Prop question

[Jrdeinin]

i have a 1999 90 horse Evinrude Ficht that I am putting on a 18ft Mirro Craft flat boat
Wondering what diameter and pitch prop to start with. Prefer Stainless steal.
Any thoughts?

 

[Bondo]

Ayuh,..... Welcome Aboard,...... Is there a prop on it now,..?? If so, try it, 'n see where the rpms are,.....

 

[Sea Rider]

Yep, if there's none on the prop shaft try a Evinrude Prop Selector as to dial a starter prop which needs to be wot water tested to check if the motor revs at least around middle of its wot rpm range as loaded....

Happy Boating​

 

[Faztbullet]

Which lower unit does it have? Does it have a stock or batwing?(see pic)