Lawn mower keeps stopping. Lawn Mower Runs for 30 Minutes Then Dies: Why and How to Fix

Why Does My Lawn Mower Keep Cutting Out?

Have you ever been in the middle of mowing your lawn, and your lawn mower just cuts out? You try to restart it, but it just won’t turn on? This can be frustrating, especially if you’re unsure what’s causing the problem.

In this blog post, we’ll take a look at why does my lawn mower keep cutting out as well as provide some tips on how to fix them.

  • Why Does My Lawn Mower Keep Cutting Out
  • 1. The Gas Tank is Empty
  • 2. The Spark Plug is Broken or Damaged
  • 3. The Air Filter Needs to Be Replaced
  • 4. There is Oil Leaking from Somewhere
  • 5. Grass or other Debris Clogging the Area Around the Engine
  • 6. The Pull Cord is Stuck in the Pulled Position
  • 7. The Mower Deck is Misaligned
  • 8. The Spark Plug Wire is Disconnected from the Spark Plug
  • 9. The Mower Blades are Dull or Damaged
  • 10. The Battery is Dead or Damaged
  • Maintenance Tips to Prevent Your Lawn Mower from Dying
  • FAQs- Why Does My Lawn Mower Keep Cutting Out
  • Why Does My Lawn Mower Only Run for a Few Seconds then Die?
  • Why Does My Lawn Mower Cut Out When I Try to Accelerate?
  • How Do You Fix a Lawn Mower That Starts Then Dies?
  • Author

Why Does My Lawn Mower Keep Cutting Out

Some of the most common reasons why your mower might be cutting out are:

The Gas Tank is Empty

If you run out of gas while mowing, you’ll notice that there’s no more power to the engine. When this happens, it’s essential to fill up the tank before restarting the mower.

If you don’t, your engine will crank but won’t start because it’s not getting any gas. Fill up the tank, try again, and it should work fine.

The Spark Plug is Broken or Damaged

The spark plug provides a nice explosion of power to get the engine started. If the spark plug is broken, your mower won’t start. You may need to remove and replace the spark plug if this is the case.

The Air Filter Needs to Be Replaced

Sometimes, an air filter will become clogged with dust and dirt, and other general gunk over time. If this happens, you’ll notice that your mower’s engine will start to sputter and choke for instance a riding mower. You can usually replace the air filter with a new one.

There is Oil Leaking from Somewhere

Over time, an engine may leak oil due to the various moving parts and other forces at work. If this happens, you’ll notice that your lawn mower will start to smoke as it’s running.

This is a sign that there’s oil leaking from somewhere, and if it continues for too long, the engine may seize up altogether.

Grass or other Debris Clogging the Area Around the Engine

If there’s too much grass and gunk around the engine, it can cause your mower to start sputtering and stopping as you cut. To fix this problem, wash off the area around the engine with some water so that it’s nice and clean.

John Deere run 30 minutes then quit. Easy Fix!

The Pull Cord is Stuck in the Pulled Position

If you pull up on the pull cord and it doesn’t come back down, then that’s a pretty good sign that it’s stuck in the pulled position.

You’ll need to remove the spark plug and then insert a long screwdriver into the hole to fix this problem. Push against the inside of the pull cord assembly until it releases.

The Mower Deck is Misaligned

If the mower deck is out of alignment, this can cause many problems as you cut your grass.

For example, if the mower deck isn’t sitting flush with the ground and it’s angled upwards or downwards (or left and right), it will make cutting difficult and probably cause your mower to vibrate a lot as potentially cut the cord.

The Spark Plug Wire is Disconnected from the Spark Plug

If this happens, then your engine probably won’t start because it can’t transmit any power from the battery to the ignition coil. It’s a good idea to check the spark plug wire and ensure its properly connected.

The Mower Blades are Dull or Damaged

Sometimes, a lawn mower just won’t start because the blades themselves aren’t sharp enough to cut through the grass efficiently. In this case, just replace your blades with new ones.

