STIHL Helical Spring | 0000 997 0606

Specifications & Dimensions

Outer Diameter: ~41.5 mm (1.63 in)  
Inner Diameter: ~36.1 mm (1.42 in)  
Material: Wear-resistant high-strength spring steel  
Part Type: Internal compression / return tension spring

Primary Function
Provides return tension for the bump-feed line advancement mechanism. When you tap the head against the ground to release more line, this spring pushes the spool back into place to prevent uncontrolled unraveling.

Compatibility Trimmer Head: STIHL AutoCut C 26-2  

Trimmer Models (equipped with AutoCut C 26-2): FS 55, FS 56, FS 70, FS 80, FS 85, FS 89, FS 91, FS 94, FS 111, FS 120, FS 131, FS 240, among others.