Komatsu WA600-8 Operation & Maintenance Manual page 313

OPERATION
4.
Release R.H. brake pedal (2) gradually.
5.
Operate work equipment control levers (6) and (7), and
lower the bucket to the ground.
6.
Set bucket control lever (6) to "HOLD" position (c).
7.
Set boom control lever (7) to "HOLD" position (b).
8.
Press (a) of work equipment lock switch (8) and lock the
work equipment.
MACHINE OPERATIONS AND CONTROLS
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