ORIGINAL: ameyam
Presuming ''spraybar'' means inlet to the carb. I think I will try the 55AX inverted (or at 225 Deg when seen from infront) as recommended by the manual. Just to cutout other variables, I will use my old 55AX rather than a new one. For the Topstar though, I am thinking I will try out someone's 91FS on trial basis before I buy one for myself
Will keep posted about the results.
Regards
Ameyam
Presuming the engine currently in the Topstar is OK, if you change engines without making sure the tank location and condition is correct, you'll be wasting your time. Hard to believe you couldn't open the fuel tank.
CR