Komatsu D155A-6 Operation & Maintenance Manual page 150

OPERATION
CHECK FUEL LEVEL, ADD FUEL
When adding fuel, never let the fuel overflow. This may cause a fire. If any fuel is spilled, wipe it up completely. Never bring flames
near fuel because it is highly flammable and dangerous.
1. Turn the engine starting switch to the ON position and check
the fuel level gauge (G) on the monitor panel for fuel level.
After checking, turn the switch back to the OFF position.
2. After completing work, fill the fuel tank through fuel filler port
(F).
3. After adding fuel, tighten the cap securely.
Fuel tank capacity: 625 liters (165 US gal)
REMARK
When carrying out operations on slopes, to prevent the engine
from sucking in air, pay careful attention to the amount of fuel
remaining in the tank.
If breather (1) becomes clogged, the pressure inside the tank
will go down, and no fuel may be supplied, so clean the breather
from time to time.
WARNING
OPERATION
3 - 99