e and the. Cuts off. I changed the fuel filter and the fu

Experienced gardeners share their insights in answering this question :
I have an LX188. Does yours have an electric fuel shutoff? Look for it. Mine went bad.

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This could be due to a number of reasons, such as a fuel filter that is clogged, a faulty fuel pump, or a blocked fuel line. Other issues include a faulty carburetor, a misaligned float, or a worn gasket.
Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.
Check the Fuel Filter

To start, tap the side of the carburetor to help the flow of gas. If that doesn`t work, you might have a clogged filter. Not all lawn mowers have a fuel filter, but for the ones that do, it`s usually located in the fuel line or the fuel tank.

The “Bog” simply means the engine is not receiving enough fuel when you go to wide open throttle. While there are other issues that may cause similar reactions within the carburetor, often the problem can be traced back to the accelerator pump system. Incorrect adjustment is the typical culprit.
Inside the float chamber of the carburetor, you`ll find a mixture needle. It controls the amount of fuel sent into the discharge nozzle. The mixture control in your cockpit directly links to this needle. The mixture needle is your way to change the fuel/air ratio entering the engine.
Common causes include a dirty air filter, spark plug, and carburetor. To fix these issues, replace the fuel filter, clean the carburetor and spark plug, and replace the fuel if it is old as illustrated below.
To check fuel delivery, remove the fuel line where it enters the carburetor and use a length of rubber hose to direct the flow into bottle or similar container. Fuel should pulse out in strong spurts if your engine is equipped with a mechanical fuel pump (electric fuel pumps are more of a steady stream).
Bad Gas in Your Lawnmower? Here`s How to Fix It. If you neglected to add gasoline stabilizer to the fuel prior to storage, empty the tank and replace with fresh gas. If the tank is nearly empty, simply topping off with fresh gas is often enough to get it started.
If the filter gets clogged, you will likely encounter issues with your lawnmower. This can be something as simple as an annoying sputter when you try to start the mower, difficulty getting it started, or it can cause the mower to idle unevenly.
Carburetor flooding happens when there is an excessive amount of gasoline entering the carburetor. This can happen when the float in the carburetor is damaged, the needle and seat are dirty, or there is a problem with the vent tube.
Carburetor flooding happens when there is an excessive amount of gasoline entering the carburetor. This can happen when the float in the carburetor is damaged, the needle and seat are dirty, or there is a problem with the vent tube.
The most common cause of fuel pump failure is frequently running the tank low on fuel, which causes the motor to overheat. The second most common cause is fuel contamination, usually dirt and rust particles that clog the fuel strainer and prevent the pump from drawing enough fuel under high engine load.

Discover Relevant Questions and Answers for Your Specific Issue

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I have changed the fuel filter on a John Deere L130 garden tractor and the engine is still not getting gas. Is there a fuel pump or other part which would stop the flow of gas to carbuerator?
ANSWER : Underneath carb bowl should be a wire. Unplug it and remove ( unscrew) electric gas shutoff. Replace.

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My la 125 john deere runs about 30 minutes then looses all fuel Ive changed fuel pump and filter and cleaned tank and pickup tube
ANSWER : Check the switch on the botom of the bowl of the carb

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How do i replace a clutch on a JD 3020 tractor
ANSWER : Break it in half, then get with it.

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I have a John Deere LX280 that won’t start. Have good spark, good fuel flow through fuel filter, and fuel in the carb bowl, but no fuel at the either of the plugs. Suspect either the safety shut off switch under the seat, or the solenoid under the carb bowl, but not sure how they are designed to work, or how to bypass them for troubleshooting purposes. Can anyone help shed some light on how the seat switch and carb bowl solenoid work, and offer any suggestions for how to get fuel to the plugs?
ANSWER : The fuel solenoid is 12 VDC. You can power it directly with 12V from the battery with the connector disconnected. It is powered from terminal A1 of the Key Switch with the switch ON. Before powering it up do a resistance check of the coil on the solenoid. It should read 40 Ohms or less.
The seat switch only provides a ground for the ignition. If the starter solenoid is engaging you should also have power to the fuel solenoid. Check for 12VDC on the engine harness for the solenoid with the Key ON. If you have 12VDC the solenoid is bad.

I am answering this post now as it appeared AFTER I had replied to another post. I note your post is 7 days old. Had I seen it 7 days ago I would have answered at that time. Sorry for the belated response.


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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?

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I have John Deere GX345. It does not start consistently. When it doesn’t start the plugs have no spark. The problem is intermittent.All electrical connections look clean and no corrosion. Re- seated all connections. Fuel flow is good because I can smell raw fuel while cranking the motor. I replaced the fuel lines last year. Thank you for your help. Daryl Witowski
ANSWER : Look for a small silver box with 1 wire on it mounted to the motor. It is a temp sensor and will keep it from firing…Just had to replace mine…

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My Tractor (425) won't start – John Deere 420,1020,2010,2020,2510,2520 Tractor Float
ANSWER : If you have no spark the first thing to replace the time delay module on the left rear side of engine. Its black and about 2 inches by 1 inch with yellow,red,orange and black wires going to it. Replacement is round shaped with same amount of wires.If no fuel to carb check for flow at filter, if theres flow but no pressure look for a split fuel line in tank between pump and sender.

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I cannot get the tractor to continue running even after I add starting fluid. It runs as long as I add fluid. I bought a fuel filter , pump and hoses. I still can’t get the engine to keep running. I even took off the gas tank and drained it. John Hanna Jr, Gallatin, Tennessee 37066
ANSWER : I would take the carburetor apart and soak it in a solvent. It is very common for the fuel passages to become blocked by gasoline which has turned to a shellac type substance over a long winter of sitting idle. If it was running fine earlier this year then that is not the problem, but it sounds like a fuel supply and you have excluded the other possibilities so I would give that a shot anyway.

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