The brush cutter goes out after adding the gas or it is terribly muddy

Hello!
I have a EuroTec brushcutter, I have had trouble with it for some time, because after adding more gas it goes out or it goes out as if it was going to go out, the revolutions are very low. Earlier, I noticed where the air filter is that it is full of fuel and sometimes fuel leaked there, especially when the mower was no longer at the suction.
Do you have any ideas?
I would like to add that there are no L or H screws for speed regulation.

Try to clean the fuel system. Maybe it is contaminated and adding gas cannot give enough fuel and goes out and / or slime.

So I have to clean the entire carburetor? And by what means or simply from dust, etc.

There are special carburetor cleaners. You can easily get them on a popular auction site for a maximum of PLN 20. Then blow out the nozzles and small holes with compressed air. Also, don't forget to blow out any fuel lines.

So I did what my colleague wrote above and there is indeed no silting and it does not go out, but there is another problem now, when I start the scythe, it starts at the same speed, often the speed is not equal after adding the same amount of fuel (after adding gas). I noticed that when the scythe is choking on the choke, it is so screaming and dark gray smoke is there, and after a while fuel leaks from the air filter, maybe it should be like that or I didn't pay attention to it.

There is no way fuel should leak from the air filter, if it is at the intake the fuel can escape through the muffler, not burnt fuel.

But it's leaking there, what should I do?

Problem still not solved, please help.

At the author's request, I am restoring the thread.

Gentlemen, there must be a muffler already dead. Cleaning and trying again.

The fuel sold in Poland is not conducive to membrane carburetors. Unfortunately, after a short time of 1 - 2 years, the damage to the abovementioned You can then yank or "bite" the tool out of anger. No adjustment helps, passed cleaning ... no wonderful carburetor cleaners. This applies to lawn mowers, brushcutters and chainsaws. The "brand" ones withstand a little longer the effects of petrochemical products ...
Thank God, or rather the Chinese, the carburetor costs PLN 25-30, so cleaning and replacing the diaphragm makes no sense immediately replacing the carburetor and the equipment returns to normal operation, which I wish to a distressed colleague. Of course, repairing in this way is working on a Chinese scythe, because replacing the carburetor in a brand scythe is not an option due to the cost - here, replacing the membrane.
Slawek

Solved topic, broken fuel lines.