I recently purchased a used Yardman as a backup to my new Troybilt and it stalls after about 20 minutes of mowing. I replaced the starter solenoid on advice from a friend after jumping across the pos/neg and it started. After replacing it I mowed again and after about 20 minutes the same thing happened. I jumped it across pos/neg again it started, but this time I parked it and went back later and it started. I guess it doesn't always mean a bad solenoid if you can jump across it and start it!
Anyway I have replaced fuel filter, shortened and rerouted the fuel line, added fresh gas, removed and cleaned the carb, and still the same thing. Could it be the safety switch getting hot or the fuel solenoid? I haven't tried either one yet and haven't checked the spark, but runs fine for 20 minutes so I doubt spark plug. Thanks for any advice!
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Update! Replaced spark plug and air filter is new. Also I tried pulling choke slightly when going under an incline as it started stalling and the engine smoothed out and it kept running. I read on another post that maybe the fuel filter is too small. I replace what I thought looked like a very small solid color filter that was barely bigger than the fuel line with a small clear normal looking filter I wonder could this still be too small.
We are having the exact same problem. Did you ever get this resolved last year?
I am having the same problem with a craftsman mower hVE REPLACED THE IGNITION COIL disabled the antibackfire solinoid on the bottom of the carb i have decided it has to be something elec. that heats up am thinking about doing away with all the safety devices and wireing it like the old mowers one wire from the switch to the coill and two wire to the starter it is so frustrating to mow for 5 min.
I am having the exact same problem with my Craftsman 42" riding mower sputtering out after mowing for about 15 minutes. It will start up again if I let it cool down. Also, it will run longer without engaging the blades. I've had this mower for 10 years and only recently started having this problem. Had a new carb installed but it's still doing it. Repairman is going to replace the coil. You mentioned putting in a new coil on your mower... how did that work out for you? Thank you.
I am having the exact same problem with my Craftsman 42" riding mower sputtering out after mowing for about 15 minutes. It will start up again if I let it cool down. Also, it will run longer without engaging the blades. I've had this mower for 10 years and only recently started having this problem.
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