The new Z997R is John Deere’s most powerful zero-turn mower featuring a 37.4-hp. Final Tier 4 diesel engine. The Z997R excels in the toughest mowing conditions with front-mower-like power in a zero-turn mower while providing the productivity and dependability that commercial landscape contractors value. The model comes equipped with a 60-inch/72-inch 7-Iron PRO side-discharge deck or an industry-exclusive 60-inch 7-Iron PRO Mulch On Demand deck. A 60-inch 7-gauge fabricated rear-discharge deck is available as well. For peak operator comfort, the Z997R boasts a Comfort & Convenience package with ergonomic grips, power deck lift, and PTO cutoff in the handle.