Gravely ZT HD 48in 25HP Kohler Zero Turn Mower – Heavy Duty (P/N 991269)

Spinning commercial high-lift cutting blades, the Gravely ZT HD 48in 25HP Kohler zero turn mower (P/N 991269) discharges clippings evenly across wide acreage without unsightly turf clumps. Commercial landscape contractors face lost profits when heavy cutting decks scalp uneven turf or drop blade speed in thick wet grass. This heavy-duty 48-inch zero-turn mower combines a reinforced 10-gauge steel cutting deck with high-output Hydro-Gear ZT-3100 commercial transaxles and a 25HP Kohler 7000 Series V-twin engine that shrugs off heavy grass resistance.

Commercial Hydro-Gear ZT-3100 transaxles provide smooth ground drive power up to 8 MPH forward speed, tracking straight across steep highway embankments without drive wheel slippage. The fabricated cutting deck features a reinforced front bullnose edge that deflects tree roots, metal edging, and hidden rocks without cracking weld seams. Operators remain comfortable through continuous mowing shifts thanks to an adjustable high-back suspension seat mounted on vibration-isolating rubber dampers.

Key Engineering Features of Gravely ZT HD 48in (P/N 991269)

- 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.
- Constant Belt Tensioning System: Self-adjusting idler arm maintains correct deck belt tension to eliminate manual adjustment downtime.

Engineering Integrity & Operational Economy

Engineered for high-volume mowing operations, this heavy-duty machine delivers exceptional acres-per-hour output and chassis durability.

- A reinforced 10-gauge deck shell withstands accidental tree strikes and curb rubs without warping or throwing blades out of track.
- Commercial Hydro-Gear ZT-3100 hydraulic drives deliver continuous fluid flow to keep wheel motors cool during summer operations.
- High-back suspension seating keeps operators productive through continuous eight-hour shifts without physical downtime.

Target Acreage & Trailer Transport

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.

Factory Warranty Terms & Routine Upkeep

- 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.

Execute oil and filter changes every 100 operating hours using 10W-30 motor oil. Inspect the dual-element air cleaner weekly on dusty routes, check hydraulic fluid levels monthly, and sharpen blades regularly for clean turf cuts. 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.