Fuel Handling; Fuel - Jonsered CS2156 Operator's Manual

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.
WARNING! Always ensure there is adequate
!
ventilation when handling fuel.
Petrol
• Use good quality unleaded or leaded petrol.
• 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
JONSERED 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 JONSERED two-stroke oil, which is specially
adapted for our two-stroke engines.
• JONSERED 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.
26 –
English

FUEL HANDLING

Mixing ratio
For engines up to 80 cc: 01:50 (2%)
For engines over 80 cc: 01:33 (3%)
Petrol, litre
5
10
15
20
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.
The following applies to chain saws with
catalytic converters:
Always use high grade unleaded petrol (minimum 95 RON)!
Leaded petrol will destroy the catalytic converter and it will no
longer serve its purpose. The green fuel cap on chain saws
with catalytic converters means that only unleaded petrol can
be used.
!
Two-stroke oil, litre
2% (1:50)
0,10
0,20
0,30
0,40
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!
3% (1:33)
0,15
0,30
0,45
0,60