failure mode

FM-13: The shaft lock is engaged, but the blade stud cannot be

Remove the battery, wait for a full stop, and use only the supplied

Diagnostic overview

Remove the battery, wait for a full stop, and use only the supplied

Included in the full manual

  • root cause analysis
  • tools needed
  • step-by-step repair procedure
  • diagrams
  • exploded views
  • post-repair checks

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