Part Number: 12C174-7 (Bearing) Part Number: 12C1747-7 (Seat helic) Part Number: 12C1755-9 (Support) Part Number: 12C175-9 (Support) Part Number: 12C1762-1 (Seat helical) Part Number: 12C176-3 (Valve) Part Number: 12C176-4 (Valve) Part Number: 12C177 (Valve check) Part Number: 12C177-1 (Valve chek) Part Number: 12C177-9 (Lever) Part Number: 12C178-9 (Paddle) Part Number: 12C180 (Ne) Part Number: 12C1800-1 (Frame assy) Part Number: 12C180-7 (Roller)