Lawn mower turns over then dies

Repeated Stop Start of the Lawn Mower. If the rectifier, motor, and thermal cut-off switch are all ok, then the cause of your electric mower cutting out could be down to repeated starting and stopping of the lawn mower. Every time you start your lawn mower, the motor requires a large current to get the motor spinning.

Lawn mower turns over then dies. Jun 6, 2019 ... Comments164 · Lawn mower engine stutters and dies after 10 minutes of use · Craftsman Mower Starts but Won't Stay Running - FIXED! · FIX an...

Jun 15, 2023 · Press Primer 4 times. Pull start or electric start the machine. Move the choke back to half when the engine starts and turn choke off altogether when the machine is warm. That’s how to start a snowblower, and if your machine fails to start or stay running, then we’ll need to move on and do some diagnosis.

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. 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 ...A Toro lawn mower won’t start when there is a lack of fuel, air, and spark. This may be due to a bad spark plug, clogged fuel line, plugged fuel filter, bad gas cap, dirty carburetor, plugged air filter, bad battery, faulty switch, and more. Keep reading for additional reasons for your Toro starting problem.When a Bad Boy mower starts then dies, it’s often due to fuel system issues. Common problems include bad or old fuel, clogged fuel filters, dirty fuel injectors, and a dirty carburetor. Additional factors like broken cooling fins, too little or too much engine oil can also impede fuel flow, leading to poor performance or sudden mower shutdown. 13. Bad Gas Cap. Your Poulan Pro fuel cap has a vent that allows air to pass through the cap. When this vent is plugged, the mower will die after it starts. A clogged vent will cause the fuel tank to form a vacuum restricting fuel. Solution: Loosen or remove your fuel cap and start your mower. February 25, 2024 | By Steven Stewart. Picture this: it’s a beautiful sunny day, and you’re all set to mow your lawn and enjoy the outdoors. You pull the starter cord of your trusty lawn mower, and it sputters to life with a promising roar. But just as quickly as it starts, it dies.February 25, 2024 | By Steven Stewart. Picture this: it’s a beautiful sunny day, and you’re all set to mow your lawn and enjoy the outdoors. You pull the starter cord of your trusty lawn mower, and it sputters to life with a promising roar. But just as quickly as it starts, it dies.

Bad dampers will cause your mower to jerk to one side when moving forward. Replace with a new damper (s). Tracking adjustment needed on zero-turn or stand-on mower. When one tire is moving faster than the other, your mower can pull to one side. Adjust the speed adjustment bolt to change the rotation speed of the tire.Sep 16, 2023 ... This Cub Cadet with a Kohler Courage engine runs great for 30 seconds! Then it struggles, stalls and dies! Wait a short time, and then it ...Follow along this DIY video to troubleshoot and learn when it's best to service your mower. First step, check the fuel tank to make sure there is enough fuel to operate your snow blower. You should see fuel slosh around. Second step, check the spark plug. A wet plug means there’s fuel going through the fuel system and there may be an issue ...(The Short Answer) If you’ve got a lawn mower that runs for 30 minutes then dies, the most common culprits are: a faulty spark plug or ignition coil, blocked fuel …It's also one of the most common reasons why lawn mowers start to quickly die. When the carburetor becomes dirty or clogged, it cannot balance the air and fuel properly, which causes your engine ...Most Common Solution. 04 - Old or Bad Gasoline. The 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 ...Aug 1, 2021 · Messages. 1,448. Aug 2, 2021 / Cub Cadet / Kawasaki FR730V engine stalls and dies... #5. The first thing I would do is to pull the fuel line off. Separate the fuel line from the inlet side of the fuel filter and drain off some of the gas from the tank. Do this after your machine has been sitting overnight. A John Deere mower turns over but won’t start when it isn’t getting the air, fuel, and spark required for combustion.. A plugged air filter, stuck choke, clogged fuel line, plugged air filter, dirty carburetor, bad fuel pump, clogged fuel tank vent, or dirty spark plug may be the cause of a John Deere mower not starting after turning over.. Always follow the safety …

