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F01

F01 - Required force during operation too high

Stihl · Power Tools

What does F01 mean?

This error indicates that the tool is encountering too much resistance while in use. This could be due to the material being cut or the tool itself. The electronics are designed to stop the tool to prevent damage.

Common Causes

  • Cutting material that is too hard or dense
  • The cutting attachment is dull or damaged
  • Internal mechanical issue with the tool

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if the cutting attachment (chain, blade, etc.) is sharp and undamaged.

  2. 2

    Ensure you are not forcing the tool through the material; let the tool do the work.

  3. 3

    Clean any debris from around the motor and cutting attachment.

  4. 4

    Refer to the specific troubleshooting flow chart for F01 in the technical information section.

Browse all codes in this manual (35)
Verified technical data. Last updated: April 2026

Related Faults

1 glowing red LED1 glowing red LED - Battery too hot or too cold1 glowing red light1 glowing red light — Battery too hot or too cold3 flashing red LED (AK Series)3 flashing red LED - Internal electronic issue (AK Series)
Source: Stihl Power Tools
Open Manual (Page 149)Search more codes in this manual