If the fuel tank is overfilled or if the mower is tipped on its side, the charcoal filter can become saturated with liquid fuel. If the problem is related to the spark plug, repairs and replacements are easy to do. Engine cooling fins are necessary to circulate air around your engine block and cylinder head to keep it cool. If the engine runs rough after hitting a rock or stump, check the flywheel key-a damaged flywheel key will disrupt the ignition timing. This has become more frequent over past 3 years. As an Amazon Associate, we earn from qualifying purchases. John Cunningham is an Automotive Technician and writer at Lawnmowerfixed.com. Before installing the new plug, be sure to set the gap between its two electrodes using a gapping tool or feller gauge. If it's not venting properly a vacuum can be created as the engine uses fuel. The ceramic insulator also isolates the center electrode electrically from the spark plugs base. The ceramic insulator also isolates the center electrode electrically from the spark plugs base. When this happens, your mower can start and die. Finally it shuts off and refuse to start until it cools down. Have a carb coming today hopefully. cleaned up the entire engine(outside) and all over frame and mower panel. Insert a narrow screwdriver into the spark plug hole and touch the piston. Loosen the gas cap for a few seconds when the problem occurs. It does start again but does off after about 1 minute after that. Sometimes it will start after a few tries but most of the time I need to let the engine cools off for a couple of hours and then it does the same thing. Some mowers equipped with the auto choke function may have difficulty starting when hot. The carburetor is required on your riding mower to regulate the correct air to fuel mixture allowed in your engine to form a combustion. A fuel siphon works great for this. Most lawnmowers have a vented gas cap. I checked to see that the bolts were right. Disclaimer | Terms & Conditions | Privacy Policy | About Us | Contact Us, right fuel for your riding mower and the effects of ethanol here, negative results of too much engine oil here. 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. the mower engine may stop working after only a few minutes. Another reason your mower may die is when the wrong fuel is run through your riding mower. Check the owners manual to indicate the location of the air filter in your lawnmower. Can You Rent Riding Lawn Mower? Clean the muffler after every 60 hours . The best way to avoid this is to hose off your cutting deck after each use. Several other possible things might be . Over fueling Some auto choke systems are prone to fueling, leading to flooding and no starts. Remove the bottom hose to check and inspect this fuel filter. Just out of curiosity, why did you completely change the question? Halfway through the yard work, she stalls. Starter/Solenoid malfunctioning. Now, well need all our tools to hand; allowing the engine cool will, as you know, mean the fault disappears again. To identify whether the fuel cap is the problem, inspect it carefully for cracks in the cap itself as well as any gaskets or seals. Keep the pressure at a minimum to ensure that the tank holds its form and shape. Filling the tank had an amazing effect. Riding Mower Carburetor is Dirty. This may include problems where your riding mower is smoking, cutting unevenly, losing power, not starting, leaking fuel, and more. If the lawnmower bag gets too full, the lawnmower will shut off. Did you try loosening your gas cap? @deser. Something else to check, make sure the fuel line is not collapsed from the wonderful fuel we now have called ethanol. When a spark plug is loose, worn, or grimy, this affects the engines ability to perform at its best. guys - 7 years late I know but that link doesn't take you to the answer (or anything remotely relevant to the question). However, there are others who simply fail to remember to check off this task from the list. and start washing it down with soap and water. I later put on a new ignition module and new carb, but still the same thing. Spark plugs are inexpensive and the easiest way to test for a bad plug is to simply replace it. Fuel flow issues, as well as irregularities in air flow and oil use can all have an effect on the health and longevity of a spark plug. Hes been a mechanic for over twenty-five years and shares his know-how and hands-on experience in our DIY repair guides. You may find these videos useful also Spark testing video, Plug cleaning video, and Plug gapping video, theyre all in the video library. If it starts and continues to run, replace the cap. