Mercury Impeller 3.5, 3.6, 4, 4.5, 7.5 & 9.8 Hp
3.5 Hp Serial No. 6202173 & Up
3.6 Hp Serial No. 5404651 & Up
4 Hp (2 Cyl.) Serial No. 5589202 & Up
4 Hp Made in U.S.A Serial No. 5595532-9075838
4.5 Hp Serial No. 5595532
7.5 (438 ID) & 9.8(.438 ID) Serial No. 5206650-Up
