You have to make sure that you do not loose the thrust washers that go on the ends of the trans shafts. They will either stay on the shafts, stay in the cover you remove, or will fall somewhere. There are 6 I believe.
yeah, also make sure your petcock/fuel valve is in RUN or at least RESERVE. As a noob I make this mistake all the time. I like to turn it to OFF when I quit for the day, and forget the next day to switch it back.Keeps dying and/or sputtering after starting it: IT AIN'T GOT NO GAS IN IT, to quote the guy from the movie Slingblade.