Overview
Mounting a blade on your trimmer requires the right adapter and hardware, and this kit delivers exactly that. It replaces the factory adapter assembly with aftermarket components machined to the same tolerances, so your blade seats securely and runs true.
Key specifications
- Type: blade adapter and hardware kit
- Material: steel adapter plate with zinc-plated hardware
- Includes: adapter, thrust washer(s), locking hardware
Compatibility
Compatible with STIHL FS56RCE FS91R FS70R FS94R FS111R FS131 FS91 and related equipment. Before purchasing, make sure your machine’s model number appears in the compatibility list, since blade arbor sizes and bolt patterns can vary between models.
Installation notes
Remove the existing trimmer head or cutting attachment. Place the adapter plate onto the gear-head output shaft, followed by the blade and thrust washer. Thread the retaining nut on and tighten it securely. Make sure the blade spins freely without wobble, and always wear a face shield and leg protection when operating with a blade attached.
Common questions
Q: Will this blade adapter attachment maintenance kit fit my STIHL FS91R and FS56RCE, or is it only for the larger FS131/FS240 models?
Yes, this kit is made for the STIHL models listed, including the FS91R and FS56RCE as well as larger units like the FS131 and FS240. The main thing is that your trimmer is one of the specified models and is being set up for a brush cutter blade adapter arrangement rather than a standard string head only setup.
Q: I’m converting my FS111RX to run a brush cutter blade—does this kit include the maintenance parts I typically replace when the adapter hardware gets worn?
That’s exactly what this type of kit is for: refreshing the blade adapter attachment components that wear from repeated blade changes, vibration, and debris exposure. If your current hardware shows rounding, loosening, uneven blade seating, or excessive wear, replacing those adapter-related maintenance parts helps keep the blade mounted securely and running true.
Q: Do I need any special steps when installing this kit on a STIHL FS-KM or FSA135R, and how often should I inspect it?
Before installation, make sure the unit is powered off, the shaft is locked properly, and all mating surfaces are clean so the blade adapter hardware seats flat. After installation, check that the hardware is tightened correctly and inspect it regularly—especially after heavy brush cutting—for wear, looseness, cracks, or debris packed around the adapter components.
