8TEN Gen 3 Electric PTO Clutch for Toro Exmark Warner MTD Cub Cadet Ariens 110-6766 5219-81 5219-4 917-04214 00191700

What It Is

The 8TEN Gen 3 Electric PTO Clutch is an aftermarket replacement part that engages and disengages the mower blades on lawn tractors and zero-turn mowers. Designed for Toro, Exmark, Warner, MTD, Cub Cadet, and Ariens machines, it directly replaces OEM part numbers 110-6766, 5219-81, 5219-4, 917-04214, and 00191700.

Fitment & Compatibility

Before buying, verify these three things:

• OEM cross-check: Confirm your current clutch’s stamped part number matches one of the listed OEM numbers (110-6766, 5219-81, 5219-4, 917-04214, 00191700). This clutch is not universal—it fits specific Warner-style PTO assemblies.
• Physical dimensions: Measure your existing clutch’s mounting hole pattern (typically 3.15″ center-to-center), shaft diameter (commonly 1″ or 5/8″), and overall thickness. The 8TEN Gen 3 should match these, but always compare against your old unit.
• Deck size and model: This clutch fits most 42″–60″ decks on Cub Cadet LT/LTX/GT series, Toro TimeCutter/Z-Master, Exmark Lazer Z/Quest, and Ariens Ikon/Zoom. Check your mower’s model number (e.g., 13AJ609G) for specific fitment—some 2015+ models use a different bolt pattern.

Key Things to Know

• Quality vs OEM: This is a solid aftermarket option, but some users report slightly higher engagement noise than OEM Warner clutches. It’s built with sealed bearings and a reinforced pulley, which improves durability over budget clones.
• Installation difficulty: Moderate. You’ll need basic tools (socket set, torque wrench, multimeter). Expect 1–2 hours. The hardest part is often aligning the clutch to the crankshaft and torquing the center bolt to spec (typically 40–50 ft-lbs).
• Common gotchas:
  • The air gap between the clutch rotor and armature must be set to 0.010″–0.020″ (use a feeler gauge). Too tight or too loose will cause slipping or failure.
  • Wiring: Match the connector style—some models use a flat 2-pin, others a round Weatherpak. You may need to splice or adapt.
  • Shimming: If your old clutch used spacers, reuse them. This clutch may require minor shimming to achieve proper belt alignment.

Should You Buy It

If your current PTO clutch is dead (won’t engage, squeals, or slips) and you want a reliable replacement without paying $200+ for OEM, this 8TEN Gen 3 is a strong value. It’s best for DIYers comfortable with basic electrical and mechanical work. Avoid it if your mower uses an uncommon bolt pattern or you need exact OEM noise levels.