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Models

Symptoms

The saw chain leaves the guide-bar groove, hangs from the bar, or comes off the drive sprocket.
The bit passed initial insertion, but backs out, falls free, or loses drive while the chuck body stays secure.
The direction lever will not reach forward, reverse, or center lock, or the selected position does not hold.
The trigger returns normally and power drops, but the anvil repeatedly coasts instead of stopping promptly.
The motor can be heard, but the front output remains still in both directions with the bit removed.
The charger green LED does not flash, never becomes steady, or the battery remains discharged.
The drill or battery becomes rapidly or severely hot, or little cooling air can move through the tool vents.
The blade leaves the line, flexes excessively, bends, or breaks during an otherwise controlled cut.
The battery will not slide fully into the handle, lock in place, stay retained, or release normally.
The drill makes abnormal grinding or knocking, vibrates strongly, or the chuck and spindle have play.
The quick-release collar is stuck, has limited travel, or does not spring back after it is pulled.
THE BATTERY OR CHARGER WILL NOT BEGIN OR COMPLETE A CHARGE
THE BATTERY WILL NOT SEAT, LATCH, RELEASE, OR STAY SECURE
The battery will not slide in, click into place, release, or remain secure in the handle.
The drill stops early or gives far less runtime than expected without unusual heat.
A straight bit or socket visibly orbits, shakes, or runs off-center during a brief no-load test.
Clamp lever will not travel
With no fastener load, the bare or correctly fitted output sounds harsh, binds, knocks, or shakes abnormally.
WORKLIGHT COMES ON, BUT THE MOTOR WILL NOT START
With the clamp lever working, a correct blade will not enter fully or fails the hand tug-check.

Failure Modes

part