Komatsu H75051 Operation & Maintenance Manual page 225

OPERATION
4.
Set the frame lock bar (2) to LOCK position (L).
5.
Open up cover (3) at the right side of the machine, clean
blue DEF tank filler cap (4) and surrounding area.
6.
Turn the cap (4) counterclockwise.
The caps of DEF tanks are blue, as required by emission
regulations.
7.
By sight gauge (5), add DEF through the filler port until
float (6) reaches line F (7).
Line (8) in the sight gauge indicates approximately 5 ℓ be-
low line F, and line (10) indicates approximately 10 ℓ.
Line (9) is the max adding line when DEF may freeze in
cold weather.
8.
After adding, align claw (11) of the cap with groove (12) of
the filler port and close the cap securely by turning it clock-
wise by 90 °.
MACHINE OPERATIONS AND CONTROLS
3-159