3.1 Check Before Using CT420SC
Warning
Stop operation when the following issues occur and contact
manufacturer or local dealer for CT420SC repair.
（
1
）
The battery has been fully charged, but the hand-held
controller still shows low power.
（
2
）
After the power is turned on, press the hand-held controller
switch and there is no response.
（
3
）
Press the hand-held controller button, and find the function is
inconsistent with the manual function, or the function is missing.
（
4
）
The rotating positioning body at the handle cannot be
adjusted or cracks and damages are identified.
（
5
）
The height of handle cannot be adjusted or locked.
（
6
）
Cracks and crevasses are identified on the crawler track, or
the track deviates the gear during functioning.
（
7
）
CT420SC makes abnormal sound during functioning.
（
8
）
Switch on the battery and the universal wheel touches the
ground, press the "M " for the first time to make CT420SC in the
automatic adjustment mode of the loading board, however the
loading board cannot be adjusted to 9 ~ 11° from the horizontal
level.
Please stop the CT420SC if there is any damage to the remaining
parts or abnormal vibration of the machine which difficult to
determine whether the machine can be used safely during
functioning.
