Motoblock Neva with Subaru engine - setup and installation

JSC "Red October" from St. Petersburg is a leading enterprise in the production of a variety of agricultural equipment in Russia and the CIS, including the Neva-mini motorized cultivator. The full-cycle production technical base allows us to produce durable and reliable equipment that has passed international certification.

The Neva-mini cultivator is equipped with a 5 hp Subaru engine. The weight of the unit is minimal - 51 kg, and the cultivation width is 30/60 cm.

Neva walk-behind tractors have been coming off the production line since 2002. Thanks to the accumulated experience and high-quality technologies, modern models are distinguished by their power, as they are equipped with engines from the world's leading manufacturers: Subaru, Honda, Briggs & Stratton.

Description

Neva walk-behind tractors and walk-behind cultivators are produced by the leader in mechanical engineering, JSC Krasny Oktyabr-Neva. The modern enterprise is distinguished by high-tech production, innovative developments, and the use of components from well-known manufacturers.

These components make it possible to create reliable, high-quality equipment, which in terms of technical characteristics and functionality is not inferior to the best world models.

Motor cultivator Neva MK-100

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Advantages and disadvantages of Neva motor cultivators

The advantage of the entire model range of Neva motor cultivators is excellent quality characteristics at an economical price. In addition, you should indicate:

Motor cultivator Neva MK-100

• versatility of motor cultivators;
• structural simplicity;
• variability of functionality and the ability to ensure the operation of mounted and trailed equipment;
• increased engine life, and, consequently, increased productivity;
• ability to maneuver motor cultivators by adjusting the steering wheel and disconnecting the drive shaft.

Disadvantages when working with a Neva brand motor cultivator:

• large size of equipment;
• minimum average tillage depth - this is caused by the lightweight design, and can be corrected by hanging an additional load of 25 kg on the front pin of the unit;
• average stability of the equipment in conditions of unleveled ground, which can be corrected if you replace the factory wheels.

Purpose

Motoblocks "Neva" have earned a good reputation due to their reliability and unpretentiousness. This brand currently produces five types of walk-behind tractors with different operational capabilities.

Each of these models is capable of working with a wide range of attachments: a mower, a hay and straw rake, a root crop digger, brushes, a shovel, a snow blower.

What is he capable of?

• plowing and cultivation (plough and cutters);
• hilling and cutting furrows;
• pumping water and watering crops;
• mowing grass;
• planting and digging potatoes root crops;
• cleaning areas in summer and winter;
• transportation of goods.

Using a walk-behind tractor can significantly reduce labor costs and save time. The amount of work that is done manually in several days of hard work, he will master in a few hours.

The “element” of the Neva walk-behind tractors are small peasant farms; large gardens and garden plots. It makes sense to use this motorized equipment to provide services for cultivating fields and vegetable gardens and making hay. Since they demonstrate low fuel consumption, reliable and trouble-free operation for a long time, they pay for themselves quite quickly. Learning to operate a walk-behind tractor is very simple. Since its weight is about or more than one hundred kg (depending on the model), any physically strong man can master working with it.

Walk-behind tractor series

Today the company offers a huge number of models of walk-behind tractors, the main difference of which is the type of engine used.

There are several main model ranges of walk-behind tractors:

• MB-1 - walk-behind tractors of this class belong to the medium type, are distinguished by their compactness and small dimensions and are the first to be produced by the company;
• MB-2K - this series is equipped with an engine from a domestic manufacturer, is characterized by low cost and long service life;
• MB-2 - belongs to the medium type of walk-behind tractor; the first representative of this series was released back in the 1980s;
• MB-23 - heavy and powerful units for agricultural work. Models in the series differ in their size, engine, speed and weight.

Options

At the moment, the most popular model is MB-2 due to its optimal price/quality ratio.

It is obvious that Red October relied not on the constant expansion of the line of equipment, but on fine-tuning the existing ones. New models of Neva walk-behind tractors appear very rarely; the last time this happened was more than 10 years ago with the start of sales of the diesel version.

