screw size for throttle stop 22 CID?

[jspringator]

My throttle stop screw vibrated out while I'm on vacation in Florida. What is the size and thread (fine or course) that fits this 1975 25 horse?

Thanks.

 

[jspringator]

Re: screw size for throttle stop 22 CID?

1/4 by 1 and 1/2, machine threads.