The primer on these works different to the primer on one with the carby over the fuel tank, it works on air pressure going into the float bowl and pushing fuel out of it into the carb throat.

If you push the primer can you see a small jet of fuel appear in the throat of the carb? if not I would suggest removing the bowl (1/2" bolt) and checking for dirt and debris, also to make sure fuel is in the bowl.

Last edited by Joe Carroll; 09/03/14 06:15 AM.