Komatsu GD555-5 Operation & Maintenance Manual page 106

OPERATION
EXPLANATION OF COMPONENTS
RIPPER/SCARIFIER CONTROL LEVER
(If equipped)
This lever (2) is used to operate the ripper or scarifier.
When the machine is equipped with a ripper
(A) LOWER: The ripper is lowered.
(B) HOLD: The ripper is stopped and held in position.
(C) RAISE: The ripper is raised.
When the machine is equipped with a scarifier
(A) LOWER: The scarifier is lowered.
(B) HOLD: The scarifier is stopped and held in position.
(C) RAISE: The scarifier is raised.
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