Overview
When trimmer line cannot handle thick growth, step up to this brush cutter blade. It slices through woody stems and tangled brush that would stall a nylon line, making it ideal for trail clearing, fence-line maintenance, and overgrown lot cleanup. Manufactured to factory dimensions for a straightforward swap.
Key specifications
- Blade diameter: 9”
- Tooth count: 20T
- Arbor: standard trimmer adapter
- Material: hardened steel body
Compatibility
This blade fits STIHL FS56RCE FS91R FS70R FS94R FS111R FS131 FS91 plus additional models that share the same arbor or mounting configuration. Check the compatibility chart for your exact model to confirm dimensions before installing.
Installation notes
Remove the trimmer head and mount the blade on the gear-head output shaft using the appropriate adapter plate and hardware. Tighten the retaining nut securely and check for wobble by rotating the blade by hand. Always wear a face shield, hearing protection, and heavy pants or chaps when running a blade attachment. Keep bystanders well clear of the cutting area.
Common questions
Q: Will this 9” x 20T chainsaw tooth blade fit my STIHL FS91R or FS131R trimmer without modification?
Yes, this blade is listed as compatible with the STIHL FS91R and FS131R, along with the other models mentioned. Before installing, make sure your unit has the proper brush cutter/blade-capable guard, thrust plate, and mounting hardware, since string trimmer setups sometimes need different blade accessories.
Q: Is a 9-inch 20-tooth chainsaw tooth blade a good choice for cutting thick weeds, saplings, and brush with my STIHL FS111R?
Yes, a 9” 20T blade is designed for tougher cutting than standard trimmer line and works well on dense weeds, heavy brush, and small woody growth. On an FS111R, it should perform best when used at steady RPM and with controlled sweeping cuts rather than forcing it into larger hardwood stems.
Q: What is the best way to install and maintain this blade on a STIHL FS56RCE or FS70R?
Install it with the teeth facing the correct rotation direction marked on the blade, and tighten it using the proper STIHL blade hardware while locking the gearbox shaft. For maintenance, check the teeth for damage after each use, keep the blade clean, and sharpen or replace it if you notice slower cutting, vibration, or chipped teeth.
