Home › Forum › Ask A Member › 1959 Johnson 35 hp Super Quiet Carburetor Main Mixture Screw Threads › Re: 1959 Johnson 35 hp Super Quiet Carburetor Main Mixture Screw Threads
May 10, 2018 at 11:14 pm
#75730
Probably 1/4-40 but don’t try to take that to the bank.