Engine Oil Replacement

Warm up the engine.
Remove the drain (A), and drain the engine oil.

Fig 1: Removing Drain
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reinstall the drain bolt with a new washer (B).
Refill with the recommended oil (Use Honda Motor Oil (P/N 08798-9023)).
Capacity

4.0 l (4.2 US qt) at oil change.

4.2 l (4.4 US qt) at oil change including filter.

5.3 l (5.6 US qt) after engine overhaul
Run the engine for more than 3 minutes, then check for oil leakage.