However, the units are constantly being refined, with minor improvements and additions to the design appearing. Such work is always noticeable to the consumer and works better than any marketing or sales department.

comparison table

There is no practical sense in the headlight: theoretically, it may be needed for work at night, but it is a rather weak lamp, which is more convenient to replace with a powerful LED one with its own battery.

As for the button starter, according to reviews from users of the Neva walk-behind tractor, given the overpayment that is asked for it in the store, from a price/quality point of view, a regular starter is better. Moreover, the new models have no problems with starting.

Gearbox, faults, device

The gearbox is designed to transmit rotation that comes from the engine to the wheels and attachments. It regulates the speed and direction of movement.

Gearbox device

The gearbox is designed in such a way that to regulate its operation there is no need to disassemble the entire mechanism. All regulators are located on the outside.

The gearbox has 5 positions. When you press the lever, the clutch is disengaged; when it is released, it returns to its place.

If the drive is connected to the right axle shaft, then at this moment of switching the walk-behind tractor stops. When the handle is recessed, the left sprocket catches and the gear shifts down. If it is necessary to increase the gear, the handle moves forward.

Major gearbox failures

• The clamps or springs have failed. In this case, they should be replaced with new ones;
• The settings of the gearbox itself have gone wrong. Loosen the screws, set the first gear, and tighten it back;
• Oil appears on the shaft. The main reason for this behavior is the failure of the cuff. It needs to be replaced with a new one. It is also recommended to replace the seals. To do this, just pry off the old ones, pull them out and install new ones;
• The transmission is jammed. There's a problem with the chain. It should be inspected and, if its integrity is damaged, replaced with new ones;
• The transfer is not recorded. Most likely the fork is worn out. It cannot be repaired, only replaced with a new one.
• Grinding noise in the gearbox. Most often it occurs with increased loads on the walk-behind tractor. This indicates that the gearbox axle shaft has failed, or the drive belt tension needs to be changed.

Disassembly and repair of the gearbox

Brief video review of the Neva walk-behind tractor gearbox: design, disassembly, repair

Overview of modifications

Now let’s look at the indicators shown in the table above in more detail.

MB-Compact

The simplest model is considered a light-class walk-behind tractor (weight 70 kg).
Compact, designed for cultivating medium-difficult soils, mowing, and various chores. Equipped with a Briggs&Stratton engine with a volume of 205 cc and a power of 6 hp. The fuel tank holds 3 liters of gasoline. Number of gears: 4 forward and 2 reverse.

The gear-chain, oil-filled gearbox is housed in an aluminum housing. The walk-behind tractor cultivates the soil to a depth of 16 cm, with a cultivation width of 65 to 100 cm. The speed of the cutters ranges from 28 to 120 rpm.

This walk-behind tractor is the most compact for transportation and storage; wheels can be easily and quickly changed to cutters by one person; The workload on the operator is minimal.

MB-1

The modification is equipped with the same 6-horsepower 205 cc compact Briggs & Stratton engine. It differs from the MB-Compact model in transmission.

The MB-1 is equipped with a Multi-Agro gearbox with increased traction capabilities. It allows, in general, to achieve greater productivity with less power.

In addition, this walk-behind tractor is equipped with a system of independent separation of the left and right wheels, patented in the Russian Federation. The torque of the wheels can be turned off separately, increasing the maneuverability of the walk-behind tractor when turning. “MB-1” produces deeper tillage, up to 20 cm, the cultivation width ranges from 86 to 127 cm. The cutter speed is from 25 to 125 rpm.

The MB-1 walk-behind tractor can also be equipped with a headlight and an electric starter. The total weight of the agricultural machine is 75 kg.

MB-2

This model is equipped with a 208 cc Briggs&Stratton engine. cm and power 6.5 hp. The gear-chain reducer has an additional range of low gears.

It makes sense to use the “MB-2” modification on light soils with eight cutters. This makes it possible to cover more area in one go, speeding up the process of cultivating the land. On clayey and wet heavy soils, it is wiser to install no more than 6 cutters, 3 on each side.

There is also an independent wheel release system, but there is no push-button starter or headlight.

