The ROP Shop Electric PTO Clutch for Warner 5218-36 Shaft Size 1 1/8 Belt Type A/B Pulley Diameter 6 inch Torque

What It Is

The ROP Shop Electric PTO Clutch engages and disengages the mower blades on lawn tractors and zero-turn mowers. It replaces Warner 5218-36 models and is designed for machines using a 1 1/8-inch shaft, a 6-inch pulley, and A/B belt types.

Fitment & Compatibility

Before buying, confirm three measurements: shaft diameter must be exactly 1 1/8 inches, pulley diameter must be 6 inches, and belt type must be A or B (cross-section width ~1/2 to 5/8 inch). This clutch is a direct replacement for Warner 5218-36 but is aftermarket—check that your OEM part number matches (e.g., John Deere, Husqvarna, or MTD models often use this spec). Verify deck size isn’t the only reference; measure your existing clutch’s bolt pattern and shaft length. Common fits include older John Deere LX, X300, and some Husqvarna GT series, but always cross-reference your machine’s model number with ROP’s compatibility list.

Key Things to Know

• Quality vs OEM: At $143.99, it’s cheaper than a Warner OEM (often $200+), but some users report slightly higher amp draw or shorter lifespan under heavy use. Fine for residential mowing, less ideal for commercial.
• Installation difficulty: Moderate. You’ll need a puller to remove the old clutch from the shaft, and a torque wrench to tighten the center bolt to spec (typically 30-50 ft-lbs). No special wiring skills required—harness plugs in directly.
• Common gotchas: The 6-inch pulley may be slightly thicker than OEM, requiring belt adjustment. Also, the clutch may need a break-in period (10-15 minutes of light use) to seat properly. If your old clutch had a different bolt pattern, this won’t fit.
• Belt type matters: A/B belts are not interchangeable with metric or K-section belts. Check your belt’s cross-section before ordering.

Should You Buy It

Buy this if you have a confirmed 1 1/8-inch shaft, 6-inch pulley, and A/B belt, and you want a budget-friendly replacement for a residential mower. Skip it if you need commercial-grade durability or if your machine uses a metric or non-standard shaft size—stick with OEM Warner for peace of mind.