Guys, my 310c has recently developed a problem. When it is started for the first time (it's cold) it. Webapr 14, 2021 · the gas caps on these mowers deteriorate dropping rubber diaphragm parts into the gas tank that then stop up the fuel pickup. Siphon out the tank making sure to. Webfeb 14, 2015 · i troubleshot the fuel shutoff solenoid, backing it out so the tractor would continue to run and even disconnecting he electrical to the solenoid.