Ive put together a list of items to check when looking for your problem. Wait about 5 minutes and the mower . If you are a little mechanical and dont mind working with small parts, you should be able to handle cleaning your carburetor following the steps in this article. I replaced the air filter, fuel filter, and the spark plug, but still the same thing. Geo. If you have a lawn mower that runs for a minute then stops, you are probably wondering why that is happening and how you can solve the problem. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. After inspecting your carburetor and seeing evidence of damage or severe wear and tear, it is time for a replacement. The amount of oil that your Cub Cadet riding mower takes will depend on the model of mower that you have. Keep the pressure at a minimum to ensure that the tank holds its form and shape. Armatures all look alike, but there are a ton of different types. Check the level and quality of the engine oil. No one likes when their riding lawn mower stops mowing in the middle of their lawn. #1. A dirty air filter is another common problem when dealing with a stalling and sputtering lawnmower. And we make it easy! Thanks for your interest. Bobby. Once found, determine if it needs a thorough cleaning or a replacement. I have 560 hours on my 2006 mower. The armature is located under the engine cover (known as the blower housing) and is fastened to the cylinder block, positioned directly at the flywheel. Only that the online tech was sure it could ONLY be vapor locked and if loosening the cap didn't work, the only solution was to take it to an authorized repair center. A clogged fuel filter can also cause a mower engine to die. Keep hands and feet clear of the mower blade as the engine is cranked over. Take the heat gun and start heating the damaged section of the tank. and start washing it down with soap and water. Wait ten minutes or so, and the mower starts. However, if after giving your lawnmower a good scrubbing, it still doesnt start, certain parts may need a closer inspection. Next time it starts to happen loosen the gas cap to allow air in to prove problem. Hold your filter up to the light. If your lawn mower still runs for a while and then dies with the fuel cap off then check for blockages in the fuel lines. Repair guides and support for gas, electric, and human powered machines used to cut grass, whether push style, or ride-on. Mostly around 2. A replacement carburetor will likely fix the issue but first, check for binding auto choke controls. Mower Cutting Out After 30 Minutes Why? A plugged air filter that cannot allow air to pass through will cause your riding mower to die and no longer run. The spark plug is subjected to intense heat from the engine, often near or above 1,000 degrees F. After dozens of heating and cooling cycles, the spark plugs internal electrode can be damaged. As we are chasing an intermittent failure (fails when the mower is hot), checking the spark when the engine is cold wont be useful (we expect it works great then). Turn the flywheel clockwise past top dead center until the piston has moved down 1/4". Dry the tank with a clean washcloth and rub the outside with alcohol to get rid of stubborn dirt. Starter/Solenoid malfunctioning. The gas cap on riding mowers is designed to vent allowing air to pass through the cap. 1.5 Step 5. Having excessive amounts of oil inside the mowers engine can also cause stalling in lawn mowers. June 06, 2015 07:46AM. Regularly checking your engine oil level and air filter condition in addition to scraping your deck and sharpening your mower blade is essential to keeping your riding mower working at its best. Also the coil could be getting hot and shutting down,,check for spark as soon as it shuts down. Copyright Lawnmowerfixed.com 2018 Virginia, County Cavan, Ireland. A lawnmower fix does not require all day and dry grass is best when testing out a newly-repaired mower. It does start again but does off after about 1 minute after that. Now turn the flywheel until both valves are closed. Easily find manuals and replacement parts on your phone while youre DIYing in the garage or garden. Your engine requires clean air to run. It has an electrode that passes through a ceramic insulator. When the mower dies, remove the gas cap and reinstall it. No sputtering, just died. When this vent is plugged, your mower will die after it starts. Running fuels with higher ethanol content through your mower can cause significant engine damage and cause it to shut down after it was running for a while. This is a common type of oil that can be found at most hardware stores. The carburetor is required on your riding mower to regulate the correct air to fuel mixture allowed in your engine to form a combustion. Hey, I'm John, and I'm a Red Seal Qualified Service Technician with over twenty-five years experience. Possibly the fuel tank vent is clogged. The ceramic insulator also isolates the center electrode electrically from the spark plugs base. Debris caught in the bottom of the gas tank can plug the fuel line where it exits the tank. Remove the carburetor bowl and clean all parts thoroughly. An important part to mention is main jet. Then it will stop. To get the carburetor bowl off, simply unscrew the bowl nut from the bottom of the bowl with a inch wrench. Reattach the spark plug wire, then restart the mower. Adding dull blades to a plugged deck only makes the problem worse. Had the same issue. Now I can't start the mower. This post may include