Hi, I have just bought a used 4hp. Mariner outboard & am having trouble with what year model it is.I'll give the information that i have from 3 ID.plates on the motor...First plate reads...Mariner 4m 6eo s001394 Second plate reads...Made in Japan for international Co. fond Du Lac, Wis, USA. Third plate reads...Inspected by Japanese Government,then there is what i think is the serial # but the first # is unreadable so i'll put a ? in i'ts place.The # is ?9093. The # stamped on the welsh plug is 001394.I need to know the motors history so i can see if the part numbers are compatible with Mariner 4HP.Made in USA, Belgium or wherever. All help will be very much appreciated thanks.