The NEVA MB-23SD27 motoblock is a family of motoblocks from the MB-23 series (heavy equipment, 2 + 1 gearbox operating in two ranges), has a Robin Subaru (“SD”) diesel engine, power 5.5 liters. s., class "professional" (DY series) - for especially difficult operating conditions for a long time on large areas. The traction force at the maximum working weight on the stubble of grain crops (horizontal surface) is not less than 180 N (kgf). His fellow, additionally equipped with a headlight for working in the dark.

This is a universal single-axle power unit with a 2 * 2 road formula. It is used for operation in private gardens and orchards, in personal plots, in landscape gardening and farms. Works with the equipment included in the package and with other additional equipment.

All modifications are equipped with cutters-cultivators used for tillage, including virgin soil, loosening and milling. A walk-behind tractor equipped with additional trailed or attached equipment is capable of plowing, cultivating soil between rows, planting potatoes, digging up root crops, mowing grass, watering and pumping water that is not intended for drinking, removing snow, clearing areas, transporting goods.

Design features of MB-23SD27

Engine Robin SUBARU DY series (manufacturer Japan), model 27D, equipped with a red casing with black accents, has a power of 5.5 hp.

Robin - a brand of industrial products.

SUBARU is a trademark owned by Fuji Heavy Industrie (FHI).

Robin SUBARU engines entering the Russian market are, in most cases, produced at the factory in Kitamoto, Saitama Prefecture.

DY-series are diesel professional general purpose engines that have been purposefully developed to equip agricultural and construction equipment. A distinctive feature is the engine start with little effort, there is no kickback.

Through the use of an improved mechanical start compression system and a new combustion chamber configuration, reliable starts are guaranteed, operator efforts during start-up are reduced to a minimum.

Model 27 - diesel 4-pin engine with one cylinder, volume 265 cm3, piston diameter 75.0 mm, piston stroke 60 mm, forced air cooling, maximum power 5.5 hp. at 3600 rpm. Marking D (driving shaft) means the selection of engine power from the crankshaft.

The production process involves the achievements of technical progress in the development of multi-purpose engines.

Due to the design features achieved:

Maximum economy. The minimum consumption and high efficiency of fuel combustion are provided by the direct injection system.

Minimum noise. The minimum fuel combustion pressure is guaranteed by a synchronized injection system and combustion chamber. As a result, the noise level is significantly reduced.

Easy start. Ease of starting, as in gasoline models, is achieved through a manual starter centrifugal automatic decompressor.

Minimum vibration level. The balance shaft has been purposefully designed to run as smoothly as possible without vibration. To isolate vibration and noise, the fan housing is made of a specialized "Damping Sheet" material.

High performance. Long service life is guaranteed by modern technologies, crankcase design, system for connecting the cylinder head and cylinder using a tension bolt, forced lubrication system.

Increased reliability is achieved through a reinforced engine case and casting design, high carbon steel crankshaft, automatic decompression system.

Low oil temperature in difficult operating conditions, the design of air cooling channels of a certain shape on the head of the block and on the cylinder block, reinforcement of the crankshaft provide maximum reliability.

The low concentration of toxic substances in the exhaust gases meets the requirements for exhaust emissions: American EPA Phase 2 (2002), Japanese (2003).

As a starting system, a manual reverse starter is used, a retractable cord (an electric starter is an option). The weight of the "dry" engine is 29.5 kg.

Fuel tank, volume - 3.2 liters.

Oil, volume - 0.9 liters.

Equipped with a transmission consisting of a clutch and a gearbox (gearbox).

Clutch has a mechanical mechanism due to the tension of the V-belt drive. It consists of: a V-belt, a tension roller with a lever, a twisted return spring, a rod and control levers located on the steering wheel. While pressing the lever on the left side of the steering wheel, moving, the roller creates the required tension of the drive belt, rotation from the engine is transmitted to the driven pulley of the gearbox.

Reducer gear-chain, mechanical, in an aluminum case, oil-filled (2.2l). Provides monoblock one gear back and two forward, which are switched using the handle on the gearbox. If you rearrange the drive belt in the streams on the driven and driving pulleys, the 2nd range of speeds of rotation of the output semi-axes of the gearbox appears. Thus, 4 forward gears and 2 reverse gears are realized.

