Husqvarna 365 - Manual (Page 24)

24 – English
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. Engines
equipped with catalytic converters must be run on
unleaded fuel mixtures.
• The lowest recommended octane grade is RON 90. If you
run the engine on a lower octane grade than RON 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 environment 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
• Always use HUSQVARNA two-stroke oil, which is
specially adapted for our two-stroke engines.
• HUSQVARNA provides two stroke oils adapted for
different application areas and climates. Please contact
your dealer for information about the best options for your
product and area of application.
• Never use two-stroke oil intended for water-cooled
outboard engines, sometimes referred to as outboard oil.
• Never use oil intended for four-stroke engines.
Mixing ratio
For engines up to 80 cc: 01:50 (2%)
For engines over 80 cc: 01:33 (3%)
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
• The chain lubrication system is automatic and we
recommend the use of special oil (chain oil) with good
adhesion characteristics.
• In countries where no special chain oil is available, EP90
transmission oil can be used.
• 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