i just bought a clymer 1964 thru 1987 sterndrive manual. i cant figure out wich sterndrive i have. just bought the boat and trying to figure out exactly what i got. someone please help? its a mercruiser ser# a354426 there are also numbers on the side they are 1.98r a336383. the motor is a gm 140 181cid 4 cyl. anyone know what stern drive i have? in the manual it says i have a mr, but when i go to service chapter i dont see a reference to mr. am i stupid?<br /><br />jjohnson
