Hi i recently inherited a 5 hp sea king and would like to know where do i get a gas tank for it also what year and is it reliable? it looks to be a round similar to an air fitting looks to be 1/4 inch to 3/8 dia . model no.k5003106a type no6052205r serial no970551 spark plug (in It champion rj12yc) looks pretty clean but no fuel tank