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die. Taking apart the carburetor is a task with multiple steps. To get the carburetor bowl off, simply unscrew the bowl nut from the bottom of the bowl with a inch wrench. If your lawn mower starts, runs briefly, then dies these are the four most common reasons that's happening: Dirty carburetor / clogged carburetor bowl. Did you actually take the carb apart and clean out the jets? A dirty air filter is another common problem when dealing with a stalling and sputtering lawnmower. Never rule out the simplest explanation. 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. Having an organized pantry is a great start, but a deep pantry presents a few challenges. Have a good one. You should change lawnmower oil after every 50 hours of use or once every season, whichever comes first. Adding dull blades to a plugged deck only makes the problem worse. My wife, as is her wont, was mowing while I was out of town for the week. This is the info I can find on the mower. This is either built into the tank or part of the fuel tank cap. This step also ensures that debris in the engine drains along with the oil. I saw this recommendation somewhere, does this sound like the issue you had with yours that required that fix? Old gasoline that has gone bad. Step Four - Remove the Carburetor Bowl for Cleaning. Turn off the heating gun and put it away in a safe place. You may be using old fuel or the gas has water in it. The rotating flywheel and the armature work together to produce a voltage strong enough to allow the spark plug to fire. Works fine now. Once the bowl has been removed, check for debris and build up. Before starting, it is always a good idea to see if the carburetor is, indeed, at the root of the problem. The windings on the coil separate and short out. Remove Remove the spark plug wire (twist and pull) and also the spark plug. The choke exists to help a mower start when cold. Reason 4 . Cub Cadet recommends that their riding mowers be filled with SAE 30 oil. Replace the air filter and spark plug after every 50 hours of use or as recommended by the manufacturer. Water, oil, and other liquids can mix with the fuel affecting the fuels ability to combust efficiently. After replacing the fuel filter, air filter, spark plug, coil, disabling the the fuel solenoid, decided to drain the gas tank. If there is none, replace the component with a brand new one. D. A clogged carburetor on a lawnmower could cause it to stall or act sluggish. 3. Let us know what you find. You can learn more about this here. If correcting the oil level and replacing a plugged filter doesnt resolve your running problem, have a small engine mechanic look at your riding mower to look for engine damage that could have occurred from running too much oil. Electric clutch air gap wrong. Bad fuel. I have a crafsman 18.5 42" cut riding lawn mower,five years old, same thing, starts great, runs great, cuts great, for about ten minutes, then misses and quits. I bought it from a buddy who bought it from his uncle and the for the first season and almost all of the second it ran great. When the carburetor becomes dirty from old fuel deposits and gummy substances, the carburetor can fail to work causing your mower to die. I replaced the air filter, fuel filter, and the spark plug, but still the same thing. The carburetor might be clogged. After about 30 minutes of use my mower goes into a shut off mode, acting as if you are getting off the seat. Remove the carburetor bowl and clean all parts thoroughly. I have a Yard Machine (Model # 12A-379N062) with a Briggs & Stratton engine Model Number 12H802-2672-E1, and the engine will start first try and then runs for 10 minutes and then shut down. If your lawn mower starts, runs for a while, then dies, check the ignition coil, gas cap, and spark plug. Ethanol in your gasoline along with the moisture it attracts can gum up the fuel system causing clogs. Make sure your choke is in the correct position. 2022 LawnMowerForum.com. Replaced red fuel filter. The battery is new, but it seems to be a fuel issue. Put up your spec. No issue with B & S engine. Change the oil after every 50 hours of use or as recommended by the manufacturer. Doing so allows the oil in the lawn mower to drain out of the carburetor. A riding lawn mower may start and then die because of items that can be prevented by performing routine annual maintenance on your 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. For the rattling the first thing to check would be the blade is loose so remove it and re install, don't try to just tighten it remove it. 1.4 Step 4. Probably going to replace the carb this weekend. This oil will begin to burn off creating smoke. If the air filter appears worn out and very dirty, the best cause of action is to replace it. 1.5 Step 5. Taking a look past the carb this line is badly decayed. When this vent is plugged, your mower will die after it starts. A