Main Motorcycle: 2005 Bonneville Blue 790
Join Date: Sep 2006
Location: Central Maryland, USA
Other Motorcycle: 1973 CB450, long gone
You answered your own question.
My method is bike on the center stand, pre-fill the filter, add oil until there's 0.4 quart or 0.5 liter left (of four quarts or liters), button it up and walk away. At that point, pay no attention to the level in the sight glass, it means nothing. Check the level next day, should be no higher than middle of the sight glass.
If you want to ride it in the meantime, no problem, but check the level after it sits all day or overnight. It doesn't have to be any more complicated than this, the bike doesn't care exactly how much oil is in there, but too much is not good.
As mentioned, if you don't have a center stand, it's trickier.
2005 Bonneville Blue 790cc, AI removed, Staintunes RC, no snorkel, inlet enlarged, 118/40/NBZT needles/1 shim/3 turns, Ikon 7610s, Ricor Intiminators, Barnett green clutch springs, Michelin Pilot Activs, D9 gauge panel, tachometer.
Last edited by Baltobonneville; 08-21-2019 at 09:41 AM.