FAQ: How To Adjust Husqvarna 128ld Carburetor?

How do you adjust the carburetor on a Husqvarna trimmer?

Adjust the idle speed by inserting the screwdriver into the hole marked “T.” Turn the screw in clockwise until the trimmer head starts to rotate. Turn the screw back in ΒΌ increments until the cutting head stops spinning. Readjust the screw marked “L” to fine tune for the optimum engine performance.

How do you adjust a carburetor on a small engine?

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.

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.

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 I know if my carburetor is rich or lean?

Q: How Do You Tell if a Carburetor Is Rich or Lean? A: One way to tell for sure is by “reading” the spark plugs. If the plug tip is white, the mixture is lean. If it’s brown or black, it’s rich.

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How do you adjust a rich carburetor?

Regardless of whether or not the engine is running too rich or too lean, bring it down to a very lean mixture by turning both screws a quarter-turn at a time, counter-clockwise, then slowly bringing them back up to an equal and smooth mixture.

What size is Husqvarna fuel line?

Fuel line size: 3/8 in. x 2-1/2 in.

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