Hi, my name is Steven and I am from South Africa. I am alsow the proud owner of a 1986 XT 550 and my mail adress is cebsys@ceb.co.za. Unfortionately I don`t have a solution to your problem but I would like to know if you came right with a manual as the one I have is very incomplete. Thanks and may you have an greate day. (What is your mail adress)