Zetor 25A: all source data
All 44 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Zetor |
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| (no label) | Standard-tread tractor |
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| (no label) | Built in Brno, Czechoslovakia |
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| Total built | 158,570 |
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Engine| (no label) | Zetor 2.1L 2-cyl diesel |
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| Fuel tank | 11.9 gal | 45.0 L |
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Transmission| (no label) | 6-speed gear |
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Power| Engine | 25 hp | 18.6 kW |
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Mechanical| (no label) | Two-wheel drive |
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| (no label) | Open operator station. |
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Pto| Rear PTO | live |
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| Rear PTO Type | 540 |
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| Engine RPM | 535@1600 |
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Dimensions| Wheelbase | 74.8 inches | 189 cm |
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| Weight | 4026 lbs | 1826 kg |
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| Front tire | 5.50-16 |
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| Rear tire | 11.25-24 |
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Electrical| Ground | negative |
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| Charging system | generator |
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| Charging amps | 12.5 |
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| Battery volts | 12 |
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| Battery AH | 150 |
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Engine
Engine detail| (no label) | Zetor |
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| (no label) | diesel |
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| (no label) | 2-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 126.8 ci | 2.1 L |
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| Bore/Stroke | 4.134x4.724 inches | 105 x 120 mm |
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| Power | 25 hp | 18.6 kW |
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| Compression | 18:1 |
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| Rated RPM | 1800 |
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| Starter volts | 12 |
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| Starter power | 4 hp | 3.0 kW |
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Transmission
Transmission| Type | gear |
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| Gears | 6 forward and 2 reverse |
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| Clutch | dry disc |
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Dimensions
Tires| Ag front | 5.50-16 |
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| Ag rear | 11.25-24 |
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Dimensions| Wheelbase | 74.8 inches | 189 cm |
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| Length | 126 inches | 320 cm |
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| Weight | 4026 lbs | 1826 kg |
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| Clearance (front axle) | 16.5 inches | 41 cm |
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| Front tread | 47.2 to 59.1 inches | 119 to 150 cm |
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| Rear tread | 47.2 to 59.1 inches | 119 to 150 cm |
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