The weight of this walk-behind tractor is 100 kg. It provides cultivation widths from 86 to 170 cm; cutter speed indicators - from 20 to 160 rpm; cultivates the soil to a depth of 20 cm.

MB-23

This modification is equipped with a more powerful 10-horsepower Briggs&Stratton engine and is designed for more serious loads. This walk-behind tractor, unlike the previous three models, is capable of cultivating virgin soil (i.e., not yet arable land) and heavy, compacted soils over fairly large areas.

Recently it began to be equipped with a Japanese Honda engine with 9 hp.

“MB-23” weighs 105 kg, cultivates the soil to a depth of 20 centimeters. With cultivation widths from 86 to 170 cm, producing from 20 to 160 rpm of cutters.

The transmission of the walk-behind tractor also consists of an oil-filled gear-chain reducer with 4 forward and 2 reverse gears in an aluminum housing. Turns, U-turns and other maneuvers are facilitated by an independent wheel release system.

The MB-23 walk-behind tractor is very powerful and is able to work stably on heavy soils even with eight cutters, increasing the width of simultaneous cultivation to 172 cm.

MB-23SD

The only modification of the Neva walk-behind tractor with a diesel engine. This model is equipped with a Japanese-made Subaru engine. This compact and economical diesel engine has a high service life and high torque.

Equipped with an oil pump. The MB-23SD walk-behind tractor is designed to perform lengthy and labor-intensive work on large areas and compacted soils. The walk-behind tractor cultivates any type of soil to a depth of 20 cm.

The special feature of this diesel engine is:

Applicable cutter speed indicators are from 20 to 160 rpm. The weight of this walk-behind tractor is 115 kg.

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How to start a Neva walk-behind tractor with a Subaru engine

If we consider the market for walk-behind tractors in our country, the Neva brand is considered one of the most popular and best-selling, represented by an abundance of models of different power and features. What remains for our client to do is to equip Neva walk-behind tractors with high-quality attachments, and the main unit of the device is considered to be an engine from a foreign company. This allows you to operate the walk-behind tractor in different conditions without fear of breakdown or frequent engine stoppage.

One of the best engines used for walk-behind tractors is the engine of the famous Japanese company Subaru. The Subaru brand is known throughout the world; it mainly produces cars and various engines for vehicles. The history of the company is very long and dates back to 1917. During this period, engineers have significantly improved the range of products, introducing the best motors for walk-behind tractors. What remains for our client to do? Neva models have been created for more than 50 years; recently, the manufacturer has been using spare parts and components from foreign manufacturers. This decision presented the buyer with both advantages and disadvantages. If you choose a Neva walk-behind tractor, the Subaru engine is 6.5 hp. has a slightly higher price than motors from a Russian manufacturer. However, the slightly higher cost is a completely insignificant minus due to the efficient operation of the motor and the ability to cultivate different areas of land. The Japanese engine is the solution to all issues for good reliability and modern technology.

The walk-behind tractor is considered an impeccable representative of agricultural machinery and belongs to the MB-2 series. It is equipped with a single-axle system and a 5 by 2.4 wheel formula; with additional equipment, the walk-behind tractor can cultivate a large volume of land. The average properties of the motor and the small weight of the walk-behind tractor allow it to be classified as middle class. The walk-behind tractor is best suited for:

The main differences between a cultivator and a walk-behind tractor

The plant produces cultivators and walk-behind tractors. I would like to determine the difference between this technique specifically using the Neva brand as an example. The main purpose of cultivators is to work with the soil. Using an additional take-off shaft, the walk-behind tractor can perform work with mounted implements - removing snow, raking hay and performing other operations where it is necessary to take engine power to the additional shaft.

The walk-behind tractor is stronger in terms of power, it has a gear reducer, and a larger processing area. Cultivators are smaller, use worm and chain gears, are medium to light in weight, and cover smaller areas.

