Still having trouble getting a manual for my 1990 20 h.p. pull start outboard motor. Ken Cook has some at around 80.oo dollars that are not specific to my motor. Im wondering how much diff. there is between a 90 and a 89 model so I can buy a SOLEC manual at my local parts store. my motor is model E20CRESB, ser. R08584881 is this a 90 model motor? What is the corect plugs for this thing.The darn thing runs fine above a high idle but will die easing up to a dock. Are these 90 models worth keeping? Why no manuals. Am I the proud owner of a WHITEELEPHANT? Thanks for your time. And sorry about wearing out the search archives as I have spent about a mounth searching them learning mostly that I need a good manual.