Komatsu PC290LC-11 Operation & Maintenance Manual page 171

OPERATION
It is possible to stow the front window (upper side) in the roof of the operator's compartment.
When opening
1.
Stop the machine on a level ground, lower the work equip-
ment to the ground, then stop the engine.
Set lock lever (1) securely to LOCK position (L).
2.
Check that the wiper blade is stowed in the right stay.
3.
Hold handles (A) (2 places) on the right and left top sides
of the front window, and pull levers (B) (2 places) to re-
lease the locks at the top of the front window. The top of
the front window will come out.
EXPLANATION OF COMPONENTS
3-99