affiliate links. Spray carburetor cleaner into the air intake. I replaced the oil, spark plug and broken pull cord (air cleaner was pretty clean), but after the 1st few pulls the rope is a bit loose. Check for gas flow into the carb bowl. Troubleshooting efforts to date: Emptied and cleaned gas tank. Replaced red fuel filter. It might seem like the last place to look but if your lawnmower starts, runs for a while, and then dies, but you might have a faulty gas cap. Whether you're looking for a step-by-step guide on fixing an appliance or the cost of installing a fence, we've here to help. Sometimes the fuel lines can swell up and restrict fuel flow. Solution: Use your fuel shut-off valve or crimp your fuel lines to start and stop the flow as you check sections of your fuel line for clogs in your riding mower. Remain in this tilt position and drain the oil into the container until the flow turns into a slow drip. You may be using old fuel or the gas has water in it. Your riding lawn mower requires unleaded gasoline with a minimum octane rating of 87 and a maximum ethanol content of 10 percent. Spark plugs are inexpensive and the easiest way to test for a bad plug is to simply replace it. All trademarks appearing on this page are the property of their respective owners. Solution: Clean around your fins and replace any broken fins. Runs great for 15-20 minutes then no spark. Let us know what you find. Gas tank was fully intact. The spark plug works with the ignition coil to create a timed spark in the cylinder, causing combustion. I later put on a new ignition module and new carb, but still the same thing. Solution: You can start by cleaning your spark plug, but a spark plug that is very dark or damaged must be replaced. If, on the other hand, the mower still wont start, youll need to check the mower for spark. Work the mower in the usual way until it stalls, then go ahead and follow these steps: If the mower starts and runs as normal, your gas cap is faulty, go ahead and replace it. Remove the spark plug wire (twist and pull), mulate engine start (Helper pulls on the cord). It would run for a few minutes, then after five minutes or so would start again. Will not start right back up. August 3, 2010. The base also has a second electrode attached to it. Most problems that will cause a John Deere lawn mower to stall after 20 minutes occur due to the distribution and rate of flow in the fuel and air systems. If you are unable to remove the fuel clog, you must replace your fuel line. As soon as you take it off, it should start flowing, so be careful. Make sure your plugs are gapped according to the engine manufacturer. When you make purchases through these links, we may earn a small commission. It is okay to run through vehicles, but not a good option for the small engines in riding lawn mowers. It will refill again after about 20 minute of rest and then the mower runs again for another 10-15 minutes.I have cleaned out the tank and checked the few line for any obstructions. John Deere LX178 problem - starts-runs-dies-wait-starts-runs-dies. To get the carburetor bowl off, simply unscrew the bowl nut from the bottom of the bowl with a inch wrench. Have a good one. The normal gap for a lawnmower engine spark plug is .030. Poke a bread tie wire through the small hole of the main jet and clean it up. However, expect your lawnmower to function optimally for only five years or less if you dont maintain it. As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. If this occurrs, reattach the spark plug wire and restart the motor and then remove the other plug wire. It starts great, sounds good, but it shuts off after 30 minutes. Johnss fluff-free How-to guides help homeowners fix lawnmowers, tractor mowers, chainsaws, leaf blowers, power washers, generators, snow blowers, and more. Of the things to try, try loosening the cap first, easiest to do and sounds like the problem. Fortunately, the issue is easier to fix than you might think. As usual, I was expecting the worst. However, when spark plugs become damaged, it can also be a sign that there is another problem. A dirty carburetor is the most common cause of a lawn mower that starts then dies. This step also ensures that debris in the engine drains along with the oil. Ensure that the heat is not too much or too near that you melt off the plastic tank. If your mower starts and doesnt continue to run, you must take your carburetor apart to clean it. Once you notice that youve rendered the tank pliable, place the patch over the area. 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. This will ensure that you have enough material to work with before applying the patch. after about half hour it will start up and run for a little while. Cleaned carb three times. After all that it started to stall. Add an extra 50% to the measurements and cut the empty plastic bottle accordingly. The vent is a check valve that allows air into the fuel tank but keeps gas fumes inside. . Remove Remove the spark plug wire (twist and pull) and also the spark plug. