1980s merc 3.0 drains

Exotic4x4

Petty Officer 2nd Class
Joined
Jul 19, 2011
Messages
118
Hello all I've seen this has been posted a million times I've.read.through the threads and found some useful info . I bought a 1984 regal 185xl with a 3.0 from a boat dealer nice exterior terrible interior, has solid floors New carpet and needs a re upholester job. While takin on this challenge I re did the.engine cover and noticed 2 small drain plugs and a pet **** on the valve cover ( the dealer winterized the boat and shrunk wrapped it) so I wanted to put them back in the engine.so they didn't get lost in the.interior rebuild. I found 1 drain in the lower back of the.exhaust manifold and a block drain pet **** near the back of the block on the same side as the exhaust manifold.but I cannot seek the locate the last drain plug spot any ideas??? This boat is new to me. Thx guys! Also purchased a manual for it Friday. Should be here this week.
 

Exotic4x4

Petty Officer 2nd Class
Joined
Jul 19, 2011
Messages
118
Re: 1980s merc 3.0 drains

If anyone has a manual could you check and see.how many drain plugs are listed in the manual, I have one under the exhaust manifold and a petcock on the starboard side and cannot find the last one BUMP!!!!!!
 

fishrdan

Admiral
Joined
Jan 25, 2008
Messages
6,989
Re: 1980s merc 3.0 drains

The plugs should go in:
- the block below the manifold
- bottom of the manifold
- side of the riser
 
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