Click here (1000 X 853 px/ 70K .jpg) for larger more detailed diagram Contact us for availability of items that are not highlighted. Item # Part # Description 1 53350 Sq. Hd. Set Screw 1A 38770 Hex Nut 2 03025 Base Adapter 3 51835 Cap Screw 4 51595 Screen 5 03485   Bottom Pump Cover (Not illus. ...Models 377, 320B)   03115 Bottom Pump Cover (All models except 377, 320B) 5A 26861 Gasket (Not illus. ...all models except 377, 320B) 6 67195 Washer 7 57400 Valve Spring 8 47035 Valve Plate only 9 26860 Gasket 10 24165 Anti-curl Washer 11 24325   Valve Disc 12 68590 Valve Washer 13 42295 Cotter Pin 14 62515 Valve Stem 15 68725 Piston Separator 16 38860 Hex Nut 17 38860 Rear Pump Case 18 39235 Piston Nut 19 68740 Piston Reinforcer 20 46885 Piston Plate 21 49270 Piston Ring 22 27295 Pump Case Gasket 23 56875 Piston Spacer 24 23335 Cylinder 25 03420 Front Pump Case Assembly 26 42175  Saddle Lever Pin 27 42310 Cotter Pin 28 46945 Retaining Plate 29 52810 Screw 30 50365 Piston Rod 31 54160   Shaft Seal 32 49195   "0" Ring 33 34675   Bearing Liner 34 43090  Saddle Lever Pin 35 34915  Arm Linkage 36 43015 Piston Rod Pin 37 10765  Lock Arm 38 33790  Lever Assembly 39 29380 Ball Handle 40 66570   Vacuum Breaker Assembly 41 30460  Hose Assembly 42 03880 Hose Drain Valve Body 43 38035 1" Close Nipple (Not illus. ...used on hose-equipped models)   44590 1" x 6" Nipple (used on Models 325, 345, 355) 44 03485 Top Pump Cover 45 66985  Valve Assembly 46 64856 Telescoping Suction (Not illus.) 47 38440      Nozzle & Strainer Assembly (used on all hose-equipped models)... 48 63310 Strainer only