The Battery is Dead or Damaged

In some cases, a lawn mower may have a tough time starting because the battery has been drained of power. If this happens to you, just replace the battery with a new one.

FAQs- Why Does My Lawn Mower Keep Cutting Out

Why Does My Lawn Mower Only Run for a Few Seconds then Die?

If your lawn mower runs for just a few seconds before dying, then there’s probably something wrong with the air filter.

Often, if the air filter is dirty, it can’t supply enough oxygen to your lawn mower’s engine. This will cause it to die after a few seconds.

Why Does My Lawn Mower Cut Out When I Try to Accelerate?

If your lawn mower cuts out whenever you press down on the accelerator, then there’s probably something wrong with the carburetor.

This part gets clogged up with gunk, and if you don’t clean it out, it can’t deliver fuel to the engine properly.

How Do You Fix a Lawn Mower That Starts Then Dies?

There are a few things that you can do to fix a lawn mower that starts then dies:

Make sure that the spark plug is connected correctly and functioning2. Check if the blades are dull or damaged and replace them if necessary3. Try cleaning out the carburetor to see if that fixes the problem

If all of these solutions fail, then you may need to get your lawn mower serviced or replaced.

If your lawn mower is cutting out, it could be several things. We’ve outlined the most common reasons why this might happen and how you can troubleshoot them.

Hopefully, this article will help you get your lawn mower up and running again in no time. Have you tried any of these solutions?

Let us know in the Комментарии и мнения владельцев below.


Hi, I’m Ricky. I’ve been involved in lawn care and landscaping from when I was 15. To be honest, I didn’t like the idea of pushing mowers, collecting grass clippings, and maintaining flowerbeds at the time. But having seem the passion my parents had for gardening and outdoors and the effort they put in maintaining the health and beauty of our landscape, I couldn’t help but not only admire their hard work but also I became a part of it. As someone who loves to spend time with nature’s best, I find myself learning a lot more about gardening and outdoors on a daily basis. Not to mention I love to share the knowledge I’ve gathered over the years with my readers at We Mow Dallas. To be clear, I don’t have a Master’s degree in gardening or anything like that. Everything I’ve learned about gardening, landscaping, and lawn care spring from passion and engagement with my parents. And with a ton of free information out there, plus the ability to run tests and determine what works best for lawn care and landscaping, every day is an opportunity to learn and implement something new. My goal with We Mow Dallas is to teach you exactly how to maintain your lawn and landscape. And since I walk the talk in reality, you shouldn’t hesitate to join me in this wonderful world of landscaping and lawn care. View all posts

Lawn Mower Runs for 30 Minutes Then Dies: Why and How to Fix

Lawn mower runs for 30 minutes then dies? You are in the middle of mowing and your lawn mower stalls. Well, obviously, your lawn mower is having a problem – from a bad spark plug to an overheated mower.

Top Reasons Lawn Mower Starting Then Stalling — Lawn Mower Troubleshooting

The good thing is that you can read about all the potential reasons why this is happening to your mower and, of course, all the solutions as well.

  • Why Does Your Lawn Mower Run for 30 Minutes Then Die?
lawn, mower, keeps, stopping, runs, minutes
  • – Bad Spark Plug
  • – Faulty Gas Cap
  • – Air Filter Problems
  • – Carburetor is Malfunctioning
  • – Lawn Mower Overheats
  • – Replace the Spark Plug
  • – Replace the Gas Cap
  • – Replace the Air Filter
  • – Repair the Carburetor
  • – When Should You Call a Professional if Your Mower Keeps Dying?
  • – What Major Reasons Are There for a Mower Dying?

Why Does Your Lawn Mower Run for 30 Minutes Then Die?

Your lawn mower runs for 30 minutes then dies if you are having issues such as a bad spark plug, air problems, a malfunctioning carburetor, or a faulty gas cap. You may even encounter the issue that your lawn mower runs for 5 minutes then dies.

