As Europe’s largest manufacturer of stump cutters and stump grinders, FSI Stump Cutters develops machines in close cooperation with FSI Partners and professional users. Their feedback shaped the FSI B21. With this model, we raise the bar in the compact segment and introduce features not previously seen in this class.
Safer Transport with Hill-Hold System
The FSI B21 features a unique hill-hold system that increases safety during transport. The system prevents the machine from rolling forward when you move it up ramps, over curbs, steps, or uneven terrain.
When you activate the hill-hold function, you can pull the machine backward with full control. The wheels stay locked and stable. This gives you safer and easier handling during loading.
Reduced Maintenance – No Daily Lubrication
We designed a fully closed bearing housing and lubricated it at the factory. It supports more than 1,000 hours of normal operation.
You no longer need to lubricate the bearings daily. This saves time and simplifies routine maintenance.
Simple and Fast V-Belt Tensioning
We mount the FSI Power-Cut cutter disc with a one-sided bearing housing. This design allows quick and easy V-belt tensioning.
You do not need to secure parallelism during the process. You complete service work faster and reduce downtime.
Proven FSI Features
The FSI B21 also includes the well-known features from the FSI B20 and B22. A powerful 14 HP engine with recoil starter delivers reliable performance.
The vibration-damped, height-adjustable handle improves operator comfort. A safety bar activates the cutter disc and ensures controlled operation.
The turn-table design with pivoting axle allows effortless side-to-side sweeping. Individual wheel brakes give you extra control.
Multiple accessible lashing points make transport securing fast and simple. A lifting eye supports safe handling. Original FSI teeth deliver efficient and consistent cutting performance.
Optional Equipment
You can add an hour meter with service alarms. It reminds you after 25 hours to lubricate the pivot axle and after 100 hours to change the oil.
A drawbar with ball hitch is available with a maximum speed of 10 km/h. It is not approved for public roads.
You can also order the FSI B21 in special colors to match your company profile. We offer standard RAL colors and provide additional colors on request.




