I have a problem with my Tohatsu 90: After a while the priming bulb gets flat and the engine stops. After some work I got petrol in the bulb and then the same thing happens again.<br /><br />I have an external fuel-filter that I have changed and a stainless fuel tank.<br /><br />Any ideas of what can cause the problem?<br /><br />Regards<br />Rolf