Noise in neutral gear.

[Stiffen68]

I am a New member From Sweden.
I replaced the Impeller in the df90a -2009
The Idle speed has increased about 50 rpm.
There is a whining noise in Idle speed, in neutral gear.

[boats.net]

If it's a 25" shaft model then may need to put some grease on drive shaft where drive shaft bushing inside housing rides on drive shaft.