Loose idle screw...

[Riverrat43]

The lean-rich idle adjustment on my 79 Evinrude 25 vibrates out of adjustment as the motor runs. Is there a way to stop this? Once I get it set, it runs fine till it vibrates it's way back toward the lean setting. Perhaps a drop of gun tite or other such product?

 

[OBJ]

Re: Loose idle screw...

What ya' need to do is replace the needle valve retainer Riverrat. It fits in that hole where the needle goes. It's got a square slot to hold the retainer in place. Maybe yours is gone or just wore out. Take a look. It'l be a reddish plastic round thing with a square tail.

 

[captain spike]

Re: Loose idle screw...

i just replaced mine on a 1969 115ob i dont have the part number but if you can find joe reeves im sure he will be able to help you!!!easy to do and works awesome!!...

 

[OBJ]

Re: Loose idle screw...

These retainers are readily available from any Johnny/Rude dealer. PN 315232. Might cost all the way to a $1 + tax......cheap.

 

[Riverrat43]

Re: Loose idle screw...

Sounds like a plan...thanks guys.

 

[Riverrat43]

Re: Loose idle screw...

Got the retainer and put it in. Tried to count the turns that I made to take it out and then put it back in roughly the same position. Not sure I was exact. Now, I can turn and turn the screw and not see a noticable change in the idle. It's idling OK, smooth and all, but I made a bunch of turns toward the lean side and I'm not sure if I got it too lean or too rich. Should I turn it all the way in and then start backwards? Can I hurt it by having it set too rich or too lean?

 

[Riverrat43]

Re: Loose idle screw...

Never mind guys...think I have it. I decided to turn the screw all the way in and back it out 1 and 1/2 turns or so, as I've read in other posts. When I screwed it in to where it seated, it took exactly one and one half turns. I backed it out to where it was and left it...Idles fine now.