I put oil in the petrol!!!!!!!!!!!!!!!!

The most common cause is petrol leaking through the float chamber, into the barrel of the carbourettor and into the cylinder where it leaks through the gap in the piston rings.
To stop that, turn the fuel tap off when not in use.
Otherwise, heavy persistant misfire can have a similar effect.

Electric chain saws can use only bar and chain lubrication oil in their systems.

Most machine run 24:1 but go to jonsered main web site or local dealer.
Mix amount in a separate can / bottle before filling machine. Buy a purpose made mixing bottle to help get correct mix. Don't alter manf mix ratio.

As long as you didn't start it & they got it all the gasoline out you're fine.

THESE TRANSMISSIONS USE SPECIAL OIL.. YOU CANNOT USE REGULAR TRANSMISSION OIL... SINTHETIC OIL AND ITS MORE EXPENSIVE... DRAIN THAT IMMEDIATELY AND REPLACE..YOU COULD HAVE DAMAGED THE ****** BY PUTTING THE WRONG OIL.
FOR FURTHER INSTRUCTIONS REQUEST FREE INSTRUCTIONAL MANUAL AT WWW.BESTDIRECTORYSOLUTIONS.COM

Replace the spark plug to new one they rarely come good or be reliable once fouled shouldn't need to clean carb but if were mine I would clean it anyway
regards Jamie

The mix fuel mix is 40:1. Use Husqvarna 2 stroke oil not the cheap stuff on sale at car service stations. The chamber for oil is for chain oil which can be bought at most places that sell or hire machinery like chainsaws, lawnmowers etc.

hi because you ran engine and it stopped/failed to restar although you renewed fuel which was 2 stroke ? the wrong fuel will be in carb's float chamber and probably ran engine eventually oiled plug may i suggest you clean plug then clean carb out remove main jet and idle and blow them clear so you can see thro them refit and fill f/chamber to 3/4 full then re assemble carb should start then

The best thing to do is see if your Mom has the operators manual. If not, the best thing I can do is guess. Most chainsaws are two cycle. This means that fuel and oil has to be mixed. There is a formula that you can find on line depending on what ratio is needed. The other chamber that says oil on it is the tank for the Bar Oil. That is the oil that lubricates the bar and chain as the machine is running. You should get some oil that is formulated just for bar lube. Do mix fuel and oil, do put in bar oil...Good luck...Lee

Just drain the oil, refill, and I think I'd run it to warm it up fully AFTER draining and refiling, and drain and refill again. You shouldn't drive it w/ gasoline in the oil, as it will thin out the oil and it won't lubricate as it should, and the extra half litre would be overfilled a bit, which would cause the oil to foam, which also would affect lubrication. countrycurt0