Another important point is that the modern Neva cultivator with a Subaru engine can do a lot if you use the appropriate attachments. For a summer resident, a cultivator is considered a convenient tool. Rural residents add a seat, a trolley, and attachments to the walk-behind tractor, and it is in use all year round. When choosing between a walk-behind tractor and a cultivator, you need to know these differences so that the tool lives up to your expectations.

The Neva cultivator enjoys a good reputation; supposedly models from the same manufacturer began to appear, but under different names. The company warns that they produce their cultivators only under the Neva brand.

Neva cultivators are considered professional equipment. The equipment is distinguished by the place of production - only its own production using a Subaru, Honda or Briggs engine. The models are adapted for use in addition to milling cutters and other tools for tillage. But the cultivators are equipped with only cutters. Additional tools – hiller, weeder must be purchased separately. The most powerful cultivator Neva MK 200 uses attachments that are already comparable to a walk-behind tractor. Power unit with a power output of 6 hp. With. allows you to increase the load, and the design of the canopies has been modernized.

Purchase

We will not list dozens of online stores that resell equipment - they are located on the Internet. Here we will talk about buying directly from the manufacturer.

Saint Petersburg

The manufacturer has its own official store of Neva walk-behind tractors in St. Petersburg at the address: Politekhnicheskaya st., 13-15 A. The opening hours of the trading floor are Mon-Fri from 10 to 19 (until 2012 there was lunch from 13 to 14, now it is not, so do not believe outdated information). On Saturdays the doors are open until 16.00, and Sundays are closed. Current phone numbers: + 7 (812) 297-77-11, +

Here (even during the hot season) you can buy almost all configurations of walk-behind tractors (especially the PRO series - these are always in stock). Most of the attachments are also on sale. But the most important thing is that the company store employs consultants who understand what they are selling and will be able to advise you.

Photo of the sales area in St. Petersburg.

The service center at the sales floor is essentially the only place where you can purchase almost any spare part and consumables for the Neva walk-behind tractor (gas tanks, gaskets, bushings, etc.)

Moscow

In Moscow, the official dealer of Tekhnoservice CJSC is located at Entuziastov Proezd 15 . There is also a warranty workshop here. However, in order to get to him, you need to order a pass one day in advance by calling +7 (495) 788-85-03.

Service

Motor cultivators of any model range and modification require timely oil changes and high-quality fuel.

• The fuel for Neva motor cultivators is high-quality gasoline AI92 or AI95.
• Gearbox oil: gear oil, universal, SAE85W-90 API GL-5.
• Engine oil: SAE 10W-30 or similar properties. Manufacturer - any, the main thing is the degree of purification and compliance with the classification standard.

Machine oil SAE 10W30

The maintenance schedule for motor cultivators is standard: after a break-in period of the first 5-20 hours of operation, the unit should be inspected every 100, 200, 500, 1000 or more hours. With the change of season, provided that the cultivator is used year-round, you should change the engine oil, monitor the oil level in the gearbox, clean or replace the oil and fuel filter.

Complex work, such as disassembling and assembling an engine, in the absence of personal skills, is best left to professionals.

Replacing belts on Neva cultivators is done manually. To do this, you need to remove the protective housing by unscrewing the bolts, then remove the old belt and put on a new one. After installing the replacement, it is extremely important to check the alignment of the pulleys, that is, the consistency of their rotation, due to which the belts are tensioned and move forward or backward. If the alignment is disturbed, the belts will quickly break.

Technical capabilities of the Neva-Mini cultivator

The gasoline cultivator is most in demand at dachas. The tool will even lift virgin soil, but is easy to operate, which allows even an elderly person to work with them. Mini-cultivators are a separate range of machines with low productivity.

The Neva Mini cultivator is a separate class of machines equipped with a Subaru engine with a shaft power of 4.5 liters. With. The unit is designed for deep cultivation of soils of varying densities.

But this particular cultivator is the quietest. This is facilitated by the overhead valve engine design of the Robin-Subaru EX-13. The remaining components are used the same as on the more powerful MK-200. The mini-mechanism can be easily upgraded by craftsmen to a walk-behind tractor, and canopies for the MB-2 are suitable for it.