– Bad Spark Plug

If your lawn mower stops while running, a bad spark plug might be the culprit. It is generally one of the most common reasons why this happens to a lawn mower.

While the system comprises electrodes that go through an insulator, the internal electrode can be damaged because of the numerous heating and cooling cycles it goes through, which causes the mower to die. However, sometimes, it is the damaged ceramic insulator that allows the electrode to ground the mower engine’s frame and causes the mower to die.

– Faulty Gas Cap

A faulty gas cap occurs when the check valve fails and no longer allows the air to go inside the gas tank, although your lawn mower will still start and run as it normally would. A vacuum starts to form in the fuel tank because air can get in to fill the space that the consumed fuel occupied when the mower engine consumes it from the tank.

As the vacuum becomes strong enough, the fuel will stop flowing to the carburetor and cause the mower to die in the middle of mowing.

– Air Filter Problems

Your lawn mower’s air filter function is to protect your mower from dirt and debris that can make their way to the engine through the carburetor during the mowing process. If it is worn out, dirt and debris can easily enter the engine, which could lead to many possible problems that could cause your mower to stall.

Another air problem that causes your mower to die is having too much or too little airflow into the engine. Air is a friend of gasoline. These two together allow your lawn mower engine to run properly. Limited airflow causes your mower engine to stall.

– Carburetor is Malfunctioning

The carburetor is the one that creates the proper mix of air and fuel required to get a smooth-running lawn mower. This mechanism comprises floats, springs, valves, and spray jets that can be clogged or worn out. If that happens, the probability that your lawn mower runs for 10 minutes then dies is high.

– Lawn Mower Overheats

There are five common reasons why your lawn mower runs good until warmed up: A problem with the carburetor, gas, oil, cooling, and vapor lock. While it is normal for your lawn mower to heat up, it is not normal for it to stop running.

So, fixing it immediately to avoid any disruption to your mowing session is the best thing to do. Here, we will discuss the possible issues and their corresponding solution.

Any gas that is older than 30 days should not be used and should be thrown away because it might clog up the fuel system with a gummy substance. If this occurs, you are required to clean the fuel tank thoroughly and replace the fuel hoses and fuel filters. Another thing is that you have to make sure to always check your fuel supply before mowing.

Lubrication is also important because problems with it can cause your mower engine to shut down when it starts heating up. Keep in mind that you should always check the oil supply, and after every 25 hours of use, you should change the oil.

When gas problems occur, the carburetor is affected as the fuel lines inside the carburetor will gradually choke off the fuel flowing to it, which results in your mower stalling. To address this problem, remove the carburetor, disassemble it, clean it, and reinstall it.

If you notice your lawn mower stall when it is hot, a cooling problem might be present. This is because the engine cannot release the heated gasses that come from internal combustion. There is a high probability that too much pressure or heat has already built up in the engine.

To prevent this from happening, clean the air filter after every eight hours, and clean the muffler after every 60 hours of usage. However, try to replace it if either of them is too dirty.

The fuel tank cap has a small vent hole that allows it to keep the proper pressure. A vapor lock occurs when the fuel tank cap is dirty, triggering the engine to stall because of too much heat inside. Get rid of the vapor lock by cleaning or replacing the fuel cap.

How Can You Repair a Lawn Mower That Runs for 30 Minutes Then Dies?

You can repair a lawn mower that runs for 30 minutes then dies by replacing a spark plug, dirty air filter, or carburetor etc.

These problems are easy to repair, and the solutions here will make your mower run again properly in no time.

– Replace the Spark Plug

To be certain that you have a worn spark plug, try to replace the current one and do a test run. If you are certain that the bad spark plug is causing your lawn mower to die, the only thing you can do is replace it as well. Unfortunately, a bad mower spark plug cannot be salvaged at all, but luckily, spark plugs are inexpensive and easy to attach to the mower. Follow these steps:

Start by removing the plug wire. Using a socket wrench, remove the old spark plug. Do not install the new spark plug yet, ensure first that you set a gap between the two electrodes, and use a feller gauge or a gapping tool. Once it is set, you can now install the spark plug and attach it firmly using a socket wrench.

