failure mode

FM-07: BLADE WOBBLES, RUBS, VIBRATES, OR GRINDS

FM-07 BLADE WOBBLES, RUBS, VIBRATES, OR GRINDS

Diagnostic overview

FM-07 BLADE WOBBLES, RUBS, VIBRATES, OR GRINDS

Likely Root Causes

  • Blade is bent, cracked, chipped, or wrong bore
  • Blade, washer, or bolt is dirty or misassembled
  • Blade bolt is loose
  • Shoe or guard is bent into the blade path
  • Spindle or bearing has side play or damage

Quick Checks

  1. A correct blade runs true, clears the guard and shoe, and produces no abnormal vibration or grinding.

Repair Preview

  1. Remove and reinstall the blade in the correct direction with clean mating surfaces, the correct outer washer, and the blade bolt securely tightened.
  2. Rotate the blade by hand with the battery out and check for side rub, guard contact, a bent shoe, or spindle side play through a full revolution.
  3. Perform a brief clear no-load test only if the hand check is normal; persistent wobble, grinding, or side play requires authorized spindle or bearing service.
  4. Remove the battery, place the saw on a stable surface, and inspect the blade for bending, cracks, missing tips, wrong bore, or other damage; replace any suspect blade.

This is a preview of the troubleshooting guidance included in the full repair manual.

Common Fixes

  • Wood-cutting circular-saw blade

Related symptoms

  • The blade runs off-center, touches the guard or shoe, produces unusual vibration, or makes a grinding sound.

    The blade runs off-center, touches the guard or shoe, produces 1. Remove the battery, place the saw on a stable surface, and inspect the blade for

  • Blade wobbles or grinds

    Blade wobbles or grinds Blade setup, damage, shoe or guard contact, spindle, or bearing fault; use FM-07.

Included in the full manual

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

Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.

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