Anyone know max RPMS on an 2004 90 HP Johnson?

outboardnut

Petty Officer 1st Class
Joined
Oct 27, 2006
Messages
323
I'm trying to help my father in law prop his pontoon boat.
It's a 2004 model J90SLSRM, 2 stroke.

He had a beat up OEM 391668 and said he would only get 5200 RPMS.

I have him a MI wheel 012047, 14x11, and he now turns 6200 RPMS.

Ok here is where something is a little off. The pitch and diamter I have for the OEM prop is 11 x 13. I think maybe the number is worn, and it is supposed to read 14 x 13.
Also guess the OEM prop is a cupped prop, as he claimed the OEM it would come out of the hole a lot nicer.

He want a new OEM prop.

BRP has the "hydrus" line which is supposed to be designed for pontoon boats.
My choices are 13 7/8 x 9,11,or 13.

I have no clue what the max RPM or operation range on this motor is. I don't have a single manual that covers this manual. If anyone knows it is greatly appreciated.
 

outboardnut

Petty Officer 1st Class
Joined
Oct 27, 2006
Messages
323
Re: Anyone know max RPMS on an 2004 90 HP Johnson?

update...
i found a chart

it says 5500 max

father in law wants 2 run it 6200

anyone if she will take it?
 
Top