What is the LA setting on Stihl chainsaw?

The LA setting on Stihl chainsaws is controlled by a screw on the outer housing of the engine that adjusts the flow of fuel and air through the carburetor. These screws adjust the engine’s output at low and high speeds.

How do you adjust carb screws?

Turn the high speed or main jet screw clockwise until the engine begins to slow. Then, turn the screw the other way until the engine begins to slow. Turn the screw back to the midpoint. Once adjusted, check engine acceleration by moving the throttle from idle to fast.

What does HL and La mean on a Stihl chainsaw?

One marked “H”, for high speed, one marked “L”, for low speed and one marked “LA”, which is your low speed air adjustment for idle.

How do you adjust a 50cc carburetor?

With the engine idling, turn the idle mixture screw clockwise in ¼ turn increments until the engine drops in speed. Count how many turns this takes. Turn the screw counter clockwise in ¼ turn increments until the engine revs back up and drops again. Count how many turns this takes.

How many screws are on a Stihl Chainsaw carburetor?

Stihl Chainsaw Carburetor Adjustment All Stihl chainsaws have just three carburetor adjustment screws, so fairly easy to work on when you need to a Stihl Chainsaw Carburetor adjustment. (LA) Idle Speed screw – This controls the engine speed at idle. If set too low, the saw will die.

Can you adjust the carburetor on a Stihl string trimmer?

You can adjust your carburetor on a string trimmer. Stihl is best known for its chainsaws, but the company also manufactures string trimmers, and they’re among the best on the market.

How to adjust the air and fuel on a Stihl Chainsaw?

How to Adjust the Air and Fuel on a Stihl Chainsaw 1 Things You Will Need 2 Tip. Never adjust the carburetor when the air filter is dirty. A dirty filter restricts air flow. 3 Warning. Always back the idle screw off enough to make the chain stop turning. The saw is dangerous if the chain turns while it’s idling.

How do you adjust a type a carburetor?

Return a type A carburetor to its factory setting by turning the “H” screw counterclockwise until it stops, turning the “L” screw clockwise until it is seated, then backing it off one full turn. Adjust a type B carburetor by following the same procedure, but instead of backing the “L” screw off one turn, back it off only 1/4 turn.