Jeff the primer bulb is not a waste of space, try starting one without using it. I find that a gentle tap on the top of the carby usually will free a sticking needle, it is just that you can't tell a customer to start blowing on the hose when they don't have this sort of problem with the 4 strokes. And what do you think you have done by blowing on the hose Jeff, you have pressurized the float chamber and this has pushed a bit of fuel in through the main jet and towards the inlet manifold and that is all it takes to get it to start
Last edited by NormK; 30/11/18 12:35 PM.