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Per the parts page for my outboard it has 63V-85540-00-00
C.D.I. UNIT ASSEMBLY, which I assume will have the automatic spark advance?

I have compared diagrams and every part is the same, including jets and carb parts, except for the reeds. The reeds are the only part I see that has different part numbers. The reeds on a 15 seem to...

Been looking at all the 40 Yamaha conversions and mods and it got me thinking. I acquired a 1996 Yamaha 9.9MSHU that I have on a 1432 Jon. Been thinking I might as well play around with it and see...