I have acquired a used Johnson 25 Seahorse. The serial number according to the disc on the engine block is B2869/J25BAC1M. I am a novice with this type of motor so need as much information as I can get.<br />Main questions are - <br />2 or 4 stroke?<br />What fuel/fuel mix does it require?<br />Date of manufacture.<br />Service information e.g. plug type and gap, tuning tips etc.<br />It was used on a rescue launch at the local (freshwater) sailing club. It was serviced two years ago and has hardly been used since as there were starting problems.<br />CAN ANYBODY OUT THERE HELP ME?<br />Many thanks - Paul