585521101 Lawn Mowers Electric PTO Clutch Fits for ZTR Z142 Z146 Z246 Z246i RZ46i Pulley Diameter 5.35" Counter Clockwise

What It Is

This is an electric PTO (power take-off) clutch that engages and disengages the mower blades on select zero-turn mowers. It’s designed for ZTR models like the Z142, Z146, Z246, Z246i, and RZ46i, converting electrical current into mechanical engagement for cutting.

Fitment & Compatibility

Before buying, verify these three things:

• Model match: This clutch fits Z142, Z146, Z246, Z246i, and RZ46i mowers. Cross-check your serial number against the OEM part list—some model years use different clutches.
• Pulley diameter: 5.35 inches. Measure your existing clutch pulley across the flat face (not the groove). If it’s not exactly 5.35", it won’t fit the belt path.
• Rotation direction: Counter-clockwise (CCW). Look at your old clutch from the pulley side—if the shaft turns CCW when engaged, this is correct. Clockwise clutches are physically different.
• OEM vs aftermarket: This is a non-OEM replacement. It should match OEM part numbers like 585521101 or similar. Confirm your mower’s OEM clutch number is listed in the product description. If your mower uses a two-wire vs three-wire connector, check wiring compatibility (most are two-wire, but verify).

Key Things to Know

• Installation difficulty: Moderate. You’ll need basic hand tools (wrenches, socket set) and a multimeter to test the coil resistance (typically 3-4 ohms). Expect 1-2 hours.
• Common gotcha: The air gap between the clutch armature and rotor must be set to 0.010–0.015 inches after installation. Too tight or too loose causes slipping or no engagement. Use a feeler gauge.
• Quality note: Aftermarket clutches can vary. With only 2 reviews, performance over time is unproven. Check warranty terms—some aftermarket clutches fail sooner than OEM.
• Belt check: A worn or stretched belt can damage the new clutch. Replace the belt at the same time if it’s over a year old or shows cracking.

Should You Buy It

Buy this if you need a budget-friendly replacement for a Z142, Z146, Z246, Z246i, or RZ46i and you’re comfortable measuring, wiring, and setting the air gap yourself. Skip it if you want a known OEM fit with a longer track record—stick with the factory part for less hassle.