Gravely ZT HD 48in 25HP Kohler Zero Turn Mower – Heavy Duty (P/N 991274)

Cutting up to 3.5 acres per hour, the Gravely ZT HD 48in 25HP Kohler zero turn mower (P/N 991274) powers through dense estate turf without engine bog. Commercial property owners face constant frustration when lightweight stamped decks scalp undulating lawns or choke in heavy spring grass. This 48-inch heavy-duty machine combines a fabricated 10-gauge steel deck with commercial Hydro-Gear ZT-3100 transaxles and a high-torque 25HP Kohler V-twin engine, delivering clean turf striping at forward speeds up to 8 MPH.

Dual Hydro-Gear ZT-3100 commercial transaxles feature external spin-on oil filters and steel cut gears, providing durable drive power along steep drainage swales. The deep 5-inch fabricated deck pulls air upward, lifting limp grass blades for a crisp, level cut across manicured bluegrass and fescue. An intuitive foot-operated mechanical deck lift allows operators to adjust cutting height across fifteen distinct positions with minimal physical effort.

Key Engineering Features of Gravely ZT HD 48in (P/N 991274)

- 48-Inch Welded 10-Gauge Steel Deck: Delivers heavy plate steel construction with reinforced leading edges for extreme durability.
- 25HP Kohler 7000 Series V-Twin Engine: Supplies massive rotational torque to maintain blade tip speed in tough mowing conditions.
- Hydro-Gear ZT-3100 Commercial Transaxles: Features external spin-on filters and 1-inch axle shafts for smooth 8 MPH travel.
- High-Back Suspension Operator Seat: Adjusts mechanically to operator weight to provide comfort over rough terrain.
- Foot-Operated Mechanical Deck Lift: Adjusts cut heights from 1.5 to 5 inches across 15 distinct positions with an easy-select pin.
- Heavy-Duty Front Caster Forks: Formed steel forks house smooth-rolling pneumatic tires to absorb impact shocks from rough ground.

Field Durability & Operational Economy

Built for demanding estate properties and heavy mowing, this commercial-leaning zero-turn mower provides rugged durability and serviceable hydraulic drives.

- A heavy welded 10-gauge deck handles continuous mowing on multi-acre properties without cracking deck weld seams.
- Serviceable Hydro-Gear ZT-3100 transaxles feature spin-on filters that simplify fluid changes, extending transmission operating life.
- High-lift Marbain alloy cutting blades hold sharp cutting edges longer, reducing blade grinding frequency in the shop.

Acreage Productivity & Trailer Packing

Weighing 785 pounds dry with an operating width of 52 inches with the chute raised, this 48-inch machine clears wide acreage fast and fits easily onto standard commercial landscape trailers.

Warranty Coverage & Field Maintenance

- Gravely backs this ZT HD mower with a 4-Year or 400-hour limited warranty covering the frame, deck, and drive hydraulics.
- The Kohler engine receives full 3-Year manufacturer warranty backing through authorized dealer service centers.

Change engine oil and filter after the initial 20 operating hours, then service every 100 hours with SAE 30 or 10W-30 motor oil. Inspect the air filter weekly on dry grading sites, and maintain spark plug gaps at 0.030 inches. Order the Gravely ZT HD 48in 25HP Kohler zero turn mower from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.