Honda 2005 VTX1800C Owner's Manual page 119

Engine Oil & Filter
8. Install the new oil filter and tighten it by
hand.
9. Using an oil filter wrench attachment
and a torque wrench, tighten the new oil
filter to the specified torque:
20 lbf·ft (26 N·m , 2.7 kgf·m)
10. Check the condition of the sealing
washer on the drain bolts. Replace the
washers every other time the oil is
changed.
Install the drain bolts and tighten them
to the specified torque:
22 lbf·ft (30 N·m , 3.1 kgf·m)
Add Engine Oil:
11. Fill the crankcase with the
recommended oil (page
approximately:
3.9 US qt (3.7 )
110
Servicing Your Honda
103 ),
12. Install the oil filler cap/dipstick securely.
13. Start the engine and let it idle for a few
minutes.
14. Stop the engine. Wait several minutes.
15. Hold the motorcycle upright and check
that the oil level is at the upper level
mark on the oil filler cap/dipstick (page
106 ).
16. Check that there are no oil leaks.
If a torque wrench is not used for
installation, see your Honda dealer as soon
as possible to verify proper assembly.