Anything that will cover the hole and keep water, mud, and dirt out will work.It blows air out. Wine cork should do the trick?
If you are not planning on putting an electric starter back on the bike (wish you luck in even finding one) drill a hole in the center of the housing where the cork fits and run a screw through it and into the cork. Or if you want to spend some money.... Find expansion plug (like for a little boat) and stick it in, tighten in up, and rip that Chinese bike around like you stole it!It blows air out. Wine cork should do the trick?
I easily found a starter for a chinese quad I acquired. In my case it was necessary because it doesn't have a kick start. But if you'd like help trying to find one you could provide the make and model.
You are my hero!
Did I blow you away babe?
Sometimes I forget that as a female it may not be appropriate to make jokes like this oh well.
Saw the title, and figured there would have been a lot better answers then I've read so far.