Home › Forum › Ask A Member › Corsair “Special Nut” › Re: Corsair “Special Nut”
December 23, 2017 at 1:13 am
#68884
Don’t know the whole answer, but the 509-3161 nut is for a 16hp. Very different gearcase. I’m suspecting the differences may be thread size, but have no idea if that is correct or not.
EDIT: Looking deeper, the model 509 (16hp) also uses a 509-3162 forked piece, whatever it is called.