back up and goes into the same cycle over and over. Is there a way to maybe adjust the idle? Or is there another problem that maybe I haven’t considered?
Garden

Experienced gardeners share their insights in answering this question :
Hi, its called “hunting” and is caused by insufficient fuel getting through the jets in the carby. The carby will need to be disassembled and have the jets cleaned. Any one with some mechanical knowledge can do this as no parts are required. Hope this helps, regards Phil.

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 :

A Dirty Carburetor Can Cause a Lawnmower To Start Then Die

By far, the most common issue that causes a stalled motor is a dirty carburetor. The carburetor on your engine is the thing that draws in air and mixes it with the fuel. Contrary to what the movies might make you think, gasoline itself is not very flammable.

The mower surges when the carburetor sucks air through an unsealed gap in the air intake manifold instead of through the air filter. Dirty carburetor. Clogged fuel jets inside the carburetor commonly cause the lawn mower engine to surge. Clogged jets can`t provide the right mix of air and fuel to the engine.
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.
If your lawn mower cuts out, smokes, idles poorly, vibrates or runs erratically, it could need a good tune-up to replace the spark plug, oil and air filter. Or the problem could be with the lawn mower`s fuel system. Rebuild or replace the carburetor if the engine isn`t getting a good supply of fuel.
If your lawnmower starts up but then dies in the middle of mowing your lawn, you could have a bad spark plug. The spark plug works with the ignition coil to create a timed spark in the cylinder, causing combustion. The spark plug is really a very simple device.
Another reason a mower might start and then stop is that the air filter becomes blocked. If this is the problem, then it`s good news because it`s easy to fix since most mower filters are cleanable. Check to see if the filter is blocked and clean as necessary – then try again to see if this has solved the problem.
Condensation inside the gas tank is one culprit, but moisture can also enter the system through a loose or ill fitting gas cap. The best solution is to drain the mower`s gas tank and refill it with fresh gasoline. A clogged fuel filter can also cause a mower engine to die.
If your lawn mower starts, runs briefly, then dies these are the four most common reasons that`s happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.
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.
Water in the Fuel Tank or Fuel Line

If there is water in your tank, siphon or drain it, then add new gas. After old gas in the line works its way through the mower`s engine it should stop sputtering and run like new again.

If your lawn mower starts, runs briefly, then dies these are the four most common reasons that`s happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.
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.
A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

I have a MTD model series 540 mulching lawnmower. The idle seems to be messed up. It runs and sounds like it’s going to die out and then picks back up and goes into the same cycle over and over. Is there a way to maybe adjust the idle? Or is there another problem that maybe I haven’t considered?
ANSWER : Hi, its called “hunting” and is caused by insufficient fuel getting through the jets in the carby. The carby will need to be disassembled and have the jets cleaned. Any one with some mechanical knowledge can do this as no parts are required. Hope this helps, regards Phil.

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Mtd 19 In. 173 CC OHV 3-In-1 self propelled. Drive will not engage. Appears as if the belt is too loose even when the drive control bar is depressed all the way. Is this adjustable? This mower hasn’t enough hours on it to stretch the belt, it seems in great shape.
ANSWER : Between the handle and the connection to the drive system, look for adjustment screw or nut and screw on cable. Maybe even check the spring tension, if handle is spring loaded and the spring is stretched it will not engage drive system. If no adjustment to be found then you must get new belt. Good Luck…

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How do you remove the ignition coil? I can remove the bolt quite easily, but how do you remove the post which secures the other end of the coil?
ANSWER : Would of been very helpful if you would of mentioned the engine you are working on… model/serial numbers would of been even better !!!

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HOW DO YOU ADJUST HIGH AND LOW SPEEDS ON HOMELITE BLOWER UTO8087 IF ONLY 1 SCREW ADJUSTMENT. 1 PORT FAC. PLUGED OFF.WHAT SHOULD IDLE RPM LOW B APPROX./ HIGH RPM
ANSWER : All the pictures I have of this carb show two adjusting screws.

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I have got a MTD push mower Model no, 11A41MB029 SerialNo. 1i158K70951 It starts just fine and Idles fine too. The problem is that is does not speed up when cutting grass. This model has a choke if that makes a difference. It appears that all linkage is in place and not bent. What am I missing here? There must be some kind of adjustment some where that needs to be made.
ANSWER : There are 2 things and whitch carb,one has a diafram ,I dont think that is yours, your has a bowel on the the carb take 7/16 wrench remove your bowel on the carb clean it out,and some the bottom bolt is your jet you will have to clean it out,

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2008 mtd lawnmower tries to start when sprayed with carb cleaner but stops after 3 seconds
ANSWER : If the spark plug is in great condition, remove and clean the carburetor. This will require soaking if needed with a good solvent or carb cleaner and compressed air to blow out the tiny passages that are clogged for the idle jet circuit and high speed circuit.

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Member Discussion on Husqvarna 240e Chainsaw Idle Adjustment I have a new 240e and cannot keep it running. It will start, after many pulls, and one of two things happens. After running for 30 seconds, I will tap the trigger to set the idle and it will promptly idle down and die. Or, I do nothing, and it will idle for a bit and die. Restarts are difficult. I did not get a manual with the saw, so all I have to work with is one I downloaded. Idle adjustment is mentioned, but no indication where this adjustment might be. Thanks
ANSWER : Its not an idle screw adjustment issue, it is a mixture screw adjustment issue, unfortunatly there is a special tool to adjust the mixture screws, pt no. 530035560 ( available from Hysqvarna dealers ) once you have this tool you can make an adjustment to the L screw on the carb, undo ( anti clock wise ) this screw ten minutes on a clock face ,this will richen the muxture, and should make it more stable on idle.

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Starts runs then dies. will start again in 20 min,
ANSWER : I had the same problem….Look at the gas cap…Small hole in the cap was plugged. After replacing plug, adding stabilizer, changing filter a mechanic told me about the cap. Two seconds later and a toothpick the problem was solved.

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