Jonsered CS 2147 manual Fuel Handling, Following applies to chain saws with catalytic converters

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.

•The lowest octane recommended is 90. If you run the engine on a lower octane than 90 it can result in knocking. This gives rise to a high engine temperature, which can result in serious engine damage.

•When working with continuous high revs (e.g. limbing) a higher octane 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%).

•If JONSERED two-stroke oil is not available, you may use another two-stroke oil of good quality that is intended for air cooled engines. Contact your dealer when selecting an oil. Mixing ratio 1:33 (3%)-1:25 (4%).

•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.

Petrol, litre	Two-stroke oil, litre
	2% (1:50)	3% (1:33)	4% (1:25)
5	0,10	0,15	0,20
10	0,20	0,30	0,40
15	0,30	0,45	0,60
20	0,40	0,60	0,80

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:

Petrol

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

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

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.

For additional information about fuels, see above.

26 – English