You can try to use the Champion spark plug, Briggs Stratton spark plug 5092k, e3.20 spark plug, or Briggs Stratton spark plug 5095k. These spark plugs are available online.

The last step is to replace the spark plug wire with a new one. Take note that your spark plug should be replaced at least once a year to avoid this issue again.

– Replace the Gas Cap

To diagnose a faulty gas cap, turn over the engine and mow your lawn. When it dies while you are using it, remove the gas cap and put it back again to allow the air back inside the fuel tank so the fuel can flow properly again.

If you can restart the engine and the mower continues to run, then you are certain that you have a faulty gas cap. In this case, you simply need to replace your faulty gas cap with a new one, and your lawn mower is good to go.

– Replace the Air Filter

To prevent dirt and debris from making their way into the engine, check your air filter. If it is dirty, give it a good cleaning. However, if it is unsalvageable, you might want to replace it instead. Keep in mind that a lawn mower’s air filter should be replaced at least every three months to keep your mower’s engine running smoothly. Here are the steps needed to clean your mower air filter:

Prepare the tools needed, such as safety gloves, cleaning rags, replacement filter, engine oil, liquid detergent, and a wash bin or garden faucet. Once you gather all the materials, start by stopping and letting your mower cool down.

Disconnect the spark plug, and remove the air filter cover. Next, screw off the mower’s covering over the air filter. Now, you can remove and assess the air filter.

If you have a paper filter, tap it gently to remove the loose dirt. However, if a large amount of dirt is covering it, it may be best to replace it. If you have a foam filter, you can clean it by washing it in the sink using a liquid detergent and rinsing it with water from a garden faucet.

After doing that, squeeze and dry it for about an hour, and then proceed with oiling. Put oil using your hands, and apply it to the foam filter evenly. Lastly, clean the air filter fitting using a cleaning rag, and reinstall the air filter and the air filter cover as well. Now, you can reconnect the spark plug and test run your mower.

– Repair the Carburetor

In case you are certain that you are having a malfunctioning or clogged carburetor and you are not familiar with it, it is best to seek professional help.

Frequently Asked Questions

– When Should You Call a Professional if Your Mower Keeps Dying?

You should get a professional in to look at your mower that keeps dying if you have tried all the above steps and still don’t have a good outcome. There are more serious possibilities and you won’t be able to solve all possible problems yourself.

– What Major Reasons Are There for a Mower Dying?

The major reasons for a mower dying are a worn out carburetor – if it’s more than dirty you may need to replace, faulty choke – this is a job for the professional, gas tank or gas line blockage – it takes a trained eye to identify and fix this issue.


A lawn mower that dies while in use is caused by numerous problems, but it also can be solved with just a few steps. For you to easily recall the important things, we have listed the significant points.

  • A lawn mower that dies while in use is typically triggered by heat or pressure that has accumulated in the engine.
  • Make sure that you have enough gas and oil supply before using your lawn mower.
  • Remember that the airflow in the engine matters.
  • Check that every nook and cranny of your mower is clean.
  • Replace parts following the recommended schedule.

Your lawn mower that runs for 30 minutes then dies can be really alarming, but we are confident that after reading this article, you can now consider any of these issues an easy fix.

Lawn Mower Stalls When Tilted – What To Do?

When mowing your lawn using a mower, you could run into the problem where the mower won’t start after it has been tilted. When users tilt lawn mowers to replace blades or do some other maintenance, it is normal for the mowers to cease working. If you are facing this problem, there is no need to panic as we have consulted with experts for solutions, and here is what they have to say.

Check if your lawnmower suddenly stops working when you’re trying to tilt it. If the carburetor runs low on fuel or air, you’ll have to do some cleaning. If you notice that the mower only stalls when the gas tank is tilted, you may need to move or replace the gas line in the tank.

Keep reading to learn more about other problems that might make your mower not work when tilted and how you can stop it from stalling.

