Komatsu PC450-8 Operation & Maintenance Manual page 233

OPERATION
1. Put left and right travel levers (1) in the neutral position.
The machine stops.
2. Turn fuel control dial (2) to low idling position (MIN) and
lower the engine speed.
3. Lower the bucket horizontally until the bottom touches the
ground.
4. Set lock lever (3) in the LOCK position (L).
MACHINE OPERATIONS AND CONTROLS
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