re: Any one on here good with lawnmowers?

My snapper does not have a fuel solenoid to isolate the gas draining into the engine , As a result, when gas float sticks open. the entire fuel tank drains into the engine eventually the crankcase. Engine does not like gas in crank case and really runs bad with lots of wet black crap out the exhaust. Rather than rebuild the carb, I installed a stop valve in the fuel line to carb and just turn it off when not in service. It's worked fine for the last two years with this approach.

If the solenoid on your mower is to prevent gas flow when not in use, when you disable it, consider a manual stop valve as a substitute. Ace hrdw will sell you the parts for 8.78 $