STIHL FSA 90 Bike Handle Brushcutter (4863 200 0089)
STIHL FSA 90 Bike Handle Brushcutter (4863 200 0089) is a cordless option for mowing long grass and maintaining larger grassed areas. Its bike handle supports a natural sweeping movement, while STIHL ECOSPEED lets you adjust speed to the workload. Supplied as skin only with an AutoCut C 26-2 nylon mowing head; battery and charger are sold separately.

Battery Options
- STIHL ALLPRO AP 300.0 P battery (EA13 400 6523): newer ALLPRO battery option, sold separately.
- STIHL AP 300 S battery (4850 400 6575): legacy AP option, available only while remaining stock lasts.
The original recommended battery is the legacy AP 300. Legacy AP 200 and AP 300 S stock will not be available once sold out. AP 500 S is no longer sold by Betontools; runtime information is retained for existing owners. STIHL ALLPRO and legacy AP are distinct, compatible systems. Legacy runtimes must not be applied to ALLPRO models. A compatible charger is required and is not included.
Optional Metal Grass Blades
The supplied STIHL cutting-tool chart lists these grass blades for the FSA 90 / FSA 90 R group. Blades are sold separately, not included with the AutoCut-equipped machine.
- GrassCut 230-2, 230mm, 25.4mm bore (4001 713 3805).
- GrassCut 260-2, 260mm, 25.4mm bore (4001 713 3812).
- GrassCut 230-4, 230mm, 25.4mm bore (4001 713 3801).
- GrassCut 230-8, 230mm, 25.4mm bore (4001 713 3803).
Follow the complete approved cutting-tool combination in your FSA 90 instruction manual, including the specified metal-blade guard, mounting hardware and harness. Do not assume the line-head setup is ready for metal blades. Remove the battery before changing attachments. Brush knives, circular saw blades and shredder blades are not included in these recommendations.
Blade Fitting Hardware
Confirm the required thrust plate, rider plate, nut and guard against your exact FSA 90 before ordering. The STIHL blade fitting kit 4001 007 4400 is available for selected machines, but its fitment to the FSA 90 is not confirmed by the current kit listing. Contact Betontools before purchasing it for this model. It is not a universal adaptor or complete conversion kit and does not include a guard.
Key Features
- Bike handle for sweeping cuts across larger grassed areas.
- STIHL ECOSPEED speed control to match power to the work.
- Efficient EC motor for cordless mowing.
- AutoCut C 26-2 nylon mowing head supplied.
- Spacer bracket helps maintain clearance around plants.
- Double shoulder harness supplied for weight support.
- Softgrip control handle with control-lever lock.
- Safety locking lever to secure the controls between uses.
- Carrying ring for compact storage.
Follow the operating manual for protective equipment, including hearing protection where required, approved attachments and working conditions.
Specifications
- Model: FSA 90
- Part number: 4863 200 0089
- Rated voltage: 36V
- Power consumption: 0.7kW
- Cordless system: STIHL ALLPRO / AP
- Original recommended legacy battery: AP 300
- Weight without battery: 3.2kg
- Cutting circle: 380mm
- Standard cutting attachment: AutoCut C 26-2
- Length without cutting tool: 177cm
- Sound pressure level: 83dB(A)
- Sound power level: 92dB(A)
The original listing contains conflicting IPX information and attachment-dependent vibration figures without identifying the attachments. Refer to the instruction manual for the rating and vibration data applicable to your setup.
Legacy Battery Runtime Guide
Maximum figures retained from the existing listing for owners of the named legacy batteries. This is not a stock list and these are not ALLPRO runtime figures.
- AP 100: up to 18 minutes with line head or approved metal blade.
- AP 200: up to 36 minutes with line head or approved metal blade.
- AP 300: up to 45 minutes with line head or approved metal blade.
- AP 300 S: up to 56 minutes with line head or approved metal blade.
- AP 500 S: up to 67 minutes with an approved metal blade.
- AR 1000: up to 120 minutes with line head.
- AR 2000: up to 180 minutes with line head.
- AR 2000 L: up to 195 minutes with line head or approved metal blade.
- AR 3000 L: up to 290 minutes with line head or approved metal blade.
Actual runtime depends on speed, vegetation, cutting attachment and battery condition. Backpack batteries require the appropriate approved connection equipment.
Included Equipment
- STIHL FSA 90 bike-handle brushcutter.
- AutoCut C 26-2 mowing head.
- Double shoulder harness.
Battery, charger, metal blades and any additional fitting equipment are sold separately.



