Try opening the high and low speed needles a little bit more….1 on the high and 1 3/4 on the low. When I was starting my 1955 3hp Evinrude it didn’t want to stay running cold at the factory settings so I opened them up quite a bit and it did run. It would start with the choke but wouldn’t stay running. After it warmed up I was able to put it back to the factory settings and it ran well. Tried starting the next day and it wouldn’t start cold again so I opened the high speed to a little over 1 turn and it started fine so thats where I ended up leaving it. I think I ended up with 1 1/2 on the low and 1 1/8 on the high but all motors will be a little different.
