40HP 1993 Evinrude Max RPM?

[cmb3366]

I've got a 40HP oil inject Evinrude on my 17' bass tracker. Its propped 11-3/4", 17pitch. What is the max RPM I should run the engine at for normal cruising?

I ask this because the engine currently has no problem reaching 6000RPM, but that just seems high to me in any situation, and particularly with that prop.

 

[bgbass.1]

Re: 40HP 1993 Evinrude Max RPM?

should be around 5500

 

[Silvertip]

Re: 40HP 1993 Evinrude Max RPM?

That engine likes 5800 rpm and even 6000 won't hurt it. If you are getting those numbers with a light load, I'd leave it alone as it would be to your benefit in heavy load situations. You can always throttle back a little. But if you change things and now begin lugging the engine, you can't throttle up to compensate if you are already at WOT. My previous boat had a setup similar to yours and it ran 5800 - 5900 RPM on long runs for eight years with no issues whatsoever.