Komatsu PC138USLC Operation & Maintenance Manual page 116

OPERATION OPERATION
2. Select "Clock Adjustment" on the user menu, then press switch
F6. The screen switches to the time adjustment selection
menu screen.
The following three items can be changed.
(a) Clock setting
(b) 12/24 hour display mode
(c) Daylight saving time
DETAILED CONTROLS AND GAUGES DETAILED CONTROLS AND GAUGES
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