Komatsu GD555-5 Operation & Maintenance Manual page 74

OPERATION
EXPLANATION OF COMPONENTS
BLADE FLOAT PILOT LAMP
This monitor (6) lights up when the right and left blade lift cylinder
control levers are set to the FLOAT position.
When this monitor is lit, the engine does not start even if the
starting switch is turned to the START position.
BLADE ACCUMULATOR PILOT LAMP
(If equipped)
This monitor (7) lights up when the blade accumulator switch is
pressed to the accumulator side.
LIFT ARM LOCK PIN PILOT LAMP
This monitor (8) lights up when the lift arm lock switch is pressed
(pin removal).
RPM SET PILOT LAMP
This monitor (9) lights up when the RPM SET switch is pushed to
the front (SET/ACCEL) and the opening angle of the accelerator is
set.
The lamp also lights up if the brake pedal or accelerator pedal are
depressed and the setting is temporarily cancelled after the setting
has been made.
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