Saving Old Seagulls

could anyone tell me the correct size thread for the gearbox housing of a forty featherweight, unfortunately one I have been tasked to work on has had the threads drilled and would like to see if I can repair it before trying to source another. many thanks in advance.

Hi thanks for getting back to me, these are the photos I managed to get minus the bits I have stripped off so far to see where the spark issue may be.

On the nameplate it has JLO Rockwell model L77L, not sure if that helps?

I have just managed to acquire a Seabee 4 outboard with spark issue and wondering if anyone knows of where I can find any off manuals or instructions to begin stripping it apart?

Hi everybody I have recently been working on a forty featherweight and sorted a few issues it was having.I have also converted it to run 25:1 but now it is back together I have a couple of issues:
1. I lose water flow on low revs and have to increase to get water flow to return.
2. when running ...