Anyone know where pdf files can be obtained for a 1959 Johnson QD-20 10hp?
Try here: http://forums.iboats.com/showthread.php?t=393281
LOGIN as directed then drill down to: Small Engines, Marine/Boat Motors, Evinrude/Johnson, Outboard 10HP (1955-1963) and Condensed Service Data.
Good luck with that great old motor!