Description
4009 710 2106 STIHL AutoCut C 3-2 Mowing Head for FSA 57 OEM Part
The STIHL AutoCut C 3-2 Mowing Head (4009 710 2106) is a genuine OEM cutting head designed for STIHL FSA 57 electric trimmers. This AutoCut mowing head uses nylon cutting line and features STIHLs tap-to-advance system, allowing the line to be extended automatically during operation for consistent cutting performance.
Manufactured to STIHLs exact specifications, this OEM mowing head ensures proper fitment, safe operation, and reliable trimming performance when replacing a worn or damaged cutting head.
Product Details
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OEM Part Number: 4009 710 2106
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Brand: STIHL (OEM)
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Part Type: Mowing Head (AutoCut)
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Model: AutoCut C 3-2
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Cutting System: Nylon Line, Tap-to-Advance
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Application: Electric Motor / Cutting Head
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Condition: New Genuine OEM Part
Function
This mowing head is designed to:
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Automatically advance cutting line by tapping on the ground
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Deliver consistent trimming performance
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Reduce downtime compared to manual line adjustment
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Provide smooth, low-vibration operation
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Replace worn or damaged OEM AutoCut mowing heads
Designed for grass and light weed trimming only.
Verify Fitment in 30 Seconds
Before ordering, confirm the following:
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OEM part number 4009 710 2106
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Tool model STIHL FSA 57
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Serial number range from 5xxxxxxxx
Always verify fitment by OEM part number and serial number.
Compatibility
Fits STIHL electric trimmers including:
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STIHL FSA 57
(Electric motor, cutting head from serial number 5xxxxxxxx)
Serial number requirement must be met for proper fitment.
Installation / Usage
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Disconnect power and remove battery
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Remove the existing mowing head
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Install the AutoCut C 3-2 mowing head per STIHL instructions
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Load cutting line as specified
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Test operation before trimming
Maintenance Tips
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Use only STIHL-recommended nylon line size
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Keep cutting head clean of debris
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Replace line before it wears too short
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Inspect head regularly for cracks or damage
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Store in a clean, dry location
