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.
How do you adjust the idle screw on a weed eater?
Why does my Stihl weed eater dies when I give it gas?
When a weed eater starts okay but dies when throttled, it often indicates that there is restricted fuel flow. A fuel filter can get clogged with impurities to a point that it allows a small amount of fuel through (enough for starting and even idling) but won’t let it through at a rate sufficient to rev up.
Where is the idle screw on a Stihl weedeater?
Why does my Stihl weed eater keep shutting off? – Related Questions
How do I adjust my Stihl idle?
How do I reset my Stihl carburetor?
Disengage/release the chain brake. Open/squeeze the throttle fully for at least 30 seconds (B in the diagram) Engine speed varies noticeably during calibration. As soon as the engine speed drops noticeably (C), release the throttle back to the idle position.
Where is the idle control valve located?
Locating the Idle Air Control Valve
The IACV is usually located on the intake manifold near the back of the throttle body. Before starting the cleaning process, be sure the vehicle is not running and that the engine is cool.
Which screw is the idle screw on a carburetor?
Where is the carburetor adjustment screw?
What is the LA screw on a Stihl carburetor?
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. This screw is inside the engine housing on the carburetor, but is accessible through a hole or gap in the outer housing of the saw.
What does L and H mean on a carburetor?
The letters on the screws represent High (H), Low (L) and Idle (T). The H screw regulates the Air/Fuel mix during high RPMs, while the L Screw does the same during low RPMs. The T screw regulates how much fuel is sent to the carburettor while idling until the throttle is pressed.
What is H and L on carburetor adjustment?
Start by locating the three adjustment screws. They are typically labeled L (low speed jet), H (high speed jet), and I (idler jet).
How do you adjust a Stihl FS carburetor?
How do I know if my carburetor needs adjusting?
The engine should rev smoothly and quickly as soon as you apply throttle. If the vehicle is displaying any sort of sluggish performance or misfires when you apply the throttle, then more adjustments are required.
How do you clean a 2 stroke carburetor without removing it?
Spray liberally with carb cleaner – trying to direct the cleaner into the jets – and leave to soak for a few minutes. Use an air line (or a can of pressurised air, sold as an ‘air duster’) to blow through the jets. Repeat the previous step and this one until you can see no more gunge.
How do you tell if a carburetor is rich or lean?
If the mixture is too lean, it will leave no color, while a rich mixture will cause the fuel ring to become more prominent. Over-rich mixtures will give the plug a sooty appearance.
How do you tell if a 2 stroke is rich or lean?
keeping the engine under a light load (you will only be opening the throttle to 1/2 or so) If the needle is set too rich you will hear a sputtering like the choke is on and the acceleration will be slow. If the clip position is too lean the engine will sound quiet and have a “dead” feeling possibly hesitating.
What are the symptoms of a rich fuel mixture?
Seven Signs Your Air and Fuel Mixture Is Too Rich
- Check Engine Warning. If your vehicle’s exhaust has too much gas in it, your check engine light will come on.
- Strange Odors.
- Poor Fuel Economy.
- Engine Performance Problems.
- Emissions Test Failure.
- Engine Idle Trouble.
- Part Damage.
What are the symptoms of a lean fuel mixture?
Here are some of the most common symptoms of how to recognize when your engine is running lean.
- Starting Trouble. This symptom shouldn’t come as a surprise because vehicles need fuel to start.
- Decrease In Performance.
- Clean Spark Plugs.
- Check Engine Light.
- Stalling Engine.
What happens if the fuel mixture is too lean?
A lean mixture occurs when there’s a higher concentration of air to fuel than there should be. When this occurs, your engine will likely still run but will result in jerking motions within the mechanics of the combustion engine which in turn leads to damage to the engine, such as burned valves.