ON TOP OF THE ANEROID THERE IS A FACTORY SEALED ADJUSTMENT SCREW.
REMOVE THE PLASTIC/ALUMINUM SEAL AND LOOSEN THE 10MM NUT,TURN THE SCREW COUNTERCLOCKWISE OUT AT 1/4 TURN INCREMENTS AT A TIME (NOT TO EXCEED ONE FULL TURN) UNTIL POWER IS RESTORED.
THIS ALLOWS GREATER FUEL DELIVERY AT LOW R.P.M., BUT ALSO ALLOWS MORE SOOT OUT OF THE TAILPIPE.
SIMPLE ADJUSTMENT GREAT RESULTS!
MF