Throttle range limited by remote (2000 40HP Johnson)

[guy48065]

I've had this pontoon for 2 years and only just noticed this during spring prep. I'm unsure whether the carb butterflies are Supposed to fully open--but mine don't. At neutral on my side-mount OMC remote the factory indicator marks on the cam & follower are aligned, with the tiniest sliver of light between. At full remote throttle, lever horizontal and feels like against a mechanical stop, the butterflies are about 75% open.

I don't know what RPM I'm getting because this is an older pontoon with no gauges.

Is my motor rigged incorrectly?

 

[Cat nip]

I had that issue on a 89 40hp johnson. I think there was another adjustment that it needed, maybe where the carbs all hook up togeather? Look up how to link and sync the carbs on a johnson and see if that works for you.