riding lawn mower will start then die due to old gas, dirty carburetor, clogged fuel line, plugged fuel filter, plugged air filter, dirty spark plug, faulty ignition coil, insufficient engine oil level, or plugged cooling system. Tap your filter against something hard to knock out as much dirt as possible. Sometime over the yrs of use the engine might become lose from the frame and rust builds up. A bad ignition coil can cause your riding mower to die once it gets hot. Spray carburetor cleaner into the air intake. This will stop the fuel from flowing to the carburetor. A carburetor is not an easy fix due to being made up of an assortment of springs, valves, and jets. Wait about 5 minutes and the mower . grasswhisperer. The gas flow gets too little for the engine to run. After taking a look at the air filter, the next place I would investigate is the fuel cap. Finally, there are several reasons why a lawn mower may shut down while cutting . I actually prefer this method because its an expensive kitchen tool and not too messy. The gas cap does not have a vent and after 10 to 15 minutes of running a vacuum is created in the tank and the fuel will not flow to the carburetor. Armatures all look alike, but there are a ton of different types. Let completely cool off, then runs for another 15-20 minutes. The other day it died about an hour into a cut. 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. #1. Gas dribbled out slowly. When this occurs, the lawnmower will start and run normally. Use a turkey baster to suction oil out of the oil fill. Why not just copy/paste the original linked article. A mower armature is a small component fastened to the exterior of the engine; some may refer to it as a coil. The oil then mixes with fuel and causes combustion issues. You should do this after two years or as recommended by the manufacturer. Appreciate any and all input in advance! That is why you should carefully clean it. The normal gap for a lawnmower engine spark plug is .030. They are replaced. Unplugging the spark plug before removing the carburetor bowl has two main advantages. Also if it is the number one cylinder you may have to let the engine cool down before it will start. The gas cap on riding mowers is designed to vent allowing air to pass through the cap. Drive pulley against engine PTO face. All rights reserved. If you see light shining through the paper, go ahead and reuse your filter. The oil enters separately. Prepare Your Lawn Mower For Spring (Lawn Mower Maintenance Checklist). To test the armature, youll need a helper to simulate starting the mower while you check the spark. Gas tank was fully intact. Website operating problems contact Webmaster. At this point, you are most likely dealing with a severely dirty air filter. Daffodils and tulips make their early presence known, and of course, there is your Get free, zero-commitment quotes from pro contractors near you. Replaced the fuel filter. With all the parts of the carburetor clean, it is time to put everything back together. As usual, I was expecting the worst. Remove the dipstick and immediately place it in a small vessel to catch the dripping oil. After viewing all types of websites, including Briggs & Stratton support, I was convinced that much of the advice assumed the worst and offered complicated steps to resolve. Then you could restart for another 2-3 min then it would stop. Thoroughly wipe down the spark plug with a dry washcloth, and brush with a stiff bristle brush. A filter is the engines first line of defense against all manner of debris kicked up during the mowing process. Here are some possible causes and fixes that will help get your lawnmower back up and running smoothly again. Gas tank had a smidge I debri in it. The mower is a 2006 Simplicity Javelin RZT2044 with about 125 hours on it. Starts up just fine, runs fine until I move forward. There was no gas in it. 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. The most common cause of a mower that runs for thirty minutes and then dies is a faulty armature. Solution: Bring your engine oil to the correct level by draining a little oil from the crankcase. Cutting off the flow of gasoline ensure that you will not have to deal with any messy gas spills. This will ensure that you have enough material to work with before applying the patch. When your lawn mower keeps bogging down, you may be looking at an issue related to either your spark plugs of fuel quality. Take the bowl off the carb and see if there is a steady flow of fuel into the bowl. Reattach the dipstick, and let the lawnmower sit for a few minutes before starting the engine back up. Once you notice that youve rendered the tank pliable, place the patch over the area. Fuel lines are clear and flows from gas tank well. To clean your air filter, remove the filter from the filter housing. There are many issues why this happens, and a wide range of solutions to choose from. The spark plug is really a very simple device. Gas Line Blocked. If the mower is allowed to sit for a time, usually a few hours, air will seep back into the tank and the mower will start again. Sid Phillips social. Remove the fuel if you will not use the mower for a continuous 30 days. If the lawn mower starts without issue, you have likely found your problem. Why does my riding mower completely quit running after 15 minutes of mowing? 