Iowa Gator
New member
I too have a problem finding out the year of a 6 hp merc I have here, the serial # is 3459896 and has 6hp marked on the side and 60 on the hood, if I run this number on the parts list search it comes back number not found, I guessed it was a 1968 but it has Thunderbolt Ignition on it, any help will be apprecaited as is the other fine information I get from going on this forum.