Komatsu PC450-8 Operation & Maintenance Manual page 184

MACHINE OPERATIONS AND CONTROLS
2. If fuel is found to be low, unscrew fuel filler cap (F) on the
fuel tank and add fuel through the filler port until float
gauge (G) comes up to the highest point.
Fuel tank capacity: 650 liters
Position of tip (a) of float gauge (G) when fuel tank is full:
Approx 50 mm
3. After adding fuel, push float gauge (G) straight down with
fuel filler cap (F). Be careful not to get float gauge (G)
caught in the tab of fuel filler cap (F), and tighten fuel filler
cap (F) securely.
REMARK
If breather hole (3) on the cap is clogged, the pressure in the
tank will drop and fuel will not flow. Clean the hole from time to
time.
Check Working Lamp Switch
Check that the working lamps and lamps inside the instruments light up properly. Check also that there is no dirt
or damage.
If any lamp does not light up, the bulb is probably blown up or there is a disconnection, so ask your Komatsu dis-
tributor to carry out repairs.
1. Turn the starting switch to the ON position.
2. Turn the lamp switch ON (night mode (a), and day mode
(b)) and check that the working lamp lights up.
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OPERATION