Komatsu PW98MR-10 Operation & Maintenance Manual page 417

ATTACHMENTS AND OPTIONS
6.
Operate each control lever (work equipment, travel) and
attachment control switch fully in each direction within 15
seconds after the engine is stopped to release the internal
pressure in the hydraulic circuit.
7.
Set the lock lever to LOCK position (L).
8.
Turn the starting switch to OFF position (A).
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
WENAM00061
RKA52830
RKA48500
6-15