Lawn mower shuts off when hot

May 8, 2020 / Gravely runs for an hour and dies. #2. Sounds like the safety switch on the parking brake. If you try to move with the brake on the engine shuts down. As for the original problem, Blocked tank vent ;- loosen the cap so it can breathe. Blocked tank outlet ;- pull the fuel line off before the pump & blow backwards up the line to ...

Reasons a Kubota Zero Turn Starts, Stalls, and Dies. 1. Bad or Old Fuel. When you begin having problems with your mower and it begins running sluggishly and dies, old fuel is often the underlying problem. This is because gas can begin to break down and become less effective as soon as a month after purchase.Why does my lawn mower shut off after a few minutes? The most frequent causes of lawn mowers that run for 30 minutes before dying are faulty spark plugs or ignition coils, obstructed fuel delivery, and issues with the air supply. Although many parts are involved, the spark plug, carburetor, and fuel cap are the first things you should check.Location. Litchfield, IL. Tractor. JD x595, JD 3529. Seat switch and reverse switch have been bypassed. But it was doing this before they were bypassed. 62" deck 430 hours on the tractor. May 28, 2012 / John Deere X-Series PTO shuts off by itself #4.9 Mar 2022 ... How to Adjust Zero Turn Mower Steering Alignment - John Deere Mower Tracking Explained · Mower starts and then dies - Easy DIY Fix · Lawn Tractor ...The thing is that it's so random and sometimes shuts off within minutes and then sometimes it runs for long periods of time. Sometimes it will crank right back up immediately and sometimes it takes 30 minutes or more. As Rvanwart mentioned, it sometimes backfires when it shuts down, not always. Wouldn't surprise me if the coils are where I end up.John Deere Mower Problems: Riding Mowers, Lawn Tractors & Zero Turns. 1. Won't Start. When your lawn tractor or zero turn won't start, look at items that can cause an air or fuel restriction. Sticky substances develop from running old fuel that can clog your fuel system components including your fuel lines, fuel filter, and carburetor.

However, shutting down can cause it to stop. After a while, it is easily confused with a mower that shuts down after running Husqvarna Lawn Mower Quits When Hot. When it's hot, Husqvarna lawnmowers don't work ... your mower's engine can run hot and shut off. Here's more info about using gasoline correctly, storing it safely, and the ...Running fine until recently. It runs strong for about 10 minutes and shut off like it out of gas. It about 10 minutes it restarts strong and then shut off. This what I did: 1) replaced dirty filter. 2) drain gas and refilled with new gas. 3) checked that the spark plug connection was good. I would welcome any help to figure out what is going on.Lawn Mower Craftsman ZTS 7500. Sit-on-top lawn mower. Zero-turn radius mower, 50" mower deck, hydro transmission. 68 Questions View all . Matt @mattk. ... Did you solve your problem my mower doing the same thing but wen I turn left the PTO comes on turn right it shuts off. Aug 13, 2022 by marvinpowell416.You can find issues such as hot start failures when putting the wrong type of spark plug into your mower. Check the spark plug model number or plug code you require. You must check you have a spark from the plug before replacing it. If you get a good spark, the issue may be something else. A poor spark can be a sign of a worn plug; the gap is ...A Husqvarna lawn mower will not stay running when there is a lack of air, fuel, or spark. A plugged air filter, bad fuel, water in the fuel tank, a bad spark plug, and a faulty ignition coil can cause the mower to stop running. Keep reading for a complete list. Take safety precautions when working with your Husqvarna mower as outlined in your ...Loses Power and Dies. Lawn mowers can experience loss of power when the fuel or air systems are compromised affecting your mower's ability to run. This can include bad fuel, a bad air filter, a dirty carburetor, and clogged fuel lines. Detailed information can be found at: Cub Cadet Starts Then Dies While Mowing.Lawn Mower Loses Speed. If your mower slows noticeably during use, check the blade. Any buildup of dirt and grass clippings can restrict the blade's movement, causing the engine to work harder. Shut off the mower, disconnect the spark plug wire, then turn the mower over. Clean dirt and grass from the blade and underside of the mower deck.Maintaining a well-manicured lawn requires regular mowing, but finding the time and energy to do it yourself can be challenging. That’s where a mobile lawn mower service can come i...

