Stihl Brush Cutter String Cutter Installation

This Stihl Brush Cutter series of yard care tools allows you to tend to your yardwork with a variety of attachments. The Brush Cutter offers blades for mowing larger areas, blades for cutting down thick brush and small tree limbs and blades for trimming hedges. The Stihl Brush Cutter also gives you the option of three different string trimmer head styles. With so many different attachments available, it's important to know how to properly install the string cutting heads on the machine.

Stihl string cutter head

Instructions

- 1
  Block the drive-shaft on the Brush Cutter by inserting the stop pin that came with the trimmer into the housing on the right side of the gearhead. Apply mild pressure to the stop pin and rotate the output shaft until the stop pin slides into position and prevents the output shaft from turning.
- 2
  Unscrew the nut on the output shaft using the combination wrench that is included with the Brush Cutter. Fit the wrench on top of the nut while the stop pin is still in the gearhead and turn the nut clockwise with the combination wrench. Remove the rider plate and the thrust washer from the output shaft.
- 3
  Place the string trimmer head onto the output shaft. Position the thrust washer on top of the string trimmer head, ensuring that the convex side sits inside of the string trimmer head. Thread the nut onto the output shaft counterclockwise and tighten it securely with the combination wrench. Remove the stop pin from the gearhead, completing the string cutter installation.

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