New lower unit

gavindiver

Recruit
Joined
Jul 29, 2013
Messages
3
Hi
Could anyone help me ? I have 2x Mariner 60 2 stroke bigfoot outboards dated 1996
I need to buy a lower unit for one of them but I am unsure what units will fit.
S/N 0992164 & 09924909
Is it also the case that a mercury unit will fit.

Thanks in advance
Gavin
 
Last edited:

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: New lower unit

Here is the parts list for both s/ns:

50/55/60 JET 45 - Mercury, Mercruiser, Force, etc. Parts Lookup

Do you know the p/n of the one removed and if you have 3/6 jaw? If not you can determine it by the design reference under GEAR HOUSING CHART (60 SEAPRO/MARATHON/BIG FOOT)

The service manual you require is p/n 90-817643R1 and if you don't have it, I can send you a copy if you send me a PM with an email address.

Gerry
 
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Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,938
Re: New lower unit

1996 is a 3 jaw and the only years that are a direct replacement are 1995-1997,if you go aftermarket thats a SEI s90-205-B20M but count the spline and measure driveshaft OD as they had 11 & 14 spline crankshafts. The SEI unit is 11spline and .750 OD and you have to change shift linkage and throw arm for it to work.
 

gavindiver

Recruit
Joined
Jul 29, 2013
Messages
3
Re: New lower unit

Wowzers:D

Very helpful Gerry & Faztbullet & well done this forum.
e-mail incoming Gerry
 
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