Komatsu PC138US-11 Operation & Maintenance Manual page 175

OPERATION EXPLANATION OF COMPONENTS
Insert the key as far as it will go to the shoulder (A) and turn it.
If the key is turned when it is not inserted all the way to the
end, it may break.
MAGAZINE BOX
A pocket is provided the rear inside the cab for keeping Opera-
tion and Maintenance Manual and oil chart.
Keep Operation and Maintenance Manual in this pocket so that
it can be read whenever necessary.
CUP HOLDER
The cup holder is located on the left side of the operator's seat.
ASHTRAY
Ashtray is on the left side of the operator's cab.
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