115HP Mercury TOP (Tower of Power) questions

[derbsinalaska]

Hello, new here. I recently acquired a 1982 Bayliner 1600 Cobra (the closed bow one, not the bowrider) in amazing shape (no rot!!) paired with a 115hp Merc TOP. I have the serial number, but can't find any info about the year. The serial is 6128975 and the tag mentions the Brunswick Corp and Fond du Lac, Wisconsin, so that ballparks it around 1975. I've attached a picture of the motor to this post. Can anyone give me more info on it by chance? Thanks!

 

[Bobbywolf]

Your Mercury serial number puts it in "Serial Group #7" (sn 6051526 to 6262960). These were produced in 1980 & 81, if AI is to be trusted. There is a chart here that puts it at 82 (https://maxrules.com/models/Merc_model_files/115-150.php). This could very well be the original outboard to your boat.

The exact year isn't really that important, as any parts ordering is done by SN.

 

[jimmbo]

If it is an 82, that would be the yr Mercury started Prop Rating the I6, and the Serial Number would be critical for a lot of Parts
Mercury used pretty much the same Cowl Decal 1980-1983