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F30 - F34

F30 - F34 - Chain brake defective

Stihl · Power Tools

What does F30 - F34 mean?

These damage codes specifically point to a defect within the chain brake system. This could involve the lever, band, spring, or associated mechanisms.

Common Causes

  • Damaged chain brake lever
  • Worn or damaged brake band or tension spring
  • Obstruction preventing the chain brake from functioning correctly

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the chain brake lever for any visible damage or deformation.

  2. 2

    Check the brake band and tension spring for signs of wear or breakage.

  3. 3

    Ensure the chain brake engages and disengages smoothly.

  4. 4

    Replace any damaged parts of the chain brake system.

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