N S S HUB 4 256 N S S BODY PART OF SCREW PART OF 4 256 GOVERNOR ASSY 4 256 GOVERNOR ASSY oN oo v 3 t r n i 4 169 Z RING 3 H r O Z 0 4 256 GASKET T w z m S O O O Q O 0 I O 77 1 v 4 259 4 256 4 259 4 256 RING VALVE SHAFT SPRING 0 0