Without changing the structural elements, in its original configuration, it performs the following operations:

• cultivating the land with a plow;
• digging up potatoes;
• carries a single-row or double-row hiller;
• can work with a disc harrow.

Technical data of the “baby”:

• width of the processed strip – 96 cm;
• number of speeds – 2 without reverse;
• the steering column is adjustable in 2 positions;
• processing depth - 30 cm;
• clutch – belt;
• drive – chain:
• three-speed transmission, oil gear-chain reducer;
• weight – 55 kg.

Review of the model range of Neva walk-behind tractors

The variety of models of Neva motor-cultivators and walk-behind tractors provides for the mechanization of all agricultural work, taking into account the climatic location of Russia. This allows you to cultivate the soil, thresh feed, make hay, remove garbage or snow, etc.

Types of Neva walk-
behind tractors Models with dimensions of 174/130/65 cm, designed for cultivating areas of less than 20 acres, are trusted. The main parameters are shown in the table:

Motoblock 2K

The Neva walk-behind tractor in its basic configuration runs on A-92 gasoline. On board is a motor developed by the Russian manufacturer DM-1K. A cast-iron cylinder liner, as well as forced cooling, significantly extends engine life.

Special bearings in the crankshaft supports provide good stability to the equipment. The model involves the addition of attachments for hilling, weeding, planting, plowing, cargo transportation, as well as for garbage collection.

Motoblock MB-2K

Motor cultivator 2B

The engine is four-stroke, single-cylinder, made in Japan or the USA. Based on several modifications, it is started by a manual kickstarter. Air cooling is forced.

The Neva MB-2B walk-behind tractor is adapted for significant loads on soils of any composition and virgin soil. The basic kit includes: axle extensions, a 4-section soil cutter, rubber wheels.

Attachments for the Neva MB-2B walk-behind tractor

Motor cultivator 2Z

This model is intended for frequent use in gardens and virgin lands. Provides a clutch for attaching any possible attachment.

There is a basic modification and an option with the addition of a headlight and electric starter. Four-stroke engines from Subaru, Honda, Briggs & Stratton vary.

Motoblock 2N

This Neva walk-behind tractor is easy to operate and maintain. Features provided:

• feed crushing;
• milling;
• mowing;
• loosening;
• pumping water;
• snow removal;
• transportation of mass up to 0.4 tons.

Equipped with a four-stroke Honda engine, cast iron liner and air cooling system.

Motoblock Neva 2N

Motoblock 2C

This type is equipped with a Japanese engine with overhead valves. MB-2S is lightweight, the package includes:

• vomer;
• pneumatic wheels 4.5*10 inches;
• 4-section soil cutters;
• fuel tank – 2.8 l, which ensures uninterrupted operation for two hours;
• multi-speed gearbox (4 front, 2 rear);
• reverse;
• the ability to disable the wheel for better agility.

TOP-best NEVA walk-behind tractors

The popularity of NEVA walk-behind tractors is due to their good quality; the manufacturer took a responsible approach to the matter, equipping the models with Japanese, American and Russian engines. You can install any attachment on the equipment - a plow, hiller, weeder-ripper, cultivator, potato planter or potato digger, snow blower, various cleaning brushes, a cart and much more. All this expands the range of tasks that can be easily handled by the same walk-behind tractor.

It is also worth noting the design advantages of NEVA devices:

• A wide range of gear-chain gears housed in an aluminum housing;
• High traction force achieved through a transmission close to that of a car;
• Convenient location of all controls, allowing you to operate the unit without special skills.

NEVA walk-behind tractors are equipped with Briggs&Stratton, Yamaha, Zongshen, Honda, Kasei, Subaru engines or domestic engines of our own brand MOTOTEHNIKA NEVA.

Neva MB-23B-10.0 10.06 hp

A powerful and heavy walk-behind tractor processes all types of soil; it can easily tidy up an area heavily overgrown with weeds or plow uncultivated land. Design features and components from renowned manufacturers allow you to operate the equipment in any, even the most difficult conditions, regardless of the time of year. The gearbox of the walk-behind tractor is made of aluminum alloy, which provides better heat dissipation and increased service life compared to metal cases. The high-torque Briggs & Stratton engine consumes clean fuel and is unpretentious, and the ability to unlock the wheels significantly increases the maneuverability of the walk-behind tractor. According to owner reviews, this popular model is great for farms and even commercial use.

