After 30-40 minutes out on the water my Honda b100 cut out. I got it to start but it then proceeded to die again shortly after. I lifted the hood to find it was very hot despite the cooling water peeing out just fine. I got back, removed the adjustment screw on the carb and sprayed compressed air in there are it started and idled fine after that. also switched fuel line, bulb, tank and fuel. After 15 minutes out on the water however it cut out again. This time I cleaned the whole carburettor with alcohol and used a thin wire the clean the jets. I also did an oil change and non of these sorted it. I can get the motor started with choke and high revs, but doesn't idle whatsoever and has to continually be pumped on the throttle to keep it alive.

Any thought on how to solve my problem would be greatly apricated.