Use and Care Guide

56-VOLT LITHIUM-ION CORDLESS 15" STRING TRIMMER—ST1520 & ST1520S 29
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
String trimmer fails
to start.
◾
The battery pack is not
attached to the trimmer.
◾
Attach the battery pack to the
trimmer.
◾
No electrical contact
between the trimmer and
battery.
◾
Remove battery, check contacts and
reinstall the battery pack.
◾
The battery pack is
depleted.
◾
Charge the battery pack.
◾
The lock-off button and
switch trigger are not
depressed simultaneously.
◾
Press down on the lock-off button
and hold it, then depress the switch
trigger to turn on the string trimmer.
String trimmer
stops while cutting.
◾
The guard is not mounted
on the trimmer, resulting in
an overly long cutting line
and motor overload.
◾
Remove the battery pack and mount
the guard on the trimmer.
◾
Heavy cutting line is used.
◾
Use recommended nylon cutting line
with diameter no greater than 0.095
in. (2.4 mm).
◾
The motor shaft or trimmer
head is bound with grass.
◾
Stop the trimmer, remove the
battery, and remove the grass from
the motor shaft and trimmer head.
◾
The motor is overloaded.
◾
Remove the trimmer head from the
grass. The motor will recover to work
as soon as the load is removed.
When cutting, move the trimmer
head in and out of the grass to be
cut and remove no more than 8
inches of length in a single cut.
◾
The battery pack or string
trimmer is too hot.
◾
Allow the battery pack or trimmer
to cool until the temperature drops
below 152°F (67°C).
◾
The battery pack is
disconnected from the tool.
◾
Re-install the battery pack.
◾
The battery pack is
depleted.
◾
Charge the battery pack.