Fuel Handling; Petrol; Twostroke Oil; Mixing - Husqvarna 250PS Operator's Manual

Fuel mix
NOTE!
The pruning saw is fitted with a two-stroke engine and must
always be run on a mixture of petrol and two-stroke oil. To
ensure the correct mixture proportions it is important to
measure the quantity of oil accurately. When mixing small
amounts of fuel small discrepancies in the amount of oil have
a big effect on the proportions of the fuel mixture.
!
WARNING!
Always provide good ventilation when
handling fuel.

Petrol

• Use unleaded or leaded
high octane petrol mixed
with oil.
• The lowest octane
recommended is 90. 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,
which can result in serious
engine damage.
• For work with
continuously high revs a
higher octane rating is
recommended.

Twostroke oil

• For the best results use
Husqvarna twostroke oil.
Mixing ratio 1:50 (2%).
• If Husqvarna twostroke
oil is not available, you
may use another two-
stroke oil of good quality
that is intended for air
cooled engines. Contact
your dealer when selecting
an oil. Mixing ratio 1:33
(3%).
• Never use twostroke oil
intended for water cooled
outboard engines, so-
called outboard oil.
• Never use oil intended for
four-stroke engines.

FUEL HANDLING

Mixing

• Always mix the petrol and oil in a clean container intended
for fuel.
• Always start by filling half the amount of 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
fuel tank.
• Do not mix more than max. one month's supply of fuel.
• If the pruner is not used for some time the fuel tank should
be emptied and cleaned.

Fuelling

!
Gasolin Oil • Öl
Benzin
Huile • Aceite
Essence
Lit.
Gasolina
2% (1:50)
Lit.
0,10
5
0,20
10
15 0,30
20 0,40
US
US
gallon
fl. oz.
2% (1:50)
1 2 1/2
2 1/2 6 1/2
5 12 7/8
WARNING!
The following precautions reduce the risk
of fire:
Do not smoke or place any sources of heat
in the vicinity of the fuel. Never refuel when
the engine is running. Always stop the
engine and let it cool for a few minutes
before refuelling. Open the fuel cap slowly
when fuelling so that any over pressure is
released slowly. Tighten the fuel cap
carefully after refuelling. Always move the
machine from the fuelling place before
starting.
3% (1:33)
0,15
0,30
0,45
0,60
3% (1:33)
3 3/4
9 3/4
19 1/4
17
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