Question: How To Adjust Carburetor On Stihl Fs 80?

How do you adjust a Stihl carburetor?

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.

How do you adjust the carburetor on a Stihl hedge trimmer?

The standard settings for the HS45 are set as followed (as advised by Stihl): Turn the high speed screw (H) counterclockwise as far as stop (no more than 3/4 turn). Turn the low speed screw (L) clockwise as far as stop, then turn it back 3/4 turn. *Please note: Do not overturn the screw as this may damage the thread.

How do you adjust the idle on a Stihl weedeater?

How to Adjust the Idle on a Weed Eater

  1. Place the Weed Eater trimmer on a workbench or other flat surface.
  2. Locate the idle speed adjustment screw situated to the side and slightly behind the air filter.
  3. Turn the adjustment screw to the right, or clockwise, to increase the engine idle speed.
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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.

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.

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).

What is the La adjustment on a Stihl?

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.

Does carburetor cleaner work?

Most carburetor cleaners do the work for you, no scrubbing required. Readily available and affordable. Most auto parts stores will carry a few brands of carburetor cleaner. Typically less than $20, carburetor cleaners are a cheap, efficient way to improve the overall performance of your vehicle.

Should trimmer head spins at idle?

A string trimmer uses the same clutch mechanism as a chainsaw to prevent the working part of the tool from spinning when the engine is idling. If the clutch isn’t working properly and the string won’t stop turning, the tool can be dangerous — it could damage something or even cause injury.

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Why does my Stihl trimmer keep cutting out?

The trimmer can sputter and stall if it isn’t getting enough fuel, and that can happen simply because the fuel filter is dirty. Fuel filters are inexpensive, and it’s more practical to replace a dirty one than it is to try to clean it. On most models, it’s in the gas tank or on the cap.

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