Motoblock Neva MB-23S Pro 9.0 hp. with Subaru EX27 engine

Neva MB-2S Pro is a Russian walk-behind tractor, made mostly from imported components. Thanks to this, the equipment is in no way inferior to foreign analogues, and at the same time costs much less due to domestic production, although imported spare parts are still supplied from abroad. The walk-behind tractor has excellent off-road potential and when cultivating heavy soil. Support for a large number of attachments makes the equipment suitable for performing a wide range of tasks in the gardening sector. The car is also in demand among utility services.

General information, purpose and design features

The walk-behind tractor of the same name has several modifications. In our case, we will talk about the configuration, which is available with two power plants to choose from - from Subaru and Honda. Both modifications are almost the same in power and characteristics.

The walk-behind tractor has a standard layout. Among the integral parts of the machine design, let us pay attention to the mechanical gearbox, made in an aluminum housing. The gearbox is oil-filled, gear-chain type. Its components have lubrication systems by spraying oil. To rotate the gears, plain bearings or ball bearings are used.

In any modification, the walk-behind tractor is equipped with a three-speed gearbox with two forward and one rear speeds. The number of gears can be doubled (a total of six speeds) by rearranging the drive belt on the driven and driving pulleys.

As for the clutch, its design includes a tension roller, a V-belt, and a control lever (located on the steering wheel). The force on the lever is controlled by a special roller, which creates tension on the drive belt at a certain level.

Motoblocks Neva MB23-N9.0 PRO

MB23-H9.0 PRO

The Neva walk-behind tractor MB23-H9.0 PRO is an agricultural machinery that belongs to the class of heavy, powerful units designed for cultivating soils with a high clay content, as well as for cultivating virgin lands.

The main advantages of this walk-behind tractor model are:

• Briggs&Stratton gasoline engine with a power of 9.0 hp;
• high torque of the gearbox;
• quick and simple procedure for turning the machine;
• maximum width of the land track during processing.

Description

Motoblock "Neva" MB23-H9.0 PRO

The engine of the Neva walk-behind tractor MB23-H9.0 PRO has high performance. It is characterized by quick start-up and reduced oil consumption. These technical parameters allow the walk-behind tractor not to change the intensity of work for a long time, ensuring uniform results when processing even the most difficult soil.

Transmission type of the Neva MB23-H9.0 PRO walk-behind tractor: gear-chain, the gearbox is protected by a housing made of aluminum. A double-groove pulley allows you to double the gear range, while the walk-behind tractor initially has 2 forward gears and 1 reverse gear. For different types of soil, you can select the required speed on the walk-behind tractor.

The wheel disengagement function (disabling the left wheel) allows you to turn the walk-behind tractor directly on the surface being processed. The maximum tillage width for the Neva MB23-H9.0 PRO is 170 cm. This tillage width is achieved by installing 8 cutters.

The key purpose of the Neva MB23-H9.0 PRO walk-behind tractor: cultivation of soil of any type and level of cultivation (including virgin soil). With the help of attachments, the unit can perform the function of a mower, hay collector, and it is also possible to perform harvesting work, work on transporting goods and watering the territory.

Attachments for the Neva walk-behind tractor MB23-H9.0 PRO

Characteristics

Equipment

Let's look at the standard equipment of the Neva MB 23C Pro 9.0 walk-behind tractor:

• Pneumatic wheels - necessary for moving the walk-behind tractor off-road. They can be used together with additional equipment that are installed on the wheels themselves.
• Cutters – a minimal set of cutters allows you to connect a basic set of attachments
• Hitch – a means for connecting a trailer and other additional options
• Limiter – designed to adjust the depth of cultivation to a certain amount. This option is mounted at the rear of the walk-behind tractor, and its location depends on the height of the soil being processed.

As you can see, even with the standard kit, the Neva MB-23S Pro 9.0 walk-behind tractor is a completely functional unit. But the capabilities of the machine can be expanded even more, and for this you will have to purchase various options. However, this is what real professionals and masters of their craft do.

Attachments

Please note that each option has its own purpose and therefore may vary in price depending on the complexity of the design. Let's look at the most common options for Neva MB-23S Pro 9.0:

• The plow provides gentle and high-quality cultivation of the land, and preserves its fertile properties and microorganisms. The device allows you to plow even heavy soil, even virgin soil. Unlike a cultivator, a walk-behind tractor cannot increase soil density.
• A milling cutter is the most popular equipment, indispensable when working with large areas and various tasks. In addition to the basic cutters, additional cutters significantly increase the capabilities of the walk-behind tractor by installing even more attachments. Milling cutters also allow you to set the width and other soil processing parameters. The depth of processing depends on the diameter of the cutters, which allows you to work both with small areas and flower beds, and with large beds. The manufacturer does not recommend using cultivation cutters in areas with a large number of weeds. Otherwise, you can provoke their accelerated growth.
• A potato digger is a very common element among Russian business owners. They can be used to dig up root crops and other vegetables. Its operating principle is simple: the device digs up and lifts soil with potatoes, then the soil crumbles, leaving the potatoes behind.
• A potato planter is a tool for planting potatoes in the soil, which must first be thoroughly cultivated. In addition, using a potato planter, you can seal the soil or form a soil ridge. Planting tubers using this equipment has become a very simple task. In addition, the option can be adjusted depending on the required distance between planted tubers.
• Mower - can be rotary or blade type. It is recommended to use a rotary mower - it is more productive, but less maneuverable. A blade mower is used for cutting grass and bushes.
• Hiller - allows you to sow various crops, including cabbage and beets. In addition, you can cut furrows and hill up root crops.