A riding lawn mower may quit when hot because the air filter is plugged; the fuel system is clogged; the oil level is too high or too low; the air isn’t circulating around the engine block; the spark plug is bad; the ignition coil is faulty, or there is debris buildup under the deck.A mower fuel tap is a valve; its function is to allow the operator to control the fuel supply to the carburetor by turning a tap on or off. It's commonly located in the gas line between the gas tank and the carburetor. They're usually plastic, but older mowers may have a metal tap fitted. A fuel tap is also known as a fuel valve, shut-off ...Like with most all mower, Kawasaki engine problems do exist. Though they make a quality product there can be problems with the crankshaft upper seal, ignition coil, anti-tilt switch, fuel filter, and even issues with engine surging. The fixes range from the simple to complete engine replacement. Unfortunately, even Kawasaki engines are not ...X. x500racer Discussion starter. 3 posts · Joined 2014. #1 · Jul 27, 2014. i have a snapper commercial mower with a Kawasaki fh641v engine that quits running when it gets hot. previously thinking it was a fuel problem, I have replaced the fuel pump, lines and filter. I now believe it might be the electric fuel shutoff on the carb getting hot ...A Honda lawn mower may start and then die when bad fuel clogs the fuel system; a plugged air filter or incorrect choke position restricts airflow; a spark plug or coil is bad, or the mower overheats from an incorrect engine oil level or a plugged mower deck. I put together this guide to help you get your Honda mower up and running again.Ego mower shuts off after a few seconds. I was mowing today and about half hour into it, the mower just shut off and the light blinked back and forth between green and yellow. Once it stopped blinking I could start it again and it'd run about 5 seconds, shut off, and blink again. I tried different batteries, everything looks in good shape.

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The fuel shut-off valve is open allowing fuel to flow out of the fuel tank. There is sufficient fresh fuel in the fuel tank. The parking brake is engaged or the bail lever is engaged. The PTO switch is off (riding mower, lawn tractor, and zero turn). The choke is in the closed / on position to start a cold engine. Check for a Fuel ProblemWhen it comes to mowers cutting off when put in gear, the most common culprit is a faulty seat switch. Even when you are in the seat ready to mow, the operator’s presence seat switch detects no rider and immediately kills the engine. Start your inspection there if your mower dies in a similar way to that described above.A Kobalt electric battery lawn mower won't start when it doesn't have sufficient ... When your Kobalt battery gets excessively hot, the mower will shut down. The mower has a protection system that shuts the mower off when the battery gets too hot. ... The mower will shut off when you release the safety bar. 7. Siderails are Not Fully Extended.Ryobi 40v mower cuts out after a few seconds. Starts up just fine, runs fine until I move forward. It cuts out anywhere from 2-10 seconds. Mostly around 2. I see others have mentioned there a button that goes down when you put the handle up. The apparently becomes loose. That is not the issue with mine. I checked to see that the bolts were right.

The gas flow in the system can reverse, due to pressure, hence, causing the gas to leave the carburetor and shutting the engine down. This is often called vapor lock. That is, the engine cannot run the …This translates to a mower that will move poorly and eventually bog down and shut off. Get a rag and wipe the choke and its surrounding linkages making sure to get rid of all sticky residue. For best results, spray carburetor cleaner along the shaft to loosen grit and grime. Once it turns back on, the movement should knock the dirt right off.6. Apr 3, 2020 / Craftsman starts then shuts off. #1. Hey all, Sears Craftsman mower has been running great for years and I treat it well. I was mowing fine then the motor turned off. Each time I try to start, it turns over fine runs for 2 to 3 seconds then shuts off. Figured a fuel issue so I pulled the carburetor, disassembled it, carefully ...15 Sept 2013 ... Sometimes , a certain weight shift while mowing will cause the mower pto to shut down due to the seat switch contact unloading . See if you can ...Solution: You can access this sensor by lifting up the seat on most riding mower models. The first thing would be to pull it out of the connection and then blow on it. It could be dust or dirt causing the problem. Plug it back in and see if that fixes the issue. If it doesn’t, you might need to replace this switch.7 May 2021 ... Is your mower not shutting off? Well in this video, I will be showing you how to fix a lawn mower that won't shut off when you release the ...This is Why Your John Deere Lawn Mower Runs Rough & Sputters. 1. Plugged Air Filter. The air filter can become plugged with grass clipping, dirt, and other debris when it isn’t regularly cleaned to keep it in good condition. It offers protection to the engine by only allowing clean air to pass through it and into the engine.8 Sept 2023 ... Stalling lawnmowers are fairly common. That being said, one issue is way more common than any of the others. If your lawnmower is starting and ...Blades (48"): M145476 https://amzn.to/3MLg8UMPrimary deck belt (PTO to deck): M143019 (cogged or V belt works) https://amzn.to/3WnvQZqSecondary deck belt (bl...A Troy-Bilt lawn mower may die because there is a fuel or air restriction that prevents your mower from running. An insufficient engine oil level, blocked cooling fins, and a clogged mower deck can cause the mower to overheat and shut down. There are many things that can cause your Troy-Bilt mower to die.By: Author John Cunningham. Published: 2019/06/10 at 8:31 pm When a mower is working correctly, releasing the bail lever turns off the mower. If your mower doesn't have a bail lever, then the throttle lever doubles as the on-off control.Loud and unruly noises when shutting down your lawn mower engine is not normal. Bangs or pops as your engine quits running are an indication that something is amiss with the engine. The cause can be a mechanical problem or incorrect operating procedure. It is important to learn and remedy the cause of your lawnmower engine backfires.

