Product Manual
Table Of Contents
- Symbols on the machine:
- Symbols in the operator’s manual:
- Contents
- Dear Customer,
- Before using a new chain saw
- Important
- Always use common sense
- Personal protective equipment
- Machine¢s safety equipment
- Chain brake and front hand guard
- Will my hand always activate the chain brake during a kickback?
- Will my inetria activated chain brake always activate during kickback in the event of a kickback?
- Will my chain brake always protect me from injury in the event of a kickback?
- Throttle lockout
- Chain catcher
- Right hand guard
- Vibration damping system
- Stop switch
- Muffler
- Cutting equipment
- Fitting the bar and chain
- Fuel
- Starting and stopping
- Before use:
- General working instructions
- How to avoid kickback
- General
- Carburettor adjustment
- Carburettor with movement limiters
- Carburettor without movement limiters
- Checking, maintaining and servicing chain saw safety equipment
- Muffler
- Starter
- Air filter
- Spark plug
- Lubricating the bar tip sprocket
- Needle bearing lubrication
- Adjustment of the oil pump
- Cooling system
- ”Air Injection” centrifugal cleaning
- Winter use
- Heated handles
- Maintenance schedule
- Technical data
- Bar and chain combinations
- Saw chain filing and file gauges
- EC-declaration of conformity
English – 17
FUEL HANDLING
Fuel
CAUTION! The machine is equipped with a two-stroke engine
and must always been run using a mixture of petrol 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.
Petrol
• Use good quality unleaded or leaded petrol.
• CAUTION! Engines equipped with catalytic
converters must be run on unleaded fuel mixtures.
Leaded gasoline will destroy the catalytic converter and it
will no longer serve its purpose. The green fuel cap on
saws fitted with catalytic converters means that only
unleaded gasoline can be used.
• The lowest recommended octane grade is 90 (RON). If
you run the engine on a lower octane grade than 90 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 with continuous high revs (e.g. limbing) a
higher octane is recommended.
Environment fuel
HUSQVARNA recommends the use of alkylate fuel, either
Aspen two-stroke fuel or environmental fuel for four-stroke
engines blended with two-stroke oil as set out below. Note
that carburettor adjustment may be necessary when
changing the type of fuel (see the instructions under the
heading Carburettor).
Running-in
Avoid running at a too high speed during the first 10 hours.
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.
• A poor oil quality and/or too high oil/fuel ratio may
jeopardise function and decrease the life time of catalytic
converters.
Mixing ratio
1:50 (2%) with HUSQVARNA two-stroke oil.
1:33 (3%) with oils class JASO FB or ISO EGB formulated for
air-cooled, two-stroke engines.
Mixing
• Always mix the petrol and oil in a clean container intended
for fuel.
• Always start by filling half the amount of the petrol to be
used. Then add the entire amount of oil. Mix (shake) the
fuel mixture. Add the remaining amount of petrol.
• 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.
Chain oil
• We recommend the use of special oil (chain oil) with good
adhesion characteristics.
• Never use waste oil. This results in damage to the oil
pump, the bar and the chain.
• It is important to use oil of the right grade (suitable
viscosity range) to suit the air temperature.
• In temperatures below 0°C (32°F) some oils become too
viscous. This can overload the oil pump and result in
damage to the oil pump components.
• Contact your service agent when choosing chain oil.
!
WARNING! Always ensure there is adequate
ventilation when handling fuel.
Petrol, litre Two-stroke oil, litre
2% (1:50) 3% (1:33)
5 0,10 0,15
10 0,20 0,30
15 0,30 0,45
20 0,40 0,60