Honda 2004 XR400R Owner's Manual page 81

Engine Oil
Add Engine Oil:
If the oil filter was replaced:
1.9 US qt (1.8 )
If the oil filter was not replaced, use
approximately:
1.8 US qt (1.7 )
72
Servicing Your Honda
To fill the oil tank to the upper level, oil should
be added in two steps.
15. Pour the recommended oil into the oil tank,
up to the upper level mark.
16. Install the oil filler cap/dipstick securely.
17. Start the engine. Let it idle 5 minutes. During
idling, support your motorcycle in an upright
position on a firm, level surface to assure an
accurate oil level reading.
18. Stop the engine. Remove the oil filler cap/
dipstick.
19. Add the recommended oil up to the upper
level mark. (Do not overfill.)
20. Reinstall the oil filler cap/dipstick.
21. Check for oil leaks.