So, always inspect the cap if your mower is stalling after 5 minutes of use. If you see any visible damage or dirt, follow the process below to keep it functioning –. Step 1: Unscrew the cap by turning it clock or counter-clockwise. Step 2: Add some mild liquid soap or detergent to a bowl of warm water. 7. Jul 16, 2018 / Craftsman Gold 6.75 runs for a few minutes and then stalls issue. #1. Hello, I new here. I’m having an issue with my 6 year old Craftsman push lawn mower with a 190 cc Briggs & Stratton. It all started about 3 months ago when my mower wouldn’t start anymore. I rebuilt the carburetor, changed the spark plug & air filter and ...A John Deere mower turns over but won’t start when it isn’t getting the air, fuel, and spark required for combustion.. A plugged air filter, stuck choke, clogged fuel line, plugged air filter, dirty carburetor, bad fuel pump, clogged fuel tank vent, or dirty spark plug may be the cause of a John Deere mower not starting after turning over.. Always follow the safety …10 posts · Joined 2012. #1 · Jun 14, 2012. I have a Ferris IS3000 ZTR mower that isn't running correctly right now, starts and then dies, it just recently started having issues with it. Lets start with a little back ground on the machine. Purchased it recently, included an aluminum bagging unit. Thing ran great and has 900 hours on it. 13. Bad Gas Cap. Your Poulan Pro fuel cap has a vent that allows air to pass through the cap. When this vent is plugged, the mower will die after it starts. A clogged vent will cause the fuel tank to form a vacuum restricting fuel. Solution: Loosen or remove your fuel cap and start your mower. When a Bad Boy mower starts then dies, it’s often due to fuel system issues. Common problems include bad or old fuel, clogged fuel filters, dirty fuel injectors, and a dirty carburetor. Additional factors like broken cooling fins, too little or too much engine oil can also impede fuel flow, leading to poor performance or sudden mower …

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A push mower may start and then die due to a lack of fuel, air, or spark due to plugged filters, bad fuel, a dirty carburetor, a clogged fuel system, a bad spark plug, or a faulty ignition coil. An insufficient engine oil level and plugged mower deck can also cause a mower to die. I have put together a list of causes that can be the reason your ... Sep 17, 2020 ... Install a stop valve in the fuel line and run your engine after each use until it just dies, which sucks all of the fuel out of the carburetor..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.A Troy-Bilt lawn mower won’t turn over or crank due to a bad battery, loose or corroded wiring and electrical components, faulty ignition switch, bad safety switch, blown fuse, bad starter solenoid, or a bad starter motor. Take safety precautions to prevent injury. If you are uncomfortable or don’t have the skill level to work with the ...01 - Lawn Mower Carburetor. The 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 …

1. Bad Blade Engagement. The blades of your mower or tractor, when poorly engaged, can cause the engine to stop when the PTO runs. This normally happens due to two reasons. Lodged, dulled, or misadjusted blades. Incorrect blade length. Incorrectly routed belt. Bad or broken Blade.4. Jun 6, 2011 / craftsman starts and runs fine, then dies? #1. craftsman riding mower with a 17 hp kohler engine. It starts and runs fine, mows for about 20 minutes then starts to miss. If I keep feathering the throttle it will continue to run, but then there is no throttle control, just wide open. It then eventually dies.If your lawn mower starts, runs briefly, then dies these are the four most common reasons that’s happening in my experience: 1. Dirty carburetor / clogged carburetor bowl 2. Old gasoline that has gone bad 3. Dirty or defective spark plugs 4. Too much oil in your resevoir Below I’ll get into each potential problem, why … See moreThe Bottom Line. If your lawn mower only starts with starting fluid and then dies, it could be due to various issues. These may include clogged air filters, old fuel, improper oil levels, carburetor trouble, or spark plug issues. Finding the causes and applying the methods above will help you keep your machine running smoothly.4. Jun 6, 2011 / craftsman starts and runs fine, then dies? #1. craftsman riding mower with a 17 hp kohler engine. It starts and runs fine, mows for about 20 minutes then starts to miss. If I keep feathering the throttle it will continue to run, but then there is no throttle control, just wide open. It then eventually dies.This type of oil varies from the oil used in cars. A car uses water in a liquid to cool the engine while a riding lawn mower uses air to cool its small engine. Most lawn mower small engine manufacturers recommend using SAE30 or 10W-30 engine oil. You may need to change your oil viscosity to 20W-50 when operating in higher ambient temperatures.When it comes to lawn care, having the right mower is essential. Residential zero turn mowers are a popular choice for many homeowners because they offer superior maneuverability a...14,778. Jul 30, 2019 / Engine starts after priming, then dies in 2-3 seconds. #6. With the engine model you gave us, you have a Tecumseh model TVS90-43504H. This is a 2-cycle engine, which changes a few things, as we were figuring a 4-cycle engine. That’s why I asked for numbers in post 3.

