The STIHL FS 251 is a high‑power gas brushcutter built for heavy‑duty clearing such as undergrowth, large areas and wooded lots.

Its 2‑MIX engine delivers 2.2 kW of power with efficient fuel use. The bike handle and double harness provide comfort and control during long shifts.

Recommended uses:

  • Wooded terrain, undergrowth, tough edges
  • Intensive mowing and seasonal maintenance

Key benefits:

  • Strong, durable power unit
  • Wide working reach with good handling
  • Comfortable bike handle + harness setup

Compatibility & consumables:

  • Cutting heads (optional): SuperCut® 20‑2, AutoCut® C 26‑2, AutoCut® 36‑2, TrimCut® 32‑2, DuroCut 20‑2
  • Line diameter: 2.4 mm (.095") / 2.7 mm (.105")
  • Grass knives: 230 mm 2‑tooth (40017133805), 4‑tooth (40017133801), 8‑tooth (40017133803)
  • Brush knife: 230 mm 3‑tooth (41127134100)
  • Circular blades – scratch‑tooth: 200 mm (41127134203)
  • Circular blades – chisel‑tooth: 200 mm (41127134201)
4147 200 0668

Data sheet

Form Factor
Bike Handle
Power source:
Gasoline (50:1)
Engine:
41.6 cm³
Weight (kg / lb)
7.6 kg (268 oz) (16.8 lb)
Engine power:
2.1 ⇆ 2.5 kw
Gas tank, Ounces (Liters):
25 oz (750 ml)
Target Material
Dense vege.
Grass & Edges
Reeds
Shrubs
Vegetation