Why Does My Lawn Mower Stall When Tilted?

Once in a while, a lawnmower will start and run for a short period and then stop when tilted. For your benefit, you need to understand the potential sources of the problem and the alternative solutions to try. Here are some of the causes.

Air Filter Problem

The carburetor’s breather tube has oil in it. Oil can soak into the air filter and cause the lawnmower to not start after tilting or running full of fuel. Because of this, the lawnmower may be emitting black smoke.

Because you can’t tilt the lawnmower, the air filter is facing downwards instead of upright. When tilting the mower, ensure the air filter always faces upward. Because the air filter has become saturated with water, there is nowhere for the air to enter; hence the mower will not start. When this happens, you can change the filter in the mower.

Malfunctioning Fuel Cap

The lawn mower’s fuel tank cover is called a fuel cap. Air cannot enter the gasoline tank if it is not properly vented. For the tank to drain properly, the gap it leaves must be filled with air.

Vacuums are created when the gas stops flowing because no air can fill them. To determine if the gasoline cap is working properly, fill the gas tank and reinstall the cap. Then you will need to prepare a bucket and unhook the fuel line from the fuel tank.

Immediately after the gasoline line is disconnected, the gas will begin to flow into the bucket. Not venting the fuel cap will cause the gas to slow down or stop before emptying the tank.

When you take off the cap, you should check the gas level inside, and you should also observe whether or not extra gas comes out when you do this. Remove the old fuel cap and replace it with a new one.

Carburetor Issues

For those of you who have a lawn, you’re undoubtedly familiar with the use of a lawnmower. It is simple to operate and requires little upkeep. But even with regular maintenance, one issue many people run across is figuring out how to fix it when the lawn mower doesn’t start after it has been tilted.

Carburetor problems are the most typical reason a lawn mower fails to start. Fuel leaking from the carburetor could cause engine and air filter problems.

The lawn mower would not start when it was tilted because it was flooded. It is also possible that something has become lodged in the lawn mower’s carburetor, which keeps it from starting after its use.

At this time, the exhaust from the lawnmower is beginning to reach quite high temperatures. The noise that the lawnmower makes will then be significantly more unpleasant. You can resolve this issue by allowing the carburetor to dry out on its own or replacing it.

Faulty Spark Plug

Spark plugs are essential in all engines. There is no combustion in the engine if the spark plug isn’t operating, and that’s what keeps it running. Remove the spark plug wire to inspect the spark plugs.

Remove the spark plug by unscrewing it using a spark plug tool. Simply by looking, you can tell if the spark plug has been damaged. If the porcelain insulator or electrode is broken or damaged, a replacement spark plug is necessary.

After ensuring the spark plug is undamaged, you can retest its operation by reattaching the spark plug wire and starting the mower. A strong blue spark should appear if the spark plug is functioning properly. Replace it if necessary.

How Do I Stop My Lawnmower From Stalling?

It would be best if you inspected your lawnmower every year to keep it running smoothly and extend its lifespan. Your lawn mower’s oil, spark plugs, and air filter should be changed periodically.

It is best to consult your owner’s manual for exact instructions for your model. Make sure you don’t cut corners on these maintenance activities to keep your mower running smoothly and free of issues.

Can a Bad Battery Case a Lawn Mower to Stall?

Yes, it can. Battery-powered wireless electric lawn mowers require a power source to recharge their lithium batteries. If your battery is completely dead, you’ll need to plug it in and let it recharge for two to three hours before using it again. Then, you’ll be able to mow your lawn.

You can get a new one for those whose lithium battery has failed and can no longer be charged in their lawnmower. A few electric lawnmower manufacturers sell battery replacements on their websites. Check out this MMG Lithium ion sealed battery on Amazon.

Why Does My Lawn Tractor Stall When Mowing Uphill?

There are many reasons your lawnmower could stall while mowing uphill, but the most common is that it doesn’t have enough power to get the job done.

