TO USE, CLAMP TAP OR THREAD GAGE IN CHUCK, TURN MOTOR ON, HOLD PART IN A CLAMPING DEVICE AND EASE IT ON TO THE TAP OR GAGE.  SINCE THE TAP IS DRIVEN BY A FRICTION TYPE CLUTCH, HEAVY FORWARD PRESSURE ON THE WORK PART WILL CAUSE THE TAP TO ROTATE RAPIDLY MAKING IT DIFFICULT TO START THE PART ON TO THE TAP.  THEREFORE, THE LIGHTER THE FORWARD PRESSURE EXERTED ON THE PART THE SLOWER THE TAP WILL ROTATE AND THE EASIER IT WILL BE TO START THE PART ON TO THE TAP.  (THE USE OF TAPS WITH NO MORE THAN A THREE THREAD CHAMFER LEAD WILL FACILITATE STARTING THE PART ON TO THE TAP).  CONTINUED FORWARD PRESSURE ON THE PART WILL THREAD IT ON TO THE TAP.  WHEN DESIRED DEPTH OF THREADING IS ATTAINED, PULL THE PART BACKWARD AWAY FROM THE TAP AND THE TAP WILL IMMEDIATELY REVERSE ROTATION AND THE PART WILL UNTHREAD OFF THE TAP.

 PILOT LIGHT SWITCH REMINDS YOU TO TURN OFF MOTOR WHEN NOT IN USE.

THE ROTATING MECHANISM IS DRIVEN BY A DRIVE RING WHICH IS AVAILABLE IN TWO DIFFERENT HARDNESSES DEPENDING ON THE PRESSURE REQUIRED FOR THE OPERATION BEING PERFORMED.  FOR SMALL DIAMETER THREADS OR LIGHT STOCK REMOVAL USE THE NEOPRENE 60 DUROMETER BLACK DRIVE RING [PART #BB-7].  FOR LARGER DIAMETERS OR GREATER STOCK REMOVAL USE THE URETHANE 90 DUROMETER ORANGE DRIVE RING [PART #BB-7HD].

TO CHANGE DRIVE RING: UNPLUG MOTOR, THEN UNLOCK TWO MOTOR BASE CLAMPS [PT. NO. 17] BY LOOSENING TWO HOLD DOWN SCREWS [PT. NO. 16], PUSH DOWN DETENT PIN [PT. NO. 18] AND SLIDE MOTOR BACK OUT OF DRIVE HOUSING ONLY UNTIL DRIVE SLEEVE [PT. NO. 6] IS FULLY OUT FROM UNDER THE COVER PLATE [ PT. NO. 8].  REMOVE OLD DRIVE RING [PT. NO. 7] BY INSERTING A SMALL SCREWDRIVER BEHIND THE OLD DRIVE RING AND FORCING IT FORWARD OVER FRONT SHOULDER OF DRIVE SLEEVE.  NEXT, PUSH NEW RING OVER SHOULDER BEING SURE IT IS FULLY SEATED IN GROOVE OF DRIVE SLEEVE.  SLIDE MOTOR BACK INTO HOUSING UNTIL DETENT PIN IS AGAIN ENGAGED IN LEFT SCREW SLOT IN MOTOR BASE.  RETIGHTEN TWO MOTOR BASE CLAMPS BY TIGHTENING HOLD DOWN SCREWS [PT. NO. 16] SECURELY.  RE-TAP-ER IS NOW READY FOR USE AGAIN.

IMPORTANT: THIS UNIT IS INTENDED FOR RETAPPING A THREAD THAT HAS ALREADY BEEN CUT AND DOES NOT HAVE ENOUGH DRIVING POWER TO CUT A FULL THREAD.  ALSO IT CAN ONLY BE USED FOR RIGHT HAND THREADS.  PRICE ON APPLICATION FOR SPECIAL REVERSING SWITCH FOR USE ON LEFT HAND THREADS.