Introduction
Zetor 6421: Technical Overview
The Zetor 6421 is a two-wheel-drive agricultural tractor produced between 2004 and 2007 at the Zetor manufacturing facility in Brno. This model belongs to the 6441 series and is designed for general-purpose field operations and light-to-medium agricultural tasks.
Engine and Performance
The tractor is powered by a 4.2-liter, 4-cylinder turbocharged diesel engine. It generates 64 horsepower (47.7 kW) at a rated speed of 2200 RPM. The engine is liquid-cooled, ensuring thermal stability during prolonged operation. The electrical system utilizes a 12-volt starter.
Transmission and Drivetrain
The 6421 offers two transmission configurations: a 10-speed syncromesh gearbox with 2 reverse gears, or a 12-speed mechanical shuttle transmission. Both options feature a 304.8 mm hydraulic cerametallic disc clutch for power transmission. The machine is configured as a two-wheel-drive unit.
Hydraulics and Hitch
The hydraulic system is an open-center design providing a total flow of 18 gpm (68.1 lpm), with 14 gpm available at the pump. It operates at a pressure of 2900 psi (200 bar) and supports three valves. The rear hitch is a Category I/II type, equipped with position and draft control, offering a lift capacity of 6,830 lbs (3,098 kg).
PTO and Operator Environment
The tractor features an independent rear Power Take-Off (PTO) system with selectable 540/1000 RPM speeds. The operator platform is equipped with a two-post folding ROPS as standard, with a climate-controlled cab available as an optional configuration.
Dimensions and Weight
With a wheelbase of 90 inches (228 cm) and a ground clearance of 22 inches (55 cm), the tractor is built for stability and maneuverability. The total weight is 7,240 lbs (3,284 kg). The front and rear tread widths are adjustable between 56 and 71 inches (142 to 180 cm).
Conclusion
The Zetor 6421 is a robust, mechanical-focused utility tractor suited for farmers requiring a reliable two-wheel-drive platform for standard field implements. Its combination of high-capacity hydraulic output and versatile transmission options makes it a dependable choice for mid-range horsepower operations.
Production Information of Zetor, 6421
- Built in Brno, Czechoslovakia
| Manufacturer | Zetor |
|---|
Dimension and Tires Information of Zetor, 6421
| Ground clearance | 22 inches [55 cm] |
|---|---|
| Wheelbase | 90 inches [228 cm] |
| Height (cab) | 102 inches [259 cm] |
| Height (ROPS) | 103 inches [261 cm] |
| Length | 152 inches [386 cm] |
| Front tread | 56 to 71 inches [142 to 180 cm] |
| Weight | 7240 lbs [3284 kg] |
| Width | 73 inches [185 cm] |
| Rear tread | 56 to 71 inches [142 to 180 cm] |
| Ag front | 9.00-16 |
|---|---|
| Ag rear | 16.9-30 |
Engine Specifications of Zetor, 6421
- Zetor
- Liquid-cooled
- Turbocharged diesel
- 4-cylinder
| Rated RPM | 2200 |
|---|---|
| Displacement | 254 ci [4.2 L] |
| Starter volts | 12 |
| Power | 64 hp [47.7 kW] |
Transmission Information of Zetor, 6421
Transmission variants 1
| Type | Syncromesh |
|---|---|
| Gears | 10 forward and 2 reverse |
| Clutch | 304.8mm hydraulic cerametallic disc |
Transmission variants 2
| Type | Mechanical shuttle |
|---|---|
| Gears | 12 forward and reverse |
| Clutch | 304.8mm hydraulic cerametallic disc |
- 10-speed syncromesh
- 12-speed mechanical shuttle
Mechanical Specs of Zetor, 6421
- Two-wheel drive
- Two-post folding ROPS. Cab optional with air-conditioning.
Power Information of Zetor, 6421
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of Zetor, 6421
| Type | Open center |
|---|---|
| Total flow | 18 gpm [68.1 lpm] |
| Pump flow | 14 gpm [53.0 lpm] |
| Pressure | 2900 psi [200.0 bar] |
| Valves | 3 |
Three-Point Hitch of Zetor, 6421
| Rear Type | II/I |
|---|---|
| Control | Position and draft control |
| Rear lift | 6830 lbs [3098 kg] |
Where it sits
Its power puts it in the 42th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Zetor 6421 have?
The Zetor 6421 delivers 64 HP.
What years was the Zetor 6421 produced?
The Zetor 6421 was produced in 2004-2007.
What engine does the Zetor 6421 have?
The Zetor 6421 is powered by a Turbocharged diesel, 4-cylinder engine.
What transmission does the Zetor 6421 use?
The Zetor 6421 uses a Syncromesh transmission.
How much does the Zetor 6421 weigh?
The Zetor 6421 weighs 7240 lbs [3284 kg].
Is the Zetor 6421 4WD?
The Zetor 6421 is available in 2WD.