Komatsu GD555-5 Operation & Maintenance Manual page 180

OPERATION
OPERATION
OPERATING RIPPER/SCARIFIER
When the machine is equipped with a ripper
When ripper/Scarifier control lever (7) is pushed forward (A), the
ripper goes down; when it is pulled back (C), the ripper goes up.
When the machine is equipped with a scarifier
When ripper/Scarifier control lever (7) is pushed forward (A), the
scarifier goes down; when it is pulled back (C), the scarifier goes
up.
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