must be fitted before starting.
Ensure that the spark plug cap and ignition lead are
undamaged to avoid the risk of electric shock.
!
WARNING! The ignition system of this
machine produces an electromagnetic
field during operation. This field may
under some circumstances interfere with
pacemakers. To reduce the risk of
serious or fatal injury, we recommend
persons with pacemakers to consult
their physician and the pacemaker
manufacturer before operating this
machine.
!
WARNING! Running an engine in a
confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
!
WARNING! Never allow children to use or
be in the vicinity of the machine. As the
machine is equipped with a spring-
loaded stop switch and can be started by
low speed and force on the starter
handle, even small children under some
circumstances can produce the force
necessary to start the machine. This can
mean a risk of serious personal injury.
Therefore remove the spark plug cap
when the machine is not under close
supervision.
IMPORTANT!
An ice drill is a dangerous tool if used carelessly or
incorrectly and can cause serious, even fatal injuries. It
is extremely important that you read and understand the
contents of this Operator’s Manual.
You must use approved personal protective equipment
whenever you use the machine. Personal protective
equipment cannot eliminate the risk of injury but it will
reduce the degree of injury if an accident does happen.
Ask your dealer for help in choosing the right equipment.
!
WARNING! Listen out for warning signals
or shouts when you are wearing hearing
protection. Always remove your hearing
protection as soon as the engine stops.

GENERAL SAFETY PRECAUTIONS
6 – English
GLOVES
Gloves should be worn when necessary, e.g., when fitting
cutting attachments.
BOOTS
Wear sturdy, non-slip boots or shoes.
CLOTHING
Never wear loose-fitting clothes, scarves, jewellery or
similar items that could get caught in the auger. Make
sure your hair does not hang below shoulder level.
FIRST AID KIT
Always have a first aid kit nearby.
EQUIPMENT FOR GOING OUT ONTO ICE
Equipment that is always good to carry when going out
onto ice: Ice prods around your neck (to be able to climb
out if the ice should break), heaving line (to be able to help
others should they fall through the ice), a change of
clothes (in waterproof packing), ice-pike (to check the
thickness of the ice).
Machine ′ s safety equipment
This section describes the machine ′ s safety equipment,
its purpose, and how checks and maintenance should be
carried out to ensure that it operates correctly. See the
”What is what?” section to locate where this equipment is
positioned on your machine.
The life span of the machine can be reduced and the risk
of accidents can increase if machine maintenance is not
carried out correctly and if service and/or repairs are not
carried out professionally. If you need further information
please contact your nearest servicing dealer.
Throttle lockout
The throttle lockout is designed to prevent accidental
operation of the throttle control. When you press the lock
(A) (i.e. when you grasp the handle) it releases the throttle
control (B). When you release the handle the throttle
control and the throttle lockout both move back to their
original positions. This movement is controlled by two
independent return springs.This arrangement means that
the throttle control is automatically locked at the idle
setting.
Make sure the throttle control is locked at the idle setting
when the throttle lockout is released.
IMPORTANT!
All servicing and repair work on the machine requires
special training. This is especially true of the machine ′ s
safety equipment. If your machine fails any of the
checks described below you must contact your service
agent. When you buy any of our products we guarantee
the availability of professional repairs and service. If the
retailer who sells your machine is not a servicing dealer,
ask him for the address of your nearest service agent.
!
WARNING! Never use a machine with
faulty safety equipment. The machine’s
safety equipment must be checked and
maintained as described in this section.
If your machine fails any of these checks
contact your service agent to get it
repaired.
A
B

