Bush Hog® HDE-4 Estate Series ZT Mower

Limited Availability


  • Robotically Welded 7GA Steel Decks
  • ZT-3100™ Dual Transaxles from Hydro-Gear®
  • Electronic Control Module
  • Keyless Start/Stop
  • Soft Start PTO
  • Center-Mounted 8 Gallon Fuel Tank
  • Pin-Out Deck Height Selection
HDEzt4 product
Notes: Unit shown equipped with certain selections and options. Please consult with your local Bush Hog dealer for all available configurations.

Product Features

  • 49″, 55″, and 61″ Deck Widths
  • Engine Selections from Kohler and Kawasaki up to 25HP
  • Seat Selection of Non-Suspension Seat w/ Isolator or Full Suspension Seat
  • Manual Pin-Out Deck Height Selection
  • Hydro-Gear® ZT-3100™ Dual Transaxles
  • 23 x 10.50-12 Turf/Bar Drive Tires
  • US Forestry Service Approve Spark Arrestors
  • Steering Handle Tracking Adjustment

Construction Features

  • Robotically Welded 7GA Steel Deck
  • 2″ x 2″ Welded Steel Frame
  • Center-Mounted 8 Gallon Fuel Tank

Safety Features

  • Safety Interlock Indicators:  PTO Engagement, Parking Brake, Steering Handles, Operator Presence
  • 2″ Diamond Foldable ROPS

Product Features

hdezt4 chair

HDE Series seat selection includes Non-Suspension Seat with Elastic Isolators or Deluxe, Full Suspension Seat (pictured).


8 gallon under the seat fuel tank for improved weight distribution, lower center of gravity, improved ride and protection from impact/damage.

hdezt4 spark

Spark arrestors standard on all models. Units approved for use on US Forest Service Lands.

hdczt4 molded

Injection molded fenders with reinforced ribs; molded in beverage holder and storage tray.


hdczt4 deck

Robotically welded, heavy duty 7GA steel cutting deck in widths of 49″, 55″ and 61″. (The same grade steel used on Bush Hog®’s heavy duty flex-wing cutters!)

hdczt4 led

Patent-pending rotary height-of-cut adjustment with transport lock on HDC/HDZ models, pin-out height selection on HDE models.

hdzzt4rearbumper copy

Rear bumper with hitch to protect the engine and provide a connection point for optional accessories.

Good for Tractors rated 40hp or under


Deck Size
49”, 55” and 61”
Engine Options
Kohler 7000 Series, Kawasaki FS651, Kawasaki FS691, Kohler 7000 Series+PRO Filtration
Drive System
Hydro-Gear® ZT-3100™ Dual Transaxles
Front Axle
Hydraulic Braking, Disc-Type Parking Brake
Steering Motor Control
Dampened Twin Levers, Adjustable Fore, Aft and Vertically, Steering Handle Tracking Adjustment
Front Caster Tires
13 x 6.5-6 – 4-Ply Tubeless
Drive Tires
23 x 10.50-12 Turf or Bar Type
Infinitely Variable 0-8 mph Forward, 0-4 mph Reverse
Blade Tip Speed
18,000 fpm
Electronic Control Module w/Keyless Start and System Monitoring, Safety Interlock Controls and Soft-Start PTO Engagement
System Monitoring
Low Fuel and Oil Level Indicators, Tachometer and Hourmeter
Safety Interlock Controls
PTO Engagement, Parking Brake, Steering Handles and Operator Presence
Molded-in Large Beverage Holder and Storage Tray, Tethered Gas Tank Cap, Electronic Control Module
Electromagnetic Clutch Rated at 200 ft lbs
Fuel Tank
8-Gallon Center Mounted Tank with Single, Wide-Mouth Fill Point
Standard Seat
High-Back, Foam Padded Seat with Flip-Up Armrests and Seat Platform Elastic Isolators and Custom Embroidered Bush Hog® Logo, Deluxe Full-Suspension Seat Optional
Deck Construction
7-Gauge Reinforced, Robotically Welded Steel
Deck Lift
Manual Foot Lift with Pin-Out Height Selection
(3) 0.204 Inch Thick, Heat-Treated High Alloy Steel
Cutting Height
1-1/2″ to 5″, Adjustable in 1/4″ Increments
Certified Operator Presence and Safety Interlock Controls, 2” Diamond Foldable ROPS and Seat Belt
12 Volt, Rated 350 CCA
Carbon Canister to control Hydrocarbon Emissions, and US Forestry Service approved Spark Arrestors




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