Kubota Z421

Kubota Z421The Kubota Z421 KW/KWT is a 2WD zero-turn mower from the Z400 series. This tractor has been manufactured by Kubota since 2017. The Kubota Z421 is equipped with a 0.7 L two-cylinder gasoline engine and hydrostatic transmission with infinite forward and reverse gears.

The Kubota Z421 zero-turn mower used the Kawasaki FS730V engine. It is a 0.7 L, 726 cm2, (44.3 cu·in) V-twin natural aspirated gasoline engine with 78.0 mm (3.07 in) of the cylinder bore and 76.0 mm (2.99 in) of the piston stroke. This engine produced 24.3 PS (17.9 kW; 24.0 HP) at 3,600 rpm of maximum output power.

The Kubota Z421 is equipped with power steering,two-post folding ROPS and 25.7 liters (6.8 US gal.; 5.7 Imp. gal) fuel tank.

Following attachments are available for the Kubota Z421 zero-turn mower:

  • Z421KW: mid-mount Kubota RCK54-400Z – 54 in (1,370 mm) mower deck
  • Z421KWT: mid-mount Kubota RCK60-400Z – 60 in (1,520 mm) mower deck

Kubota Z421 KW/KWT Specifications

General Specifications
Model Kubota Z421 KW/KWT
Length 2,055 mm (80.9 in)
Width Z421KW: 1,235 mm (48.6 in)
Z421KWT: 1,376 mm (54.2 in)
Height 1,770 mm (69.7 in)
Wheel base 1,255 mm (49.4 in)
Weight Z421KW: 395 kg (870 lbs)
Z421KWT: 410 kg (904 lbs)
Fuel tank capacity 25.7 liters (6.8 US gal.; 5.7 Imp. gal)
Battery 12V, CCA: 300A
Cabin type Two-post folding ROPS
Engine
Engine model Kawasaki FS730V
Engine type Four-stroke, air-cooled, V
Cylinders 2
Fuel type Gasoline
Displacement 0.7 L, 726 cm2, (44.3 cu·in)
Bore and stroke 78.0 mm X 76.0 mm (3.07 in X 2.99 in)
Horsepower 24.3 PS (17.9 kW; 24.0 HP) at 3,600 rpm
Starter Electric
Oil capacity: 2.1 L (2.2 US. qt, 1.8 Imp. qt.)
Spark plug NGK BPR4ES
Transmission and chassis
Chassis 4×2 2WD
Steering type Power
Brakes
Transmission model Hydro-Gear ZT3400
Transmission type Hydrostatic
Gears Infinite forward and reverse
Speed Forward: 16.0 kmh (9.9 mph) Reverse: 8.0 (5 mph)
Transmission oil capacity 4.8 L (1.3 US. gal, 1.1 Imp. gal.)
Tires
Front tires Lawn/turf:
Z421KW: 13×5.0-6
Z421KWT: 13×6.5-6
Rear tires Lawn/turf:
Z421KW: 24×9.5-14
Z421KWT: 24×12-14
PTO (Power take-off shaft)
PTO type Belt driven with electric cluth type
Front PTO speed
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. In addition, the characteristics may vary depending on the modification and market. We do not provide advice on technical issues related to the any operation or repair. We do not recommend using provided information for repairing or spare parts ordering, use only official service manuals and spare-parts catalogs.

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