Idle Adjustment Knob

[Rattle-]

On the side of my motor (1976 Johnson 9.9 Seahorse) there is an Idle Adjustment knob.<br /> It didn't seem to have any noticeable effect on the motor when we were trying to smooth it out.<br /> I finally bit the bullet and pulled the top off, to see what the heck the knob does.<br />Is this knob a Govenor of some type to protect against over-reving when idling, or what? I really need to know. I'm pretty sure you're gettin' tired of stupid questions..but this motor is a beautiful thing, and want to keep it running as it always has. Thanks.<br /><br />Kerry

 

[cajun555]

Re: Idle Adjustment Knob

Ralttlesnake, I think the knob your speaking of is the one on the side of the tiller. If so it is an idle adjustment stop so when you powerdown you don't stall. I've got a 9.5 and that what it does on mine. Hope this helps.

 

[Reel Appeal]

Re: Idle Adjustment Knob

The idle adjustment knob is only used for a "base" setting for idle.If you notice the cam(metal piece under the hood connected to the knob)is connected to the throttle shaft coming off the tiller handle.So,if you put the throttle to the "shift" or "start" position you can adjust the motor speed(on the knob) in relation to that setting.It will not protect from over-reving.An example of using the knob would be if the throttle was in the "shift" position and the motor stalled when shifting into gear,one could raise the idle slightly to prevent stalling,etc.