Komatsu PC400LC-5 Operation & Maintenance Manual page 95

Turn fuel control dial @ to the full speed (MAX) position and
carry out the operation is Step 6 for 3 - 5 minutes.
Repeat the following operation 3 - 5 times and operate slowly.
Boom operation RAISE ++ LOWER
Arm operation IN t) OUT
Bucket operation CURL H DUMP
Swing operation LEFT w RIGHT
Travel (Lo) operation FORWARD ts REVERSE
REMARK
In the above operation is not carried out, there may be a delay
in response when starting or stopping each actuator, so continue the
operation until it becomes normal.
9. Use working mode switch @ on the monitor panel to select the
working mode to be used.
ADO97010
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