Komatsu GD555-5 Operation & Maintenance Manual page 140

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. If fuel is spilled
on earth and sand, be sure to remove them together.
Never bring flames near fuel because it is highly flammable and dangerous.
Stop the engine before adding fuel. Do not enter the operator's cab when filling the tank with fuel.
Do not leave your workplace when adding fuel.
NOTICE
If breather hole (1) in the cap is clogged, the pressure in the tank will drop
and fuel will not flow. Clean the hole from time to time.
1. Turn the engine starting switch to the ON position and check
the fuel level with fuel level gauge (G).
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: 416 liters (109.91 US gal)
WARNING
OPERATION
3 - 87