Komatsu PC1250-11 Original Instructions Manual page 199

OPERATION
5.
Add oil through oil filler port (F) on the top face of the hydraulic tank when the oil level is below the correct
level.
NOTICE
Add oil so that it does not exceed the correct level. It
may damage the oil circuit and cause the oil to spurt
out.
If oil has been added until it exceeds the correct level,
remove the plug (1) on the bottom of the machine
body, and loosen the drain valve (P) to drain the ex-
cessive oil.
METHOD FOR INSTALLING HYDRAULIC TANK OIL FILLER CAP
If the oil filler cap is inserted in reverse, it only rotates by approximately 1/4 turns and cannot be locked.
Install the oil filler cap according to the following procedure.
1.
Match the ▲ marks on both of the oil filler cap and the
tank, and insert it.
2.
Rotate the oil filler cap clockwise, and lock it with the key.
The ▲ mark on the oil filler cap matches with the key mark
on the tank.
MACHINE OPERATIONS AND CONTROLS
k k
CAUTION
3-133