To turn off an electric lawn mower, release the throttle and press the stop button, usually located on the handle or deck of the mower. Always ensure the mower is completely stopped and unplugged before performing any maintenance or leaving it unattended.

Originally Posted By: mez My lawn tractor engine doesn't shut off immediately. It sputter and then shut off. Any ideas? Is this a newer machine? I've experienced this phenomena with several late model, single cylinder and V-twin equipped riding mowers. Most notably was my Cub Cadet 2544 rider.This OEM Briggs & Stratton fuel shut-off valve ensures a proper fit and performance to maintain the life of your Briggs & Stratton engine. With this lawn mower fuel shut-off valve for Quantum and other select engine models, your push mower will be ready to keep your yard looking great all summer. Includes 698183 (1) lawn mower fuel shut-off valveMessages. 24,705. Sep 21, 2017 / X500 fuel solenoid/ fuel shut off causing engine to die? #2. As per the reply in a different sub section, go to your dealer and beg borrow or buy a bowl bolt. Substitute the bowl bolt for the solenoid and see what happens. You can also get an in line red neon tube spark tester.This is referred to as the "Power Take Off." The PTO is a device that activates the blades under the mower deck. The PTO is powered by a 12-volt system. The electric clutch is controlled by a switch on the lawn mower's dashboard. Question: How much to spend on average to buy a lawnmower? Answer: A general lawnmower costs an average of ...The most common Troy-Bilt lawn mower problems are: Troy-Bilt won’t start. Troy-Bilt dies while mowing. Troy-Bilt is smoking. Troy-Bilt has a weak hydrostatic transmission. Troy-Bilt won’t drive straight or steer correctly. Troy-Bilt won’t move. Troy-Bilt is shaking or vibrating. Troy-Bilt is cutting uneven.ducky1. 256 posts · Joined 2002. #16 · Nov 25, 2004. Sounds to me like something rubbing on shut down. Check the engine shroud around flywheel and also around blade. Look for a shiny place where blade might have been rubbing the deck. Blades flexes somewhat when running so spot may be slightly above or below blade path.Work the mower in the usual way until it stalls, then go ahead and follow these steps: Remove gas cap. Wait one minute. Attempt start. MacGyver didn’t get it right every time. If the mower starts and runs as normal, then your gas cap is faulty; go ahead and replace it. If, on the other hand, the mower still won’t start, you’ll need to ...Nov 29, 2014. Threads. 64. Messages. 24,705. Apr 28, 2020 / Cub Cadet PTO keeps shutting off. #2. First guess would be the reverse switch has come loose & it is cutting out because the MIR cut out is being activated. Got a dozen or so 2000 series garden tractors in the service run and the MIR switch on all of them has given me endless grief .Blades (48"): M145476 https://amzn.to/3MLg8UMPrimary deck belt (PTO to deck): M143019 (cogged or V belt works) https://amzn.to/3WnvQZqSecondary deck belt (bl...

