John Deere 240 with 14 hp kawasaki motor starts to miss after 30 minutes of running...

John

New member
...motor? been to john deere shop twice. carb pulled & cleaned, all filters, spark plug, and ignition igniter on side of motor housing all replaced. wallet emptier and tractor still the same. runs great for 30 minutes than starts to miss and run rough. turn off blades and runs fine. engage pto and runs bad again. let it cool down 30 minutes and runs great.once it gets hot again it acts up again.cooler weather it takes longer to act up. so it seems heat and load are what bring on the problem. could it be this ethanol fuel??? tired of making the shop rich.
 
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