| backfiring is an indication that the carbs are too lean.
The big screw on the side is the idle speed adjust (the one with the knurles on it).
The air screw is the smaller one and it should be 3/4 to 1 tul turn out from gently ottomed to start with.
__________________ It aint broke, so I took it apart to find out why.  93 Wildcat 700 EFI w/ Comet Pro-4
80 Pantera 500 F/C w/Comet 104c
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