Can't find parts for my 1973 7.5!

[IsaacPN]

Hey guys, I'm new to the forum here. I recent got an old mercury 7.5 2 stroke for 30 bucks. It runs good once it gets started, however it has a massive oil leak out of the prop seal. Now I have been able to find a seal, but I would like to be able to find a kit in case i need any other o rings or seals. I can't find one anywhere for a 1973. Does anyone know of one? Also if anyone has a link to a socket for that pesky retainer nut that would be great as well.

 

[tpenfield]

It appears that the Sierra 18-2628 seal kit may fit your motor, even though it says it is for 1975 and up. iBoats.com should have it.

Old Merc's and a few other places may have the retainer nut tool
https://www.oldmercs.com/category_s/374.htm

See below for what it looks like . . . It is pricey . . .

 

[racerone]

Piece of pipe and weld some key stock on it.----Or piece of pipe and grinder to leave 2 or 4 lugs.

 

[IsaacPN]

It appears that the Sierra 18-2628 seal kit may fit your motor, even though it says it is for 1975 and up. iBoats.com should have it.

Old Merc's and a few other places may have the retainer nut tool
https://www.oldmercs.com/category_s/374.htm

See below for what it looks like . . . It is pricey . . .
View attachment 394904

Thanks for the response. I did see that kit and was hesitant to buy it for that reason. Maybe I will take a gamble...

 

[Chris1956]

You might check the threads on the gearcase. After some time, they seem to fade. That makes it hard to install the retainer after the seals are renewed.