Bright repeated arcing or sharp crackling is visible at the rear vents while the tool runs.

Bright repeated arcing or sharp crackling is visible at the 1. Release the trigger, remove the pack, and let the motor area cool.

• FM-28: Fm 4 1 3

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

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