Merc 9.9 year???

[Lago86]

Any help with identifying the year of motor would be appreciated. The serial number is 0B338657. Half of the "0" and anything before it are unreadable. . I think it's a 1980-81 but some things don't seem right.

TIA

 

[flyingscott]

9.9

1988

M

B233200 - B385499

 

[Lago86]

Thanks!