I've got an older Mercury 6hp S/N 1737171 which I believe is a '63 or '64. The motor has been running pretty good for about a year and a half now but yesterday it stopped spraying water out of its "pee" hole. Yes, I know it now needs a new impeller. But should it have exhaust coming out of that hole too? Also, it seems this motor sure does leak a lot of gas and oil into the water when it isn't running (I mean it leaks right after it runs; it has never leaked in the garage). My question is how hard is it to replace the impeller? I'm not a mechanic but I've fixed all the minor problems with the motor so far. Where can I buy a service manual and what are all the parts, tools needed to replace the impeller. Does it matter what year? Is mine a 63 or 64? <br /><br />While I'm repairing it, I might as well rebuild the carburetor. Do you know where to get a kit to rebuild? Also, this is a 50:1 ratio motor right? It does smoke a lot.<br /><br />This has been a pretty good running motor so far and I really would like to keep this motor for many years. Its the perfect 4 wheel drive motor for shallow water (this explains why my impeller is shot).