Keeps stalling mower keeps stalling in and out, it isn't the gas or the air filter, and the carb has been cleaned twice....what's the problem?

Sounds like its a fueling issue, or there lack of.. When your hand is over it you're restricting the air flow and the engine is receiving the right amount of air to fuel.. But with the filter on, its drawing too much air for the amount of fuel its getting.. Check the fuel lines, fuel filter, and carb settings if it has any tuning screws. If its a float type, make sure the needle valve isn't sticking.

Remove old gas. Remove carb bowl and clean. Ensure float is working, float down gas flow. Float up no gas flow. Use a bread wrap, clean off 1 1/2 in to expose wire. Insert wire in tube from bottom of carb up to behind choke flap. Ensure needle valve moves smoothly when float is moved up & down. Remove plug, should be wet if gas is getting to cylinder. Ensure air filter is clean. Ensure oil has been changed and filled properly. Ensure primer bulb isn't cracked. Pull recoil rope twice half way to prime carb then pull all the way.

Bad float. Remove bowl from carb. Replace float and meter needle valve.

No adjustment for carb on newer mowers. All mowers now have a low oil cutoff. Ensure oil is full. 30w oil. If any grey is observed vin oil drain all oil. Moisture in oil. Dump old oil out every 2 yrs and refill. Ensure spark pluf is clean and gapped correctly. Ensure air filter is clean. Replace spark plug and air filter each year. Always use Stabile in gas. Spray outside of carb with carb cleaner to ensure proper choke movement.

it does sound like a carb issue it may need to be rebuilt also check your fuel line and if you have a fuel filter check the filter clean the gov. assembly with carb cleaner

Soooo...You haven't said what the problem is. What "result" is the same?? Is it stalling or is it just not running at full power? If it starts fine and idles fine but then stalls or doesn't have power when you juice it, it sounds like a fuel problem. It is unlikely a carb issue if it gets regular use and as long as its not sitting for long periods of time. I would first check the fuel filter. If that's fine, then I would check the vent hole on the gas cap (if you have one). If it is a gravity-fed fuel system and the vent hole on the gas cap is clogged with dirt, dust, and debris, then the gas will not flow to the carb fast enough and you'll get a very lean mixture. Sure, it will idle fine because the engine isn't demanding much fuel at idle, but when you open up the throttle it will stall because the air:fuel ratio will be too high (symptomatic of a lean mixture) Last thought: Dirty air filter Hope this helps

If it starts fine and idles fine but then stalls or doesn't have power when you juice it, it sounds like a fuel problem. It is unlikely a carb issue if it gets regular use and as long as its not sitting for long periods of time. I would first check the fuel filter. If that's fine, then I would check the vent hole on the gas cap (if you have one). If it is a gravity-fed fuel system and the vent hole on the gas cap is clogged with dirt, dust, and debris, then the gas will not flow to the carb fast enough and you'll get a very lean mixture. Sure, it will idle fine because the engine isn't demanding much fuel at idle, but when you open up the throttle it will stall because the air:fuel ratio will be too high (symptomatic of a lean mixture) Last thought: Dirty air filter Let me know if this helps

check your air filter. If it's clogged, the engine will spool up to keep from dying, run for about 15 seconds, then it will happen again. If that's it, just clean the air filter. Solved my problem

I have a Craftsman 21 HP Twin riding lawn mower and have replaced both spark plugs, filter and battery. New gas. New Oil....still will not start?? HELP!!!

the problem is that your carbeurator is gummed from from sitting idle all winter with gas in it. Get an aerosol can of carbeurator cleaner, remove the air filter and give the air intake two squirts of carb. cleaner. Then start the mower. When it stalls again let it sit for an hour while the carbeurator cleaner works at dissolving some of that gum. Repeat the process until the mower runs again. Sometimes there is so much junk in the carb. that you have to remove it and soak it in cleaner for about three hours, and then rebuild the carb. with the proper little kit. hopefully you won't have to take this step.

Next fall let the mower run out of gas and stall then you won't have the gum in the carbeurator in the spring.