GENERAL SAFETY PRECAUTIONS
English
–
7
Press the throttle lockout and make sure it returns to its
original position when you release it.
Check that the throttle control and throttle lockout move
freely and that the return springs work properly.
See instructions under the heading Start. Start the
machine and apply full throttle. Release the throttle and
check that the cutting attachment stops and remains at a
standstill. If the cutting attachment rotates with the throttle
in the idle position then the carburettor idle setting must
be checked. See instructions under the heading
Maintenance.
Stop switch
Use the stop switch to switch off the engine.
Start the engine and make sure the engine stops when
you move the stop switch to the stop setting.
Muffler
The muffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user. A muffler
fitted with a catalytic converter is also designed to reduce
harmful exhaust gases.
In countries that have a warm and dry climate there is a
significant risk of fire.We therefore fit certain mufflers with
a spark arrestor screen. Check whether the muffler on
your machine is fitted with this kind of screen.
For mufflers it is very important that you follow the
instructions on checking, maintaining and servicing your
machine.
Never use a machine that has a faulty muffler.
Regularly check that the muffler is securely attached to
the machine.
If the muffler on your machine is fitted with a spark
arrestor screen this must be cleaned regularly. A blocked

GENERAL SAFETY PRECAUTIONS
8 – English
screen will cause the engine to overheat and may lead to
serious damage.
Cutters
Ensure that the cutters are securely attached.
When the blade is manufactured it is sharpened using an
advanced method. This means that the blade cannot be
re-sharpened using conventional methods. Worn blades
must be replaced with new ones to ensure your machine
works satisfactorily.
Transport guard
The transport guard (A) is intended to protect against any
part of the body coming into contact with the cutting
edges (B).
Regularly check that the transport guard is not damaged.
Replace the transport guard if it is damaged.
!
WARNING! Mufflers fitted with catalytic
converters get very hot during use and
remain so for some time after stopping.
This also applies at idle speed. Contact
can result in burns to the skin.
Remember the risk of fire!
!
WARNING! The inside of the muffler
contain chemicals that may be
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
!
WARNING! Bear in mind that: The
exhaust fumes from the engine are hot
and may contain sparks which can start
a fire. Never start the machine indoors or
near combustible material!
A
B

ASSEMBLY
English
–
9
Fitting the auger
1 Fit the auger (A) to the output shaft (B).
2 Fit the screws (C) and tighten using the Allen key
provided.
A
B
C

FUEL HANDLING
10 – English
Fuel safety
Never start the machine:
1 If you have spilled fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
2 If you have spilled fuel on yourself or your clothes,
change your clothes. Wash any part of your body that
has come in contact with fuel. Use soap and water.
3 If the machine is leaking fuel. Check regularly for
leaks from the fuel cap and fuel lines.
Transport and storage
• Store and transport the machine and fuel so that there
is no risk of any leakage or fumes coming into contact
with sparks or naked flames, for example, from
electrical machinery, electric motors, electrical relays/
switches or boilers.
• When storing and transporting fuel always use
approved containers intended for this purpose.
• When storing the machine for long periods the fuel
tank must be emptied. Contact your local gas station
to find out where to dispose of excess fuel.
• Ensure the machine is cleaned and that a complete
service is carried out before long-term storage.
• The transport guard must always be fitted to the
cutting attachment when the machine is being
transported or in storage.
• In order to prevent unintentional starting of the engine,
the spark plug cap must always be removed during
long-term storage, if the machine is not under close
supervision and when performing all service
measures.
Fuel
CAUTION! The machine is equipped with a two-stroke
engine and must always been run using a mixture of
gasoline and two-stroke engine oil. It is important to
accurately measure the amount of oil to be mixed to
ensure that the correct mixture is obtained. When mixing
small amounts of fuel, even small inaccuracies can
drastically affect the ratio of the mixture.
Gasoline
CAUTION! Always use a quality gasoline/oil mixture with
an octane rating of at least 87 octane ((RON+MON)/2). If
your machine is equipped with a catalytic converter (see
chapter on Technical data) always use a good quality
unleaded gasoline/oil mixture. Leaded gasoline will
destroy the catalytic converter.
Use low-emission gasoline, also known as alkylate
gasoline, if it is available.
This engine is certified to operate on unleaded
gasoline.
• The lowest recommended octane grade is 87
((RON+MON)/2). If you run the engine on a lower
octane grade than 87 so-called knocking can occur.
This gives rise to a high engine temperature and
increased bearing load, which can result in serious
engine damage.
• When working at continuous high revs a higher octane
rating is recommended.
Two-stroke oil
• For best results and performance use HUSQVARNA
two-stroke engine oil, which is specially formulated for
our air-cooled two stroke-engines.
• Never use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
• Never use oil intended for four-stroke engines.
• Mixing ratio
1:50 (2%) with HUSQVARNA two-stroke oil.
!
WARNING! Take care when handling fuel.
Bear in mind the risk of fire, explosion
and inhaling fumes.
!
WARNING! Fuel and fuel fumes are
highly inflammable and can cause
serious injury when inhaled or allowed to
come in contact with the skin. For this
reason observe caution when handling
fuel and make sure there is adequate
ventilation.
Gasoline, litre Two-stroke oil, litre
2% (1:50)
5 0,10
10 0,20
15 0,30
20 0,40
US gallon US fl. oz.
1 2 1/2
2 1/2 6 1/2
5 12 7/8

