Newly acquired 1975 Mercury 850 85 HP outboard - Boating Forum
May 2, 2011 · Re: Newly acquired 1975 Mercury 850 85 HP outboard The ignitions should be the same. The coils are a different form and fit, as are the rectifiers. The battery-powered distributor-based CDI ignitions were on all inline six motors from at least 1973 until the first part of 1979.
What year is my merc 850 85hp motor - iboats Boating Forums
Dec 30, 2012 · If it is indeed an 85 hp, it would be: 85 1964 S&L 1648888 - UP From here: MERCURY OUTBOARD MODEL YEAR GUIDE 60 HP - 100 HP -- Mastertech Marine But somehow, your description of the colouring doesn't match up. If it is a 1964, I doubt it would have the welch plug as I don't think that started until the early to mid '70s.
CDI box for mercury 85 hp outboard - iboats Boating Forums
Apr 17, 2009 · Re: CDI box for mercury 85 hp outboard Time to get back to the basics. Don't make any assumptions. Test each of the electronics components individually as recommended in earlier posts. Narrow down the area of fault (electrical, fuel, mechanical) then address the …
1976 mercury outboard 850 85 hp manual - iboats Boating Forums
Apr 6, 2011 · Re: 1976 mercury outboard 850 85 hp manual I downloaded a $5 manual for my 650 at recrepairinfo.com. Not sure if it's a shop manual but it is much more detailed than my Seloc.
85 hp Mercury wiring | Boating Forum - iboats Boating Forums
May 8, 2009 · Re: 85 hp Mercury wiring The wiring is color coded on your Merc. The wires are a bit old. Yellow is starter solenoid, red is unswitched +12v, Stator wires are yellow/red, choke is grey, ignition +12VDC is white. ground is black, tach signal is brown.
Tuning up an 82 Mercury 850 85hp outboard - Boating Forum
Apr 18, 2011 · Re: Tuning up an 82 Mercury 850 85hp outboard Hello: I thought you should know that the 850 (85hp) Merc was discontinued in 1977. If yours is an 82, then it's most likely an 80hp. In 79 Mercury stopped putting a "0" at the end of the HP rating for the model #, so if it is an "850", then it;s a 77 or older. Craig
Best Mercury Outboard Ever Made - 1984 50hp 4cyl
May 20, 2016 · Mercury has made many engines of 2, 3, 4, and 6 cylinders based on common parameters of Bore and Strokes The 1973 - 1977 85 hp used a 66.6 cu in 4 cylinder block utilizing the power ported pistons. this engine used the same pistons as the 6 cylinder 150 hp and the 3 cylinder 70hp of the era.
1978 Mercury 85hp outboard - iboats Boating Forums
Jul 17, 2010 · Re: 1978 Mercury 85hp outboard could be a number of problems, need more detail,was it sitting for years? could be spark, could be compression, could be fuel. you may want to read through some of the previous post. it doesnt take much to destroy an engine in the driveway, also ground plugs when checking for spark or you may damage the coils, i have found there is a big learning curve on these ...
1978 Mercury 85HP No Spark? - iboats Boating Forums
Apr 3, 2009 · Re: 1978 Mercury 85HP No Spark? The trigger is the part in the dist. hsg. that fires the system, if you do the arc test on the top of the page and you have spark, the trigger is bad and ifyou don't the problem is the coil if there is voltage on the green wire or if there is not it's the switch box. Tere is no need for a tester.
1973 85 hp mercury outboard needs shift adjustment
Jul 18, 2008 · Re: 1973 85 hp mercury outboard needs shift adjustment Well thanks for the info , I didnt realize the shift linkage was on a pin with a cover that twisted that was my main concern thought it was a nut an bolt. an the holder had me confused didnt realize it poped up like it does well ive learned alot on here an really appreciate the knowledge ...