Aug 16, 2023 · The main reasons for why your lawn mower starts with starter fluid then dies are: issues with the carburetor, a clogged air filter, bad or old gas, spark plugs that aren’t firing correctly, and an improper oil level.

1. Dirty Carburetor. 2. Defective Spark Plug. 3. Clogged Air Filter. 4. Choke Is Loose Or Faulty. 5. Too Much Oil In The Mower’s Reservoir. 6. Bad Fuel In The Lawn …When it comes to lawn care, having the right mower is essential. Exmark zero turn mowers are some of the most popular and reliable mowers on the market, but choosing the right one ...Solution. Remove the spark plug from your mower and give it a good clean, if it is still not working when you reattach it to your lawnmower then you might have a damaged plug. In this case, just replace the whole spark plug, doing so should not cost you a lot and save you the hassle of trying to fix it. Spark plugs should be replaced every year ...An Ariens lawn mower may start and then die due to a fuel restriction caused by a dirty carburetor, plugged fuel filter, clogged fuel lines, or a bad fuel cap. A plugged air filter, insufficient oil level, and bad ignition coil can also cause your Ariens mower to start and then die. Keep reading for additional items that can cause a running ...4. Jun 6, 2011 / craftsman starts and runs fine, then dies? #1. craftsman riding mower with a 17 hp kohler engine. It starts and runs fine, mows for about 20 minutes then starts to miss. If I keep feathering the throttle it will continue to run, but then there is no throttle control, just wide open. It then eventually dies.If you notice carbon build-up on the tips of the spark plug, clean it! Use a cloth dipped in rubbing alcohol to cut any oil and carbon. You can scrub the tips with an old toothbrush for a deeper clean. 4. Too much gas or oil. One sign of too much engine oil or fuel is white smoke coming from your mower.Take out the air filter (inspecting it for cleaning or clogs). Then, spray a carburetor cleaner into the hole before taking an air-compressed can to blow into the jets after letting the cleaner sit for at least five minutes. You can also remove the carburetor from the lawn mower to clean and remove clogs from the inner parts if the part needs a ...Apr 7, 2022 · If the problem still isn’t solved, a faulty choke switch could be the problem. Clean it with carburetor spray or replace it entirely. A dirty spark plug is misfiring and needs to be replaced. A ... When your lawn mower starts then dies, it not only delays the completion of your lawn care chores—it can also be kind of embarrassing. Imagine your neighbors glancing over curiously, wondering what on earth is up with you and your problematic mower.Zero turn mowers are a great way to get your lawn looking its best without breaking the bank. They are easy to use, efficient, and can save you time and money. But with so many dif...

