Looking for a labeled diagram of Merc 5.7L, mid 1980's

hawghead

Seaman Apprentice
Joined
May 10, 2010
Messages
42
OK, I under estimated how little I knew about inboards after I already had one. :redface: Its a 5.7L Merc Alpha one on a 20 foot Wellcraft Elite.

I am looking for a good labeled diagram or picture of a stock 350 inboard engine. Basically I am trying to self educate on my boat. I have done a lot of reading on hear and my manuals.

The manual has a lot of very zoomed in pictures that are labeled in the maintenance sections, but not an overal labeled pic/diagram of the engine. Yesterday I couldn't tell you where the thermostat was on my engine, after some reading I now can :D

I had an issue with my engine running hot while it was idling an when I called a service shop they asked about a good outflow of water from the cooling system, I couldn't tell for jack squat where to look. From what I can tell now, exhaust and 'water discharge' is through the prop? I am familiar with the "pee stream" of outboards, but pretty uncertain with these inboards on LOTS of stuff.

Is there a Mercs for dummies book?

I also need to figure out what size and pitch my prop is
Resolve the Tach issue
Then assess if it's performing up to snuff. Seems to run strong. I had 53 gallons of gas and 8 people in the boat, 3 of which were 10 and under. Conditions were rough and I suppose I was getting about 30MPH.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Looking for a labeled diagram of Merc 5.7L, mid 1980's

Have a look at the Adults Only Sticky at the top of this forum. That is about as close as we get to being a Mercs for Dummies book.
 

hawghead

Seaman Apprentice
Joined
May 10, 2010
Messages
42
Re: Looking for a labeled diagram of Merc 5.7L, mid 1980's

Thanks, I have been reading that stuff quite a bit.
 

hawghead

Seaman Apprentice
Joined
May 10, 2010
Messages
42
Re: Looking for a labeled diagram of Merc 5.7L, mid 1980's

OK, question....

In the attached pic that I found on another thread...what is the part in the top right with the orange sticker? It has a cap on it for adding fluid I assume?

Just wondering what it was. Learning as I go.
DSCF4720.jpg
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Looking for a labeled diagram of Merc 5.7L, mid 1980's

Power steering pump
 
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