i put a rebuild kit in my girlfriend's dad's 2002 9.9 yammi 4stroke. it would idle fine for a little bit then just die, then a very hard start. when it was in the water, it would start right up, idle, but then when you'd put it in gear and put a load on it it would die. so anywho, i put the kit in it, cleaned everything, and it still did it. well what as hiding under a plug was the pilot jet (#5 in this pic). i took it out, soaked it in carb cleaner, put it back in to the factory settings and that did it. thats all it needed the whole time. i've talked t a couple other people after the fact and they said thats usually where your problem lies. wish i woulda known. hopefully this helps someone.