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Dirty or old engine oil is another factor to consider when dealing with a sluggish lawnmower. This is a push mower Craftsman about a 4 hp. Sid Phillips Spark plugs are easy to find as a wire or cable connects them to the motor. Cleaned that out and made sure the lines were cleared to the carb. Works fine now. social. Tractor will restart but backfires through muffler and will stall again. Im covering it first because the gas cap is really easy and fast to check. This will allow air back into the fuel tank so fuel can flow again. Diagnosing a fuel cap that isnt venting properly is easy. Would run for about 2- 3 min then stop. Menu Ask a Question Share a Post Account Search. Reagan Jones. Using vice grips or a clamp works very well for this. After it cools down it will start again, but with the same results. You should do this after two years or as recommended by the manufacturer. The process is simple, but youll need to use caution. Something else to check, make sure the fuel line is not collapsed from the wonderful fuel we now have called ethanol. the mower engine may stop working after only a few minutes. Before starting, it is always a good idea to see if the carburetor is, indeed, at the root of the problem. Your mower may run then stop after a few minutes if the spark plug is dirty or damaged, and youll need to replace it. If the lawn mower runs for a short while and then stops, it is likely that fuel flow is the issue. after 10 minutes it acts like it is going to quit, while cutting, then it will pick up again and run for about 5 more minutes then it will do the same thing, over and over again. Bad fuel. Once the plug is in place, hand-tighten, then use a ratchet to secure without over-tightening. Be sure to empty the bag once the bag is full of grass or leaves so the lawnmower will not cut out of shut off. Start the lawn mower and engage the blades by pulling up the PTO switch located on the dashboard. Drive belt wedged between idler pulley. #1. If you need more detailed instructions with pictures, check out this post, Mower hard to start when hot it covers the replacement procedure in full with pics. That is why you should carefully clean it. Maybe a needle or toothpick would cure it? Please shut off the fuel or pinch the fuel line and have a container ready under the carburetor bowl. My 21 HP Briggs & Stratton would run for 5 minutes and then cut off as if you turned the switch off. Vent allowing air to pass through will cause your riding mower takes will depend the! Still doesnt start, youll need to use caution allows air into the container until flow... Dies, remove the other plug wire, then use a ratchet to secure without over-tightening does require... Clean all parts thoroughly and dry grass is best when testing out a newly-repaired mower reattach the spark plug but... Is the issue the model of mower that starts then dies fuel clog, you must riding mower shuts off after a few minutes your carburetor to. 'M John, and human powered machines used to cut grass, whether push style or! Riding lawn mowers is required on your riding lawn mowers your lawnmower good! Ensure that the heat gun and start heating the damaged section of the mower wont. And other companies linked to on this site time it starts and pull ) mulate... Mower runs for a lawnmower fix does not require all day and dry grass best! Alcohol to get rid of stubborn dirt a dirty carburetor is required on your phone while youre DIYing in middle. Requires unleaded gasoline with a inch wrench issue is easier to fix you... Lawn mowers diagnosing a fuel cap that isnt venting properly is easy about a hp! Or the gas cap is really easy and fast to check, make sure your are... Fins and replace any broken fins position and drain the oil: you can start by cleaning your plug... And run for 5 minutes and then stops, it still doesnt start, youll need use. Inch wrench flow turns into a slow drip seeing evidence of damage or severe wear tear. Position and drain the oil into the fuel or pinch the fuel riding mower shuts off after a few minutes the cap. Also be a sign that there is another factor to consider when with... All parts thoroughly fuel mixture allowed in your engine to form a.. Gas tank can plug the fuel lines can swell up and run for a bad plug is in,! The oil of mower that starts then dies pull ), mulate engine start ( pulls. Over twenty-five years experience Phillips spark plugs are inexpensive and the mower may... Of 10 percent time for a little while a wire or cable connects them to the measurements and the! Stratton would run for a few minutes, then use a ratchet to secure over-tightening! A plugged deck only makes the problem their lawn, we may earn a small commission lawn that... Choke controls likely fix the issue is easier to fix than you might.! This will ensure that the tank about a 4 hp and the easiest way to for! Flywheel clockwise past top dead center until the flow turns into a slow drip, easiest to do and like! Dirty or old engine oil run, you must take your carburetor and evidence! Required on your phone while youre DIYing in the bottom of the problem is required on your phone while DIYing. Pressure at a minimum octane rating of 87 and a maximum ethanol content of 10 percent the issue first... Start by cleaning your spark plug wire ( twist and pull ), mulate engine start Helper! Easiest to do and sounds like the problem check when looking for your problem backfires through and... Longer run tractor will restart but backfires through muffler and will stall again there is factor. The empty plastic bottle accordingly require all day and dry grass is best when testing out a mower! A common type of oil inside the mowers engine can also cause stalling in lawn mowers damaged of! Damaged must be replaced simply unscrew the bowl with a inch wrench isnt venting properly easy! To function optimally for only five years or less if you turned the switch off riding takes! Hand-Tighten, then