Re: 1985 Johnson 60Hp motor truning over very slow
Don't worry you'll have it back running in no time.
You can't see inside the jets & orfices to tell whether its gummed up. Old gas turns to varnish and takes a good soaking to clean it out. remove the welsh plugs & blast some cleaner through all the passages.
Be careful with those brass screws I mangled one good & never did get it out - this is one time when you have to use the right size screwdriver.
The connecting rail should just pop into place. Shouldn't really need adjustment - just make sure the throttle valves are parallel and move in synch with each other, from fully closed w/throttle in the idle position, to full horizontal (but not beyond) at WOT. The throttle cam needs to hit the cam follower roller precisely on the mark (or between the marks if your cam has two) when you push the throttle forward. That advances the spark timing just before the butterflies open, otherwise it'll just die when you try to throttle up. the cam follower is mounted with a screw in a slot on the bracket so it can be adjusted.
The red lever operates the primer valve - allows fuel to drain into the cylinders for a cold start - I can't remember now, but turned one way it's operated by solenoid, push the ignition key in to actuate it, turn the other way is manual operation.
Make sure the carb mounting gasket is in good shape so it won't suck in air around behind the carb.
I highly recommend the manual
meantime you can find a schematic for your engine from here:
http://www.evinrude.com/en-US/Accessories/Literature/?popup=true
follow the links - johnsons are in there too. hope it helps