One important thing to remember- - - - -don't pour fresh gasoline into the tank and try to run the engine. The residue left in the tank from the last time it was run will almost certainly have gum and varnish in it that will make your valves stick in the guides and cause the pushrods to bend. Use an auxiliary tank for a gas supply until you can pull the tank and get it thoroughly clean. It's also a good idea to pour some lightweight oil or Diesel fuel into the cylinders through the spark plug holes and let it soak for a few days to free up the pistons and rings before you try to turn the engine. Do the first few turns by hand before trying to use the starter by using a pry bar at the flywheel ring gear. Good luck!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!