Fuel Handling, Fuelling | Jonsered RS44/52 instruction

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.

WARNING! Always ensure there is adequate

!ventilation when handling fuel.

Gasoline

CAUTION! Always use high grade unleaded oil mixed gasoline (minimum 87 RON). If your machine is equipped with a catalytic converter (see chapter on Technical data) always use a good quality unleaded petrol/oil mixture. Leaded petrol will destroy the catalytic converter and it will no longer serve its purpose.

Use low-emission gasoline, also known as alkylate gasoline, if it is available.

•This engine is certiﬁed to operate on unleaded gasoline.

•The lowest recommended octane rating is 87. If you run the engine on lower octane rating than 87 so-called “knocking“ can occur. This leads to an increased engine temperature, which can result in a serious engine breakdown.

•When working at continuous high revs a higher octane rating is recommended.

Two-stroke oil

•For the best results and performance use JONSERED two-stroke oil, which is specially formulated for our two- stroke engines. Mixture 1:50 (2%).

•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.

Gasoline, litre	Two-stroke oil, litre

	2% (1:50)

5	0,10

10	0,20

15	0,30

20	0,40

US gallon	US ﬂ. oz.

1	2 1/2

2 1/2	6 1/2

5	12 7/8

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.

•This engine is certiﬁed to operate on unleaded gasoline.

WARNING! The catalytic converter mufﬂer

!gets very hot during and after use. This also applies during idling. Be aware of the ﬁre hazard, especially when working near ﬂammable substances and/or vapours.

Fuelling

WARNING! Taking the following precautions,

!will lessen the risk of ﬁre:

Do not smoke or place hot objects near fuel.

Always shut off the engine before refuelling. Always stop the engine and let it cool for a few minutes before refuelling.

When refuelling, open the fuel cap slowly so that any excess pressure is released gently. Tighten the fuel cap carefully after refuelling. Always move the machine away from the refuelling area before starting.

•Clean the area around the fuel cap. Contamination in the tank can cause operating problems.

•Ensure that the fuel is well mixed by shaking the container before ﬁlling the tank.

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