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425, 475, 435, 485, 474, 476, 473 Illustrated Backpack Sprayer Parts List
Special Parts& Accessories
(Not shown in parts list)
Click on order number to order desired part.
| Order No. | Description |
|---|---|
| 4900310N | Conversion kit (from piston to diaphragm pump) |
| 0610406-K | Diaphragm, pump repair kit includes 8, 11-13, (2 ea.), 24, 25,66 |
| 0610407-K | Piston repair kit includes 8, 10-13, 20 (2 ea.), 24, 25, 44 |
| 0610411-K | Wand repair kit includes7-10, 22, 26, 34, 49, 103 (see 13) |
| 0610409-K | Piston, rod & collar kit includes 41-44, 54 |
| 4400203 | Pump Assembly (425,435) includes 1,8,11,12,13,20 (2 ea.),39,40,41,42,43,44,54 |
| 4400221 | Pump Assembly (475,485) 1,8,11,12,20 (2 ea.), 39,61,63,64,(13 ea.),65,66,67,68,69,70,72 (2 ea.), 106 |

Backpack Sprayer Parts List -Order
Part numbers correspond with image above.
Click on order number to order desired part.
| Pos No. | Order No. | For Model | Description |
|---|---|---|---|
| 1 | 4200215 | Plug (item8 incl.) | |
| 2 | 0010165 | Bolt | |
| 3 | 0012185 | Bolt | |
| 4 | 0030131 | Washer | |
| 6 | 0012185 | Bolt | |
| 7 | 0610402-K | Shut-off valve repair kit | |
| 8 | 0062258 | gasket | |
| 10 | 0062115 | O-ring | |
| 11 | 0062291 | O-ring | |
| 12 | 0062139 | O-ring | |
| 13 | 0062140 | O-ring | |
| 14 | 0064234 | Hose 48″ (item 34 incl.) | |
| 15 | 0066388 | Hose clamp | |
| 16 | 0066394 | Clamp | |
| 17 | 4043123 | Stop Plate | |
| 18 | 4035111 | Pump Shaft | |
| 20 | 4061257 | Valve Plate | |
| 21 | 4200242 | Red tank cap (item 48, 98 & 99incl.) | |
| — | 4200305 | Heavy Duty | Black tank cap (item 48, 98 &99 incl.) |
| 22 | 4074148 | Retaining Nut | |
| 23 | 4074323 | Valve body | |
| 24 | 4074350 | Sealing piece | |
| 25 | 0070260 | Compression spring | |
| 26 | 4074337 | Retaining Nut | |
| 27 | 4074344 | Control knob | |
| 28 | 4074410 | Bushing | |
| 29 | 4074263 | Flat spray jet | |
| 30 | 4074756 | Swirl plate | |
| 31 | 4074283 | Jet filter | |
| 32 | 4074755 | Jet cap | |
| 33 | 4900527 | Plastic adjustable nozzle (inc. a& b) | |
| 34 | 4074500 | Clamp | |
| 35 | 4074527 | Elbow | |
| 36 | 4200162 | 425,474, 475,476 | Tank& frame assy., 4 gal |
| call for pricing | 435,485 | Tank &frame assy., 5 gal | |
| 37 | 4200106 | Filter Basket | |
| 38 | 4300315 | Carryings trap (item 73 incl.) | |
| 39 | 4400240 | Pressure cylinder (item 10, 23-25, 27 incl.) | |
| 39 | 4400240N | Pressure cylinder (solid) | |
| 40 | 4073190 | Cylinder assy. (item 12,13,20 inc.) | |
| 41 | 4074409 | Connecting rod without stud | |
| 42 | 4074262 | Lever | |
| 43 | 4073558 | Piston | |
| 44 | 4400189 | Viston®collar | |
| 45 | 4800170 | Shut-off valve assy. | |
| 46 | 480017325 | Pump lever (item 75 incl.) | |
| 47 | 4900230 | Spray tube 20″ | |
| 48 | 4061345 | Gasket | |
| 49 | 0031356 | Washer | |
| 50 | 4900454 | Fold away handle (item 58 incl.) | |
| 51 | 4074680 | Protective cover | |
| 52 | 0010110 | Bolt | |
| 53 | 0020101 | Hex nut | |
| 54 | 4074408 | Connecting rod with stud | |
| 55 | 4074412 | Buckle | |
| 55-a | 4074425 | Pin, backpack straps | |
| 56 | 0020119 | Nut | |
| 57 | 0012192 | Bolt | |
| 58 | 4074996 | Clip, wand retaining | |
| 59 | 0065210 | Heavy Duty | Brass flay spray nozzle |
| 60 | 4073411 | Housing (diaphragm) | |
| 61 | 4073410 | Flange | |
| 63 | 4400222 | Valve assy. (item 12, 20 incl.) | |
| 64 | 0018275 | Screw | |
| 65 | 4074256 | Plunger | |
| 66 | 4074246 | Diaphragm | |
| 67 | 4074255 | Lever | |
| 68 | 4031130 | Wrist pin | |
| 69 | 4074234 | “R”connecting bracket | |
| 70 | 4074243 | “L”connecting bracket | |
| 72 | 0010141 | Bolt | |
| 73 | 4074837 | Hook | |
| 75 | 4074392 | Grip | |
| 76 | 4900430 | Driftguard | |
| 80 | 4900477 | Double spray nozzle | |
| 81 | 4900528 | Extension wand 60″ (1250 mm) | |
| 90 | 4900622 | Heavy duty | Pressure gauge w/connection parts |
| 92 | 4900513 | Extension tube 20″ (500 mm) | |
| 94 | 4074338 | Retaining nut | |
| 95 | 0062249 | O-ring | |
| 96 | 4900258N | Elbow nozzle assy. | |
| 97 | 4074295 | Pin | |
| 98 | 4061464 | Vent plate | |
| 99 | 4074123 | Vent cap | |
| 100 | 4074329 | Lock clip | |
| 101 | 4074336 | Retaining nut | |
| 102 | 4074335 | Lever | |
| 103 | 0062271 | O-ring | |
| 106 | 0062324 | O-ring | |
| 4073725 | Carry Handle | ||
| 0610410-P | Adj. spray nozzle assy. | ||
| 4900207 | Adj. spray nozzle | ||
| 4300343 | Shoulder saver harness |
