Hello, I have a question about the petrol saws on the carburetor, there are two screws to adjust, one is the letter L and the other H, what is the matter with these markings? I would like to ask for some information.
LOW and HIGH? I'm not sure, but they set the engine speed. L is used to set the idle speed. The point is that the saw has a centrifugal clutch. And it cannot be turned on when the engine is running at idle speed. So these rotations need to be adjusted.
H is nothing else than the regulation of the mixture, and thus the max speed of the knife and probably the maximal power are set. the maximum speed of the saw shaft is cos olo 18000.min. So big.
L - adjustment of the mixture composition at idle speed H -adjusting the composition of the mixture at high speed
The point is that there are two throttles inside the carburetor: the starting throttle (the so-called choke) and the main throttle to control the engine speed. With these H and L screws you adjust the fuel / air ratio correspondingly for each throttle.
And to adjust the idle speed, the third screw - T is usually used
