i believe it would have to be level, just getWhen you use rear stand for service like changing oil. When you filling in the new oil and the bike is on the rear stand . Will the level of the oil give correct reading as the rear wheel is off the ground or both the rear wheel have to be touching the ground like the front wheel to give the correct level of oil when you are replacing the new oil ???
The reason i am asking this i wanted to change the oil and i don't have such a tool like the workshop have..
someone to sit on it to steady it.
it's so light i just grab the bars and balance while
looking at the window.