Komatsu PC290LC-11 Operation & Maintenance Manual page 449

ATTACHMENTS AND OPTIONS
8.
Pull out the mounting pins (2 places), remove the attach-
ment, then install the bucket.
For the installation procedure of the bucket, see "METHOD
FOR INVERTING BUCKET (3-203)".
9.
Check the oil level in the hydraulic tank.
For detail, see "METHOD FOR CHECKING OIL LEVEL IN
HYDRAULIC TANK, ADDING OIL (3-144)".
METHOD FOR INSTALLING ATTACHMENT
1.
Remove the bucket.
For the removal procedure of the bucket, see "METHOD FOR INVERTING BUCKET (3-203)".
2.
Place the attachment on a horizontal place, install pin (A)
and then pin (B) in this order to the arm.
3.
Lower the attachment to the ground and stop the engine.
4.
Turn the starting switch to ON (B) position.
5.
Set the lock lever to FREE position (F).
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
6-23