75 hp Mariner

[tsubaki]

Got a 1994 75hp Mariner that is putting out up to 17.25 volts constant at mid to high rpms.
This seems very high to me. Is this correct?
If not, does this sound like a regulator or is it a stator or trigger problem?

Also got a voltage leak somewhere.
When hooking up the battery, a slight arc can be seen at the battery post while connecting.
Is this possibly a starter solenoid, trim relay or something else?

[tsubaki]

Allright FERM, I know you got the answer.
I never bought a book on that thing, need to get one this week.

[THEFERMANATOR]

Haven't worked on one of them in many moons, but sounds like a bad rectifier/regulator. If it has factory trim and tilt, it should have a regulated charging system that should cut off around 14.8 volts. If the diode failed in it, it could allow it to back feed and drain your battery and cause the arc your seeing. You can try disconnecting the regulator and see if the arc goes away when you hook the power up. That would tell you if that is where your problem lies. I'll try and find some more info for ya.

[tsubaki]

Thanks, didn't have any idea that would cause the leak also.
Gonna get a book this week and compare stuff.

[tsubaki]

By the way, this is the booger in question.
AT $127.00 plus shipping.
http://i175.photobucket.com/albums/w159/tsubaki3/194-5279.jpg

[THEFERMANATOR]

I don't have a book on one myself either, but from what I'm finding it looks like yours may be an unregulated system. Do you know the engine model number?

[tsubaki]

I've looked and it is supposed to be regulated, let me get the model #.
Be right back.

[THEFERMANATOR]

OK then, your regulator should look like this one I believe. If so then it is a standard MERC part. Try disconnecting it to see if your arcing stops.

http://www.cdielectronics.com/ImgProc.aspx?image=/Portals/0/ProductImages/194-5279.jpg&size=400&M=1&W=/watermark-3.png

[tsubaki]

Og014821


Well the G won't capitalise.
OG014821

Must of been my retardartion.

[tsubaki]

man, they don't like the copyright stuff on yours.

[THEFERMANATOR]

Yep, that's a standard 16/40 amp regulator. The 16 amp charging system uses 1, and the 40 amp V6 uses 2 of em. Try unplugging all of the connections at it and see if that stops your arcing. The blocking diode inside could be bad and would drain back to ground all of the time. That regulator style though should peek out at 14.2 volts. Clean your grounds first as a poor ground could cause ALL of your problems.

[tsubaki]

The regulator was mounted next to the oil pumping system (plastic). Now removed, it's now mounted on the intake cover (plastic) and the ground connected thru the mounting bolt.
Don't hold your breath, I'll get to this soon....
THANKS, Benny