FUEL HANDLING
English
–
11
Mixing
• Always mix the gasoline and oil in a clean container
intended for fuel.
• Always start by filling half the amount of the gasoline
to be used. Then add the entire amount of oil. Mix
(shake) the fuel mixture. Add the remaining amount of
gasoline.
• Mix (shake) the fuel mixture thoroughly before filling
the machine’s fuel tank.
• Do not mix more than one month’s supply of fuel at a
time.
• If the machine is not used for some time the fuel tank
should be emptied and cleaned.
Fueling
• Clean the area around the fuel cap. Contamination in
the tank can cause operating problems.
• Ensure that the fuel is well mixed by shaking the
container before filling the tank.
!
WARNING! The catalytic converter
muffler gets very hot during and after
use. This also applies during idling. Be
aware of the fire hazard, especially when
working near flammable substances and/
or vapours.
!
WARNING! Taking the following
precautions, will lessen the risk of fire:
Do not smoke or place hot objects near
fuel.
Always shut off the engine before
refuelling.
Always stop the engine and let it cool for
a few minutes before refuelling.
When refuelling, open the fuel cap slowly
so that any excess pressure is released
gently.
Tighten the fuel cap carefully after
refuelling.
Always move the machine away from the
refuelling area before starting.

STARTING AND STOPPING
12 – English
Check before starting
• Check the cutters. Never use cutters that are blunt,
cracked or damaged.
• Check that the machine is in perfect working order.
Check that all nuts and screws are tight.
• Check that the cutting attachment always stops when
the engine is idling.
• Only use the machine for the purpose it was intended
for.
• Make sure that the handle and safety features are in
good working order. Never use a machine that lacks a
part or has been modified outside its specifications.
• All covers must be correctly fitted and undamaged
before you start the machine.
Starting and stopping
Cold engine
Primer bulb: Press the air purge repeatedly until fuel
begins to fill the bulb. The bulb need not be completely
filled.
Choke: Set the choke control in the choke position.
Warm engine
Primer bulb: Press the air purge repeatedly until fuel
begins to fill the bulb. The bulb need not be completely
filled.
!
WARNING! Always move the machine
about 3 metres from the refuelling
position before starting. Place the
machine on a flat surface. Ensure the
cutting attachment cannot come into
contact with any object. Make sure no
unauthorised persons are in the working
area, otherwise there is a risk of serious
personal injury.

STARTING AND STOPPING
English
–
13
Starting
Hold the machine upright with your left hand. Grip the
starter handle, slowly pull out the cord with your right hand
until you feel some resistance (the starter pawls grip),
now quickly and powerfully pull the cord.
Push the choke control back to its original position as
soon as the engine fires, and continue trying to start until
the engine starts.
CAUTION! Do not pull the starter cord all the way out and
do not let go of the starter handle when the cord is fully
extended. This can damage the machine.
Stopping
The engine is switched off by moving the stop switch to
the stop position.
CAUTION! The stop switch automatically returns to the
start position. In order to prevent unintentional starting,
the spark plug cap must be removed from the spark plug
when assembling, checking and/or performing
maintenance.

