There were at least two different mechanisms that S-C used to regulate the Power Space and I am unfamiliar with one of them. Start by taking off the bottom panel so you can see what's going on. Operate the power space while watching what is moving and then you should be able to understand what's involved. The system That i know switches out the regular escapement regulation (the dogs activated by key and spacebar linkages) for an independent one wherein the dogs are instead controlled by a fat rubber finger that gets diddled by a yoke that is powered by the otherwise free motion of the carriage. That's when it is working. Now, tho, it's not right. Most common fault is with the pivot for that linkage. See if that yoke feels sloppy. There is a white plastic screw with a divot in the inner end to hold and allow adjustment of the bearing of the yoke. That pivot screw is threaded through a hole in the frame and locked with a metal locknut and the thing loosens over the decades, allowing slop in controlling the dogs. If you're lucky the threads can be coaxed into holding a fresh adjustment. Do not force or overtighten it. Incidentally, the speed of the Power Space action can be adjusted by the position of that yoke hitting the rubber finger; that should not need adjustment, but keep it in mind. Your cause could be something else, but the normal operation of the escapement working with the keys and spacebar indicates that the escapement is basically OK. Cleaning never hurts, though.
https://www.reddit.com/r/typewriters/comments/1oi6808/space_runs_too_fast_with_loud_buzzing_sound_plz/ reply via u/ahelper
