Belarus 820 - User Manual

Questions and Answers

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jamesjohnsonAug 10, 2025
How to fix Belarus 820 Tractor if the engine will not start?
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  Alfred MayoAug 10, 2025
  If the Belarus Tractor engine won't start, it could be due to several reasons. First, there might be air in the fuel system; in this case, bleed the system using a manual fuel priming pump and eliminate any air suction in the fuel system. Another potential cause is a fuel pump failure, which requires removing the fuel pump and sending it to a workshop for repair. Lastly, clogged fuel filters can also prevent the engine from starting. Try rinsing the coarse fuel filter and replacing the filter cartridge of the fine fuel filter.
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Andrew IngramAug 17, 2025
Why does black smoke come out of the exhaust pipe of my Belarus 820 at all operation modes?
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  michael34Aug 17, 2025
  If your Belarus Tractor is emitting black smoke from the exhaust pipe, it could be due to a few reasons. A clogged engine air cleaner might be the cause; in this case, perform maintenance on the air cleaner. Another possibility is a stuck nozzle atomizer needle, which requires detecting the failed nozzle, rinsing or replacing the atomizer, and adjusting the nozzle. Finally, a faulty fuel pump could also be the culprit, requiring its removal and repair in a workshop.
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Jennifer MarshAug 26, 2025
What to do if Belarus Tractor engine does not increase power?
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  Aaron RossAug 26, 2025
  If your Belarus Tractor engine isn't increasing power, several factors could be responsible. First, check if the fuel pump control lever reaches the stop; if not, adjust the control rods of the fuel pump. A clogged fine fuel filter cartridge can also limit power, so replace it. Other potential issues include faulty nozzles (detect, rinse, and adjust them), an incorrectly adjusted fuel injection advance angle (set it to the recommended angle), a clogged engine air cleaner (perform maintenance), or a malfunctioning fuel pump (remove and send to a workshop for repair).
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Katie JonesSep 1, 2025
Why does white smoke come out of the exhaust pipe of my Belarus Tractor at all operation modes?
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  apruittSep 2, 2025
  If your Belarus Tractor is emitting white smoke, several issues could be the cause. One possibility is that the engine is operating with over-cooling, so warm up the engine and maintain the coolant temperature between 85-95°C during operation. Another cause could be water in the fuel, requiring you to replace the fuel. Also, check for no gap between valves and rocker arms, and adjust the gaps if necessary. Finally, an incorrectly adjusted fuel injection advance angle could be the problem, so set it to the recommended angle.

Summary

1 Tractor Description and Operation

1.2 Technical specifications

Provides detailed technical parameters and specifications for BELARUS-80.1/82.1/820 tractors.

2 Controls and Instruments

2.1 Layout of controls and instruments of the tractor

2.5 Instrument board

2.7 Tachospeedometer

Explains the tachospeedometer's general information and operation.

2.8 Steering

2.9 Parking brake control

2.12 Tractor pedals and rear axle differential lock control

2.13 Shifting of gears

Explains the general information and procedures for shifting gears in the transmission.

2.14 Front driving axle drive control on tractors “BELARUS-82.1;820”

2.15 Power take-off shafts control

2.16 Hydraulic lift linkage control

Covers general information, HLL pump control, and remote hydraulic cylinders control.

2.16.4 Control of RLL locking mechanism in transport position on tractors without draft control

2.16.5 Control of RLL locking mechanism in transport position on tractors with draft control

2.17 Control elements of RLL and hydraulic hook grips or lowering link with draft control

2.18 Electrical cut-out fuses and relays

Provides general information on electrical fuses and relays and their functions.

2.20 Seat and its adjustments

2.24 Layout of instruments and controls of tractor with molded panel of instrument dashboard

2.26 Multifunctional indicator unit of tractors with dashboard with molded panel

Provides general information and operational principles of the multifunctional indicator unit.

2.28.6 FDA drive control of tractors “BELARUS-82.1” with canopy frame or canopy base on the basis of a small cabin

2.28.7 Rear power take-off shaft engagement of tractors with canopy frame or canopy base on the basis of a small cabin

2.28.8 Control of RLL locking mechanism in transport position on tractors “BELARUS-80.1;82.1” with canopy frame or canopy base on the basis of a small cabin

2.28.9 Operation of rear lift linkage with draft control of tractors with canopy frame or canopy base on the basis of a small cabin

2.28.10 Fuses of dashboard of tractors with canopy frame or canopy base on the basis of a small cabin

2.28.11 Electro-magnetic relays

3 Description and Operation of Tractor Components

3.1 Engine and its systems

3.2 Clutch

Covers the clutch coupling, its peculiarities, and control.

3.3 Gearbox

Covers the gearbox, its general information, and control mechanisms.

3.4 Rear axle

Covers the rear axle, main gear, differential, and final drives.

3.5 Rear power take-off shaft

3.7 Brakes

Covers service brakes, their control, and parking brake.

