Re: 1965 33hp Evinrude - armature plate shaking
While remodelling my '62 28hp Johnson (rx-10) I ran into the same problem. I went to the local outboard boneyard and picked through a pile of armature plates with bearings until I found the best one (most were loose). Unfortunetly, once the old grease was cleaned off it turned out to be as loose as the original one. It seemed like most of the play was coming from the retainer bearing at the bottom of the armature plate. Having nothing to loose, I carefully filed the ridge on the bottom of one of the armature plates where the screws (phillips) that clamp the brass slider came through, reassembling and checking the action and clearance frequently. After about an hour fooling around I was able to get the plate turning nice and smooth with little play.<br /><br />I suspect this is a common problem, owing to the ignition system being grounded through this bearing (brass and aluminum) in preference to the inner bearing (brass, steel and aluminum) in a salt water environment. I ran a heavy ground wire between the coils and a point on the block hoping to send most of the current through it and minimize electrolytic action at the bearing. <br /><br />Hope this helps, and do everything alcan said first.
