Older mariner serial doesn’t fit any code

[LJMangler]

Bought a mid 80’s 12’ Sears Robuck Gamefisher that has a 5HP Japanese Mariner that I cannot I.D. for the life of me. The plate reads:
Mariner 5M
6E3 s 131451
There is also an N stamped lower on the plate. Motor looks brand new with the seller saying he put under 100 hours on it. There’s a bolt leaking oil when running though so looking to get some rebuild parts on order and get myself the correct owners manuals. Any help is greatly appreciated!

 

[Fun Times]

Your serial number seems to be coming up as a Mariner Outboard 1981 5 [M] model number 7005201.
Parts Group: 5 H.P.
Options:Manual start, short shaft (15”/381mm) driveshaft housing. Tiller handle steering
Model style: M.

https://www.marineengine.com/parts/mercury_marine_parts/sn/00131451

https://www.marineengine.com/parts/mariner-outboard-parts/5c/6e3102151-and-up-m

 

[boscoe]

I am seeing that it is a 1984 model year motor. Built by Yamaha Japan.

Should be the equivalent of a Yamaha 5SN or 5LN that was distributed within the USA.

 

[boscoe]

YAMAHA MANUAL STORE

www.yamahapubs.com

 

[LJMangler]

I am seeing that it is a 1984 model year motor. Built by Yamaha Japan.

Should be the equivalent of a Yamaha 5SN or 5LN that was distributed within the USA.

you are a guru! Thank you for helping new enthusiasts!

 

[Fun Times]

Yes, sorry, I should have checked the chart earlier on the year versus the computer search.

5 M	6E3-102151 - 6E3-103915	1980
5 ML	6E3-400101 - 6E3-401110	1980
5 M	6E3-103916 - 6E3-114195	1981
5 ML	6E3-401111 - 6E3-409040	1981
5 M	6E3-114196 -	1982
5 ML	6E3-409041 -	1982
5C M	6E3-124741 - 6E3-133011	1983
5C ML	6E3-415416 - 6E3-419479	1983
5C M	6E3-133012 - 6E3-140919	1984
5C ML	6E3-419480 - 6E3-423468	1984
5C M	6E3-140920 - 6E3-147265	1985
5C ML	6E3-423469 - 6E3-426330	1985
5C M	6E3-147266 - 6E3-152655	1986
5C ML	6E3-426331 - 6E3-428988	1986
5C M	6E3-152656 - 6E3-415415	1987