1986 90 hp merc

[astroglass]

"someone is selling a used 198

"someone is selling a used 1986 90 hp merc for 500 obo, i spoke to him and he said that it ran fine once the throttle was opened a little, but had a hard time staying running during idling, he rebuilt carbs but thinks it may be a stator. I have a 1980 70 merc, that is torn apart. 2 questions, 1 - is the parts interchangeable between these motors and 2 - is this a deal to try and get him down to 400? any help would be appreciated."

 

[ibnfshn]

The stator doesn't have an

The stator doesn't have anything to do with it not idling. Most likely just needs a link & sync according to your manual.

 

[galamb]

"And to your other question -

"And to your other question - no, parts are not interchangable.

1986 model year was the year Merc redesigned their entire line - everything changed - iginition systems, displacement of the powerheads, gears - you name it.

There was another minor change in 94/95, but not as drastic. 1986 is really the dividing line between the "old style" and "new style" Merc's.

Parts from a 2009 90 horse 2 stroke (yes, still in production for sale mostly outside of the U.S. Market) will fit that 86 you are looking at, but as an example a 1983 90 horse is a totally different beast..."

 

[astroglass]

"Thanks Graham and IBNFISHN, i

"Thanks Graham and IBNFISHN, i was the one who posted about a 70 model with a bad middle piston and didn't knwo if i should rebuild or not, you guys have helped sway my decision on that on, i will part that motor out. as for the 90, i am going to look at it and see about haggling with him."

 

[galamb]

"Steve, if it's running an

"Steve, if it's running and looks like it hasn't been neglected, and the compression is decent (would look for at least 90-100 psi min) then 4-500 bucks would be a "good buy" in my opinion.

The post-86, 90 horse Merc is probably the most prolific (mid range) powered motor ever on the market...

Side note - when I was younger a "mid-range" motor was a 40 or 50 horse. Now with guys hangin' 850 pound, 5.8 litre V8 350 horse outboards on the back of their rigs, a 125 (which used to be a monster motor) is considered mid-range...

"