Place poly tubing into crescent. Apply downward pressure until punch pin pierces tubing. Release. Wipe punch with fingers on occasion to remove resin build up. | Insert emitter or 1/4" barb fitting into the the barb holder. Insert into hole that was punched previously. | Install emitter w/tubing attached into small crescent slots on bottom of tool. While holding emitter assembly in crescents, apply pressure while inserting into punched hole. | Remove emitters just like a hammer takes out nails. While holding the emitter in the crescent, rack backwards until it is removed. |