Advantages:

• there is a reduction range of gears;
• good quality materials;
• high motor power;
• compatibility with a variety of additional equipment;
• maneuverability;
• Track wideners are standard.

Flaws:

• due to the large mass, it is difficult to replace wheels with cutters;
• short and tight gear shift lever.

Neva MB-2B-6.5 RS 6.53 hp

One of the best walk-behind tractors from NEVA is equipped with a high-tech engine from Briggs&Stratton, a professional Vanguard series. Its advantages include an increased service life, easy starting in any weather, thanks to the CDI ignition system. And also in the nickel-plated coating of the piston and cylinder wall, which protects them when using low-quality fuel. This reliable motor is paired with one of the manufacturer’s most famous proprietary developments - the MultiAGRO multi-speed gearbox, which ensures optimal movement speed when carrying out any work. According to the owners' reviews, this equipment and wide functionality make this walk-behind tractor the best in price-quality combination.

Advantages:

• powerful and unpretentious engine;
• shifting gears on the steering wheel;
• low gears;
• gearbox "MultiAGRO";
• large selection of attachments;
• affordable price.

Flaws:

• Scheduled oil changes are difficult;
• strong vibration under load.

Neva MB2-B MultiAgro (Vanguard 6.5) PRO 6.53 hp

A high-quality walk-behind tractor is distinguished by its versatility, ease of operation and comfort in operation. A large selection of additional equipment allows you to use it to loosen and plow the soil, plant and harvest potatoes, transport cargo and even remove snow. A powerful engine connected to a gear-chain reducer produces a traction force of 300 KGS - sufficient to easily perform the entire range of agricultural work. The gear shift occurs smoothly, without jerking, and the lever itself, located on the steering wheel, greatly simplifies the choice of the optimal speed. According to reviews, this model is excellent for a summer residence, farming, and even use in public utilities.

Advantages:

• eight-speed gearbox;
• 4-stroke Vanguard professional series engine;
• high reliability;
• low fuel consumption;
• durability of components;
• convenient gear shifting.

Flaws:

• difficult change of equipment due to the large mass.

Neva MB2-Y (MX175) PRO 6 hp.

The popular model, which appeared in 1990, is still one of the market leaders. The secret of this success lies in the highest quality of all components of the walk-behind tractor, in particular the high-resource Japanese Yamaha MX 175 engine, as well as an excellent combination of characteristics and weight. In addition, the manufacturer constantly made design changes, updating the walk-behind tractor to modern levels of comfort and safety. As a result, the consumer is presented with a time-tested, technological model of a walk-behind tractor that meets the highest requirements.

Advantages:

• engine life 3000 hours;
• separate adjustment of the steering handles;
• high traction capacity;
• quality of cultivation;
• large fuel tank;
• good maneuverability.

Flaws:

• demands on the quality of oil and fuel.

Neva MB-2KS-(168FA) 6.5 hp.

The lightweight model is also the most inexpensive in the line, and has received a number of updates and improvements that have a positive impact on its performance. First of all, the manufacturer has eliminated the problems with gear shifting typical of walk-behind tractors - now they shift smoothly and clearly, and also increased the rigidity of the steering column. In addition, the platform connecting the frame and the engine, which causes unnecessary vibrations, was excluded from the design. The main thing is that reliability and functionality have remained at a consistently high level, meeting modern requirements. According to the owners, this is a very good NEVA walk-behind tractor, which has absorbed all the best from other models.

Advantages:

• low cost;
• rigid structure;
• easy start;
• good traction in all speed ranges;
• reduced noise and vibration levels.

Flaws:

• no axle unlocking.

Neva MB2-Y (MX200) 6.5 hp.

