Engine slows and almost dies when mowing under full load. It feels like running out of fuel, slows rpm and as it nears stopping may have faint, slight backfire. I replaced both plugs and fuel filter. No change. Not sure how to proceed. It happens after getting fully hot when mowing several minutes. If I stop the blades and back down the throttle, it will continue to run but surges a bit. If I shut it off and wait a minute, I can restart and mow a few more minutes under load until next occurrence. What electrical component could be failing when hot?
I would start there. Either the cooling fins are packed up or most likely a carb/fuel tank/fuel line and so on issue. Fuel tank plugged up? Solid stream of gas AT the carb inlet?
