FM-26: THE MOTOR RUNS BUT THE CHUCK DOES NOT TURN OR LOSES DRIVE

The Motor Runs But The Chuck Does Not Turn Or Loses Release the trigger, remove the battery, and stop using the drive path until FM-26

• Speed selector or shift fork is between engagements
• Gear teeth, keys, shaft, or coupling are stripped or broken
• Clutch drive has failed internally
• Chuck is loose on the spindle or spindle connection has failed

1. Motor rotation produces stable chuck rotation in both selected ranges, or the internal drive loss is proven.

Release the trigger, remove the battery, and stop using the drive path until the selector and chuck are checked.

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

• The motor can be heard running, but the chuck remains still, pauses independently, or free-spins without transmitting normal drive in either fully selected speed range.

  The motor can be heard running, but the chuck remains still, 1. Release the trigger, remove the battery, and stop using the drive path until the

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

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