Yamaha 55BE 663 L (B)

[Malcolm Gray]

Hi, I'm trying to trace the year of manufacture for my Yamaha 55 which came with my boat. I've tried looking up the various lists but they seem to contradict each other. Ultimately i'd like to track down a service manual and parts list. I've seen some which are close but not quit right. As you can see I've attached a couple of pics to help. Any information on this would be greatly appreciated.
Thanks in advance for any help given.

View attachment 17583View attachment 17584

 

[mattzmojo]

see post below

 

[mattzmojo]

Hey, I found this chart that shows codes for motors that are Japanese mariner models. The 663 code is in there which means it could be 1974-1979. see attachment.

 

[boscoe]

The numbers following the 663L prefix can be used to determine the year of production.