Readers ask: How To Adjust The Carburetor On A Weedeater?

How do you adjust a carburetor on a Stihl weedeater?

Start the trimmer and hold the throttle trigger in all the way to get the trimmer head spinning at maximum speed. Turn the H screw clockwise with a carburetor adjustment tool until the head is spinning as fast as it will go, then back off the screw carefully until the RPMs start to decrease.

Why does my Weedeater only run on choke?

When your trimmer starts and runs on choke, it could be because the check valve in the gas cap is clogged. Start the trimmer and gently unscrew the gas cap halfway off. Turn the choke off and assess. If the engine is still running, that means the gas cap may be the culprit.

How do you adjust a high and low carburetor?

Locate the two fuel-adjustment screws on the side of the carburetor. One will be labeled “Hi” and the other “Lo.” The “Hi” screw regulates the engine at full throttle and the “Lo” regulates the fuel when the engine is idling.

How do you adjust air and fuel mixture?

Turn the screw clockwise until the engine starts to sound rough.

  1. Tightening the screw weakens the air and fuel mixture and decreases the amount of fuel flowing to the engine.
  2. Tightening the screw is also called making the fuel mixture leaner, which lowers the RPMs at which the engine idles.
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Is it illegal to own a carburetor adjustment tool?

it is illegal by EPA regulations to sell carburetor adjusting tools and illegal to buy them unless you are a servicing dealer.

What is the H and L on a carburetor?

They are typically labeled L (low speed jet), H (high speed jet), and I (idler jet).

Why does my trimmer dies when I give it gas?

Why does my weed eater die when giving it gas? The most common causes of a weed eater dying when throttled are fuel issues, insufficient air intake, or problems with the exhaust. You should follow the path that the fuel travels to identify the issue.

Why does my string trimmer keeps stalling?

A clogged fuel filter is most commonly caused by leaving fuel in the string trimmer for a long period of time. This sticky fuel can clog up the fuel filter and cause the engine to stall. If old fuel was left in the string trimmer, drain the old fuel from the fuel tank and replace the fuel filter.

What happens if choke is left on?

Leaving the choke on for too long will cause unnecessary engine wear and waste fuel. The engine needs its fuel to be vaporised in order to burn it. This is done by the carburettor where the fuel is mixed with clean air coming from the air filter, and sent into the pistons to be ignited.

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