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Reasons Your Husqvarna Lawn Mower Dies. 1. Lack of Gas. Everyone knows if you don’t have gas in the tank, your gas-powered lawn mower will not run. However, when you’re in the middle of trying to figure out why your Husqvarna died, you can forget the simple, most obvious item to check: gasoline. 2.Jun 20, 2023 · A fuel cap that has been damaged or isn’t allowing air to enter the fuel tank is a really common cause for a lawn mower that runs for 30 minutes then dies. Make sure that the fuel cap is in good condition and has a vent that works properly. Lastly, take a look at the carburetor. This is where all of the air mixing happens. Step 3. Remove The Fuel Line. Detach the fuel tank from your mower (they usually slide out of place), then use a pair of needle nose pliers to shimmy the fuel line loose. Step 4. Remove And Clean The Jet Screw. The jet that feeds fuel into the carb doubles up as a bolt that holds the bowl in place.When it comes to maintaining a beautifully manicured lawn, having the right equipment can make all the difference. One name that stands out in the industry is Bad Boy, known for th...Primer bulb: This component is bound to wear out and become brittle over time, causing inefficiencies in the suction of gas into the carburetor from the fuel tank. iv. ... Mower starts, then stalls. If your Ariens lawn mower shuts down after running for a while, it could be due to excessive engine oil, a worn-out spark plug, or a misplaced ...May 2, 2022 ... Briggs INTEK QUICK FIX ~ RIDING LAWNMOWER that TURNS OVER but WILL NOT START. STARTS then DIES. Jeff's Little Engine Service•377K views · 19:58. 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. 13. Bad Gas Cap. Your Poulan Pro fuel cap has a vent that allows air to pass through the cap. When this vent is plugged, the mower will die after it starts. A clogged vent will cause the fuel tank to form a vacuum restricting fuel. Solution: Loosen or remove your fuel cap and start your mower.Aug 1, 2021 · Messages. 1,448. Aug 2, 2021 / Cub Cadet / Kawasaki FR730V engine stalls and dies... #5. The first thing I would do is to pull the fuel line off. Separate the fuel line from the inlet side of the fuel filter and drain off some of the gas from the tank. Do this after your machine has been sitting overnight. A John Deere mower turns over but won’t start when it isn’t getting the air, fuel, and spark required for combustion.. A plugged air filter, stuck choke, clogged fuel line, plugged air filter, dirty carburetor, bad fuel pump, clogged fuel tank vent, or dirty spark plug may be the cause of a John Deere mower not starting after turning over.. Always follow the safety … ….

