Doosan DX700LC Operation And Maintenance Manual page 191

Component Serial Numbers
There are many serial numbers on each traceable components
of the machine. For example, the engine serial number is
stamped on the left side of the engine block, below the rocker
cover. Additional engine information is described on a label
(Figure 5) on the rocker cover.
Please make note of these numbers and their locations. These
will be required whenever warranty service work is requested.
Safety Precautions
1. Make sure to lock out the hydraulic controls and post a
notice (Warning Tag) that the machine is being serviced to
prevent any unauthorized operation.
2. Make sure to clean up any fluid spills, especially around
the engine.
3. Inspect all fuel lines to make sure that fittings, lines, filters
and O-rings, etc., are tight and are not showing signs of
wear or damage.
4. If the inspection or test procedure requires that the engine
be running, make sure to keep all unauthorized personnel
away from the machine, and that all industry standard
safety precautions are followed.
Inspection, Maintenance and Adjustment
Figure 5
FG016100
OP001123
4-3