hi, have just rebuilt a dt50 mx . willnot start, ive had an onersizd rebore, checked timing, cleaned carb, 6 times. read somewhere crankcase could by now have fuel in it. on my old bsa bantam it had a drain plug fitted. has any one ever fitted one? thanks bill j.

is the plug getting wet bill?

these bikes dont have a crankcase drain, you have to leave the plug out and let it stand for quite a time until it evaporates off.

so you need fuel? spark? and compression?

but i expect you know that already.