Doosan DX60R Shop Manual page 32

Engine Starting
Walk around your machine before getting in the operator's
cabin. Look for evidence of leaking fluid, loose fasteners,
misaligned assemblies or any other indications of possible
equipment hazard.
All equipment covers and machinery safety guards must be in
place, to protect against injury while the machine is being
operated.
Look around the work site area for potential hazards, people or
property that could be at risk while operation is in progress.
NEVER start the engine if there is any indication that
maintenance or service work is in progress, or if a warning tag
is attached to controls in the cabin.
A machine that has not been used recently, or is being
operated in extremely cold temperatures, could require a
warm-up or maintenance service before start-up.
Check gauges and monitor displays for normal operation
before starting the engine. Listen for unusual noises and remain
alert for other potentially hazardous conditions at the start of the
work cycle.
Do not short-circuit the starting motor to start the engine. This is
not only dangerous, but may also damage the machine.
When starting the engine, sound the horn as an alert.
Start and operate the machine only while seated.
Track Excavator Safety SP001614
Page 24