Komatsu WA380-8 Operation & Maintenance Manual page 232

MACHINE OPERATIONS AND CONTROLS
1.
Turn the starting switch to ON position (B).
2.
Check the DEF level gauge (1) on the machine monitor.
When adding DEF, perform actions written in "DEF LEVEL
CAUTION LAMP (3-22)".
3.
After checking, turn the starting switch back to OFF posi-
tion (A).
4.
Set the frame lock bar (2) to LOCK position (L).
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OPERATION