Manual start, short shaft. Made in japan in 1978.
Your serial number is incomplete, there should be 3 numbers before the 'S'. They should either 648 or 690.
--how did you come up with the information??
HI; I just acquired a Mariner 8 and I don't know what year it is. The serial # is 647L69635. Can anyone help with the year of manufacture? Thanks, Ed V.