Komatsu GD555-5 Operation & Maintenance Manual page 115

OPERATION
EXPLANATION OF COMPONENTS
FRONT ATTACHMENT CONTROL LEVER
(If equipped)
This lever (15) is used to operate the front attachment.
When the machine is equipped with a front blade
(A) LOWER: The front blade is lowered.
(B) HOLD: The front blade is stopped and held in position.
(C) RAISE: The front blade is raised.
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