Which engine to install instead of the old one on the Neva walk-behind tractor

Engine for walk-behind tractor Neva MB-1

The Neva MB-1 walk-behind tractor, popular among owners of small plots of land, is distinguished by its ease of operation and maintenance. Thanks to its small dimensions and low weight, the agricultural unit turned out to be quite maneuverable and, due to large pneumatic wheels, has maximum cross-country ability.

In agriculture, Neva MB-1 walk-behind tractors are used for plowing, loosening soil, harrowing, hilling, as well as planting tuber crops and harvesting. If necessary, a small trailer can be installed on the model, which will allow you to transport up to 0.5 tons of cargo.

The Neva MB-1 walk-behind tractor was able to achieve such versatility thanks to a fairly powerful and durable engine. The model is equipped with different engines - it all depends on the year of manufacture and the purpose of the walk-behind tractor.

The standard factory equipment of the agricultural unit includes a DM-1 gasoline power unit. This is a reliable 4-stroke internal combustion engine with a 25 mm output shaft that rotates counterclockwise. The motor consists of 1 chrome-plated cylinder with a diameter of 76 mm. The piston stroke range is 70 mm.

The model’s engine is supplemented with a float-type direct-flow carburetor, which is designed to enrich the fuel with oxygen and stabilize the engine crankshaft speed in any operating mode. To pre-clean the intake air, the power unit is equipped with a foam air filter.

The engine for the Neva walk-behind tractor is started using a built-in manual starter. The ignition of the model is electronic. To stabilize the operating temperature, the factory design of the walk-behind tractor includes an air cooling system, which sucks in air thanks to the work of centrifugal forces.

DM-1 engine characteristics include:

• volume – 316 cm3;
• power – 5 l. With.;
• rotation speed – 3000 rpm;
• torque indicator - 13.8 Nm;
• fuel tank capacity – 4 l;
• oil sump capacity – 1.3 l;
• Fuel consumption under average loads is 2 l/h.

The engine has received small dimensions. The length of the power unit is 40, width – 45 and height – 47 cm. Motor weight – 28 kg.

Which engine to choose

Subaru

• It is highly environmentally friendly.
• Meets the requirements for permissible exhaust gas concentrations.
• The device is lightweight and compact in size.
• The shortest distance between engine components is achieved through the use of modern materials in the manufacture of the housing.

HONDA

• High performance.
• Power 1.5-12 hp
• The lubrication system is sprayed, which increases the functions of the mechanism.
• Forced air cooling system.
• Automatic decompressors are installed.
• Full compliance with environmental requirements.

Chinese

• high strength;
• modern manufacturing technology;
• low cost;
• versatility;
• availability of spare parts.

Such devices have gained popularity because they are equipped with additional starters and gearboxes. These designs are suitable for all walk-behind tractors and do not require conversion.

Engine for walk-behind tractor Neva MB-2

The MB-2 walk-behind tractor is a modified version of the MB-1 model. It turned out to be even more reliable and durable. At the same time, the manufacturer managed to reduce the fuel consumption when operating the walk-behind tractor at maximum permissible loads.

Like the Neva MB-1, the MB-2 modification is equipped with different 1-cylinder 4-stroke engines with carburetors and manual start, which is done using a retractable cord. Each of the power units is equipped with an air cooling system operating under the influence of centrifugal forces.

The engine is attached to the power frame using reinforced bolts. A 3-groove pulley is responsible for transmitting the rotational force generated by the motor to the gearbox or attachments in the basic motor device. To stabilize engine speed when it is first started, an air damper is provided in the agricultural unit.

The most popular modification of the Neva MB-2 walk-behind tractor, the MB-2K agricultural machine, is equipped with a Russian-made engine, the DM-1K internal combustion engine. The stock crankshaft of this power unit is located horizontally, and the factory valves are located at the top of the engine. The operating volume of the internal combustion engine is 317 cm3, and its maximum permissible power is 6.5 liters. With.

Each engine for the Neva MB-2 walk-behind tractor meets several important parameters.

Among them, the presence of:

• a ball bearing built into the standard crankshaft supports - it is designed to stabilize the vibration load of the engine and make it operate more smoothly under high loads;
• factory automatic decompressor;
• an aluminum block and a repairable standard cast iron sleeve - this design solution gave the manufacturer the opportunity to extend the service life of the sleeve;
• durable foam air filter, which features a 2-level cleaning system;
• reduced noise levels and modest fuel consumption - this was achieved thanks to the location of the valves in the upper part of the engine;
• an improved ignition system that allows you to start the engine without problems in the most difficult weather conditions.

Another important feature of engines is their factory protection against overheating, dust and dirt. Thanks to this, Neva MB-2 walk-behind tractors can be confidently used to solve almost any problem.

Owner reviews

Reviews from real owners who have already purchased the Neva MB23 walk-behind tractor (any modification) will help you understand how your walk-behind tractor will work after purchase.

