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How to Replace Blades in an Oster Clipmaster

| Updated September 26, 2017

Things You'll Need

  • Replacement blades

  • Phillips-head screwdriver

Many owners of horses, sheep and cattle turn to the Oster Clipmaster as a grooming tool for their animals. Over time the blades inside the Oster Clipmaster will become dull. You can replace the blades and ensure an even cut when clipping your animals. The Oster Clipmaster has a blade tension screw that you must loosen before replacing the blades. Failure to loosen the tension screw can result in damage to the unit and improper tensioning of the blades.

Disconnect the Oster Clipmaster power cord from the wall outlet. Locate the blade tension thumbscrew on the top of the Clipmaster. Turn the thumbscrew counterclockwise to loosen the blade tension.

Turn the Clipmaster over and locate the two screws that secure the blades to the Clipmaster. Loosen the screws with a Phillips-head screwdriver and pull out both the cutter blade and the comb blade. The cutter blade sits below the comb blade.

Locate the two small nibs or tabs on the Clipmaster head that protrude upwards where the blades fit into the head. Position the cutter blade, the smaller of the two, over these tabs. The curve of the cutter blade should face upwards when placing the blade in the cutter head.

Slide the comb blade over the cutter blade and under the retaining screws. The comb blade has two notches that will fit around the screws. The engraved manufacturer's details on the blade should be facing you. Hand tighten both of the retaining screws.

Turn the Clipmaster over and measure the distance between the end of the comb blade to the end of the cutter blade. That distance should be between 1/32nd and 1/16th of an inch. Tighten the blade retaining screws when you have the proper distance between the two blade ends.

Adjust the tension by turning the thumbscrew counterclockwise until you feel resistance. Turn the thumbscrew clockwise until you feel tension, then make another half turn.


  • Always unplug the power cord on your Oster Clipmaster before making adjustments or repairs.