The Kubota ZD221 is a 2WD zero-turn mower from the Z200 series. This tractor was manufactured by Kubota from 2008 to 2018. The Kubota ZD221 is equipped with a 0.8 L (47.5 cu·in) three-cylinder diesel engine and a hydrostatic transmission with infinite forward and reverse gears.
The Kubota ZD221 zero-turn mower used the Kubota D782 engine. It is a 0.8 L, 778 cm2, (47.5 cu·in) three-cylinder natural aspirated diesel engine with 67.0 mm (2.64 in) of the cylinder bore and 74.0 mm (2.91 in) of the piston stroke. This engine produced 21.4 PS (15.7 kW; 21.0 HP) at 3,200 rpm of maximum output power.
The Kubota ZD221 is equipped with differential power steering, wet discs type brakes, open operator station with two-post ROPS and 23.0 liters (6.0 US gal.; 5.1 Imp. gal) fuel tank.
Following attachments are available for the Kubota ZD221 zero-turn mower:
- Mid-mount Kubota RCK48P-222Z 48 in (1,210 mm) mower deck with 2-blades
 - Mid-mount Kubota RCK54P-227Z 54 in (1,370 mm) mower deck with 2-blades
 
Kubota ZD221 Specifications
| General Specifications | |
| Model | Kubota ZD221 | 
| Length | 2,130 mm (83.9 in) | 
| Width | 1,210 mm (47.6 in) | 
| Height | 1,770 mm (69.7 in) | 
| Wheel base | 1,295 mm (51 in) | 
| Ground clearance | 130 mm (5.1 in) | 
| Weight | 550 kg (1,213 lbs) | 
| Fuel tank capacity | 23.0 liters (6.1 US gal.; 5.1 Imp. gal) | 
| Battery | 12V, CCA: 450A | 
| Cabin type | Open operator station with two-post ROPS | 
| Engine | |
| Engine model | Kubota D782 | 
| Engine type | Four-stroke, liquid-cooled, inline | 
| Cylinders | 3 | 
| Fuel type | Diesel | 
| Displacement | 0.8 L, 778 cm2, (47.5 cu·in) | 
| Bore and stroke | 67.0 mm X 74.0 mm (2.64 in X 2.91 in) | 
| Horsepower | 21.4 PS (15.7 kW; 21.0 HP) at 3,200 rpm | 
| Starter | Electric | 
| Oil capacity: | 3.5 L (3.7 US. qt, 3.1 Imp. qt.) | 
| Coolant capacity: | 2.1 L (2.2 US. qt, 1.8 Imp. qt.) | 
| Transmission and chassis | |
| Chassis | 4×2 2WD | 
| Steering type | Differential power | 
| Brakes | Wet discs type | 
| Transmission model | – | 
| Transmission type | Hydrostatic | 
| Gears | Infinite forward and reverse | 
| Speed | Forward: 14.5 kmh (9 mph) Reverse: 8.0 (5 mph) | 
| Transmission oil capacity | 7.5 L (2 US. gal, 1.6 Imp. gal.) | 
| Tires | |
| Front tires | Lawn/turf: 13×5.0-6 | 
| Rear tires | Lawn/turf: 23×10.5-12 | 
| PTO (Power take-off shaft) | |
| Middle PTO type | Independent with hydraulic wet disc clutch | 
| Middle PTO speed | – | 

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