Andrey, Transcarpathia, Ukraine:

“I am the owner of an SD27 diesel engine. I think it’s a good walk-behind tractor in its modification. The headlight really helps to work in the evening. I can’t say anything bad - I mowed my own grass, carried loads around the site, and cultivated my 20 acres for sowing. Who cares about the quality-to-price ratio, take it, you won’t regret it!”

Nikolay, Moscow region, Russia:

“My father discouraged me from buying a diesel walk-behind tractor; he himself works with a gasoline one. But I bought it and didn’t regret it. There are many advantages, the fact that it is heavy, as many say, is not a disadvantage for me, but rather an advantage. The engine runs quite quietly, which I did not expect. I've been using it for two years now and have had no problems with the MB23. I took a regular one, without a headlight, I don’t need it. Powerful walk-behind tractor, I recommend it!”

Alexander, Poltava region. Ukraine:

“I took the Neva MB23 SD23 from the principle “spare parts are always at hand.” And the price is acceptable, but the Belarusian or Chinese analogues did not impress. From the first days I was happy with the walk-behind tractor, it started easily, it moved smoothly on the ground, there was minimal vibration during operation, this made me very happy. I have a plot of 150 acres, you can’t treat it with a small gasoline block, but diesel rushes like a bull! I recommend."

You can also help other readers of our site with your reviews on this model of walk-behind tractor, if you are the owner of a diesel walk-behind tractor Neva MB-23: modifications SD23, SD27, SD27-SF, you can leave a review about it, or ask any question you are interested in this model below in the comments.

What engine can be installed on the Neva walk-behind tractor?

The design features of the supporting structures of the Neva model range make it possible to install and adapt for operation power units produced by various foreign brands. This expands the capabilities of walk-behind tractors and makes them suitable for operation in the most difficult weather conditions. Below we will consider the brands of engines that can be installed on Neva walk-behind tractors.

Lifan

Lifan brand motors have proven themselves to be durable power units with a tight fit of built-in factory components and a relatively low level of vibration and noise generated. Other features of power units of this brand include reduced fuel consumption and stable operation in almost any weather conditions.

Most often, 4-stroke gasoline engines Lifan 177 F are installed on Neva brand walk-behind tractors. The crankshaft of these internal combustion engines is located in a horizontal position. The design of these engines includes 1 chrome-plated working cylinder with a volume of 270 cm3. The power of the power unit is 9 liters. With. This is enough for high-quality plowing of dense clay soils and cultivation of small areas with virgin soils.

The Lifan 177 F engine is distinguished by the simplicity of its factory design. The minimum number of built-in parts makes maintenance and repair of this motor as quick and easy as possible.

Subaru

In some cases, Subaru brand engines are included in the factory equipment of Neva walk-behind tractors. If the agricultural unit was purchased with a different engine, then it can be replaced with a Japanese power unit with your own hands.

Most often, Robin-Subaru EX 17 4-stroke 1-cylinder gasoline engines are used for installation on Neva walk-behind tractors. They are distinguished by their average power values ​​- this parameter is 6 hp. With. These engines are started using a built-in manual starter, and heated parts are cooled using an air cooling system.

The valves in the Robin-Subaru EX 17 engine are located in its upper part.
The stock crankshaft is in a horizontal position, which reduces the vibration created by the engine. Other powertrain parameters include:

• crankshaft rotation speed – 4000 rpm;
• working cylinder capacity – 169 cm3;
• fuel tank capacity - 3.6 l;
• oil sump capacity – 0.6 l;
• compression index – 8.5;
• the maximum permissible torque is 8.1 Nm.

The Robin-Subaru EX 17 engine is equipped with an improved lubrication system, which operates on the principle of oil splashing. This allows you to save lubricating fluid even when the engine is operating under the highest possible loads.

Patriot

Among the main design features of Patriot brand engines, it is necessary to highlight the built-in durable filter with 3-level purification of the intake air. The filter is designed in such a way that even if 70% of the area is heavily clogged, it regularly performs its tasks, ensuring a stable supply of clean air to the carburetor.

In most cases, replacing the engine on a Neva walk-behind tractor is done using a 4-stroke, 1-cylinder gasoline engine, the Patriot SR 210. It is distinguished by its modest physical dimensions and light weight. At the same time, its maximum power is 7 liters. With. sufficient for quick and high-quality plowing of small and medium-sized areas with hard clay soils.

The motor in this configuration is equipped with a durable shaft, the diameter of which is 19.05 mm. The maximum permissible torque of the power unit is 14 Nm, and the engine fuel consumption is 360 g/kW/h.

The ignition of the Patriot SR 210 engine is transistor-magnetic. It works reliably even when starting the engine in the most difficult weather conditions.

Honda

In the event of a breakdown of the standard power unit, Honda GX 160 and GX 200 engines can be installed on Neva walk-behind tractors. Among the main advantages of the Japanese brand’s internal combustion engine is a simplified design with the most tightly fitted components and factory mechanisms. Thanks to the small number of parts, even a novice user can repair Honda engines.

The GX series from the Japanese brand is one of the most popular lines of engines for agricultural machinery.

