SCAG Liberty Z® 8C11 SZL-36H-18FR 36" Zero-Turn Riding Mower with Hero Cutter Deck and Kawasaki® FR600V V-twin Engine 18 HP. Because every home deserves stripes, the Liberty® Z is designed and manufactured to deliver a top-of-the-line experience at a homeowner price point. A professionally-constructed mower, fit for your own lawn. The Liberty Z® gives more people the chance to see why Scag® machines are Simply the Best.