i have a century 30 35 and i have isolated the fuel pump as my problem. i am told that i can go to napa for a 12 volt replacement. napa has 1to 4 pound pressure inline pumps and 4 to 7 pound inline pumps. does anyone know the pressure for the kajuke diesel 35 horsepower? i opened the electronic module on the side of the existing pump to find a circuitboard encapsulated in an amber plastic. why the curcuit board? and will the napa brand " facet " have this ? what is it for? please enlighten me if you have this knowledge.