The Worklight Comes On But The Motor And Blade Do Not Start

Pulling the trigger activates the worklight, proving some control power is present, but the motor is silent and the blade does not rotate.

• Blade lock is stuck engaged or spindle is mechanically jammed
• Lower guard, blade, or clamp stack is contacting another part
• Trigger switch output, electronic module, motor, or internal wiring has failed
• Battery can power the light but cannot supply motor current

1. The worklight and motor respond together and the blade accelerates smoothly with the blade clear of material.

1. After seeing the light-only response, release the trigger, remove the battery, and wait until every moving part is fully still.
2. Check that the blade lock button returns, the blade is clamped correctly, the lower guard moves freely, and no debris or part is visibly jamming the blade
3. Install a known-good fully charged compatible pack and make one clear no-load start attempt without touching the blade lock.
4. If the light still responds but the motor remains silent, stop use and have the switch, module, motor, spindle, and internal wiring diagnosed by authorized

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

• FM-08: Fm Dcs578 08

• 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.