Lauralee: Here''''s your fix.
AJS is right. I owned an MD2B for years, and after every fuel filter change, that''s what I did.
I you have a hand start crank (and you need one, since one of the beauties of these engines is their ability to start by hand) you can use that to bleed if you''re not comfortable with the starter. Just make sure you tighten the injector BEFORE you stop cranking or else air may get back in the system.
If the engine starts, but quits, bleed it again - sometimes you don''t get all the air out. if it still quits, you may have a leak letting air into the system. If you bleed it again and there''s more air bubbles, it''s probably a leak.