sometimes gravity is enough to bleed these so you could try opening the bleed nipple and see if you get a constant flow from there,you never know,if not get someone to open nipple,press down clutch,close nipple,pedal up,and repeat that process again and again till you get a constant flow again from the nipple,you should see air coming out with the fluid also,if this doesn`t work then you may need a pressure bleeder to sort out your problem
cdc, March 2012