Please note that the PICTURE UPLOAD function is not working. The iBoats Forum Moderators are working with the system administration folks at the parent company to get the issue resolved. This happened about a year ago and here we are again. In the meantime you can post photos as links to a picture hosting site of your choice. We are sorry about the inconvenience and will advise when the issue is resolved. Thank you for your patience.
If I am interpreting my manual correctly, your engine is a 50 hp manfactured in 1987. The numbers designate the horsepower and the last numbers signify the model year. The letters are disignators used for ordering proper parts for certain special models. Hope this helps out in the future.