Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Carburetor is not passing fuel to the cylinder. The carburetor has an electric solenoid in the base of it, this solnoid has to have battery voltage to open it. Should have 12 volts with the switch on. Is it opening? For a quick test of the engine, remove the spark plug and put a teaspoon of fuel direct into the spark plug hole, re-install the spark plug and see if it fires for a few seconds. If it does, it is fule supply problem Either no fue to the carb, or the solenoid in the carb.
It's a generator powered by a single cylinder engine, just like all the rest. No I have not had the PH3100 to look at. But I see what the carburetor and parts are.
Did you check for voltage at the solenoid? If it has voltage, the solenoid may be stuck or bad. The solenoid gets power direct from the switch. It should have battery voltage as soon as the switch is turned on.
Let's see if we can find someone who can help! I will opt out. Sorry.