Info on old Kiekhaefer / Mercury inline 6 outboard

marinegundoctor

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Aug 11, 2001
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I need some info on an old outboard. It came with the boat (for $200) I got. It is an in-line 6. The only ID I can find is "KIEKHAEFER Corp.", and Kiekhaefer/ Mercury. Also on the front of the engine cover, it say "Merc 8 50", with the 8 larger than the rest. The serial number is 1625142. It has sat for a year. I would also like to know (or where I can find) what the fuel mixture is, as I'm trying to start it up. Thanks,<br />Rusty
 

Walter

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Jul 3, 2001
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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

Dang...the one time I need a serial number cross reference and don't have one.<br /><br />Your Merc 850 could be one of three models. Either a 1962 (76 cubic inches) or a 1963-1964 (90 cubic inches). The serial number will tell which...but like I said...I don't have that info. In any event, I'm confident your engine would run just fine on a straight shot of 50:1 fuel/oil ratio. Just be sure it's fresh 87 octane fuel with a quality TC-W3 rated outboard oil backer.<br /><br />Sorry I couldn't be more definitive with the model year. I just gotta get my references updated....<br /><br />Walt
 

marinegundoctor

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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

Thanks, Walter. Hopefully I'll be able to get this thing started after sitting for a year.
 

marinegundoctor

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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

Oh, one other thing. Can you tell me what horsepower this thing is?
 

Walter

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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

Geez...the one piece of info I DO have...and forgot to post it. Once again...sorry. It's the heat...or the wine...or the combination of...<br /><br />Your Merc's crankshaft HP rating is 85 hp.<br /><br />Walt
 

fone_man

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Jul 8, 2001
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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

marinegundoctor & Walter:<br /><br />With info provided, research has found you have in your possesion a:<br /><br />850 (85.0) 1460999 - 1648887 1963<br /><br />
cool.gif
<br /><br /><br />------------------<br />"Keep It Between The Bouys" & "Good Luck"!!!<br /><br />fone_man
 

sws80280

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Jul 26, 2001
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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

From what I could find it shows that Merc. motors with ser. nos. 1460999 thru 1648887 were 1963, 85 h.p. 6 cyls.<br /><br />------------------
 

Walter

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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

As McCloud used to say...<br /><br />"There ya go!"<br /><br />Let's hear back from ya when you get her fired up!<br /><br />Walt<br /><br />PS It's color is Phantom Black...right??
 

marinegundoctor

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Re: Info on old Kiekhaefer / Mercury inline 6 outboard

Thanks for all the info guys. I'll let yall know when she's runnin'. Oh, and you're right, Walter, it is phantom black. Running or not, I figured the motor, boat, and trailer were a good deal for 200 bucks!<br /><br />Rusty
 
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