Kubota ZD28

Kubota ZD28The Kubota ZD28 is a zero-turn mower model from the ZD series, manufactured by Kubota from 2002 to 2006. It was available in two-wheel drive (2WD) version.

The Kubota ZD28 is equipped with a 1.1 L (68.5 cu·in) three-cylinder diesel engine with 78.0 mm (3.07 in) of the cylinder bore and 78.4 mm (3.09 in) of the piston stroke, and a hydrostatic transmission with infinite forward and reverse gears.

The Kubota ZD28 zero-turn mower features:

  • The Kubota D1105 diesel engine which produces 28.4 PS (20.9 kW; 28.0 HP) of horsepower
  • 2-Hand levers steering
  • Internal expanding shoe brakes
  • Open operator station with two-post ROPS
  • Independent front PTO with 2,540 rpm

General specifications

General Specifications
Model Kubota ZD28
Tractor type Zero-turn mower
Production years 2002-2006
Factory
Dimensions and weight
Length 2,260 mm (89 in)
Width 1,450 mm (57.1 in)
Height 1,190 mm (46.9 in)
Wheel base 1,360 mm (53.5 in)
Weight 650 kg (1,433 lbs)
Fuel capacity
Fuel tank capacity 30.0 liters (7.9 US gal.; 6.6 Imp. gal)

Engine

Engine Specifications
Engine model Kubota D1105
Engine type 4-stroke, SOHC, three-cylinders
Displacement 1.1 L, 1,123 cm3, (68.5 cu·in)
Bore and stroke 78.0 mm X 78.4 mm (3.07 in X 3.09 in)
Max. horsepower 28.4 PS (20.9 kW; 28.0 HP)
Cooling system Liquid-cooled
Coolant capacity: 3.8 L (4 US. qt, 3.3 Imp. qt.)
Fuel used Diesel fuel
Starting system Electric starting with 12V starter
Starting support device Glow plug in combustion chamber
Governor All speed mechanical governor
Charging system Alternator 12V
PTO shaft rotation Counterclockwise
Valve clearance
Intake valve clearance: 0.145-0.185 mm (0.0057-0.0073 in)
Exhaust valve clearance: 0.145-0.185 mm (0.0057-0.0073 in)
Oil system
Lubrication system: Forced lubrication by trochoid pump
Oil type: CF or higher
Recommended oil: SAE 10W-30, 10W-40
Oil capacity: 3.4 L (3.6 US. qt, 3 Imp. qt.)
Oil pressure: At idle speed: 49 MPa (0.5 kgf/cm2, 7 psi)
At rated speed: 196 to 441 MPa (2.0-4.5 kgf/cm2, 28 to 64 psi)
Oil filter: Full flow paper filter (Cartridge type)
Oil pressure indicating: Electrical type switch
Oil and oil filter change interval: Every 200 hours
Fuel system
Fuel injection pump: Bosch MD type mini fuel injection pump
Injection nozzle: Mini Nozzle (DNOPD)
Firing order: 1-2-3
Injection pressure: 13.73 MPa (140 kgf/cm2, 1,991 psi)

Transmission and chassis

Chassis, steering and brakes
Chassis 4×2 2WD
Steering type 2-Hand levers
Brakes Internal expanding shoe
Transmission
Transmission manufacturer or model HST
Transmission type Hydrostatic
Gears Infinite forward and reverse
Speed Forward: 15.0 kmh (9.3 mph)
Reverse: 8.3 kmh (5.2 mph)
Transmission oil capacity 4.0 L (1.1 US. gal, 0.9 Imp. gal.)

Tires

Tires
Front tires Lawn/turf: 15×6.0-6
Rear tires Lawn/turf: 23×10.5-12

PTO (Power take-off shaft)

PTO
Middle PTO type Independent
Middle PTO speed 2,540 rpm

Electrical system

Electrical system
Ground Negative
Charging system
Charging amps
Battery 12V, CCA: 450A

Attachments

Kubota RCK60-28Z: 60″ mid-mount mower with 3-blade
Cutting width 1,520 mm (60.0 in)
Overall width 1,840 mm (72.8 in)
Cut height 20-120 mm (1 to 5 in)
Kubota RCK72-28Z: 72″ mid-mount mower with 3-blade
Cutting width 1,820 mm (72.0 in)
Overall width 1,900 mm (75.0 in)
Cut height 20-120 mm (1 to 5 in)

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