ACEBRI PTO Clutch for John Deere Z710A Z720A Z910A Z920A Z810A, Z820A ZTrak Pro Mower TCA21167 TCA20604 Electric Pto Clutch for Warner 5218-271

What It Is

This is an electric PTO (power take-off) clutch from ACEBRI that engages and disengages the mower blades on select John Deere ZTrak Pro zero-turn mowers. It’s a direct replacement for the OEM Warner 5218-271 clutch, designed for heavy-duty commercial mowing.

Fitment & Compatibility

Before buying, verify your mower model and deck size:

• Compatible models: John Deere Z710A, Z720A, Z910A, Z920A, Z810A, Z820A ZTrak Pro (60” or 72” decks).
• OEM numbers: TCA21167, TCA20604, Warner 5218-271.
• Key measurements: 4.5” outside diameter, 1.125” shaft bore, 3-bolt mounting pattern (bolt circle ~4.25”). Measure your old clutch’s diameter, shaft bore, and bolt spacing—these must match exactly.
• Voltage: 12V DC (standard for most John Deere ZTrak models). Confirm your battery/system voltage.
• Air gap: Factory spec is 0.012” – 0.025”. You may need to adjust after installation.

What to physically check: Remove your old clutch and compare the shaft bore size, bolt pattern, and overall thickness. If your deck is smaller than 60”, this likely won’t fit.

Key Things to Know

• Build quality: ACEBRI is an aftermarket brand. At ~$125, it’s roughly half the price of OEM. Expect decent quality for residential/light commercial use, but not the same longevity as a Warner or John Deere OEM unit.
• Installation difficulty: Moderate. You’ll need a puller to remove the old clutch, a torque wrench (tighten center bolt to 40-50 ft-lbs), and feeler gauges to set the air gap. Wiring is plug-and-play on most models.
• Common gotchas: The air gap is often pre-set too tight or too loose. Check and adjust it before installing. Also, ensure the clutch’s rotor spins freely by hand—if it drags, the bearing may be defective.
• Noise/vibration: Some users report slightly more noise than OEM. If you’re sensitive to that, this may not be ideal for residential use near houses.

Should You Buy It

Buy this if you need a budget-friendly replacement for a ZTrak Pro with a 60”+ deck and are comfortable with basic mechanical work (air gap adjustment, torque specs). Skip it if you mow commercially every day or want OEM reliability—spend the extra for a Warner or John Deere clutch.