25-2 AutoCut Trimmer Head - Fits Stihl FS55 FS56 FS70 FS80 - Replaces 4002-710-2191 - 2 Pack

25-2 AutoCut Trimmer Head - Fits Stihl FS55 FS56 FS70 FS80 - Replaces 4002-710-2191 - 2 Pack25 2 AutoCut Trimmer Head 4002 710 2191 Key Features Semi automatic, bump feed line advance system. Constructed from high impact plastic for durability. Designed for simplified line reloading without head disassembly. Arbor Size: 10mm x 1. 0 Left Hand Female (LHF). Replaces Cross Reference Part Numbers STIHL: 4002 710 2191, 4002 710 2108, 4002 710 2168, 4002 713 9608 Oregon Stens Rotary: 55 993, 385 861, 385 862, 25 2 Compatibility & Fitment Fits

25-2 AutoCut Trimmer Head 4002-710-2191

Key Features

• Semi-automatic, bump-feed line advance system.
• Constructed from high-impact plastic for durability.
• Designed for simplified line reloading without head disassembly.
• Arbor Size: 10mm x 1.0 Left Hand Female (LHF).

Replaces / Cross-Reference Part Numbers

• STIHL: 4002-710-2191, 4002-710-2108, 4002-710-2168, 4002-713-9608
• Oregon / Stens / Rotary: 55-993, 385-861, 385-862, 25-2

Compatibility & Fitment

Fits specific Stihl string trimmer models including:

• FS 44, FS 55, FS 55 R, FS 56, FS 56 R, FS 56 CE, FS 56 RC, FS 56 RCE
• FS 70, FS 70 R
• FS 80, FS 85
• FS 90, FS 90 R, FS 91 R, FS 94 R
• FS 100 RX, FS 110, FS 111 RX, FS 120, FS 130, FS 131
• FS 250
• FR 108

When to Replace

• Visible cracks, chips, or significant wear on the head housing.
• Failure of the bump-feed mechanism to advance line.
• Worn-out line eyelets causing premature line breakage.
• Excessive vibration during operation that is not related to the engine.

Installation Tips

• Disconnect the spark plug wire before performing any maintenance.
• Insert a locking pin or small screwdriver into the designated hole on the gear head to prevent the shaft from turning.
• Unscrew the old trimmer head by turning it clockwise.
• Screw the new trimmer head on counter-clockwise until it is hand-tight.