14
（
3
）
The height of handrail cannot be adjusted or failure in
locking.
（
4
）
Cracks and crevasses are identified on the crawler track, or
the track deviates the gear during operation.
（
5
）
CT250/300/250A/300A makes abnormal sound during
functioning.
Please stop the CT250/300/250A/300A 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.
3.2 Usage of Control button
3.2.1 Usage of Control button for CT250/300
-
：
Loading board
control mode
O:Track mode
=
