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26 – English
FUEL HANDLING
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.
Gasoline
• Use good quality unleaded gasoline. Engines equipped
with catalytic converters must be run on unleaded fuel
mixtures.
• This engine is certified to operate on unleaded
gasoline.
• 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 or
environment 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 the
instructions under the heading Carburetor).
Running-in
Avoid running at a too high speed for extended periods 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.
Mixing ratio
For all engines: 1:50 (2%)
Mixing
• Always mix the gasoline and oil in a clean container
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.
• 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.
!
WARNING! Always ensure there is 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 0,80/0,40
US gallon
US fl. oz.
2% (1:50)
1 2 1/2
2 1/2 6 1/2
5 12 7/8