8TEN Electric PTO Clutch for Cub Cadet & MTD — Gen 3 (1.00in Bore, CCW, Thermal Cutoff)

8TEN Gen 3 Electric PTO Clutch is a drop-in replacement clutch designed to restore reliable deck engagement for Cub Cadet, MTD and many mower models that use part number 917-04174.

When your riding mower or garden tractor no longer engages the cutting deck reliably, this Gen 3 electric PTO clutch from 8TEN offers a high-performance replacement engineered to match OEM fit and function. It fits a broad list of original equipment part numbers across Cub Cadet, MTD, Troy-Bilt and other brands, and includes a thermal cutoff safety feature to protect the clutch from overheating during heavy-duty use.

Which machines will this clutch work with?

This 8TEN clutch is made to be compatible with many factory part numbers and models so you can replace the original without modifying the mower. It supports numerous Cub Cadet, MTD, Troy-Bilt, Huskee, Hustler, Exmark, Toro, Gravely and other mower series.

• Direct compatibility with Cub Cadet models such as SLT1550, LT1042, LTX1046, LGTX1050 and GT1554 ranges.
• Matches OEM numbers including 717-04174, 917-04174 and variants listed by MTD and Cub Cadet.
• Also cross-references to Toro, Exmark, Gravely, Hustler and Warner part lists for broad fleet compatibility.

How does the Gen 3 design protect the clutch and mower?

The Gen 3 version improves heat management and includes a built-in thermal cutoff to prevent damage from excessive temperature. That feature helps avoid premature failure during heavy loads or prolonged engagement.

• 370-degree automatic thermal cutoff shuts the coil down if temperatures exceed safe limits.
• Upgraded internal components for longer life under intermittent heavy-duty use.
• Balanced pulley and housing to reduce vibration and wear on mounting bearings.

What are the key mechanical specifications I should check before ordering?

Confirming a few dimensions and rotation direction ensures the replacement will fit and operate as expected. Measure the crankshaft and compare pulley diameter and rotation direction to your original clutch.

• Rotation direction: counter-clockwise (CCW) as viewed from the pulley face.
• Crankshaft bore: 1.00 inch — fits standard keyed shafts used on many tractors.
• Pulley outer diameter: 5.90 inches — compare to your existing unit for belt alignment.

How difficult is installation and what should I prepare?

Installation is straightforward for someone comfortable with basic mower maintenance; it typically requires common hand tools and attention to alignment and wiring. Follow safe procedures: disconnect the battery, remove the deck if needed, and confirm wiring polarity before testing.

• Disconnect battery and remove spark plug wires before starting work.
• Use a torque wrench and refer to mower service specs when re-tightening mounting bolts.
• Verify belt alignment and tension after installation to prevent slippage and wear.

This 8TEN Gen 3 Electric PTO Clutch is for owners, repair shops and fleet managers who need a reliable, OEM-compatible replacement that reduces downtime. If you maintain Cub Cadet, MTD, Troy-Bilt or similar zero-turn and lawn tractor models and require a durable clutch with thermal protection and correct mechanical fit (1" shaft, 5.90" pulley, CCW rotation), this product gives a direct-fit solution without extensive modifications.