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If the ignition coil is bad it will melt further resulting in the engine overheating. Eventually, the Briggs and Startton riding mower shuts off when hot. Now, let’s learn what are the possible solutions to resolve such issues on your mower. 6 Fixes To Use When Briggs And Stratton Lawn Mower Overheats And Dies 1.3. Compression. Piston rings, valves and cylinder head gaskets all work together to create compression. If there is any problem here, then the engine won't run. These three components lead to common problems, and by following the "gas shot test" below, you will get more answers to why your Toro Recycler 22 won't start.Jan 22, 2018 / Husqvarna YTH 24V48LS engine shut off when blades engaged. #1. I have a Husqvarna YTH24V48LS lawn mower, engine starts runs all right, but every time when I pull up the blades engage switch, the engine shut off in a second, I checked the seat safety switch, off the four brass terminals, the two of most out side and the two of ...Joined. Mar 7, 2013. Threads. 34. Messages. 466. Mar 22, 2013 / john deere x320. reverse shut off safety. #3. I have not tried anything because I dont want to mess something else up by just unplugging the switch unless somebody says it wont hurt nothing, thanks.May 5, 2010. Threads. 26. Messages. 5,447. Oct 16, 2011 / Hustler Super Z dies after getting hot..help! #2. Check the fuel line routing ... when he replaced it, if it gets any place that heat gets to it, you can get a vapor lock easily... check for heat shields missing or bent, and for any change in the original layout...1,791. Aug 2, 2017 / Mower won't restart when hot. #3. Judy H said: Hi, I have a 3-year-old Honda GCV160 model. I've never had a problem with it until this summer. Once I stop the mower, it won't restart. Once it has cooled down sufficiently, it will start right up again. My neighbor thinks it might need to have the gaskets replaced.Nov 29, 2014. Threads. 64. Messages. 24,705. Apr 28, 2020 / Cub Cadet PTO keeps shutting off. #2. First guess would be the reverse switch has come loose & it is cutting out because the MIR cut out is being activated. Got a dozen or so 2000 series garden tractors in the service run and the MIR switch on all of them has given me endless grief .The starter motor turns over the engine. Replace a bad starter motor. Ferris Zero-Turn Mower Clicks & Won't Turn Over. 11. Blades Won't Engage or Turn On Problems. The mower blades won't engage on a zero turn when the PTO switch is faulty, the battery is weak, a safety switch failed or the clutch is bad. ….

5. Jun 11, 2014 / HR 215 will not shut off. #1. Hi all, I have a 1991 Honda HR 215 lawn mower that has been a fabulous machine. Unfortunately it currently will not shut off using the normal throttle lever control. The cable appears to move fine but a control arm with a spring on will not go all the way forward to shut the engine off completely ...1. Jun 27, 2014 / 19 hp kawasaki engine stops running after it warms up. #3. Have had the same issues. It could be electrical, but I would try these fuel issues first [there cheaper, and work more times than not]. loosen fuel cap, replace fuel filter, blow air through fuel supply line [before filter] back into fuel tank, remove fuel shut off ...This rotary-blade, walk-behind lawn mower is intended to be used by residential homeowners. It is designed primarily for cutting grass on well-maintained lawns on residential properties. ... Stop the machine and shut off the engine before servicing, fueling, or unclogging the machine. ... If the engine has been running the muffler will be hot ...Here are the steps to test your electric lawn mower power switch: Disconnect your lawn mower power source. Remove the power switch & power lever housing cover. Remove the power switch from its mounting position. Manually press and release the switch button a few times.The symptoms of a bad fuel solenoid include the engine stopping or suddenly, a switch that trips, and an engine that stalls. Also, it may disable the fuel pump leading to a no-start condition that makes it hard for the engine to start. 1. Engine Shutting Off. The mower engine runs on fuel.Feb 20, 2022 · My corded Kobalt 21 inch electric mower shuts off when hot, or under heavy load sometimes. The reason for this is the thermal switch that shuts off the elect... 4,655. Apr 28, 2018 / Toro zero turn just shut down like light switch turned off. #4. 1) Remove spark plug, put it back into plug wire, hold plug metal to touch engine to ground it, have someone crank engine a couple rotations, watch spark plug end to see if it sparks. Should see a nice spark there.55. Messages. 