I have a Johnson 20 h.p. outboard and am trying to get it running again..there is a pin hole in the diaphram and I want to rebuild the carburetor..however I dont know the serial number or model number to the outboard and cant find it anywhere..I have several numbers on the casting such as 308364...
Trying to find out serial number and model number for my motor that I inherited...previous info about numbers being on the transom mount didnt work out..nothing there..need more help! thanks