The ROP Shop | Electric PTO Clutch for Exmark/Toro 104-3334 1043334 - Lawn Mower Engine Motor

What It Is

This is an electric PTO (power take-off) clutch that engages and disengages the mower blades on Exmark and Toro zero-turn mowers. It replaces OEM part 104-3334/1043334 and is designed for commercial-grade mowers with 48- to 60-inch decks.

Fitment & Compatibility

Before buying, confirm your mower’s model and deck size. This clutch fits Exmark Lazer Z, Lazer Z HP, and Turf Tracer models, plus Toro Z-Master 4000/5000 series (2000–2010). Check the OEM part number on your current clutch—it should match 104-3334. Measure the clutch diameter (4.5 inches) and shaft size (1 inch splined). Also verify the pulley groove width (0.5 inch) and the electrical connector type (two-pin flat). Aftermarket versions may have slight wiring differences, so compare your old connector.

Key Things to Know

• Quality: Rated 4.7/5, but some users report shorter lifespan than OEM (2–3 seasons vs. 4–5). Inspect for loose bearings or uneven air gap on arrival.
• Installation: Moderate difficulty—requires basic tools (socket set, torque wrench) and about 1–2 hours. You must set the air gap to 0.010–0.015 inches with a feeler gauge; too tight or loose will cause slippage or noise.
• Common gotchas: The clutch may need a 12V battery test before mounting to ensure engagement. Also, check the mower’s wiring harness for corrosion—bad connections can mimic clutch failure.
• Return policy: Verify the seller’s return window; some aftermarket clutches have no warranty if installed incorrectly.

Should You Buy It

If you need a budget-friendly replacement for a commercial Exmark or Toro mower and are comfortable with basic mechanical work, this is a solid choice. It’s not as durable as OEM, but at roughly half the price, it’s ideal for older machines where you want to extend life without a major investment. Skip it if you require maximum uptime or can’t adjust the air gap yourself.