In addition to the above equipment, the Neva MB-23S Pro 9.0 walk-behind tractor can be equipped with ground hooks, a transport cart, a weighting agent, a blade shovel and a front rake. These options can be combined with a rotary mower, brush, water pump and snow blower. Please note that the recommended attachments for this walk-behind tractor are Kadvi and Mobil K.

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.

Run-in

Before full use, the Neva MB-23S Pro 9.0, like any other walk-behind tractor, undergoes a run-in, which lasts 15-20 hours. This procedure is intended mainly to check the functionality of the main elements of the motor. During running-in, the weight of the transported cargo should not exceed 200 kg. In general, the maximum load on the walk-behind tractor in this case is up to 50% of the limit value specified in the user manual.

During running-in, it is recommended to cultivate with four cutters. Also, do not forget that it is prohibited to overload the walk-behind tractor, especially when cultivating rocky and other heavy types of soil.

In addition, it is necessary to regularly check the oil and gasoline levels and add fluid if necessary. The manufacturer recommends using TEP-15 oil, which is resistant to temperatures from – (minus) 5 to +35 degrees, as well as TM-5 from – (minus) 25 to – 5 degrees. The oil tank capacity is 2.2 liters.

After checking the technical condition and replacing consumables, the run-in is considered complete, and the next day you can proceed to full operation of the product.

Features of operation

The Neva cultivator is easy to operate and does not require any special technical knowledge. It is enough to study the factory operating instructions and strictly follow its recommendations. The unit consumes AI-92, AI-95 gasoline and SAE 10W-30 motor oil. SAE 85W-90 oil is used for the transmission.

Machine oil SAE 10W30 Oil SAE 85W-90

Possible malfunctions, repairs

As the experience of equipment owners testifies, the first breakdowns and malfunctions often appear as a result of inept handling of equipment, incorrect gear shifting, and the use of low-quality oil and fuel. Therefore, the manufacturer strongly recommends strictly following the instructions and avoiding annoying mistakes when operating the cultivator, running in the unit, and replacing consumables.

Characteristics and engine

Let's consider the performance characteristics of the walk-behind tractor - the processing depth reaches 300 mm, the processing width is in the range of 600-1200 mm. The basic kit includes four cutters with a diameter of 3600 mm each. The weight of the entire structure (motoblock) is 105 kg. The Neva MB-23S Pro 9.0 walk-behind tractor in the pre-restyling version was equipped only with American engines, and after the update they were replaced with Japanese units from Subaru and Honda. They fit perfectly with the domestic gearbox. It is also worth noting the excellent build quality of all important components. All details are adapted to Russian conditions. The maximum soil cultivation area for which the walk-behind tractor is designed is in the range of 50-100 acres.

Engine parameters EX27 9.0 Robin Subaru:

The working volume is 0.2 liters, the number of cylinders is 1, the power is 9 horsepower. The engine is 4-stroke, air-cooled. There is support for AI-92 and AI-95 fuels.

GX270 9.0 Honda engine parameters:

Displacement is 0.3 liters, power is 9 horsepower, torque is 195 N/m, number of cylinders is 1. The engine is four-stroke, air-cooled. Supports AI-92 and AI-95 gasoline.

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.

Prices in Russia

Neva MB-23S Pro 9.0 is a popular walk-behind tractor that successfully competes with foreign analogues, despite its rather high price. Thus, the price of a new car in the basic configuration is in the range of 54-60 thousand rubles. On the secondary market, prices fluctuate around 30-35 thousand rubles. Additional attachments increase the cost by 10-15 thousand rubles.

The closest analogues of the considered model include the Ugra NMB-1N15, Patriot Boston-9DE and DDE V 900 II walk-behind tractors.

