Fuel Handling, Petrol, Two-stroke oil, Mixing

FUEL HANDLING

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. Engines equipped with catalytic converters must be run on unleaded fuel mixtures.

•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.

Mixing ratio

For engines up to 80 cc: 01:50 (2%)

For engines over 80 cc: 01:33 (3%)

Petrol, litre	Two-stroke oil, litre

	2% (1:50)	3% (1:33)
	2% (1:50)	3% (1:33)

5	0,10	0,15

10	0,20	0,30

15	0,30	0,45

20	0,40	0,60

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.

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