failure mode

FM-21: FM-21 GUIDE BAR, SAW CHAIN, SCABBARD, OR CUTTING ATTACHMENT IS DAMAGED

FM-21 GUIDE BAR, SAW CHAIN, SCABBARD, OR CUTTING ATTACHMENT IS DAMAGED

Diagnostic overview

FM-21 GUIDE BAR, SAW CHAIN, SCABBARD, OR CUTTING ATTACHMENT IS DAMAGED

Common Fixes

  • Low-kickback saw chain
  • Reduced-kickback guide bar
  • Guide-bar scabbard

Related symptoms

  • The bar is bent or cracked, chain links or cutters are broken, or the guide-bar scabbard is split, missing, or will not stay on.

    The bar is bent or cracked, chain links or cutters are 1. Remove the battery and do not run the saw with a bent bar, cracked rail, broken link,

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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