heres my problem. I am not getting fuel from the gas tank to the carb. I broke down the carb and cleaned it out since it was sitting for 4 years It has a mechinacal fuel pump between the tank and carb. when i take the fuel pump off the motor and pump the fuel pump by hand it works but when it is bolted up to the motor it doesn;t get fuel to teh carb. This machine has been sitting for 4 years. What do you gusy think? Let me know.