3.8 Pneumatic system

3.10 Front driving axle

3.12 Hydrostatic steering control (HSC)

3.13 Hydraulic power steering (HPS)

3.14 Hydrostatic steering control with hydraulic power steering housing

3.15 Hydraulic lift linkage

Covers general information and components of the hydraulic lift linkage.

3.16 Rear lift linkage

Covers general information and rules for controlling RLL elements.

3.17 Tow hitches

3.18 Electrical equipment

Covers general information and operation principles of the electrical equipment.

4 Intended Use of Tractor

4.1 Safety measures while preparing tractor for operation

Emphasizes strict observance of safety requirements for tractor operation and reliability.

4.2 Tractor use

4.2.3 Start of tractor movement, GB shifting

Details the procedure for starting tractor movement and gearbox shifting.

4.2.4 Tractor stop

4.2.5 Engine stop

4.2.7 PTO use

Explains the rules for engagement and disengagement of PTO shafts and safety measures.

4.2.8 Selecting of optimal inner pressure in tyres depending on operational conditions and load on tractor axles, instructions for use of tyres

4.2.9 Rear wheel track formation

4.2.11 Front wheel track formation

4.3 Safety measures during tractor operation

Provides general safety measures to ensure safe tractor operation.

4.4 Tractor final assembly and run-in

4.5 Emergency actions

Outlines procedures for emergency tractor stop and engine stop.

5 Coupling of Implements

5.1 General information

5.2 Types of agricultural implements coupled with tractors

5.3 Three-point rear lift linkage

Covers basic parameters and coupling dimensions of the rear lift linkage.

5.5 Use of safety clutches when PTO and cardan shaft are applied

5.6 Peculiarities of use of PTO and cardan shafts

5.7 Ways of changing tractor grip characteristics and passability

5.9 Determination of total weight, loads on front and rear axles, tyres holding capacity and the required minimum ballast

5.10 Possibility of front loader installation

6 Technical Maintenance

6.1 General instructions

Emphasizes the necessity of technical maintenance for tractor operability and longevity.

6.2 Providing access to tractor components for technical maintenance

6.3 Technical maintenance procedure

6.4 Scheduled technical maintenance operations

Details scheduled technical maintenance operations based on operating hours.

6.6 Safety measures during TM and repair operations

Provides crucial safety measures for technical maintenance and repair operations.

7 Possible Failures and Instructions for Troubleshooting

7.1 Possible failures of the engine and instructions for troubleshooting

Details common engine failures and their corresponding troubleshooting steps.

7.2 Possible failures of the clutch and instructions for troubleshooting

Lists possible clutch failures and provides instructions for troubleshooting.

7.3 Possible failures of the gearbox and instructions for troubleshooting

Provides a list of possible gearbox failures and troubleshooting instructions.

7.4 Possible failures of the rear axle and instructions for troubleshooting

Lists possible failures in the rear axle and their troubleshooting instructions.

7.5 Possible failures of the rear power take-off shaft and instructions for troubleshooting

Details possible failures of the rear PTO shaft and troubleshooting steps.

7.6 Possible failures of the brakes and instructions for troubleshooting

Lists possible brake failures and provides troubleshooting instructions.

7.7 Possible failures of the pneumatic system and instructions for troubleshooting

Details possible failures in the pneumatic system and their troubleshooting.

7.8 Possible failures of front driving axle

Lists possible failures of the front driving axle and provides troubleshooting instructions.

7.9 Possible failures of the hydrostatic steering control and instructions for troubleshooting

Covers possible failures of the hydrostatic steering control and their troubleshooting.

7.10 Possible failures of the hydraulic power steering and instructions for troubleshooting

Lists possible failures of the hydraulic power steering and their troubleshooting.

7.11 Possible failures of the hydrostatic steering control with HPS housing and instructions for troubleshooting

Details possible failures of HSC with HPS housing and troubleshooting instructions.

7.12 Possible failures of hydraulic lift linkage and instructions for troubleshooting

Lists possible failures of the hydraulic lift linkage and their troubleshooting.

7.13 Possible failures of the electrical equipment and instructions for troubleshooting

Lists possible failures in the electrical equipment and provides troubleshooting instructions.

7.14 Possible failures of the air ventilation and cab heating system and instructions for troubleshooting

Lists possible failures of the air ventilation and cab heating system and troubleshooting instructions.

8 Tractor Storage

8.1 General instructions

8.8 Safety requirements for preservation

9 Tractor Transportation and Towing

9.1 Tractor transportation

9.2 Tractor towing

Belarus 820 Specifications

General

Engine Power	81 hp
Transmission	Mechanical, 9 forward and 2 reverse gears
Drive	4WD
Fuel Capacity	130 liters
Lift Capacity	3200 kg
PTO Speed	540/1000 RPM
Wheelbase	2450 mm
Length	3930 mm
Width	1970 mm
Height	2850 mm
Engine Type	Diesel
Hydraulic System	Open center