Ok so I have an Evinrude 48 spl, I think it's a 1991. See picture of model#. First is this a 91? I've used the site to compare characters. Next can someone post a link for me to buy the service manual. I think I have some bad seals in the lower unit and I'd like to do it myself. I've got a thick grey discharge from the prop area and an oil or gas slick behind my boat. Might be running lean bit I'd like a manual so I can properly tune this thing. Any help would be greatly appreciated. Crap cant upload the photo