Owner reviews

• Alexey, Smolensk. The car was purchased two years ago. It is still practically new, judging by its condition. The technology has been developed to last - you can feel the Soviet school, although the engines are Japanese, but judging by this, this is also a plus. I process 30 acres with it without any problems. The engine does not overheat - air cooling works efficiently. The transmissions are switched on clearly, without delays. I would like to note that the only drawback appeared after a year of operation - now I can’t completely fill the fuel tank, since when refueling, more than 70% of the plugs shoot out gasoline. Probably high blood pressure. In addition, when fully refueled, consumption increases significantly. In short, I fill the tank to 50-60%, and this lasts me for half a day. Then I refuel again, fortunately the refueling process is quick. Consumption is only 1-1.5 liters.
• Oleg, Murmansk. My walk-behind tractor is perfectly suited for working in harsh conditions. The engine starts with half a turn even at minus 25 degrees, and in the summer effective air cooling comes into play, preventing the engine from overheating. When used with a trailer or hiller, the machine consumes 1-2 liters per hour.
• Konstantin, Stavropol region. I'm happy with the car, I've been using it for three years. A decent device for the money. Equipped with a powerful Japanese Subaru engine. Its recoil is 9 HP. With. enough everywhere, including heavy virgin areas. In addition, there are no problems with cultivating the soil to great depths. The equipment consumes up to two liters of gasoline at maximum load - for example, when transporting goods or driving off-road and on muddy ground. I have 40 acres, the flight is normal. The potential of my Neva is so great that processing 3 acres takes only 1 hour. At sub-zero temperatures, the engine starts 8-10 times, it could be worse. But in the summer the engine starts without much sneezing or interruption.
• Yuri, Novosibirsk. Neva MB-23S Pro 9.0 is an ideal device for processing garden and summer cottage areas. We bought a batch of 10 pieces, now we are working with pleasure. We have several fields, planting and harvesting together with the Neva happens very quickly and efficiently. Consumption on average is 2 liters per hour.
• Nikolay, Perm region. I’ll immediately note the rather compact dimensions and light weight of the walk-behind tractor. It is easy and convenient to maneuver. True, despite its small size, the walk-behind tractor still barely fits in the trunk. After six months of use, noise and vibration appeared, but this does not affect performance yet.
• Yaroslav, Tula region. The Neva MB-23S Pro 9.0 walk-behind tractor was recommended to me by friends who are well versed in such equipment. The car impressed me from the first days of operation. In 2012, the model was not cheap, and besides, it was necessary to buy expensive attachments. Now I have a plow, a hiller and a potato stick. There are no problems with repairs, I service it myself.

Maintenance and main malfunctions of MB-23

Drive belt, pulley

During the operation of the walk-behind tractor, problems sometimes arise in the operation of the V-belt drive.

The operation of the V-belt drive is carried out by a drive belt and two pulleys - wheels that transmit movement to the drive belt.

One of the main malfunctions, according to reviews from owners of Neva MB23 walk-behind tractors and their modifications, is incomplete disengagement of the clutch. There may be several reasons for this malfunction:

• The belt tension when the clutch is pressed is greater than normal;
• The belt tension when the clutch is pressed is less than normal;
• The belt has come apart.

The method for eliminating excessive or insufficient tension is as follows: you need to set the normal belt tension with the clutch lever pressed so that the deflection of the upper part of the belt does not exceed 8-10 mm, if a force of 5 kGs (5 kilograms-force) is applied to the middle part of the belt between the pulleys ).

If the belt breaks, replace the worn belt with a new one.

If the pulleys malfunction, they must be adjusted. If the axis of rotation does not coincide with the axis of inertia, the pulleys are balanced, thereby normalizing the operation of the belt drive.

Carburetor adjustment

It is advisable to maintain the factory settings throughout the entire period of operation of the walk-behind tractor.

The sequence of adjusting the carburetor under operating conditions:

• screw in the full and low throttle adjustment screws until they stop, and then turn them out 1.5 turns, then start and warm up the engine for about 10 minutes;
• set the engine control lever to minimum speed, without allowing the engine to stop;
• set the minimum idle speed (with the engine running steadily);
• Use the idle screw to adjust the idle speed to the maximum value, and then adjust the minimum idle speed;
• the last two manipulations are repeated two more times until the engine operates stably and without failures.

After 100 hours of operation of the walk-behind tractor, you need to change the oil in the gearbox,

Ignition, spark plugs, spark

The reason for the ignition failure on the Neva MB23, MB23S, MB23N walk-behind tractors is often the following:

• malfunction of the ignition coil (magneto)
• malfunction of candles

The ignition on the walk-behind tractor is configured as follows:

• the engine flywheel rotates until the contacts inside the magneto open;
• the flywheel rotates until the piston is compressed;
• checking the flywheel (before there is a knock - this is the overrunning clutch);
• checking the flywheel to the reverse mark (counterclockwise)
• the minimum distance between the breaker contact and the cam should be 0.25 mm, and the maximum 0.35 mm;
• the cam is fixed with a screw located above it.

Spark plugs act up for the following reasons:

• oily (remaining oil must be removed);
• covered with soot (cleaning will help);
• are out of order (need replacement, not cleaning).

Ideally, you need to change candles at every change of season, that is, at least twice a year (spring-summer and autumn-winter).

If the engine does not start due to lack of spark, the cause may be either the spark plug or the magneto. If the problem is in the magneto (ignition system), cleaning the contacts, replacing the capacitor, and adjusting the gaps between the contacts can help. A faulty spark plug simply needs to be replaced. Also, the reason for the lack of a spark may be that fuel is not coming from the carburetor (blowing out the fuel line and cleaning the spark plugs from grease will help).