Help with throttle control rigging

[littlemess]

My SELOC manual doesn't really address rigging/adjusting throttle controls. My 79 Evinrude 25 hp (tiller) has so much slop in the throttle, it simply can't be right. In looking at it. I see (under the flywheel) a small roller which appears as if it should progress along a cam. Mine however rolls ever so slightly along the cam/plate (which BTW is most 2/3-3/4 of the throttle movement in the Tiller handle) Then the roller drops away and rapidly reaches max RPM... With very little throttle (tiller rotation) movement. So it seems the first 70%-80% of throttle movement does very little covering a range of 10% RPM and the last 20% of throttle movement seems to encompass a range of 80%-90% RPM.

What can I do to adjust this?

 

[F_R]

Re: Help with throttle control rigging

The roller is supposed to have all the slack out of it and make contact with the cam at the line that is stamped on the cam. The rest is all automatic.

And yes, the carb doesn't really open much until you get to almost full throttle and spark advance. That is supposed to be a fuel saving feature. So they say.