76 Merc 850 Thunderbolt water in lower unit.How/Why happened?Am I getting scammed?

mikemonger

Recruit
Joined
Oct 29, 2008
Messages
1
On August 16th 2008 I bought a 1991 Eurocruiser with a 1976 Mercury Thunderbolt 850. The seller said that it was winterized in the fall of 2007. He also said that the motor was completely gone through in 2007. He did not specify and I did not ask if this was the Spring or Fall of 2007 (assumed that it was fall). The boat was not used at all in 2008 until I bought it. When a motor is "completely gone through" what exactly does this mean?
Took the boat out that first weekend and used it every weekend (for fishing) until 2 weekends ago. Every time out it ran exactly like it did the first time I took it out. I had intended to check the lower unit oil, but being unfamiliar with boat motors, I could not locate the plug (though I did not look very hard). I assumed that since the motor had been completely gone through and that it had been winterized that everything was as it should be. I took it in yesterday to get winterized. I got a call today saying that it would not go into forward or reverse and that the prop moved freely by hand. I was also told that when the plug was removed from the lower unit that only a small amount of water (no oil) ran out. So, my questions are as follows:
1)What could be some reasons for this and if the motor was "completely gone through", should have this happened?
Also, if it was gone through, and the shop that did that work is now telling me that I have problems, could they be held responsible for not going thorugh the motor completely or correctly?
2) why did the motor run exactly the same every time I took it out (I took it out about 8 times, but put very little run time on the motor and the majority of it was at trolling speed) but as soon as it got to the shop it wouldn't go into gear?
3) am I getting scammed by the repair shop (unfortunately, I am an outsider in a small town and don't really have any place else that I could take it)
4) if this is legitimate, what kind of damage am I looking at, what kind of parts will I probably need, am I going to be able to locate these parts and what kind of cost am I looking at for these repairs?

Please help!
Any and all information would be extremely helpful and greatly appreciated!

Thank you
Mike Monger
mikemonger@hotmail.com
 

Yepblaze

Lieutenant Commander
Joined
Jun 1, 2001
Messages
1,686
Re: 76 Merc 850 Thunderbolt water in lower unit.How/Why happened?Am I getting scammed

I don't know if you have any extra special contractual agreement on your purchase, but it sounds to me like at this point, you might as well suck it up and get on with the business of having the lower unit pressure tested to see where the offending leak has occurred, and have it repaired.
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: 76 Merc 850 Thunderbolt water in lower unit.How/Why happened?Am I getting scammed

A unit that is not full of oil,water or a combination of both has probably been drained for winter and not refilled, there are still marinas out there doing it that way believe it or not. So probably that why is was not full, regardless of the fact that's a poor way of doing it, most manuals ands marine facilities tell you to always recheck the unit in the spring before using it. That puts the responsibility squarely on the shoulders of the user, whether he likes it or not. So I am afraid you eat this one friend.
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: 76 Merc 850 Thunderbolt water in lower unit.How/Why happened?Am I getting scammed

If the LU was drained and not re-filed, then it should not have had a small amount of water in it.

I've found units no oil and a small amount of water, traced the fault to a poor or missing gasket on the drain screw. Units pressure tested fine, and I gave the owners the option of replacing the gasket or resealing the case.

Instruct the shop to pressure and vacuum test the case to determine the cause of the leak, then repost.

Most probably, you will just need to reseal the case.
 
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