Details Replacement foil and cutter bar assembly Fits the 8061 and 8547 Shavers Wahl Model #7031-100 Wahl Replacement Foil and Cutter Bar Assembly #7031-100 for 5 Star Series. Designed for the professional. Directions Replacement Instructions: Turn the unit off and remove the foil head by pressing the round button located in the right side of the unit. Remove the cutting bar, by gently pressing down on it and turning it 90 degrees. Return cutting bar to shaver by reversing this process and replacing the foil head.