Deargooday Spindle Assembly with Pulley for Bush Hog Fitment — Black Steel Kit, Complete Hardware for FTH/ATH/RDTH/TD Models

This is a complete Deargooday spindle assembly with pulley and full mounting hardware designed to replace Bush Hog parts 50051388 and 50074053 for compatible finish mowers and rotary cutters.

When a mower spindle wears, bends, or begins to vibrate, it reduces cutting quality and adds stress to the deck and drive components. This Deargooday kit supplies a full spindle assembly plus the pulley and all necessary fasteners so you can restore proper blade alignment and quieter operation without hunting for separate parts. Built from heavy-duty steel and copper with a protective black coating, the unit is corrosion resistant and supplied with a 30-day return window and 12-month warranty for added confidence.

Which Bush Hog models will this spindle assembly fit?

The Deargooday spindle assembly fits many Bush Hog finish mower, rotary cutter, and tri-deck models in the FTH, ATH, RDTH, EFM and TD series. It covers common deck sizes and specific model numbers listed below, but it does not fit 84" decks—check your model before ordering.

• Compatible models: ATH600, ATH720, EFM480, EFM600, RDTH60, RDTH72.
• Also fits: FTH480, FTH600, FTH720, TD-1500, TD-1700 rotary cutters and tri-decks.
• HDE-series zero-turn decks with 49", 55", and 61" cutting decks (not 84" models).

How does replacing the spindle assembly improve mower performance?

A worn or bent spindle causes noise, blade misalignment, and vibration that reduce cut quality and can accelerate wear on belts and bearings. Installing this complete assembly restores proper blade rotation and balance, helping the deck cut more evenly and run with less strain on related parts.

• Eliminates wobble and vibration for a smoother cut.
• Restores correct blade height and alignment for cleaner results.
• Reduces stress on belts, pulleys, and gearbox components.

What comes in the Deargooday replacement kit and what are the materials?

The kit arrives with everything needed for a full spindle swap—spindle, pulley, hardware and washers—so you won’t need to source extra bolts or locknuts. Components are made from heavy-duty steel and copper with a black corrosion-resistant finish to withstand outdoor use and typical mower operating conditions.

• Included items: spindle assembly, pulley, key, blade washer, safety washer.
• Hardware: 5/8" locknut and flat washer, 1/2" capscrews, locknuts, and lockwashers as listed.
• Construction: heavy steel and copper components with black protective coating.

How easy is installation and what should I check before replacing the spindle?

Installation is straightforward for anyone comfortable removing mower blades and deck panels, but it does require proper safety steps and basic hand tools. Before replacing, inspect deck mounts, belts, and blade condition so you can replace any additional worn items while the deck is accessible.

• Disconnect spark plug and secure blades before starting work.
• Verify model fitment and compare old parts to the new spindle and pulley.
• Torque fasteners to manufacturer specs and check belt alignment after assembly.

Who is this for: This Deargooday spindle assembly is intended for owners and technicians of Bush Hog and compatible finish mowers or rotary cutters who need a complete spindle and pulley replacement. It suits farmers, landscapers, lawncare pros, and DIYers who prefer a single kit with all mounting hardware to restore deck performance and reduce vibration.