TROUBLESHOOTING
PROBLEM
String trimmer
fails to start.
String trimmer
stops while
cutting.
30
56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1620/ST1620-FC
CAUSE
◾
The battery pack is not attached
to the trimmer.
◾
No electrical contact between the
trimmer and battery.
◾
The battery pack is depleted.
◾
The lock off switch is not being
moved forward before depressing
the variable speed trigger.
◾
The motor shaft or trimmer head
is bound with grass.
◾
The guard is not mounted on the
trimmer, resulting in an overly
long cutting line and motor
overload.
◾
Heavy cutting line is used.
◾
The battery pack or string
trimmer is too hot.
◾
The battery pack is disconnected
from the tool.
◾
The battery pack is depleted.
SOLUTION
◾
Attach the battery pack to the
trimmer.
◾
Remove battery, check contacts
and reinstall the battery pack.
◾
Charge the battery pack.
◾
Move the lock-off switch forward
and then press the variable speed
trigger.
◾
Remove the grass from the motor
shaft and trimmer head.
◾
Remove the battery pack and
mount the guard on the trimmer.
◾
Use recommended nylon cutting
line with diameter 0.095 in. (2.4
mm).
◾
Cool the battery or string trimmer.
◾
Re-install the battery pack.
◾
Charge the battery pack.