Another possible reason for this to happen is due to engine problems. Also, old or tainted fuel can build up in the engine of a lawn mower if it isn’t used for an extended length of time or if gas isn’t added regularly.

Should a Lawn Mower Fuel Filter be Full?

It is important to ensure that the fuel filter on your lawnmower is full to stop air from getting into the combustion chamber through the fuel line.

If air is allowed to pass through the fuel filter, the lawnmower’s engine will erroneously burn the fuel, resulting in overheating and smoke. You will need to bleed the line to remove surplus air from the fuel filter.

Why is My Riding Mower Losing Power?

Clogged air filters, filthy spark plugs, clogged carburetors, dull blades, and worn-out or tainted gas are the most typical reasons for the power loss of riding lawn mowers. Other potential causes include unclean gas and blocked fuel filters.

Is It Okay to Hose Down a Lawn Mower?

After each usage, metal parts can be eaten by decomposing grass if not cleaned thoroughly. Using a hose to clean up your lawnmower is okay, but you should never use a pressure washer or saturate the engine with water.

Why Does My Lawn Mower Backfire While Running?

If the gas in the lawn mower combustion chamber backfires, you’ll hear a loud explosion since the gas was ignited in a place where it wasn’t supposed to be. Starting, running, or shutting off the lawnmower all have the potential to result in this.

An incorrectly adjusted carburetor or a sheared flywheel key can cause a lawnmower engine to backfire. Other typical causes include abruptly shutting down the mower’s engine or using the wrong type of gasoline.

Will The Riding Mower Run Without Battery?

Yes, it will. The engine of riding lawnmowers is started with a battery contained within the mower. If your battery dies, you’ll need to jumpstart your engine to get your mower started again.

In addition, there must be sufficient charge in the battery for it to be able to deliver a strong spark to the spark plug. If it does not, the engine will either operate roughly or not. If your battery is old and seems to have died fast, it is probably advisable to replace it rather than try to revive it.

lawn, mower, keeps, stopping, runs, minutes

You should make an effort to recharge your battery before you decide to replace it, even if doing so is likely to take some time. If you need to mow your lawn immediately and can’t wait for the battery on your lawnmower to charge, you might want to try jumpstarting your lawnmower.

To Wrap Up

The most important thing to remember while inspecting your lawn mower is to be thorough. Keep an eye out for any malfunction that can be readily fixed. A well-maintained lawn mower has a far longer lifespan and is less likely to develop problems in the future if you give it regular attention and maintenance.

For more on garden equipment, check out these interesting posts:

Reasons Why Your Lawn Mower Starts Then Dies Right Away?

Every lawn owner has had trouble with their mower at some point. One of the most common problems is that the lawn mower starts then dies right away. It has an easy fix. So, if you’re one of those lawn owners who’s been going mad over this problem can finally relax.

Whether you use a single or a twin-cylinder engine, it seems like they all have the same problem with starting up and shutting down at some point in their lives.

Reasons Why your Mower Starts then Dies Right Away:

Poor gasoline, too little or too much oil, a clogged carburetor, a clogged air filter, poor ignition oil, a poor fuel cap, a plugged fuel line, a clogged cooling system, or a dirty filthy plug can all cause your lawn mower to start and then die right away.

Your Lawn Mower Doesn’t have Gas.

Surely you know that a gas-powered mower needs gas to start. So, before you start panicking, check the gas tank. If it’s almost empty or fully empty, then fill it up. If you see that the fuel gauge isn’t working, then you had a gas leak. Another reason can be that you just forgot to put gas in your lawn mower. Most people do not remember to check if it’s running out of petrol.

Old or Bad Fuel in your Lawn Mower

If the fuel in your lawn mower is old or bad, it could stop working after it has been used. Most gasoline only lasts a month before it breaks down and stops working. Since the chemicals that are applied to today’s gasoline start to break down, the mower starts losing its capacity to run hot and well.

