'86 Evinrude 8hp idle adjustment knob

[jauguston]

The idle adjustment knob doesn't do anything to change the idle speed when I turn it. I would like to pull the twist grip off and see what is going on but I don't have the Special Tool No 390767 called for in my OMC repair manual. It is used to depress the retaining pins that hold the twist grip in place. Is there a "Home in the garage" way to remove it?

Jim

 

[jauguston]

Re: '86 Evinrude 8hp idle adjustment knob

I am reposting this to the top in hope someone can help me figure out how to get the grip off. Anyone??

Jim

 

[iwombat]

Re: '86 Evinrude 8hp idle adjustment knob

As you adjust this knob you should see the throttle linkage move (take the cover off) does it?

 

[jauguston]

Re: '86 Evinrude 8hp idle adjustment knob

No, their in lies the problem (-: It is sticky and hard to turn also but doesn't change the location the spark cam stops at low throttle. I have adjusted all the linkages per the OMC repair manual.

Jim

 

[iwombat]

Re: '86 Evinrude 8hp idle adjustment knob

And yet, the throttle actually works . . . hrm . . .

I wonder if you've got a set of stripped threads in the adjuster.

 

[iwombat]

Re: '86 Evinrude 8hp idle adjustment knob

I've never had a need to take one of those apart. Sounds like you do though. I can't recall if the manual gives any insights on tearing that apart.

 

[jauguston]

Re: '86 Evinrude 8hp idle adjustment knob

Unfortunately the repair manual is not much help. It says to use special tool number XXXXXX and pull it off. I have a idea I am going to try but I was hoping for some real experience.

Jim

 

[tashasdaddy]

Re: '86 Evinrude 8hp idle adjustment knob

goodle the part number and see what it looks like. may be you can improvise.