How is that for informational? A two-cylinder engine has a firing order of the number 1 cylinder first and then the number two cylinder. How complicated is that?
I mention this because I pulled the fuel tanks (the A has a 14 gallon main tank and a 1 gallon auxiliary tank that piggy backs on the big tank) last week and was looking up repair tips. It never occurred to me to ask about the firing order but in all dead pan honesty a blogger/poster pointed it out: 1 - 2. Makes me want to roll on the floor with laughter.
As for the tanks - when I drained the fuel for the winter globs of rust came out of the fuel line. So I pulled the fuel lines off of both tanks and tried to blow air through them. Nothing except that heavy headed feeling you get from an industrial strength balloon. The fuel lines are copper so the rust had to come from the tanks. There are methods of sealing old tanks to prevent rust-thru. I am going to be exploring those methods in the next few weeks.
1 - 2.