14,769. Jun 4, 2018 / Toro personal pace mower won't restart after engine is hot. #5. Next time you have to restar your mower hot, check to see if the choke is still closed. You have an auto choke system and the choke may not be staying open when hot. Second, if the choke butterfly is open, check for spark, the coil may have a hot ... Lawn mower shuts off when hot, This rotary-blade, walk-behind lawn mower is intended to be used by residential homeowners. It is designed primarily for cutting grass on well-maintained lawns on residential properties. ... Stop the machine and shut off the engine before servicing, fueling, or unclogging the machine. ... If the engine has been running the muffler will be hot ..., 4,725. Aug 30, 2015 / Fuel shut off solenoid. #3. Testing the carb solenoid is easy, just turn on the key & listen near carb for a click that would be the solenoid opening the plug to main jet. Then turning key off should have an audible click as well. But you would resally need to be close & listen hard., Conclusion. To review, if your tractor is experiencing symptoms where it starts fine, but then suddenly shuts off, you most likely have a fuel starvation issue caused by lack of air or lack of fuel to the engine. This can be caused by several variables within the fuel system itself, but it can also be caused by an airflow issue., John Deere shuts off when brake is released. JD F525 . I got thos mower out after sitting for a year. New gas and started rite up. I engaged the PTO to check the cut and all was well. I turned off the mower and when I restarted and attempted to engage the PTO I was dead. Like a blown fuse., My mower would quit after 10-15 minutes of running. It all started during early spring maintenance when I changed the spark plug, oil, oil filter, FUEL FILTER, and air filter. After all that it started to stall. I tried suggestions I found on the internet such as replacing the $60 ignition module., Had an ignition coil go bad on my Husqvarna mower. Swapped it with one from a spare motor., ducky1. 256 posts · Joined 2002. #16 · Nov 25, 2004. Sounds to me like something rubbing on shut down. Check the engine shroud around flywheel and also around blade. Look for a shiny place where blade might have been rubbing the deck. Blades flexes somewhat when running so spot may be slightly above or below blade path., A Kobalt electric battery lawn mower won't start when it doesn't have sufficient ... When your Kobalt battery gets excessively hot, the mower will shut down. The mower has a protection system that shuts the mower off when the battery gets too hot. ... The mower will shut off when you release the safety bar. 7. Siderails are Not Fully Extended., Dec 6, 2021 · So let’s go over these in detail. 1. Obstructed Fuel Cap. This is by far the most overlooked reason why your mower heats up. An obstructed fuel cap may result in venting failure. As a result, fuel won’t enter into the carburetor. This causes the engine to not receive any fuel and shut off due to overheating. , 444 posts · Joined 2008. #1 · Aug 6, 2013. The PTO on my JD Ztrak 830A has just started shutting down while I'm mowing. It's not too hot. mid-80's lately, and if I shut down the engine, then re-start, it will work again. The first time it happened, I had been mowing for about 1/2 hr and I saw no indicators on the status panel, it just shut off., Cooling. When the engine can't vent the heated gasses from the internal combustion or take cool air in for the next stage of combustion, stalling can occur. Air comes in through the air filter and goes out through the muffler. The air filter gets dirty quickly, so clean it every eight hours of operation. Clean the muffler after every 60 hours ..., American Lawn Mower Company 1204-14 14-Inch 4-Blade Push Reel Lawn Mower, Red. 4-blade reel mower with a cutting width of 14" and durable 8.5" polymer wheels for maximum maneuverability. Lightweight at only 19 pounds. Reel Lawn Mowers are great for small lawns..Deluxe hand-reel mower ideal for most turf grasses., 21"push mower/w bagger Stihl KM 90 w/trimmer,tiller, and hedge trimmer Husquvarna BT130 MTD 3.5 HP edger AgraFab 17 cb ft trailer Precise-Fit Areator Random dethacher Precise-Fit lawn sweeper "Never Give Up! Never Surrender!" ... Put a new muffler on and never shut off again in the heat. 2006 Chevy 2500HD 4x4 1996 GMC 2500 4x4 Toro Z500 w ..., If you’re in the market for a new push lawn mower, finding the best price is likely at the top of your priority list. With so many options available, it can be overwhelming to navi..., I get asked about this all the time, figured I would make a video explaining what is happening and what can be done to fix it, I have videos on my channel on..., A Snapper lawn mower may start and then die when old fuel has clogged the fuel system restricting fuel to the engine. A plugged air filter, insufficient oil level, plugged mower deck, bad spark plug or faulty charging system can also can a Snapper mower to shut down after running. Keep reading for a complete list of items that can cause your ..., Mar 25, 2023 · If the ignition coil is bad it will melt further resulting in the engine overheating. Eventually, the Briggs and Startton riding mower shuts off when hot. Now, let’s learn what are the possible solutions to resolve such issues on your mower. 