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Belarus 420A

The Belarus 420A is a tractor produced by Belarus. It is equipped with a 253.2 ci 4.1 L engine. The listed engine power is Diesel (listed): 57 hp / 42.5 kW. Transmission: 11 forward and 8 reverse. Operating weight: 7300 lbs 3311 kg.

Engine Power
Diesel (listed): 57 hp / 42.5 kW
Fuel & Capacities
19.5 gal 73.8 L
Transmission
11 forward and 8 reverse
Operating Weight
7300 lbs 3311 kg

Overview

Belarus 420A tractor photo
1983 - 1997 400A SeriesUtility tractor 400A Series Utility tractor
Production
Manufacturer
Belarus
Utility tractor
Built in Minsk, Belarus
Original price was $14,500 in 1997
Variants
400A
2WD ROPS
405A
2WD Cab
420A
4WD ROPS
425A
4WD Cab
Belarus 420A Engine
Belarus 4.1L 4-cyl diesel
Engine details ...
Belarus 420A Power
Engine
57 hp 42.5 kW
PTO (claimed)
51 hp 38.0 kW
Drawbar (tested)
43.73 hp 32.6 kW
PTO (tested)
50.68 hp 37.8 kW
Performance test details ...
Mechanical
Four-wheel drive
Final drives
spur gear
Differential lock
mechanical rear
Power steering
Mechanical band brakes
Four-post ROPS.
Capacity
Fuel
19.5 gal 73.8 L
Hydraulic system
4.1 gal 15.5 L
Hydraulics
Type
open center
Capacity
4.1 gal 15.5 L
Pressure
2050 psi 141.3 bar
Valves
2
Pump flow
11.9 gpm 45.0 lpm
Tractor hitch
Rear Type
II
Control
position and draft control
Rear lift (at ends)
2990 lbs 1356 kg
Power Take-off (PTO)
Rear PTO
independent
Rear PTO Type
540 (1.375)
Engine RPM
540@1620
Dimensions & Tires
Wheelbase
88.6 inches 225 cm
Weight
7300 lbs 3311 kg
Front tire
8.00-20
Rear tire
13.6-38
Full dimensions and tires ...
Electrical
Charging system
alternator
Charging amps
50
Battery volts
12
References
420A references literature
400 Series published in 1996, by Belarus
420/400AN published by Belarus
400A/420A published by Belarus

Engine

Engine Detail — 253.2 ci / 4.1 L Diesel

Manufacturer
Belarus
Fuel Type
Diesel
Configuration
4-cylinder, air-cooled
Displacement
253.2 ci 4.1 L
Bore/Stroke
4.13x4.72 inches 105 x 120 mm
Power
57 hp 42.5 kW
Air cleaner
oil bath
Compression
16.5:1
Rated RPM
1800
Torque
162 lb-ft 219.7 Nm
Torque RPM
1350
Firing order
1-3-4-2
Starter volts
12

Transmission

Transmission options
8-speed gear
11-speed

Transmission — 8 forward and 6 reverse gear

Type
gear
Gears
8 forward and 6 reverse
Clutch
dry disc
420A gear speeds

Transmission — 11 forward and 8 reverse

Gears
11 forward and 8 reverse
Clutch
dry disc
420A speeds

Dimensions

Belarus 420A Tires
Ag front
8.00-20
Ag rear
13.6-38
Dimensions
Wheelbase
88.6 inches 225 cm
Weight
7300 lbs 3311 kg
Front tread
53.1 to 71.1 inches 134 to 180 cm
Rear tread
54.1 to 72.4 inches 137 to 183 cm

Tests

Nebraska Tractor Test 1638
Diesel 11-speed 4WD May 11 - 21, 1990 Link: Nebraska Tractor Test 1638 file
PTO performance
Power at rated engine speed
50.68 hp 37.8 kW
Fuel use
3.1 gal/hour 11.7 l/hour
Drawbar performance
Max power
43.73 hp 32.6 kW
Fuel use
3.1 gal/hour 11.7 l/hour
Gear 6 used for power test.
Max pull
7,435 lbs 3372 kg
Gear 3 used for pull test.

Photos

Belarus 425AN

Belarus 425AN

Recommended Implements & Sizing Guide

Engineering recommendations for Belarus 420A based on its 57 HP power envelope and ASAE agricultural standards.

Implement & OperationRecommended SizeWorkload RatingEngineering Notes
Moldboard PlowPrimary Tillage
3 to 4 Bottom (16")3 - 4 铧 (40 cm)Heavy DutySuitable for medium loam and stubble turnover.
Rotary Cutter / MowerMowing & Clearing
6 ft (72 in)1.8 mMedium DutyMedium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep
66 to 72 in165 - 180 cmMedium DutyStandard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage
7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙Medium DutyField leveling and clod breaking behind plows.
Hay BalerHay & Forage
Small Square Baler (14x18")小方捆打捆机 (36x46 cm)Medium DutyClassic 2-string baler for horse and small livestock hay.
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Belarus 420A.

Estimated Continuous Field Runtime: 6.6 hrs

Approximately 6.6 hours of continuous field operation at ~75% rated power on a full tank (19.5 gal / 73.8 L).

Estimated 75% Load Fuel Burn~3 gal/hr (11.2 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

Belarus 420A Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Belarus 420A.

Converted Equivalents:

Horsepower (HP)57 hp
Kilowatts (kW)42.5 kW
Metric Horsepower (PS / CV)57.8 PS

Direct Competitor Comparison

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