Most of the produced gasoline nowadays has ethanol mixed in it. Fuels that have ethanol soak up water from the atmosphere. As a result, the fuel system could be clogged up if water evaporates and leaves a residue within the fuel tank.

A Plugged Air Filter

Sometimes you’ll see that you have tried looking for the problem everywhere but cannot find it. Most likely it’s your lawn mower’s air filter. When a lawn mower’s air filter gets clogged, it stops working in the middle of the work.

Clogged Fuel Filter

If there is dirty, old, or polluted gas in your mower’s tank, the gasoline filter could get clogged. This stops enough fuel from getting to your engine so that it can keep running.

The Lawn Mower’s Fuel Line is Blocked

Old gasoline can leave oil and sticky deposits in the fuel system, which can make them hard to move. Also, gasoline lines can get pinched or kinked. The lawn mower that you use will die because it doesn’t have enough gas.

The Fuel Pump on Your Lawn Mower Broke

If your lawn mower’s gas tank is smaller than your mower’s carburetor, your mowing machine will have a fuel system that sends fuel to the carburetor to help with fuel flow. Most riding lawnmowers now have fuel systems, but most push lawn mowing machines do not.

Over time, fuel could cause the mowing pump seams to break. If your pump starts spilling fuel, you could tell it’s damaged or broken. but it’s hard to tell if there’s damage on the inside, you’ll have to evaluate it to verify that it works.

Your Lawn Mower’s Carburetor Might be Dirty

If your lawn mower stops in the middle, then maybe your mower’s carburetor is clogged up. Your mower’s carburetor is meant to control how much air is mixed with the right fuel amount to make combustion happen.

Your Lawn Mower’s Crankcase has an Excess Level of Oil

If your lawn mower has an excessive amount of engine oil, it might not work well and shut down in the end. If there is an excessive level of oil in the engine, it won’t be able to pull in clean air, and the smoke will clog up your lawn mower’s air filter.

So, the engine might pull oil and air from its crankcase, which could clog the air pump. If there isn’t enough air, the mower might stop working in the middle.

Low Oil Level in Lawnmower

Oil is for greasing the parts inside the engine. When there isn’t sufficient oil, friction builds up, and heat from it stops the mower. Such a high temperature can thicken and melt the engine parts.

A Broken or Clogged Spark Plug

Your engine can stop running if the spark plug is clogged. It makes enough spark to get your mower going, however, it might not be enough to keep it running. Test how good your spark plugs are. If the wire(s) to the spark plug(s) seem to be loose or the placement is wrong, your mower may have trouble starting and running sometimes.

Wrong Placement of the Mower’s Choke

Almost all lawnmowers have a part called a choke. While your lawn mower’s engine is heating up, the choke’s job is to stop air from going into the engine is heating up, a choke is used to stop air from going into the fuel tank so that more fuel can get in.

The choke on a lawn mower is used to start an engine that is cold. If you leave the choke on after starting your mower, the engine gets too much gas and not enough air, which shuts it off.

Your Lawnmower’s Fuel Cap Might be Clogged or Broken.

If the fuel cap is broken or you have a clogged vent, it’s only normal for your engine to die because it doesn’t get enough fuel. If the cap won’t let the air out, a vacuum is supposed to be formed in the tank, making it impossible for fuel to get in.

Faulty Lgnition Coil

When a lawnmower gets hot, ignition coil wires come apart and cause a short. Whenever this happens, your mower’s spark plugs can’t get enough voltage to make a spark. This could make your mower stop working after some time.

Blocked or Broken Cooling System

Grass and mud damage the cooling fins. Once this happens, the fins can’t keep the engine block cool as it cannot move air around it. If this happens, your mower might get too hot and stop working while cutting the grass.

A Useless Lawn Mower Deck

When there is a lot of grass and other stuff stuck on the mower deck, your engine will start working harder. When the blades turn through a great bunch of debris, they put more strain on your engine which can cause your mower to stop working in the middle.