6 Fixes To Use When Briggs And Stratton Lawn Mower Overheats And Dies 1. , 10,296. Jun 25, 2020 / Won't shut off! #2. With the ECB cable released that switch should be reading near zero and not 80 ohms. I believe you have dirty contacts in the switch. To test if it is the switch at the brake simply add a test wire to wire from the coil and ground it to see if the engine will shut off when running., Several factors can cause a GreenWorks lawn mower to shut off unexpectedly. Here are some common reasons: Clogged Air Filter: A dirty or clogged air filter can restrict airflow to the engine, causing it to stall. Regularly clean or replace the air filter according to the manufacturer's recommendations., Shut off the fuel supply using the fuel shut-off valve or a clamp to pinch the fuel line to stop the flow. Remove the fuel line from the carburetor and place it in a container to collect fuel. Start the mower and watch the flow coming out of the line into the container. You should see a steady or pulsating flow of fuel., 1. Bad, Old, or Wrong Fuel. Running good fresh fuel through your riding mower is best. Gasoline can begin to break down and become less effective as soon as 30 days after purchase. Ethanol in your gasoline along with the moisture it attracts can gum up the fuel system causing clogs. When this happens, your lawn mower starts then dies. , If your lawnmower start and runs for a couple of minutes then stops, it could be a venting issue! I show you a quick, easy, fast way to check it.Click here ..., Black smoke may indicate that the mower is "running rich," or burning too much gasoline. Your lawn mower's carburetor regulates the ratio of gasoline to air mixture. If the carburetor isn ..., When this happens, air won't be able to pass into the carburetor. This prevents the downward movement of gas and will cause your lawnmower to stall. To fix this, remove the bowl screw. You can do this by using a ½ inch plug wrench. Be sure to clean the dirt out of the bowl and then out of the screw as well., 12 Apr 2020 ... Step by Step! Today we'll be fixing a Craftsman Lawnmower with a Kohler 149cc engine. The mower will start, but then shut off right away., X. x500racer Discussion starter. 3 posts · Joined 2014. #1 · Jul 27, 2014. i have a snapper commercial mower with a Kawasaki fh641v engine that quits running when it gets hot. previously thinking it was a fuel problem, I have replaced the fuel pump, lines and filter. I now believe it might be the electric fuel shutoff on the carb getting hot ..., With several types of lawn mowers available in the market today, you need to figure out the best one for you. Such options include electric, riding mowers, self-propelled, and gas-..., We would like to show you a description here but the site won’t allow us., Here's why this happens and what you can do: • Dirty Air Filter on Your Lawn Mower: Clean or replace. • Cutting Tall Grass: Raise the cutting height on your lawn mower. • Dirty Spark Plug: Clean or replace. • Build Up of Clippings & Debris: Clean underside of your lawn mower deck as noted above. 4., 24,705. Mar 26, 2023 / John Deere D140 engine shuts off when pto button is engaged. #4. The absolute best thing you can do is to buy the JD technical manual . It is written inplain language, exlains exactly how to do the test, where to do the tests and what the results mean . It costs 1 to 2 hours of shop labour so pays for itself the firt time ..., If your Ryobi lawn mower keeps shutting off, you might have a damaged fuel line. It may not rotate when the line is attached to the mower. If the problem persists, you might need to replace the entire motor. Another common cause of shutting down is a damaged motor. It might be due to a clogged fuel line or improper battery installation., That is definitely dieseling. Several things can cause this: 1) Engine running too hot (check cooling system) 2) Idle too lean (check idle mixture) 3) Excessive carbon buildup in the head (may have to remove head to clean, sometimes running at full throttle at high load and speed for a period will clean it out), Signs that you have a faulty ignition coil are: the engine takes a while before it starts; the lawn mower keeps stalling when it gets hot; you can smell fuel when the lawn mower is running. ... A Husqvarna lawn mower may shut off after starting for various reasons, such as fuel issues, carburetor problems, ignition system faults, air intake ...