Mtd
Experienced gardeners share their insights in answering this question :
Hello,
My name is Dane and I’ll try to help you with your problem. I am assuming due to your Icon, this is a push mower. First off, I would venture to guess that you have either a clogged carb, or a bad diaphragm. Gasoline left in the tank for longer than just two months will begin to deteriorate and clog fuel systems unless you use a fuel stabilizer additive. You will probably need to remove, soak, and use compressed air to blow out the jet’s in your carb. Pay close attention to how the carb is attached to the engine. Make a drawing if you need to. Disassemble the carb as far as possible and put it in the cleaning solution. Allow it to soak in cleaner overnight, and then blow out the ports and jets before you assemble and reinstall it. I would also replace any gaskets and the diaphragm, if equipped.
I hope this helps. Thanks! Dane
My name is Dane and I’ll try to help you with your problem. I am assuming due to your Icon, this is a push mower. First off, I would venture to guess that you have either a clogged carb, or a bad diaphragm. Gasoline left in the tank for longer than just two months will begin to deteriorate and clog fuel systems unless you use a fuel stabilizer additive. You will probably need to remove, soak, and use compressed air to blow out the jet’s in your carb. Pay close attention to how the carb is attached to the engine. Make a drawing if you need to. Disassemble the carb as far as possible and put it in the cleaning solution. Allow it to soak in cleaner overnight, and then blow out the ports and jets before you assemble and reinstall it. I would also replace any gaskets and the diaphragm, if equipped.
I hope this helps. Thanks! Dane
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 :
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.
The most likely cause of a no-start mower after running out of gas is dirt in the carburetor, but other possible causes include: Air locked gas system. Faulty carburetor. Contaminated gas.
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 carburetor is controlled by pressure differences. In the main body of a four-barrel carburetor there are four venturi. The shape, size and length of each help determine airflow and fuel flow into the engine. The term venturi came from its inventor Giovanni Battista Venturi.
For MTD mowers, the most common cause of fuel not getting to the spark plug is a clogged-up carburetor due to the buildup of debris. To fix the problem, clean up the carburetor by taking out the fuel bowl and spraying the carburetor with some carburetor cleaner.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
A full gas tank and oil reservoir are the essential first steps when checking why the lawn mower won`t stay running, but the problem could also be a dirty filter, clogged carburetor, improper fuel mixture, or a dirty spark plug.
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.
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).
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.
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.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
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?
ANSWER :
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My tractor stalls like it is starved for gas although the gas tank is full. I,ve changed the fuel filter and the gas cap. I’ve cleaned out the gas tank, gas lines, and the carburetor bowl. The problem seems more acute when the gas tank is full or near full. At this time to alleviate the problem, I blow through the gas cap and the fuel filter fills with gas and it runs good again. But as soon as the fuel filter has no more gas, of course, it stalls until I blow on the gas cap. As the tank gets down to about 1/3 full, the engine runs OK. What else could cause this condition?
ANSWER : I had a similar problem with a sears tractor. close to the carbarator is a rectangle box with a rubber hose going to the engine block – remove the hose and spray carb cleaner in the hose wait a few mins and try again – its a vacuum for the carb
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Just bought a used leaf blower, homelite, gas leaks out of the gas tank, where the gas tube fits into it.
ANSWER : “top of the gas tank where the gas tube fits into the tank”
I assume you’re describing the gas tank cap. if so, the o-ring is missing from the gas tank cap. You can find those at hardware stores.
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Flooding carb when i put fuel in the tank the engine floods without running the gas fills and overflows the air inlet till the tank is empty the tiller is not running and the gas keeps flooding the intake till the tank is empty ?
ANSWER : The fuel lines were hooked up backwards thanks
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Gas tank leak – Husqvarna , No.455 Rancher, 20" Gas – Powered Chainsaw
ANSWER : From weher? between cap?
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Weed eater starts but won't stay running – Weedeater 19 in 25cc Gas Hedge Trimmer
ANSWER : Probably “gum” and “varnish” build-up clogging the TINY passages [called ‘galleries”] inside the carb!
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Why will My weed eater only run with the choke fully on and cant give throttle?
ANSWER : It sounds like the carb needs adjusted. Things can even happen to new weed eaters.
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I have a Toro 20332 that stopped running after 20 minutes and would not restart. Tried several days later and it would start for a few seconds and stop again. Took it to the Tor dealer twice last year when this happened and was told it was bad gas. Replaced gas can and used new gas still having the issue. The odds of 3 bad tanks of gas are pretty slim. Any thoughts?
ANSWER : Just take off your carb and give it a good cleaning. Be careful and watch how everything comes apart so you can put it back together with little or no trouble.
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