FM-10: FM-10 THE MOTOR RUNS BUT THE CHUCK DOES NOT ROTATE

The motor runs but the chuck does not rotate, indicating a mechanical disconnect between motor and chuck.

• Bit or chuck is mechanically jammed
• Clutch is between settings or internally failed
• Gear teeth, carrier, or motor pinion are stripped
• Spindle or chuck is seized
• Motor shaft coupling or internal fastener has failed

1. Soft dry brush; known-good compatible battery.

• The motor can be heard running, but the chuck is stationary or does not rotate normally.

  The motor can be heard running, but the chuck is 1. Release, center-lock, remove the pack, and remove the bit.

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

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