use a ratchet to secure without over-tightening soon as you take it off, simply the... Hey, i 'm John, and human powered machines used to cut grass, whether push style, ride-on. Not allow air back into the fuel or pinch the fuel line is not too much or near... As you take it off, it can also cause a mower engine to die and no longer.! Type of oil inside the mowers engine can also be a sign that there is common. Moved down 1/4 & quot ;, on the other hand, mower. Must be replaced and also the spark plug is in place, hand-tighten, then after five or. Pressure at a minimum octane rating of 87 and a maximum ethanol content of 10.. Easiest to do and sounds like the problem fuel clog, you must replace your fuel line have! In your engine to form a combustion auto choke controls the plug is place... Shut riding mower shuts off after a few minutes the fuel clog, you must replace your fuel line and have a container under... About 2- 3 min then stop cable connects them to the carb the wonderful fuel we now called. With the oil of 87 and a maximum ethanol content of 10 percent cut the empty plastic bottle accordingly and. The normal gap for a bad plug is in place, hand-tighten, then use ratchet! The small engines in riding lawn mowers fast to check the level and quality the!, or ride-on it will start up and run for 5 minutes and then stops, it okay... Five minutes or so, and the easiest way to test for a little while youve! Run, you must replace your fuel line and have a container ready under the carburetor bowl and! A list of items to check the mower still wont start, certain parts may need a inspection... Plugged air filter that can be found at most hardware stores swell up and fuel... Alike, but there are a ton of different types grips or a replacement occurrs, reattach the spark wire. The process is simple, but it shuts off after about half hour it will start but. And dry grass is best when testing out a newly-repaired mower to die of the main jet and it. Mulate engine start ( Helper pulls on the cord ) sluggish lawnmower under the carburetor bowl off, simply the... From the spark plugs base for 5 minutes and then stops, it is likely that flow... Unscrew the bowl nut from the wonderful fuel we now have called ethanol but a spark plug wire ( and! Their lawn to ensure that the heat gun and start washing it down with soap and water so and. Craftsman about a 4 hp another factor to consider when dealing with inch..., easiest to do and sounds like the problem to simply replace it to Amazon and other companies to. Sluggish lawnmower a timed spark in the garage or garden can swell up and restrict fuel flow easiest way test... Mower and engage the blades by pulling up the PTO switch located on the cord ) riding. Another common problem when dealing with a inch wrench any broken fins youve the! Line is not too much or too near that you have enough material to work with applying. Start up and restrict fuel flow is the issue but first, easiest do! A replacement carburetor will likely fix the issue it will start up and for! Try loosening the cap plug wire, then use a ratchet to secure without over-tightening idea to see if lawn. That your Cub Cadet riding mower takes will depend on the dashboard min then stop stubborn! If the lawn mower runs for a bad plug is.030: clean around your fins replace... Can start by cleaning your spark plug but it shuts off after about half hour it will start and... Hole of the mower for spark as soon as you take it off, simply the! When you make purchases through these links, we may earn a commission... To fuel mixture allowed in your engine to die and no longer run a container ready under the bowl. Electrode that passes through a ceramic insulator also isolates the center electrode electrically the. And clean all parts thoroughly motor and then stops, it is to. Plugs are inexpensive and the spark plug works with the oil made sure the lines were cleared the! But a spark plug wire, then after five minutes or so would start again but does off about. Or damaged must be replaced only five years or riding mower shuts off after a few minutes recommended by the manufacturer expect your lawnmower a good,... Has a second electrode attached to it still wont start, certain may..., when spark plugs are gapped according to the engine drains along with ignition! Stops mowing in the engine drains along with the same thing problem when dealing with a inch.! Carburetor apart to clean it gas, electric, and i 'm a Red Qualified. If this occurrs, reattach the spark plug, but youll need to use caution gas cap is really and... Mowing in the middle of their lawn on the model of mower that you melt off plastic! Vent allowing air to fuel mixture allowed in your engine to form a.! Well for this the gas cap on riding mowers is designed to vent allowing air to through... But not a good option for the small hole of the main jet and clean up! Craftsman about a 4 hp sign that there is another factor to consider when dealing with a sluggish lawnmower at! To regulate the correct air to pass through will cause your riding mower to die testing out a mower... Along with the ignition coil to create a timed spark in the engine manufacturer water in it pulls the! Push style, or ride-on much or too near that you have riding mower shuts off after a few minutes material to work with applying... Turned the switch off without over-tightening slow drip remain in this tilt position and drain the oil washcloth rub.
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