Hitachi ZW 180-6 Operator's Manual page 306

9. Remove oil filler cap (2). Supply the specified amount of
engine oil.
Refer to "Engine Oil" on page 7-17.
Engine Oil amount : 25 liters (6.6 gallons)
10. Securely tighten oil filler cap (2).
11. Check for looseness of other oil filler caps (4).
12. Check that the oil level is between the maximum and
minimum level scales on oil level gauge (1). Then, start
the engine.
13. After starting the engine, check the sealing surfaces for
any oil leakage.
14. Keep the engine running at low idle speed for 5 minutes
and stop the engine. About 15 minutes later, recheck the
oil level. If necessary, add oil.
MAINTENANCE
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