the needle base setting are 3+1/2 turns out from stop, prime the mtr and it sould pop,and if you took the carb off and the base plate it may be rotated 180 out of position , the crank pressure will not work the carb pump if its reversed,the base spacer plate that is, and check the space between the mag and the flywheel,not sure of the space but 10,000ths seems close, hope this helps some , craig