Among the advantages of these motors it is necessary to highlight:

• easier start-up, which was achieved thanks to the built-in decompression system;
• compliance with the highest environmental safety standards;
• reduced fuel and lubricant consumption;
• More efficient fuel combustion thanks to proprietary OHV design.

The GX 160 and GX 200 engines stand out with average power ratings of 5.5 and 6.5 liters. With. respectively. This does not prevent them from successfully solving the tasks assigned to them even when working under the highest loads.

How to change the engine on a Neva walk-behind tractor

The Neva MB1 and MB2 models were previously produced only with the Russian DM-1K engine. Nowadays they also produce units with imported engines from Subaru and others. First, you need to decide which engine is best suited for your walk-behind tractor. If you install an imported motor, the cultivator will work much longer. But such designs are very expensive. Therefore, when replacing motor cultivator engines, you must first find out which devices are more durable, reliable and inexpensive. You need to decide what can replace Japanese-made systems, and also choose who will install the mechanism: a car service specialist or the owner of the walk-behind tractor.

Currently, there are many different options for replacing the engine for the Neva cultivator, the most common of them:

• Subaru;
• Honda;
• devices made in China.

The appropriate option is chosen depending on climatic conditions, type of soil and other characteristics.

Let's look at the characteristics of the engine supplied by Robin Subaru. The motor housing is made of durable material, which determines its long service life. The crankshaft is made of steel, connected on both sides by bearings, and has a high-tech air purification system. The electronic ignition system replaces the coil, cast iron liners increase power. Subaru engines are highly durable. Even under heavy loads, the oil will not overheat, since special channels have been created for cooling the block and the head of the device.

Currently, an increased degree of depreciation of devices has been achieved. The company produces a large number of spare parts for Subaru engines. The motor does not consume a lot of oil. The cylinders are located vertically, thanks to which all contacting parts are well lubricated. This determines the large amount of shaft torque. Crankcase ventilation has become better, the oil intake ring has a special improved design. Subaru has replaced the camshaft and piston section. The farmer can deal with minor breakdowns during engine operation on his own, since troubleshooting is not difficult.

In the Subaru system, the air filter has a special design. The crankshaft is fixed rigidly, thanks to this there is no noise when the engine is running. It has a fast start-up. The starter is equipped with an enlarged bobbin, which helps to quickly overcome resistance when starting. The driver does not have to make much effort when starting a cultivator with a Subaru engine thanks to automatic compression reduction.

What kind of oil should I put in the Neva walk-behind tractor?

To answer this question, you need to know which power unit is installed in the basic device of the walk-behind tractor. Many engine developers produce not only components for internal combustion engines, but also consumables, including lubricants.

Most often, the following brands of oil are used to lubricate engine parts:

• Robin-Subaru – for summer use, you can choose Robin-Subaru oils marked SAE 10W-30. SAE 5W-30 lubricant from the same manufacturer is suitable for winter use;
• Lifan – the most popular oil among owners of agricultural machinery is Lifan SAE 10W-30, which is considered universal by many;
• Honda - when choosing a lubricant from this brand, you need to take into account the operational class of the equipment. For Neva walk-behind tractors, you must choose oils with the SF and SG marks.

Sometimes oils produced by Briggs & Stratton are used to operate Neva walk-behind tractors.
It ensures stable operation of the motor and protects its components from rust and the accumulation of resinous deposits. The oil in Neva walk-behind tractors is changed only if, during inspection, a large accumulation of metal shavings and solid fractions was found in its composition. At the same time, the lubricant must be changed at least once every 50 operating hours.

Engines KASEI / MOTORTECHNIKA NEVA

KASEI gasoline engines are presented on several models of NEVA motor cultivators and walk-behind tractors. These internal combustion engines are produced at a Chinese plant, which previously produced SUBARU EX series engines, well known in Russia. In 2022, these engines received a new name “NEVA MOTORTECHNIKA”, and also changed color from black to blue.

• Engine Kasei 168F
• Engine Kasei 168FA
• Engine Mototechnics NEVA DM163
• Engine Mototechnics NEVA DM196

Gasoline engines KASEI 168F (now MOTOTEHNIKA NEVA DM163) are presented on the MK70 and MK100R motor cultivators. KASEI 168FA motors (now MOTOTEHNIKA NEVA DM196) equip the MB Compact walk-behind tractor, as well as the MB2 KS. In terms of technical characteristics, the products are typical representatives of power units for domestic use (motor life - 800 hours). The KASEI 168F engine installed on a motor cultivator will last 25 years when operating 30 hours a year. If you install a 168FA motor on a walk-behind tractor, it will work for 11 years (if the equipment is in operation for 100 hours a year).

Which oil to choose for a gasoline engine

The operating manuals for internal combustion engines installed on walk-behind tractors and walk-behind cultivators list suitable motor oils for them.
For convenience, we have combined this information into a common table. Important parameters when choosing an oil are API classification and viscosity index. For NEVA motorcycles, it is better to buy original motor oil in dealer network stores. We invite residents of St. Petersburg and the Leningrad region to visit our company store. Table of application of motor oils