Hydraulic Piston Back Up Washer 83904831 Models 1200, 1210, 1212, 1290, 1294, 1390, 1394, 1490, 1494, 238, 248, 258, 268, 2810, 288, 3210, 3220, 3230, 3430, 385, 3900, 3910, 3930, 395, 4100, 4110, 4130, 4210, 4220, 4230, 4240, 454, 4600, 4610, 4630, 474, 475, 4830, 484, 485, 485XL, 495, 495XL, 5030, 574, 584, 585, 585XL, 595, 595XL, 674, 684, 685, 685XL, 695, 695XL, 784, 785, 785XL, 795, 884, 885, 885XL, 895, 895XL, 990, 995, 995, 996, CX100, CX100, CX50, CX50, CX60, CX60, CX70, CX70, CX80, CX80, CX90, CX90, Hydro 84