The part #'s maybe the same as the 3 JH. I have a parts breakdown for the 3JH and I can send it to you later when I get home.
I had to beg the dealer to print out the breakdown for me when I bought the motor
. Torrensen and others just show part #'s and not breakdowns.
The elbow fitting, I'd just file down the inside until you see threads and then pick out the rest with a sharp scribe and clean up with a pipe tap, 1/4" NPT if I remember right. Brass to aluminum
should be reinstalled with teflon tape. The elbow doesn't get hot enough to damage teflon (>600 degrees). I may shoot you a picture as well of the parts On my motor