mercury 850 85 hp wiring diagram ? + learning bout specs on the motor

scottandcheryl

Recruit
Joined
Jun 12, 2010
Messages
4
we got given a 17.5 foot cobra ski boat with a mercury 85 horse 850 blue tin on the motor it was purchased new in canada thats all the info i have .....we need to replace most of the wiring from the boat to the motor and entering into the motor our problem is we cant figure out what year the darn motor is the sticker is long since gone and i dont know where to locate another place to look for that info we are hoping to enjoy this boat not pass it along to some body else any help is happily accepted
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: new bee needing help

Re: new bee needing help

Howdy, S&C.

Welcome to iboats. :)

That is a tough one. Some of our Merc-sperts will be along to help. This will move you up to the top.

Good luck. :)
 

scottandcheryl

Recruit
Joined
Jun 12, 2010
Messages
4
Re: new bee needing help

Re: new bee needing help

update i found a stamped number on the motor behind the throttel doo hickeys levers it is 7082080 under the flywheel on the left side of the motor looking from the back
the original sticker was removed or degraded by time
we are thankful for your help
scott
 

Bill Kilgore

Petty Officer 2nd Class
Joined
May 15, 2009
Messages
145
Re: new bee needing help

Re: new bee needing help

I think you have a 1976 year model per maxrules.com
 

scottandcheryl

Recruit
Joined
Jun 12, 2010
Messages
4
Re: new bee needing help

Re: new bee needing help

i looked at maxrules.com how did you come up with a 1976 ???
the 7082080 ?
thanks scott
 

76canaventure

Seaman Apprentice
Joined
Mar 27, 2009
Messages
32
Re: mercury 850 85 hp wiring diagram ? + learning bout specs on the motor

Hi there!
Your serial number is higher that 7071373, which is the start of 1976, but lower than 7091098, which is the start of 1977.
Regards,
 
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