what about if you rev the engine? Will it rev? Or bog and die?
If you can't even rev it, start with a tune up for sure. Cap & Rotor, plugs, wires.
And, are you running fresh gas? If its old gas you'll want to put a can of drygas in there and add a few gallons of fresh. Gas starts to tarnish in only 1 year of sitting if it didn't have stabil in it. Open your gas cap and give it a whiff. If it smells all laquery you might need to drain/fill it back up.