Fuel Handling; Fuel - Jonsered CS 2186 Operator's Manual

Fuel

Note! 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. Engines
equipped with catalytic converters must be run on
unleaded fuel mixtures.
• 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
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
• For the best results and performance use JONSERED
two-stroke oil, which is specially formulated 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.

FUEL HANDLING

Mixing ratio
1:50 (2%) with JONSERED two-stroke oil.
1:33 (3%) with oils class JASO FB or ISO EGB formulated for
air-cooled, two-stroke engines.
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.
Chain oil
• The chain lubrication system is automatic and 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.
Two-stroke oil, litre
2% (1:50) 3% (1:33)
0,10 0,15
0,20 0,30
0,30 0,45
0,40 0,60
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