to be honest the M does not require a stand it sits high enough to slide a pan under it and the filter is in a sort of accessible area, do stand the bike up with one hand when the oil starts to drip when it is almost done and hold a cold one in the other, take care to watch the sight glass when filling, again the same one hand procedure and a buddy would help.
A couple of days ago there was a thread about stand. Type it in the SEARCH field in the thread there is a home made one in there under 20$ and
Oh and find Copro's sig he has the M50 Manual in it and download it!