If your lawn mower starts then dies, you want a quick answer about what’s to blame, and what to do to fix it. I’ll share the 4 most common causes to this mower problem and what you need to do to address each.Repeated Stop Start of the Lawn Mower. If the rectifier, motor, and thermal cut-off switch are all ok, then the cause of your electric mower cutting out could be down to repeated starting and stopping of the lawn mower. Every time you start your lawn mower, the motor requires a large current to get the motor spinning.Correct the engine oil level by adding or removing a little oil until it is at the level recommended by the engine manufacturer. Consult a mechanic when this doesn’t solve the problem. The zero-turn may have extensive engine damage. Plugged mower deck. Scrape the mower deck. Sharpen the mower blades.Dec 11, 2023 · Amazon. There can be several reasons why a lawn mower engine may die when the PTO (Power Take-Off) is engaged. These are discussed below: 1. Mower Blades Engagement Issue. The most common cause is that the mower blades are not properly engaged. This means that the blades are not securely connected to the PTO shaft. Two of the most common causes of white smoke coming from a lawnmower are: tipping over the mower when getting ready to clean it. There are other more serious causes, such as a faulty crankcase breather or a head gasket failure, which I’ll go over below. It’s also possible that your mower’s engine is simply worn out.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. Gas Filter Blocked. Gas Tank Blocked. Gas Line Blocked. Cleaning the carburetor and draining the gas tank will fix the problem; it’s all covered.Follow along this DIY video to troubleshoot and learn when it's best to service your mower. First step, check the fuel tank to make sure there is enough fuel to operate your snow blower. You should see fuel slosh around. Second step, check the spark plug. A wet plug means there’s fuel going through the fuel system and there may be an issue ...Correct the engine oil level by adding or removing a little oil until it is at the level recommended by the engine manufacturer. Consult a mechanic when this doesn’t solve the problem. The zero-turn may have extensive engine damage. Plugged mower deck. Scrape the mower deck. Sharpen the mower blades. Lawn mower turns over then dies, Even the best commercial lawn mowers experience such problems now and then. Why Your Lawn Mower Starts Then Dies. A healthy lawn mower should start in a few seconds, its engine purring away hungrily with only a slight squeeze of the gas. However, if it sputters and dies a few cranks, the cause could be any one of these. 1. …, Options. If the mower fires and then dies out, or, the mower runs however begins to loose power and dies out... drop the 1/2" bolt that holds the carburetor bowl assembly on - use either a box/circle wrench or 1/2" socket. Remove the bolt from the bottom of the bowl and make sure not to loose the plastic washer for the bolt., Dec 11, 2023 · Amazon. There can be several reasons why a lawn mower engine may die when the PTO (Power Take-Off) is engaged. These are discussed below: 1. Mower Blades Engagement Issue. The most common cause is that the mower blades are not properly engaged. This means that the blades are not securely connected to the PTO shaft. , 1. Overloading the System. One common reason your engine might die when PTO is engaged is the overload of the system. This means you’re asking too much of your tractor’s engine. This often happens when you’re using too many attachments at once or the attachment needs to be lighter for your tractor., 03 - Lawn Boy Lawn Mower Fuel Cap. As 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 won’t be able to enter the tank and a vacuum or “vapor lock” will occur., Jun 20, 2023 · To do this, remove the outflow fuel line from the fuel pump and turn over the engine. There should be an unimpeded flow of fuel that flows with consistency. If the flow is random or slow, you could have found the cause of why your lawn mower sputters but runs. Just be sure to have a container to catch the gas. , February 25, 2024 | By Steven Stewart. Picture this: it’s a beautiful sunny day, and you’re all set to mow your lawn and enjoy the outdoors. You pull the starter cord of your trusty lawn mower, and it sputters to life with a promising roar. But just as quickly as it starts, it dies., Consult a professional if you don’t have the skills, or knowledge or are not in the condition to perform the repair safely. Table of Contents hide. Reasons a John Deere Zero Turn Starts, Stalls, and Dies. 1. Bad or Old Fuel. 2. …, If your lawn mower keeps dying as soon as you engage the blades, it could be due to electrical issues. Electrical problems can prevent the mower’s engine from running smoothly or cause it to shut off completely when the blades are engaged. One possible cause is a faulty safety switch or wiring., Maintaining a beautiful lawn is no small feat. It requires time, energy, and the right tools to get the job done right. One of the most important tools for lawn care is a mower. Ex..., May 31, 2023 · If the fuel cap vent becomes blocked or clogged, it could lead to excess gas fumes inside the mower, which stops the flow of fuel and could be why the lawn mower keeps dying. A needle or pin can ... , Ok, I have a craftsman riding mower, model 917.258523. It ran fine a week ago. I had to replace the flywheel because the plastic one that came on the motor started cracking and messing up the starter gear. I replaced the flywheel and now when I turn the key the motor turns over a full turn and then stops., A lawn mower may start and then die due to old gasoline, a dirty carburetor, a wrong amount of engine oil, a plugged air filter, a bad