I inherited a 15 hp japanese mariner s13228 which I believe is a 76 long-shaft model. It starts right up but kills after 15-20 seconds. I cleaned fuel tank and replaced fuel hose. Is there a simple test to check fuel pump? What other obvious things should I check? I have a clymer manual but its a bit generic. Is it worth servicing, or should I let my brother use it as an anchor for his floating swim platform. Any <br />thoughts would be appreciated.<br /> MNkid