WORKING TECHNIQUES
14 – English
General working instructions
Safety instructions regarding the
surroundings
• Never allow children to use the machine.
• Ensure that no-one comes closer than 5 m while you
are working.
• Never allow anyone else to use the machine without
first ensuring that they have understood the contents
of the operator’s manual.
• To prevent damage to the blades, make sure you do
not use the auger in areas where the blades could
come into contact with gravel or stones, especially in
shallow water or underneath bridges, etc.
Safety instructions while working
• Always ensure you have a safe and stable working
position.
• Always hold the machine with both hands.
• Use your right hand to control the throttle setting.
• Make sure that your hands and feet do not come near
the cutting attachment when the engine is running.
• When the engine is switched off, keep your hands and
feet away from the cutting attachment until it has
stopped completely.
• If any foreign object is hit or if vibrations occur stop the
machine immediately. Disconnect the HT lead from
the spark plug. Check that the machine is not
damaged. Repair any damage.
IMPORTANT!
This section takes up the basic safety precautions for
working with an ice drill.
If you encounter a situation where you are uncertain
how to proceed you should ask an expert. Contact your
dealer or your service workshop.
Avoid all usage which you consider to be beyond your
capability.
!
WARNING! The machine can cause
serious personal injury. Read the safety
instructions carefully. Learn how to use
the machine.
!
WARNING! Cutting tool. Do not touch the
tool without first switching off the
engine.
!
WARNING! Overexposure to vibration
can lead to circulatory damage or nerve
damage in people who have impaired
circulation. Contact your doctor if you
experience symptoms of overexposure
to vibration. Such symptoms include
numbness, loss of feeling, tingling,
pricking, pain, loss of strength, changes
in skin colour or condition. These
symptoms normally appear in the
fingers, hands or wrists. The risk
increases at low temperatures.

WORKING TECHNIQUES
English – 15
Safety instructions after completing work
• The transport guard should always be fitted to the
cutting attachment when the machine is not in use.
• Make sure the cutting attachment has stopped before
cleaning, carrying out repairs or an inspection.
Disconnect the HT lead from the spark plug.
• Always wear heavy gloves when replacing the cutters.
The cutters are extremely sharp and can easily cause
cuts.
• Store the machine out of reach of children.
• Use only original spare parts for repairs.
Basic working techniques
• Always ensure you have a safe and stable working
position.
• Always hold the machine with both hands.
• Place the tip of the drill on the ice.
• Open the throttle gradually when the drill begins to
bite into the ice.
•Keep a firm grip on the handles and be ready to
take the weight when the drill tip goes through the
ice.
• When you have finished drilling for the time being, drill
a short distance into the ice so that the machine
stands up by itself. By leaving the machine like this
you reduce the risk of anyone accidentally coming into
contact with the cutters.
• Always turn off the engine when you have finished
drilling.

