Please verify model/part numbers before purchasing. Spindle top nuts must be torqued to 70 ft lbs. DO NOT torque by holding the pulley, this will damage the pulley. Instead, use a piece of wood to block the blade. Sears Craftsman Z6200, Z 6200 46 Zero-Turn Lawn Mower Deck Parts Rebuild Kit Fits Model. Z6200 – 917.204130. Includes the Following Parts. (1) 123″ x 5/8″ Deck Belt – Replaces Sears 539117245. (1) Idler Pulley – Replaces Sears 532196104. (1) Idler Pulley – Replaces Sears 539132728. (2) Spindle Pulley – Replaces Sears 539113962. (2) 23 Standard Lift Blades – Replaces Sears 532405380. (2) Spindle Assemblies with Hardware & Grease Fittings – Replaces Sears 532174356, 53910751.