Forest & Garden 125c 17″ Curvgastrimmer

Experienced gardeners share their insights in answering this question :
Your carburetor is probably clogged, this is very common. Once this happens you might try
spraying some carb cleaner into the carb and let it soak for a
few hours but most of the time you have to remove the carb and
disassemble it to unplug any small orifices that are clogged with a
small wire. You can pull out a small wire from a wire brush and that
usually is stiff enough and small enough to do the job and then spray
carb cleaner into it and let it soak for hours. You might also replace the carburetor gaskets and fuel filter and diaphram.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

An engine that will fire and run with the choke closed but dies when the choke is opened likely has debris at least partially blocking the fuel passages in the carburetor. In this condition the closed choke provides enough extra fuel to enter the engine to overcome the lack of fuel flowing through the other passages.
If your bike is only running with the choke on, it`s probably because it`s running too lean. This can be caused by a few different things: All internal combustion engines need three things to run: fuel, air, and spark. If any of these are missing or not working properly, the engine won`t run.
An engine that requires the choking (partial or full) after initial engine warm up is an indication that the engine fuel air mixture system is out of adjustment. Leaving the choke on while operating will result in excessive fuel consumption, irregular engine power performance and eventually may even damage the engine.
If a motorcycle or ATV only runs with the choke on, it`s because the richer “choke on” mixture is actually closer to the engine`s normal operating fuel mixture than the leaner “choke off” mixture. So when the choke is turned off, the engine gets too little fuel and too much air for it to run and it stalls.
Choking is the fourth leading cause of unintentional death in children under the age of 5. Children under age 5 are at greatest risk for choking injury and death.
The choke, a butterfly valve, reduces the intake of air and allows a fuel-rich charge to be drawn into the cylinders when a cold engine is started. As the engine warms up, the choke is gradually opened either by hand or automatically by heat- and engine-speed-responsive…
Chokes are designed to close off or “choke” the air supply in order to provide the proper ratio of fuel to air. An engine needs more air as it warms up, so the choke needs to open to allow more air.
Don`t Ride in Choke condition, it will consume more fuel, with less efficiency.
Turn on the ignition of your car. Once the engine is warm, you can remove the air filter and check whether the choke is open or closed. At this point, the choke should be open to allow the engine to breathe fully.
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.
This mainly happens when there is dirt in and around the parts of the carburetor. The areas of concern here include fuel lines, petcock, pilot jets, or fuel filters. The dirt blocks the fuel passage and it cannot reach the carburetor properly.
The Choke Pull-Off, or Choke Break, is vacuum-operated and designed to open the choke plate slightly after a cold engine start to prevent engine flooding. Automotive professionals often recommend a vacuum check for proper operation or replacing whenever the carburetor is serviced.
What happens if choke stays closed? If the choke stays closed, the engine may not receive enough air to start or run properly. This can cause the engine to run rich, meaning that there is too much fuel in the mixture, which can lead to poor performance, stalling, and/or difficulty starting.
Chokes are designed to close off or “choke” the air supply in order to provide the proper ratio of fuel to air. An engine needs more air as it warms up, so the choke needs to open to allow more air.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Battery the battery is dying and it will start but, after a few mins the engine starts to sputter then goes back to idle and eventually dies. could this just be the dead battery? is that the reason the engine dies?
ANSWER : Usually, if the battery is dying, it won’t start up again.
Usually, motorized vehicles only use the battery to start the engine, then the alternator contributes all the power for actual operation.
A dead alternator or battery shouldn’t ‘sputter’, they would just stop dead.

If the engine will start, run and then sputter…there is a fuel problem.
1. There may be a ‘cut-off’ in the fuel line which is in the off postion. It may look like a thin, flat wing-nut.
2. The gas may be contaminated with water residue if the gasoline has been sitting a long time. I believe you can get some water treatment to fix this without having to dump the fuel tank contents.
3. The fuel line is blocked with dirt somewhere, I would check the fuel filter and work backwards from there.

Engine quits running at full throttle and hot
ANSWER : Sounds like coil but check oil

Engine running rich?
ANSWER : Worn float needle or obstructed airflow (plugged foam filter)

I am another owner of the 24 hp. briggs and stratten ELS that has blew a rod out the side. How can I get help replacing this motor that has been such a terrible problem

Blower only runs with full choke. When I switch to half choke, it dies and won’t start.
ANSWER : It may simply need the high speed jet opening up a bit (2 screws near eachother on the carb and the high speed is furthest from the engine)failing that it needs a carb kit…. this is a serviceable item changed regularly.

While running blower starts dying down in power going up and bown and cuts off
ANSWER : I wonder if it is starting to seize. Have you been using cheap ethanol gas. Or have you done research online for gas stations that sell real gas? If you don’t use real gas on a 2 stroke engine it will over heat and eventually burn the valve and cause distortion all over. It will eventually seize.

I am having problem with my engine, it wont stay running when u cut the choke off. and i noticed one spark plug is not firing. could this cause it to die when u push choke in????
ANSWER : Yes that could cause it to stall without choke, check plugs, wires, coils and air filter. It could be any one of those.

Honda g100 stationary engine starts and runs well on full choke but will not run without choke.
ANSWER : Same problem here. I solved it by removing carburetor, removing float and valve seat and soaking in carb cleaner overnite. Blew out all the orifices with air and reasembled. Runs as good as ever!Always turn gas off and run until empty, gas evaporates and leaves residue in bowl and valve.