Maintaining a beautiful lawn can be a daunting task, especially if you lack the appropriate know-how and tools to handle the challenges that may crop up. Fortunately, LawnAsk is here to offer you an all-encompassing resource that covers everything you need to know about lawn care.

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Riding Mower Keeps Shutting Off

I have a Poulan 15.5 38in riding mower. It will start and run for a few minutes and then shut off. Then it will not start until it cools down. I have cleaned the carburetor, replaced plug, and cleaned the air filter. The carburetor is overflowing with fuel.

I have taken the switch off of the fuel bowl and hooked it up to the harness and the plunger comes down when I turn the switch on, but when I turn it off it does not come up. Is that the problem?


The carburetor isn’t suppose to be holding that much fluid. I asked my husband about this problem and he thinks something is screwed up with the carburetor, like the float that is suppose to regulate amount of fuel.

The coil is probally no good. When coil cools off, it will start again, then when it is hot again, it will shut off.


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Question: Huskee Lawn Tractor Keeps Shutting Off?

It’s my first time on here and I have read some other Комментарии и мнения владельцев on lawn tractors shutting off after about 10 minutes of cutting. I have a LT 4200 lawn tractor that is running and cutting for about 10 minutes then just shuts off. After it shuts off I try cranking it again and after about three tries at cranking I can hear that start which to me sounds like it’s not getting enough juice from the battery.

The engine is a Powermore 420 cc. Does this particular engine run off the battery after it is cranked? I don’t believe it does, but I am not good on small engine diagnostics.


I would clean the carburetor first and see what happens.

If you have left gas in your engine after use this will cause a gunk build up in the engine and gas. It appears that the gunk has entered into your carburetor now. This needs to be cleaned. Your battery is draining because of trying to start this mower several times.

lawn, mower, keeps, stopping, runs, minutes

I would make sure your battery is fully charged and clean your gas tank, remove all gas and then clean the carburetor.

lawn, mower, keeps, stopping, runs, minutes

I had one do this turned out to be the switch under the seat, I just cleaned it and now it works fine.

Cleaning your mower carburetor and removing all gas from your tank/mower sound easy. right??Well if, as you say, you may not be very good on small engine diagnostics then either of these tasks may not be very easy for you. Note: Huskee mowers are made by MTD for Tractor Supply so most likely you can call your local Sears Service Center for help or for any parts you need (at least as a comparison price).

Check the coil: may need replacing. When the coil cools off, it will start again, then when it is hot again, it will shut off. Spray carburetor cleaner in the carburetor.Old or Bad GasolineThe carburetor might be clogged. 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. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isnt effective, rebuild or replace the entire carburetor. Check videos on YouTube for repairing the carburetor for your mower (you will need a complete rebuild kit).

Old or Bad Gasolineremove all fuel. easiest way is with a hand-powered siphon pump.Check videos on YouTube for your mower.

Fuel CapAs fuel is consumed by the engine, the level in the fuel tank lowers. To make up for this, the fuel cap uses a small vent to allow air to enter the tank. If the fuel cap vent is clogged, air wont be able to enter the tank and a vacuum or vapor lock will occur. This stops the flow of fuel to the carburetor causing the engine to stall. To determine if the fuel cap vent is clogged, try slightly loosening the cap and then starting the engine. If loosening the fuel cap allows the engine to stay running it is likely clogged and will need to be replaced.Spark PlugInspect the spark plug for signs of wear or damage. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, replace the spark plug. Unscrew the plug and see if there is carbon residue or debris around the electrode. If so, you can clean it with an old toothbrush. However, do know that most lawnmower manuals recommend replacing the spark plug every year.

Air filter:The easiest way to check if your problem is related to the air filter is to remove the filter, and then try to start the mower. If it starts right up and the engine sputtering ceases, you’ve found the culprit. Foam air filters can be cleaned with detergent and water. Once the filter is dry, soak it in clean engine oil and put it back in the air filter compartment. Paper air filters should be replaced. In any case, don’t let the engine run very long without an air filter.

Here are some links that might help you to get started.

This is an interesting link to read sometime.