There are no negative reviews about the MB2-Y model, which made it possible to include it in the rating of the best. The walk-behind tractor is not new; it has been on sale for more than 10 years. Owners note the reliability of the Yamaha engine, good traction and noticeable fuel efficiency. A high-quality walk-behind tractor is multifunctional; it can be used to plow, remove snow, transport a loaded cart, dig, hill, plant and harvest potatoes, and mow grass. The powerful high-torque engine allows you to easily cope with any tasks, even on difficult, clay soil, as well as in difficult places inaccessible to the tractor. Rearranging the belt on the pulleys allows you to control the walk-behind tractor in higher gears, which will allow you to transport loads faster and use the unit more efficiently.

Advantages:

• spacious 3.9 liter fuel tank;
• a set of overdrive gears available;
• multifunctionality - suitable for most types of agricultural work;
• long engine life;
• increased maneuverability.

Neva MB-23SD-27 5.44 hp

The medium power model is designed for particularly labor-intensive work and is designed for continuous loads. The equipment is equipped with a Japanese Robin-Subaru DY27-2D diesel engine with one cylinder, an oil pump and increased service life. The unit is capable of reaching high speeds of up to 16 km/h and, thanks to its high torque, moving at a low speed of 2 km/h. This allows you to efficiently perform resource-intensive operations without overloading the walk-behind tractor. According to owner reviews, a diesel walk-behind tractor is best suited for cleaning and transporting various loads, as well as for cultivating difficult and hard soil.

Advantages:

• low “ploughing” speed is applicable;
• reliable Japanese engine;
• cultivation depth up to 32 cm;
• 4 speeds forward, 2 reverse and reverse.

Flaws:

• difficult to find on sale.

Technical characteristics of the Neva MB-2 walk-behind tractor

1. Travel speed at maximum power:
   in first gear - 1.8 km/h;
2. on the second - 6.1 km/h;
3. reverse speed - 1.4 km/h.
4. Movement speed when rearranging the V-belt drive belt:
   in first gear - 3.3 km/h;
5. on the second - 12 km/h;
6. reverse speed - 2.5 km/h.
7. Transport track:
   without axle extensions - 320 mm;
8. with axle extensions - 565 mm.
9. Turning radius - 1.1 m.
10. Ground clearance - 145 mm.
11. Operating temperature - -5...+35°С.
12. The ignition system is electronic non-contact.
13. The spark plug for the ignition coil is A-11-1, A-17B.
14. Starting system: manual starter with pull cord.
15. The running system is wheels in a 2x2 pattern.
16. Tires - 4x10 model F-106.
17. Tire pressure is 1.8-2 kg/cm³.

Operating characteristics of the tillage unit:

• number of cutters - up to 8;
• cutter diameter - 36 cm;
• processing depth - 20-32 cm;
• maximum working width - 120 cm;
• processing speed - up to 0.12 ha/h.

Carburetor

The float-type carburetor of the Neva KMB-5 walk-behind tractor ensures the preparation of the air-fuel mixture, has a vertical mixing chamber arrangement, and is attached with 2 screws to the pipe through gaskets and bolts to the board. Fuel from a fuel tank with a volume of 3.6 liters, when the tap is open, flows by gravity into the device through the connecting hose and fitting, then through the fuel valve into the float chamber, is sprayed, mixed with air in the mixing chamber and approaches the combustion chamber of the cylinder block.

If there is a problem in the power system, adjust the carburetor by turning the screw 1 and 3/4 turns.

Fuel consumption

Fuel consumption for a walk-behind tractor is 1-1.6 l/h.

Dimensions

Overall dimensions of equipment:

1. Length - 1640 mm;
2. Width:
   without axle extensions - 600 mm;
3. with extensions - 850 mm;
4. with cultivator - 600 mm.
5. Height with wheels - 1200 mm.

Features of the internal combustion engine

Neva modifications are equipped as follows:

1. Neva MB-2K is equipped with a domestic DM-1K engine with a long service life and low price.
2. Neva MB-2B with an American Briggs&Stratton engine of varying power and performance.
3. Neva MB-2S with professional Japanese installations Robin Subaru or Honda.

