In a general manual I bought I found the initial
settings are
Low speed – 1 turn out
High speed 1-1/2 turn out
Doesn’t say which is which.
I’m guessing the long one is fuel for the main jet
and the short one is air for the idle/slow speed circuit.
As I don’t know and there are people here that do
it only makes sense to ask.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.