$ 0 0 These are off of a 2150 that's currently not operating. Can someone please explain what these are, how they are used, and what is the lever on the bottom with the tortoise and hare?? What, exactly, moves quickly or slowly? Attached Images SCV bottom.jpg (172.4 KB) scv front.jpg (83.7 KB) scv rear.jpg (60.9 KB)