Husqvarna 390XPG Manual Do Utilizador
FUEL HANDLING
18 – English
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.
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
•
Use good quality unleaded gasoline.
•
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.
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.
•
This engine is certified to operate on unleaded
gasoline.
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.
((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 with continuous high revs (e.g. limbing)
a higher octane is recommended.
a higher octane is recommended.
Environment fuel
HUSQVARNA recommends the use of alkylate fuel or
environmental fuel for four-stroke engines blended with
two-stroke oil as set out below. Note that carburetor
adjustment may be necessary when changing the type of
fuel (see instructions under the heading Carburetor).
environmental fuel for four-stroke engines blended with
two-stroke oil as set out below. Note that carburetor
adjustment may be necessary when changing the type of
fuel (see instructions under the heading Carburetor).
Running-in
Avoid running at a too high speed for extended periods
during the first 10 hours.
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.
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).
engines, sometimes referred to as outboard oil (rated
TCW).
•
Never use oil intended for four-stroke engines.
•
Mixing ratio
1:50 (2%) for all engines.
Mixing
•
Always mix the gasoline and oil in a clean container
intended for fuel.
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.
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.
the machine’s fuel tank.
•
Do not mix more than one month’s supply of fuel at a
time.
time.
•
If the machine is not used for some time the fuel tank
should be emptied and cleaned.
should be emptied and cleaned.
Chain oil
•
We recommend the use of special oil (chain oil) with
good adhesion characteristics.
good adhesion characteristics.
•
Never use waste oil. This results in damage to the oil
pump, the bar and the chain.
pump, the bar and the chain.
•
It is important to use oil of the right grade (suitable
viscosity range) to suit the air temperature.
viscosity range) to suit the air temperature.
!
WARNING! Always ensure there is
adequate ventilation when handling fuel.
adequate ventilation when handling fuel.
Gasoline, litre
Two-stroke oil, litre
2% (1:50)
5
0,10
10
0,43/0,20
15
0,30
20
0,40
US gallon
US fl. oz.
2% (1:50)
1
2 1/2
2 1/2
6 1/2
5
12 7/8