If you filled the cylinder with gasoline remove all the spark plugs and disable the spark power.
Crank it over and all the fuel will come flying out.
reinstall the spark plugs and CHANGE THE OIL. the oil is gas deluted now.
get the spark set up on the TDC ont he fireing stroke not the overlap.
5psi fuel pressure. more is not better. it will flood with more than 7psi.
this must be your first time.