Ian wrote on 07/05/08 at 06:33:16:I changed the oil and filter in my daughter's 1995 LS650 and added exactly 2 quarts. The sight glass is completely full. How full is too full?
Tip the bike slightly off level and see if the level comes into view.
I have had my engine apart, that's how I bought the bike (cheap). You should be able to get away with oil to the top of the window. The issue that arises is too much oil splash. Which turns into oil vapor and goes out the vent, which gets messy.
To check the oil level I use a piece of wood that makes the bike "almost" level and fill to the line. "Almost level" as in if you bump the bike it might tip over, but the wind won't blow it over... I have since (with the help of my 13 YO son) checked the bike at level. The oil comes to just the top of the window.