MAINTENANCE
16 – English
Carburetor
Your Normark product has been designed and
manufactured to specifications that reduce harmful
emissions. After the engine has used 8-10 tanks of fuel
the engine will be run-in. To ensure that it continues to run
at peak performance and to minimise harmful exhaust
emissions after the running-in period, ask your dealer/
service workshop (who will have a rev counter at their
disposal) to adjust your carburettor.
Function
• The carburetor governs the engine’s speed via the
throttle control. Air and fuel are mixed in the
carburetor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance
from the machine.
• The setting of the carburetor means that the engine is
adapted to local conditions, for example, the climate,
altitude, fuel and the type of 2-stroke oil.
• The carburettor is fitted with two adjustment
possibilities:
L = Low speed jet
T = Idle adjustment screw
• The fuel quantity in relation to the air flow permitted by
the throttle opening is adjusted by the L-needle.
Turning the needle clockwise gives a leaner fuel
mixture (less fuel) and turning it anticlockwise gives a
richer fuel mixture (more fuel). A lean mixture gives a
higher speed while a richer mixture gives a lower
speed.
• The T-screw regulates the throttle setting at idle
speed. If the T-screw is turned clockwise this gives a
higher idle speed; turning it anti-clockwise gives a
lower idle speed.
Basic setting
• The basic carburetor settings are adjusted during
testing at the factory. The basic setting is richer than
the optimal setting and should be maintained for the
first few hours the machine is in use. The carburettor
should then be finely adjusted. Fine adjustment
should be carried out by a skilled technician.
CAUTION! If the cutting attachment rotates when the
engine is idling the idle adjustment screw T should be
turned anti-clockwise until the cutting attachment stops.
Rec. idle speed: 2700 rpm
Recommended max. speed: See the Technical data
section.
Fine adjustment
• When the saw has been ”run-in” the carburettor
should be finely adjusted. The fine adjustment should
be carried out by qualified person. The L-needle is
adjusted first, then the idling screw T.
Conditions
• Before any adjustments are made, make sure that the
air filter is clean and the air filter cover is fitted. If you
adjust the carburettor when the air filter is dirty it will
result in a leaner mixture when the filter is finally
cleaned. This can lead to serious engine damage.
• Carefully turn the L-needle to the centre position
between the fully screwed in and fully screwed out
positions.
• Do not attempt to adjust the L-needle past the stop, as
this can result in damage.
• Now start the machine according to the starting
instructions and let it warm up for 10 minutes.
CAUTION! If the cutting attachment rotates when the
engine is idling the idle adjustment screw T should be
turned anti-clockwise until the cutting attachment stops.
Low speed jet L
Try to find the highest idling speed, turning the low speed
needle L clockwise respectively counter-clockwise. When
the highest speed has been found, turn the low speed
needle L 1/4 turn counter-clockwise.
CAUTION! If the blades move while the engine is idling
the T screw should be turned anti-clockwise until they
stop.
!
WARNING! The complete clutch cover
and gear housing must be fitted before
the machine is started, otherwise the
clutch may come loose and cause
personal injury.
L
T
!
WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your dealer/service
workshop. Do not use the machine until
it has been correctly adjusted or
repaired.

MAINTENANCE
English – 17
Fine adjustment of the idle speed T
Adjust the idle speed using the idle adjustment screw T, if
it is necessary to readjust. First turn the idle adjustment
screw T clockwise until the cutting attachment starts to
rotate. Then turn the screw anticlockwise until the cutting
attachment stops. The idle speed is correctly adjusted
when the engine will run smoothly in every position. The
idle speed should also be well below the speed at which
the cutting attachment starts to rotate. The blades must
also remain stationary when the choke control is in the
start throttle position.
Correctly adjusted carburetor
When the carburetor is correctly adjusted the machine
accelerates without hesitation and burbles a little at
maximum speed. It is also important that the blades do
not move when the engine is idling or when the choke
control is in the start position. If the low speed jet L is set
too lean it may cause starting difficulties and poor
acceleration. If the L-needle is set too rich it will result in
acceleration problems or too low a working speed.
Muffler
CAUTION! Some mufflers are fitted with a catalytic
converter. See chapter on Technical data to see whether
your machine is fitted with a catalytic converter.
The muffler is designed to reduce the noise level and to
direct the exhaust gases away from the operator. The
exhaust gases are hot and can contain sparks, which may
cause fire if directed against dry and combustible
material.
Some mufflers are equipped with a special spark arrestor
screen. If your machine has this type of muffler, you
should clean the screen at least once a week.This is best
done with a wire brush.
On mufflers without a catalytic converter the screen
should be cleaned weekly, or replaced if necessary. On
mufflers fitted with a catalytic converter the screen should
be checked, and if necessary cleaned, monthly. If the
screen is damaged it should be replaced. If the screen
is frequently blocked, this can be a sign that the
performance of the catalytic converter is impaired.
Contact your dealer to inspect the muffler. A blocked
screen will cause the machine to overheat and result in
damage to the cylinder and piston. See also instructions
under the heading Maintenance.
CAUTION! Never use a machine with a defective muffler.
!
WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your dealer/service
workshop. Do not use the machine until
it has been correctly adjusted or
repaired.
!
WARNING! Mufflers fitted with catalytic
converters get very hot during use and
remain so for some time after stopping.
This also applies at idle speed. Contact
can result in burns to the skin.
Remember the risk of fire!