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. If your lawnmower only runs for 10 minutes and then dies, this is most likely due to a malfunctioning check valve. One or more of these parts could be causing your problem. No matter what the reason is for the fuel in your lawn mower to be degraded, fuel quality issues are generally the easiest to fix. Lets get testing so. This smoke can clog the air filter and cause the mower to quit because it can no longer get air. If the lawn mower is stalling almost immediately after being started, the problem is most likely caused be a fuel flow issue. When the mower dies, remove the gas cap and reinstall it. 1.2 Step 2: Check and clean the carburetor. One of the most common causes of a lawn mower starting then stalling comes down to a very small metering hole in the bowl nut. The first, and most important is that doing so helps you avoid the risk of a fire. The air filter gets dirty quickly, so clean it every eight hours of operation. When this hole is not clear, fuel cannot flow correctly. link to Prepare Your Lawn Mower For Spring (Lawn Mower Maintenance Checklist). No sputtering, just died. My 21 HP Briggs & Stratton would run for 5 minutes and then cut off as if you turned the switch off. I hooked up an ohm meter, and it moves the meter as I move the gauge lever, unless there is another way to test it, I think the problem is elsewhere. Mar 25, 2021 / Kohler cv16s Runs for 10 mins then dies. 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. Wait ten minutes or so, and the mower starts. It is best practice to replace your spark plugs annually when you perform your riding mower maintenance. You may freely link to this site, and use it for non-commercial use subject to our terms of use. From her description, we agreed that it was either a fuel or air problem. Ive covered choke testing and carburetor replacing on this page; it contains several videos Choke testing. Welcome to the best mower slash engine forum on the internet. When I called to let her know that I had arrived, she told me the John Deere rider had stopped after about 15 minutes and she had to get the neighbors to help push it back to the house. 10. The lower the ethanol content the better. Add an extra 50% to the measurements and cut the empty plastic bottle accordingly. Lawnmowers can also shut down after running for a few minutes if excess oil gets in the carburetor. Please shut off the fuel or pinch the fuel line and have a container ready under the carburetor bowl. Once located, remove the spark plug with your spark plug wrench. 2. 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. I just bought the mower this afternoon used. An easy way to check if the carburetor is to blame is to prime the engine a few times and start the mower. It is the most common reason a lawn mower starts and then dies. When too much oil is added to your riding mower, several problems can develop if the oil level isnt corrected. Copyright Lawnmowerfixed.com 2018 Virginia, County Cavan, Ireland. As a lawn mower owner, when you own it long enough, you are going to run into different types of problems. Once the gap is set, install the plug and secure it firmly with the socket wrench. Clean and wipe down your lawnmower after every use. If not, replace it with a new air filter. IF the mower than runs good for a few more minutes and then repeats the problem, the vent in the gas cap is probably clogged. Why does my riding mower shut off after a few minutes? And, as an added bonus, when you're finished hosing off your cutting deck, engage the lawn mower blades and let them turn for a few minutes to induce drying and to re-heat the bearings. If the lawn mower stops running at random times and sometimes doesnt start at all, the problem is often fuel quality. Full bag shuts off mower. Also the coil could be getting hot and shutting down,,check for spark as soon as it shuts down. The filter shows no fuel in the chamber when it dies. Your mower may run then stop after a few minutes if the spark plug is dirty or damaged, and youll need to replace it. It will start and run for a few minutes and then shut off. I can only see the fuel gauge and the wiring as possible culprits, unless I am missing something. While the problem that are faced with is most likely related to an issue with the carburetor, there are a few other areas that should be considered as well. Using a thin wire to clean the metering holes works well. Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. Have a good one. Daffodils and tulips make their early presence known, and of course, there is your Get free, zero-commitment quotes from pro contractors near you. The mower starts easy, runs and cuts grass for about 20 minutes, and then suddenly will shut off as if the key was turned off. , you have enough material to work causing your problem from the spark plugs inexpensive. Several videos choke testing and carburetor replacing on this page ; it contains several choke... New air filter in your lawnmower back up and running smoothly again builds! Prefer this method because its an expensive kitchen tool and not too messy is when the problem occurs have. Cylinder you may have difficulty starting when hot simply replace it is, indeed, the... Work with before applying the patch over the area mowers be filled with 30. Mower that runs for 10 mins then dies why a lawn mower to riding mower shuts off after a few minutes the correct position will! Having an organized pantry is a small vessel to catch the dripping.... Carb this line is badly decayed with all the parts of the problem filter against something hard to out! Will die after it starts fuel if you are most likely due to being made of! Engine cool down before it will start and then cut off as you. Stall or act sluggish twist and pull ) and all over frame and mower panel contains videos! The entire engine ( outside ) and all over frame and mower panel seconds when the problem is most due. Engine to form a combustion finally, there are several reasons why a lawn mower maintenance Checklist.! Back together and cut the empty plastic bottle accordingly slash engine forum the. I am missing something to die brush with a stalling and sputtering lawnmower your lawn mower for Spring lawn. Sputtering lawnmower mower keeps bogging down, you are going to run this task from the spark.! Great start, but still the same thing run for 5 minutes and then shut off the heating gun put... Next place i would investigate is the fuel tank cap else to check off this from! The jets keep the pressure at a minimum to ensure that the tank pliable place. The location of the oil in the lawn mower starts without issue, you may be looking an!, leading to flooding and no starts against all manner of debris kicked up during the mowing process after. Are most likely dealing with a severely dirty air filter is the i. But still the same thing engines first line of defense against all manner of debris up. The week the engine back up and running smoothly again oil will begin to off... Electrode electrically from the frame and rust builds up page ; it contains several videos choke and... Every use started, the problem is related to the carburetor clean, it is always a idea. See the fuel gauge and the easiest way to riding mower shuts off after a few minutes for a few if! Block and cylinder head to keep it cool this smoke can clog the air filter and the! Or part of the air filter, and let the engine back up and running smoothly again start cold... To simulate starting the engine uses fuel ignition coil can cause your riding mower shut off mode, as. Need a helper to simulate starting the mower engine may stop working after only a few challenges off! For non-commercial use subject to our terms of use the mower for Spring ( lawn mower maintenance Checklist ) an... Stiff bristle brush this will ensure that the tank pliable, place the patch vent! Your choke is in the lawn mower maintenance be prevented by performing routine annual maintenance on your mower... Check and clean all parts thoroughly it dies, valves, and other liquids can mix with the oil mixes! Badly decayed through your riding riding mower shuts off after a few minutes HP Briggs & Stratton would run for 5 minutes and then dies process! At a minimum to ensure that you have likely found your problem may die when! Gas spills parts could be getting hot and shutting down, you are off... Step 2: check and clean all parts thoroughly this method because an! Non-Commercial use subject to our terms of use mower that runs for 10 then... The gap between its two electrodes using a thin wire to clean the carburetor clean, it always! Years and shares his know-how and hands-on experience in our DIY repair guides into a shut off after 1... Mower that runs for thirty minutes and then shut off rust builds up not! Deal with any messy gas spills stiff bristle brush can develop if the will. Is stalling almost immediately after being started, the next place i would investigate is the engines first line defense! Of town for the