fuel cap, a faulty ignition coil, a clogged fuel line, a plugged cooling system, or a …, Posted: Jun 4, 2016. Options. This is most likely a safety switch issue. Usually the seat safety switch will cause this problem. The mower dies because it thinks nobody is sitting in the seat, and shuts off for safety reasons. I have read this mower also has issues with the rollover safety switch (shuts off mower if it thinks it has rolled over)., 01 - Lawn Mower Carburetor. The 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., A dirty carburetor is the leading cause of a lawn mower starting and then stalling. Over time, the carburetor can become clogged with dirt, debris, and old gasoline residue, impeding the proper fuel-air mixture and causing the engine to sputter and shut off. Cleaning the carburetor regularly can help prevent this issue and keep your mower ..., Spark Plug is broken or worn out. The spark plug ignites the fuel mixture in the engine chamber. A dirty or worn-out spark plug generates intermittent sparks that cause the lawnmower engine to either not start or die quickly. You can use a wire brush and cleaning solvent to remove the carbon deposits or dirt., A Ferris lawn mower starts and then dies from a plugged air filter, clogged fuel line, bad fuel pump, dirty carburetor, plugged fuel filter, bad battery, dirty spark plug, bad ignition coil, insufficient oil level, bad gas cap, plugged mower deck or old gas. Keep reading for additional items that may cause the mower to quit after starting., When a Bad Boy mower starts then dies, it’s often due to fuel system issues. Common problems include bad or old fuel, clogged fuel filters, dirty fuel injectors, and a dirty carburetor. Additional factors like broken cooling fins, too little or too much engine oil can also impede fuel flow, leading to poor performance or sudden mower shutdown., For those who take lawn care seriously, investing in a Walker Zero Turn Mower is the way to go. This professional-grade mower is designed to provide superior performance and result..., Reasons Your Craftsman Lawn Mower Starts Then Dies. Your Craftsman Lawn Mower may start and then die when your lawn mower is unable to regulate the air-to-fuel mixture required by the engine to form combustion. This could be due to a dirty carburetor, bad fuel, plugged air filter, broken fuel pump, plugged fins, or other components that can ..., 1. Fuel Problem. If your mower keeps dying after starting, it’s the fuel issue 95% of the time. The first thing to check when your lawn mower engine keeps dying within seconds of starting is the fuel tank. If there is an adequate amount of fuel in the tank then the next possible issue could be the clogged fuel line., TL:DR - Ego mower starts and stops after 1 second then shows flashing orange overload light. Fixed this by putting mower in the shade, removing mower battery and placing battery in a 34’F refrigerator for 3 hours. Must do full 3 hour battery chill (tried with only chilling for 20 mins and that wasn’t enough time). Why does it work?, Its a Honda GXV (390 i believe). The way I got the engine started was by taking off the air filter and spraying alot of starter fluid in it. The engine turned over, and would run for about three seconds, presumably just burning the starter fluid as the fuel. After taking apart the gas tank, removing the filter, ensuring that the On Off fuel ..., Reasons a John Deere Zero Turn Mower Won’t Start. Potential Cause. Solution. Empty fuel tank. Fill with fresh fuel. Old fuel. Empty the fuel tank. Fill with fresh fuel and an additive to clean the fuel system like Sea Foam. Bad spark plug., 01 - Lawn Mower Carburetor. The 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 …, 1. Bad Blade Engagement. The blades of your mower or tractor, when poorly engaged, can cause the engine to stop when the PTO runs. This normally happens due to two reasons. Lodged, dulled, or misadjusted blades. Incorrect blade length. Incorrectly routed belt. Bad or broken Blade., Exmark zero turn mowers are a popular choice for commercial landscapers and homeowners alike. These mowers offer a wide range of features that make them an ideal choice for anyone ..., Make sure fuel is flowing through your filter and it’s not being restricted due to being dirty or clogged. When your engine is starved of fuel, it can cause your mower to die while you are in the middle of your lawn-cutting job. Repair: Replace the fuel filter if …, If you have a lawn mower blowing white or blue smoke, you can be almost certain that it is due to the engine burning oil. These are reasons why your engine could be burning oil (from the most common to the least): The lawn mower was tilted on its side incorrectly, or was used at a very steep angle. Too much engine oil was put into the …, Get some starter spray or a small amount of gas and put this into the carburetor. Go back and try to start the mower again. If you find that the lawn mower starts up or at least tries to start up then this tells you that it’s a fuelling fault. Sometimes, this test will yield no results and the mower won’t start at all., If your lawn mower keeps dying as soon as you engage the blades, it could be due to electrical issues. Electrical problems can prevent the mower’s engine from running smoothly or cause it to shut off completely when the blades are engaged. One possible cause is a faulty safety switch or wiring., A John Deere mower turns over but won’t start when it isn’t getting the air, fuel, and spark required for combustion.. A plugged air filter, stuck choke, clogged fuel line, plugged air filter, dirty carburetor, bad fuel pump, clogged fuel tank vent, or dirty spark plug may be the cause of a John Deere mower not starting after turning over.. Always follow the safety …