It’s secured by a cotter pin and an attached extension screw.
The reel timing lever is the part responsible for slowly allowing each reel stop lever to come in contact with its related star wheel, stopping the reels in a 1-2-3 order as the clock unwinds. Next we’re going after the reel timing lever itself. The lever is held on with two cotter pins, so no big deal to get it off the mech. The next part we’re going to remove is a small linkage lever that runs between the clock and the reel stop timing lever.