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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-KDiaphragm, 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-KWand repair kit includes7-10, 22, 26, 34, 49, 103 (see 13)
0610409-KPiston, rod & collar kit includes 41-44, 54
4400203Pump Assembly (425,435) includes 1,8,11,12,13,20 (2 ea.),39,40,41,42,43,44,54
4400221Pump 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 ModelDescription
14200215Plug (item8 incl.)
20010165Bolt
30012185Bolt
40030131Washer
60012185Bolt
70610402-KShut-off valve repair kit
80062258gasket
100062115O-ring
110062291O-ring
120062139O-ring
130062140O-ring
140064234Hose 48″ 
(item 34 incl.)
150066388Hose clamp
160066394Clamp
174043123Stop Plate
184035111Pump Shaft
204061257Valve Plate
214200242Red tank cap 
(item 48, 98 & 99incl.)
4200305Heavy DutyBlack tank cap 
(item 48, 98 &99 incl.)
224074148Retaining Nut
234074323Valve body
244074350Sealing piece
250070260Compression spring
264074337Retaining Nut
274074344Control knob
284074410Bushing
294074263Flat spray jet
304074756Swirl plate
314074283Jet filter
324074755Jet cap
334900527Plastic adjustable nozzle 
(inc. a& b)
344074500Clamp
354074527Elbow
364200162425,474,
475,476
Tank& frame assy., 4 gal
call for pricing435,485Tank &frame assy., 5 gal
374200106Filter Basket
384300315Carryings trap 
(item 73 incl.)
394400240Pressure cylinder 
(item 10, 23-25, 27 incl.)
394400240NPressure cylinder (solid)
404073190Cylinder assy. (item 12,13,20 inc.)
414074409Connecting rod without stud
424074262Lever
434073558Piston
444400189Viston®collar
454800170Shut-off valve assy.
46480017325Pump lever (item 75 incl.)
474900230Spray tube 20″
484061345Gasket
490031356Washer
504900454Fold away handle 
(item 58 incl.)
514074680Protective cover
520010110Bolt
530020101Hex nut
544074408Connecting rod with stud
554074412Buckle
55-a4074425 Pin, backpack straps
560020119Nut
570012192Bolt
584074996Clip, wand retaining
590065210Heavy DutyBrass flay spray nozzle
604073411Housing (diaphragm)
614073410Flange
634400222Valve assy. (item 12, 20 incl.)
640018275Screw
654074256Plunger
664074246Diaphragm
674074255Lever
684031130Wrist pin
694074234“R”connecting bracket
704074243“L”connecting bracket
720010141Bolt
734074837Hook
754074392Grip
764900430Driftguard
804900477Double spray nozzle
814900528Extension wand 60″ (1250 mm)
904900622Heavy dutyPressure gauge w/connection parts
924900513Extension tube 20″ (500 mm)
944074338Retaining nut
950062249O-ring
964900258NElbow nozzle assy.
974074295Pin
984061464Vent plate
994074123Vent cap
1004074329Lock clip
1014074336Retaining nut
1024074335Lever
1030062271O-ring
1060062324O-ring
4073725Carry Handle
0610410-PAdj. spray nozzle assy.
4900207Adj. spray nozzle
4300343Shoulder saver harness
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