My tool sounds like it's running, but the chain is not moving
Ensure the chain is fully seated in the DRIVE SPROCKET grooves
1
WARNING: Remove the battery before attempting any fixes
2
Remove the CHAIN COVER (9) by turning the CHAIN TENSIONING KNOB (8) counterclockwise
3
Make sure that the chain is fully seated in the DRIVE SPROCKET grooves (16)
4
Cover the bar and chain and tighten down the CHAIN COVER
5
Press the LOCK-OUT BUTTON (1) while squeezing on the ON/OFF SWITCH (2)