Hitachi ZW 120-6 Operator's Manual page 347

1. Remove the covers.
2. Remove grease from the cylinder rods if coated.
3. Fill the fuel tank. Bleed air from the fuel system. Check all
fluid levels.
4. Adjust the alternator and fan belt tension.
5. Check the oil level. Add oil as needed.
6. Install the battery.
Turn the battery disconnect switch to the ON position.
7. Start the engine. Run the engine at half speed for several
minutes before full load operation.
8. Repeat the process several times.
9. Stop the engine. Check each device for oil leaks.
10. Replace the fuel filter and engine oil filter with a new one
as needed. Change engine oil.
11. Check clamps of the suction hoses, air cleaner hoses and
radiator hoses. Retighten them as needed.
Before operating the machine, thoroughly perform "Daily
Check before Starting the Engine" on page 3-1. Sufficiently
perform the warm up operation.
STORAGE
10-3