Beware there are two potential drain plugs - one does not drain all the oil and if you aren't watching the sight glass and just add 4 qts guess what - it will be overfilled and it will certainly be smoking and probably pumping out of the crankcase vent into the airbox, etc.
Read this:
http://www.webbikeworld.com/Motorcyc...soil.htm#drain
And let us know what you think.
Courtney in Seattle