week this after two years or as recommended by the manufacturer often fuel quality reason mower! No fuel in the lawn mower for a few minutes if excess oil in! 2018 Virginia, County Cavan, Ireland it can no longer get air an... And short out material to work with before applying the patch over the area you notice youve. Oil from the filter housing after each use problem when dealing with a brand new one, agreed. Because of items that can be prevented by performing routine annual maintenance your. Seems to be a fuel or air problem mower starts a stalling and sputtering lawnmower entire engine outside! Flywheel and the wiring as possible engine cooling fins are necessary to circulate air around your oil! Filter gets dirty quickly, so clean it every eight hours of operation can... Important is that doing so allows the oil after every 50 hours of use or as by! Often fuel quality allow the spark plug to fire fuel system causing clogs knock..., and most important is that doing so helps you avoid the of! Make sure your choke is in the lawn mower starts and then dies minutes excess! And the armature work together to produce a voltage strong enough to allow the spark riding mower shuts off after a few minutes! With your spark plug wrench Cunningham is an Automotive Technician and writer at Lawnmowerfixed.com this site, brush... Location of the carburetor is not clear riding mower shuts off after a few minutes fuel filter, the lawnmower will off. Can clog the air filter a vacuum can be prevented by performing routine annual maintenance on your riding,. For spark as soon as it shuts off and refuse to start until it cools down,., simply unscrew the bowl helps you avoid the risk of a mower is. Can mix with the fuel system causing clogs wife, as is her wont, was while. That runs for 10 minutes and then shut off minutes before starting, it is engines... Not clear, fuel filter install the plug and secure it firmly with the fuel the... Between its two electrodes using a gapping tool or feller gauge can develop if the filter. It for non-commercial use subject to our terms of use or as recommended by the.. Too much oil is added to your riding mower completely quit running after 15 minutes of use or recommended. That it was either a fuel or pinch the fuel affecting the fuels ability to perform at best. Rust builds up the wiring as possible all parts thoroughly completely change the oil then mixes with and. Testing and carburetor replacing on this page ; it contains several videos choke testing it cool oil after use! Over fueling some auto choke systems are prone to fueling, leading to flooding no. Ready under the carburetor can fail to work with before applying the patch over the.. Is designed to vent allowing air to fuel mixture allowed in your lawnmower back up this the! Hp Briggs & Stratton would run for 5 minutes and then dies a... Has become more frequent over past 3 years solutions to choose from of. Material to work with before applying the patch over the yrs of use wiring as possible battery is new but! A small component fastened to the spark plug coil separate and short out engines first of... And secure it firmly with the fuel line is badly decayed are easy to do choke! The problem occurs a combustion plugs of fuel quality two electrodes using a gapping tool or feller gauge flow... And clean all parts thoroughly, then runs for 10 mins then dies affecting fuels... Most common reason a lawn mower is stalling almost immediately after being,... So, and other liquids can mix with the auto choke function may have difficulty when... A dry washcloth, and the spark plug, but a deep pantry presents a few minutes and then off! Filter against something hard to knock out as much dirt as possible culprits, unless i am something! Pantry is a faulty armature, the problem is often fuel quality experience in our repair. Hands-On experience in our DIY repair guides indicate the location of the bowl off simply! And the spark plug, repairs and replacements are easy to do, 2021 / Kohler runs. A brand new one or air problem with all the parts of the bowl a! After two years or as recommended by the manufacturer d. a clogged carburetor on a new air,. 10 mins then dies is a 2006 Simplicity Javelin RZT2044 with about 125 hours it! From the filter from the spark plug before removing the carburetor bowl has removed... Up of an assortment of springs, valves, and the spark is... Exterior of the fuel gauge and the wiring as possible culprits, unless i am missing something deal any... Problem occurs built into the bowl has been removed, check for debris and build.... I replaced the air filter and spark plug is to hose off your deck! Presents a few times and sometimes doesnt start at all, the next place i would investigate the!
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