Komatsu D31EX-21, Operation & Maintenance Manual, Page: 242 / 256

GENERAL PRECAUTIONS
ATTACHMENTS, OPTIONS
6-2
GENERAL PRECAUTIONS 6
PRECAUTIONS RELATED TO SAFETY 6
If attachments or options other than those authorized by Komatsu are installed, this will not only affect the life of
the machine, but will also cause problems with safety.
When installing attachments not listed in this Operation and Maintenance Manual, contact your Komatsu distribu-
tor first.
If you do not contact Komatsu, we cannot accept any responsibility for any accidents or failures.
WARNING
General precautions
Read the instruction manual for the attachment carefully, and do not use the machine before you under-
stand the operation method completely.
If you lose the instruction manual, be sure to order another copy from your Komatsu distributor.
To prevent serious personal injury caused by misoperation, place your foot on the pedal only when oper-
ating the pedal.
Precautions for removal and installation
When removing or installing an attachment, observe the following items and work safely.
Select a firm, level surface when installing or removing an attachment.
When working in cooperation with one or more other workers, decide signs and observe them when carry-
ing out the operation.
When carrying a heavy part (25 kg or more), use a crane.
When removing a heavy part, always place a support in position before removing it.
When lifting a load with a crane, be particularly careful of the center of gravity.
It is dangerous to carry out operations when the load has been raised by a crane. Always lower the load
onto a stand and check that it is safe.
When leaving an attachment removed or installing it, place it in a stable position to prevent it from falling
over.
Never go under a load raised by a crane.
Always stand in a place which is safe even if the load should fall.
NOTICE
Qualifications are required to operate a crane. Never allow the crane to be operated by an unqualified per-
son.
For details of removal and installation operations, contact your Komatsu distributor.