Komatsu PC45MR-30403, Operation And Maintenance Manual, Page: 208 / 475

NOTICE
If breather hole (5) in the cap is clogged, the pres-
sure inside the tank drops and this may cause the
fuel to stop flowing. To prevent this, clean breath-
er hole (5) from time to time and check there is no
clogging.
4) Close dirt cover (3).
METHOD FOR CHECKING HORN
1.
Turn the starting switch to ON position.
2.
Check that the horn sounds immediately when the horn
switch is pressed.
If the horn does not sound, ask your Komatsu distributor
for repair.
3.
After checking, turn the starting switch back to OFF posi-
tion.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-147