It sounds like you flooded it while trying to start it.
Also I presume there is a carb with a float bowl. To use that much fuel it is very possible the float stuck open and the fuel just siphoned through the carb.
Troubelshooting any small engine
takes a logical sequence
1 - Spark -
Remove the secondary lead from the spark plug
, using insulated pliers hold the tip of the lead near a ground. Pull the cord and look for a nice bright blue spark. No spark requires repair. With spark, pull the spark plug
and check the tip. should be fairly clean, not oily and gapped correctly. You can attach the secondary wire, use your insulated pliers, hold the wrenching part of the plug against a good ground. Pull the cord and there should be a spark across the gap.
2 - Fuel -
Got any? There is usually an inline filter. It should be full of fuel. A friend had one that would slowly "drain" at higher power. Traced to a cracked tube on the inlet side of the filter allowing air to be sucked in.
3 - Air -
Air is needed in the right mixture with fuel. Idle problems are usually traced to a blocked idle jet. Problems at power could be related to an inlet restriction (dirty air filter)
In your case I suspect a stuck float. The "right" way is to pull the carb and clean it. Or replace the carb with an overhauls unit. An alternative to try is to get a carb cleaner and spray it in the carb throat. There is usually a vent on the bowl. Carb cleaner liberally sprayed in the vent could remove the gumming I suspect is causing the float to stick.