The engine on the Neva walk-behind tractor is a 4-stroke, 1-cylinder carburetor with manual start from the starter and air cooling. To transmit rotation to the gearbox or attachment mechanism, a three-groove pulley is used. The operation of the motor is regulated using an air damper.

The devices have an overhead valve arrangement, a horizontal crankshaft position and high torque.

They are characterized by the following features:

• hull strength;
• modernized air purification system;
• manufacturing a crankshaft from forged steel and installing it on bearings on 2 sides;
• presence of electronic ignition;
• production of sleeves from durable cast iron;
• installation of special channels for cooling in the block and head;
• use of metal parts instead of plastic;
• quick start due to a large bobbin in the starter and reduced compression;
• small size and weight.

The most popular are American Briggs & Stratton units. They are characterized by durability, wear resistance and great power. The main disadvantage of engines is their high cost.

Gearbox

The gearbox for the Neva MB-2 walk-behind tractor is a gear-chain device designed to change the rotation speed of the output shaft or cultivators and transmit rotational motion from the driven pulley to the wheels of the walk-behind tractor, changing the speed and direction of movement.

Its performance is ensured by the presence of oil fluid in the housing. Parts are lubricated by spraying oil during disassembly.

The kinematic diagram of the device is simple: a chain and 2 sprockets - upper and lower. The lower, or driven, sprocket is located on the working shaft, due to which the system starts to move. The gear ratio increases the force on the cutters and ensures maximum penetration into the ground.

The transmission serves as a transmitter of energy from the engine to the wheels.

Engine Features

The engines that power Neva walk-behind tractors are made in Russia, the USA or Japan. Russian DM-1K is a carburetor, four-stroke with 1 cylinder in a vertical position, forced air cooling and a valve timing mechanism.

Specifications:

• Cylinder capacity – 317 cubic meters. cm.
• Power – 6.2 l. With.
• Fuel volume – 3 l.
• Rotation speed – 1.2 thousand revolutions per minute.

Engine DM-1K

The second category of professional-class motors is from Briggs & Stratton. Power – 7.5 l. Often included in motorized equipment due to:

• larger Lo-Tone muffler;
• mechanical speed controller;
• high-strength crankshaft;
• Dual-Clean double air filter;
• cast iron cylinder liner.

These characteristics provide Neva walk-behind tractors and walk-behind cultivators with Briggs&Stratton engines with a high level of performance and endurance.

Briggs & Stratton engine

Carburetor, malfunctions, adjustment

Below is an algorithm for setting up a carburetor on a Neva walk-behind tractor with a Subaru engine.

The diagram shows three screws that are responsible for the amount of fuel supplied.

1. Screw 1 - number of full throttle revolutions;
2. Screw 2 - number of idle speeds;
3. Screw 3 - responsible for idling.

To adjust the carburetor, you must perform the following manipulations:

• Tighten screws 1 and 2 until they stop;
• Then unscrew them about 1 turn;
• Turn on the ignition and warm up the engine;
• Then place the throttle control lever until the engine is turned off (that is, until the speed is at a minimum level);
• Set the minimum idle speed level with the third screw;
• Then set the maximum idle speed with the second screw;
• If necessary, adjust the minimum speed again by adjusting the position of the third screw;
• Carry out the last two steps until stable engine operation is obtained;
• If there are interruptions, tighten the first screw again until it stops and unscrew it one and a half turns.

Review and comparison with competitors: Neva or Husqvarna?

This question can often be seen on forums and in discussions of technology. Some owners strongly defend the Russian brand, others no less categorically describe the advantages of Swedish technology. But what really?

Without any bias, we will present all the pros and cons.

A brief overview of the advantages of the Neva:

• available service, consumables and spare parts
• reliable engines
• budget price
• advanced functionality.

Brief description of the advantages of Husqvarna:

• perpetual gearbox that does not require adding oil
• folding handle and carrying handles for light versions
• shields on rototillers.

Review of the Neva's shortcomings:

Small depth of soil cultivation - the problem is easily solved by installing additional weights.