Common solutions for: My Lawn Mower Starts then Stops. A faulty gas cap is the second most likely cause. putting the choke on would keep it running for only a few more minutes. My T1000 (purchased in2014) suffered from same issue after about 2 years of running perfectly, it would run for about 20 minutes then quit. Common solutions for: Snapper Lawn mower starts then stalls. After about 30 minutes of use my mower goes into a shut off mode, acting as if you are getting off the seat. I have a small John Deere riding mower. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. It will run on starting fluid, so it has to be a fuel problem. After about 20-30 minutes of good running, it just dies. It runs great for about fifteen minutes and stops. Remove the fuel if you will not use the mower for a continuous 30 days. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. I have a 15 year old Cub Cadet with a 12.5 HP Kohler engine. The carburetor might be clogged. I can start it relatively easily (starts after 10 seconds of cranking), and then it sounds perfectly ok to me, and continues to run for about 30 seconds to a minute, but somewhere in there it will just sputter and die. My lawn mower runs for 30 minutes dies can not be re started for 1-2 hours, then it happens all over. It is suggested to have your mower serviced at least once per year typically in the spring (if you’re in a colder climate). I am not good on the computer.. 01 - Carburetor. Lawn mower engines, including those on John Deere products, need the correct combination of fuel, air and ignition spark to keep running smoothly. While this isn’t a specific fix to the lawn-mower starting and then dying, it will prevent most of the similar issues with your lawn mower automatically as it will keep everything flowing through it cleanly and maintained. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. John Deere LX279 lawn mower. after about half hour it will start up and run for a little while. Once it hesisates i stop, put the emergency brake on, and open the handle bars out as if i am parking the mower, it then regains a little life, for a short matter of time. Let it sit for an hour or two and it starts and runs OK for another 20-30 minutes… Once you get to it there will be a small black (usually black) wire connected to the module. 01 - Carburetor. compression was still good and spark present, replaced the plug just to be sure it was not the issue. Runs for about 30-45 minutes and then dies. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. If you do not have spark when the engine dies out you’ll need to remove the engine shroud and access the ignition module. Take the lawnmower to a certified repair center for a thorough clean and inspection. Sadly, about halfway there the engine started to sputter and then died. Can you help me? Lawn Mower Starts Then Dies Mower Won't Stay Running The reason it starts and dies is because the engine gets a shot of gas from the choke operation (or primer bulb) - that's enough to get it running, but the blockage in the carburetor starves it of additional gas and then the engine stalls. Change the oil after every 50 hours of use or as recommended by the manufacturer. In this post you’ll learn the most likely cause of a mower engine stall after thirty minutes and you’ll learn how to test and fix it . The most common cause of a mower that runs for thirty minutes and the dies is a faulty armature. The carburetor might be clogged. Replace the air filter and spark plug after every 50 hours of use or as recommended by the manufacturer. 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