Originally Posted by Nos4r2
Torque setting for the prop nut for my 50hp Mariner is 55ft/lb-I'd asssume it's going to be around the same on most outboards. In other words, do it up bloody tight!
Not on Johnsons anyway - the figure I quoted for mine was from the "ofishul workshop manual" and if you did the prop nut up very tight the nylon washer under the nut would just split.
I was surprised it was so low, but I suppose the torque from the shaft is taken by the splines, and the thrust force by the metal thrust washer in front of the prop, so maybe it doesn't need to be tight. Other engines may of course be different again, no idea about Hondas.