Honda EX800 Owner's Manual page 19

Changing oil
Drain the oil while the engine is still warm to assure rapid and complete
draining.
1. Remove the oil filler cap, and drain the oil.
2. Refill with the recommended oil (see page 6) and check the level.
OIL CAPACITY: 0.45 Q (0.48 US qt)
OIL DRAIN BOLT
.LER
17