Komatsu HB365LC-3 Operation & Maintenance Manual page 293

OPERATION
3.
Release lock (1).
4.
Hold rubber handle (2) and pull up to open.
5.
Set stay (3) securely in position (4) to lock it.
METHOD FOR LOCKING DEF TANK FILLER CAP COVER
1.
Pull stay (3) toward you and unlock the stay.
2.
Lower the cover.
3.
Turn the key clockwise to lock, and remove it.
Position (A): OPEN
Position (B): CLOSE (LOCK)
MACHINE OPERATIONS AND CONTROLS
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