I start quite a few of mine by hand.Like pat Roy said.most important part is to have the magnets and a prop blade both pointing at about 2 oclock position.then just lightly flip or slap the prop blade through the coil.like a follow through like any of the sports movments.All the speed you want,you want in the 4 inch arc between 2 oclock and 10 oclock position.Also prime the carb good by turning engine over with finger over carb at least 6 times.Combine all the info from all these posts and you should have it working for ya.