MAINTENANCE
18 – English
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
1 Air intake on the starter.
2 Fins on the flywheel.
3 Cooling fins on the cylinder.
4 Cylinder cover (directs cold air over the cylinder).
Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
Spark plug
The spark plug condition is influenced by:
• Incorrect carburetor adjustment.
• An incorrect fuel mixture (too much or incorrect type
of oil).
• A dirty air filter.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
starting difficulties.
If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0.020 inch (0.5
mm). The spark plug should be replaced after about a
month in operation or earlier if necessary.
CAUTION! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the piston/
cylinder. Check that the spark plug is fitted with a
suppressor.
Air filter
The air filter must be regularly cleaned to remove dust
and dirt in order to avoid:
• Carburettor malfunctions
• Starting problems
• Loss of engine power
• Unnecessary wear to engine parts
• Excessive fuel consumption.
Clean the filter every 25 hours, or more regularly if
conditions are exceptionally dusty.
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water. Ensure that the filter is dry
before refitting it.
An air filter that has been in use for a long time cannot be
cleaned completely. The filter must therefore be replaced
with a new one at regular intervals. A damaged air filter
must always be replaced.
1
3
2
4

English – 19
MAINTENANCE
Maintenance schedule
The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the
Maintenance section. The user must only carry out the maintenance and service work described in this manual. More
extensive work must be carried out by an authorised service workshop.
Maintenance Daily
maintenance
Weekly
maintenance
Monthly
maintenance
Clean the outside of the machine. X
Make sure the throttle trigger lock and the throttle function
correctly from a safety point of view. X
Check that the stop switch works correctly. X
Check that the cutting attachment does not rotate at idle. X
Check that the transport guard is not damaged. Replace the
guard if it is damaged. X
Clean the air filter. Replace if necessary. X
Check that nuts and screws are tight. X
Check that there are no fuel leaks from the engine, tank or fuel
lines. X
Check the starter and starter cord. X
Clean the outside of the spark plug. Remove it and check the
electrode gap. Adjust the gap to 0.5 mm (.20”), or replace the
spark plug. Check that the spark plug is fitted with a suppressor.
X
Clean the machine’s cooling system. X
Clean or replace the spark arrestor screen on the muffler (only
applies to mufflers without a catalytic converter). X
Clean the outside of the carburettor and the space around it. X
Clean the fuel tank. X
Check the fuel filter from contamination and the fuel hose from
cracks or other defects. Replace if necessary. X
Check all cables and connections. X
Check the clutch, clutch springs and the clutch drum for wear.
Replace if necessary by an autorized service workshop. X
Replace the spark plug. Check that the spark plug is fitted with a
suppressor. X
Check and clean the spark arrestor screen on the muffler (only
applies to mufflers fitted with a catalytic converter). X

20 – English
TECHNICAL DATA
Technical data
Note 1: Equivalent sound pressure level is calculated as the time-weighted energy total for sound pressure levels under
various working conditions with the following time distribution: 1/2 idling and 1/2 max speed.
159LEB
Engine
Cylinder displacement, cu.in/cm31,48/24,3
Cylinder bore, inch/mm 1,34/34,0
Stroke, inch/mm 1,06/27
Idle speed, rpm 2700
Recommended max. speed, rpm 11000
Max. engine output, acc. to ISO 8893, kW/ rpm 0,9/8400
Catalytic converter muffler Yes
Speed-regulated ignition system No
Emissions Durability Period according to California Air Resources Board,
h. 300
Ignition system
Manufacturer/type of ignition system Walbro MB
Spark plug Champion RCJ 6Y
Electrode gap, inch/mm 1,06/0,5
Fuel and lubrication system
Manufacturer/type of carburetor Zama C1Q
Fuel tank capacity, US pint/litre 1,06/0,5
Weight
Weight, without fuel and cutting tool, Lbs/kg 12,8/5,8
Sound levels
(see note 1)
Equivalent sound pressure level at the operator’s ear, measured according
to EN ISO 22868, dB(A): 98
Equivalent noise power level, measured according to ISO 3744, dB(A) 102
Vibration levels
Vibration levels at handles, measured according to EN ISO 22867, m/s2
At idle, left/right handles: 5,7/7,4
At max. speed, left/right handles: 11,4/9,3