Re: Well, the Fastwin is "running"

[chris-p]

yeah, drop the gearcase and either use air or the garden hose to flush the system. Put some grease or oil on the grommets and water line before installing, prevents pinching which restricts flow.

You could drop the whole gearcase in water, and spin the drive shaft to ensure that the actual case pumps water. That will narrow down to whether your issue is in the gearcase, or the powerhead side.