I have a 4 hp Clinton<br /> Mod K400 1106A<br /> Ser 429596<br /> Typ 60 27205 R<br /><br />I believe this is a 1972. I have been able to get all the info I need except for one. Lower unit oil change. I can not find the upper and lower vent screws like my Merc has. Do I have to take...
