AV Plate > Water Flow

[Max...]

2006 model 15 is 5000 to 6000.

Boatinfo - Mercury Service Manual for 6-8-9,9-10-15 hp

I've always understood you want it working at close to max RPM at WOT but without going over of course.

[SIBRider]

You want it in a sense that you have spare capacity to increase load, or respond to adverse weather, or go faster, etc

[Max...]

Originally Posted by SIBRider

You want it in a sense that you have spare capacity to increase load, or respond to adverse weather, or go faster, etc

I don't understand?