Or remove the air cleaner and spray some wd 40 into it. With someone cranking. It should start and by judicious application of more wd 40 keep running at least until fuel is up and air driven out of the base of the injection pump.

These starters are not really designed for continious cranking like mentioned. You may or may not get away with it. It also may take a really good battery to last for 45-60 minutes of cranking. I would try the spray.