It's been a while since I ran a Fox .15. But if I remember you start out about 3 to 3 1/2 turns on the high speed and about a 1 1/2 on the low speed. If you have the older two speed carb.
Make sure you go to www.flightlinesolutions.com They have a lot of info on Fox motors at this site. Lots of trouble shooting info and fixes.
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