Cub Cadet Lawn Mower Tractor PTO Clutch Craftsman Troy-Bilt 917-04552 917-04552A 717-04552

One clutch serves machines sold under six brand names - Cub Cadet, Craftsman (Sears), Troy-Bilt, MTD, Bolens, and Huskee - all built on the shared MTD platform with the 917-04552 clutch path. For the repair shop that sees a Craftsman on Monday, a Cub Cadet on Tuesday, and a Troy-Bilt on Wednesday, one SKU covers all three machines - same chassis family, same clutch, different paint. For dealers, one part number replaces the cross-referencing of six brands at the counter.

The 6-inch pulley diameter is engineered for the wide fabricated decks of the High Output Series - providing the belt wrap and contact area to drive a wide triple-blade deck without slip under load. The larger diameter reduces belt slip and operating temperatures at the pulley interface, extending belt life on machines that mow larger properties. On a 46-inch or 50-inch deck, the 6-inch OD keeps the belt tracking straight and running cool through the entire mowing session.

Rated at 125 ft-lbs, this clutch delivers a torque-to-price advantage over the 80–105 ft-lb ratings on many comparably sized tractors. The higher rating provides crisp blade engagement through thick spring growth, wet grass, and heavy mulching conditions - the scenarios where under-spec clutches begin to slip and chatter. For owners who mulch leaves or cut dense turf, the 125 ft-lb rating translates directly into fewer mid-mow re-engagements and a longer-lived friction surface.

The 6-inch pulley is machined, not stamped - a construction upgrade over budget clutches that can deform and develop a wobble under sustained belt tension. The machined pulley maintains dimensional stability, keeping belt tracking straight and reducing the vibration that accelerates spindle bearing wear. For the High Output Series' larger decks and longer mowing sessions, the machined construction is the durability difference that keeps the deck cutting consistently season after season.