By shifting gears, it is possible to select speeds depending on the type of work or transport of goods. In first gear, a speed of 1.8 km / h is used for agrotechnical heavy work on virgin soil - difficult soil, in fourth gear, a speed of 12 km / h is used during the transportation of goods not more than 500 kg on a trolley.

Shaft release mechanism- built into the gearbox, mechanical, guarantees a turn to the left (reversal) of the walk-behind tractor. With its help, turning left is facilitated due to the fact that the left wheel stops rotating. The lever on the left side of the steering wheel is designed to activate the drive of the gearbox axle shaft unlocking device (left). Due to the mechanism, an easy turn with 8 cutters is possible.

PTO pulley- side pulley for V-belt transmission, placed perpendicular to the axis of symmetry (longitudinal) of the walk-behind tractor. The rotational speed is similar to the engine crankshaft speed. The rotation of the power take-off is transmitted from the drive shaft pulley through a V-belt drive. Used to connect outdoor working equipment.

Frame- these are steel stamped squares in the amount of 2 pieces. A gearbox, an engine, protective wings, a steering wheel adjustment unit in a horizontal position are mounted and fixed with bolts on it. In the tail and front parts of the frame there is a bracket, a pin and a hitch for mounting and fixing the trailed and attachment equipment recommended for use.

Hitch Bracket and Drawbar- with their help, removable trailed equipment is attached that does not require a working drive (potato digger, hiller, cart, plow).

Pin on the frame(front) - used to fix front-mounted equipment, such as rakes, brushes, dumps, weights.

Coulter and cultivation depth limiter- mounted at the rear of the walk-behind tractor, used to limit the speed of movement and the depth of cultivation during soil cultivation, installed at different heights, determined by the type of cultivated soil.

Cutters-cultivators- mounted on the left and right axle shafts of the gearbox, used for loosening, the layer does not turn around.

Pneumatic wheels - used for transporting a walk-behind tractor with and without equipment installed on it.

Additional attachments

It has about 20 titles. In addition to the basic equipment MB-23SD27, it can be used with a plow, hiller, lugs, harrow, potato planter, snow blower, rake, rotary mower, etc.

Technical characteristics of the Neva MB-23SD27 walk-behind tractor

Engine	Diesel Robin Subaru DY27-2D
Engine power
Working volume
Fuel tank volume
Fuel type	diesel
Number of speeds	4 forward / 2 back
forward speed	1 - 3.76 / 3.01; 2 - 12.3 / 11.45 km / h
Back speed	3.21/2.57 km/h
Clutch	V-belt drive with tension roller
Reducer	mechanical, gear, chain
Processing width
Processing depth
	V-belt pulley
	uniaxial
Ground clearance
Track width
Turning radius
Number of cutters
Cutter diameter
Milling frequency	20-160 rpm
Dimensions (L*W*H)	1740*650*1300mm

The Neva MB-23-SD diesel walk-behind tractor is designed for a long service life in heavy soils, as well as for household work that requires a particularly long and intense load on the equipment. It provides year-round use and installation of the entire range of attachments.

The Neva MB-23SD motoblock is equipped with a Robin-Subaru single-cylinder four-stroke diesel engine that provides maximum torque at low speeds, high traction power, and economical fuel consumption.

Neva MB23-SD provides use at a low arable speed of 2 km/h, which effectively allows the use of a walk-behind tractor for agriculture that requires a large driving force (for example, when plowing or hilling). An oil pump mounted on the engine ensures optimum lubrication.

Diesel walk-behind tractor Neva MB-23SD performs the whole range of agronomic and household work: cultivation, hilling, cutting furrows, plowing with a plow, digging up root crops, irrigation and water pumping, grass mowing, snow removal (with snow tools, a shovel or brush), transportation (with adapter).

Motoblock Neva MB-23SD engines

This diesel walk-behind tractor is equipped with an engine or from. It has four forward and two reverse gears. The maximum speed reaches 12.5 km/h. When working with cutters, the working width is from 86 to 170 cm and the loosening depth is 20 cm.

Neva MB-23-SD is designed for continuous operation in all weather conditions. The motor starts without problems in the heat and extreme cold. The equipment copes with labor-intensive agricultural work, transportation of goods, snow clearing. A design feature is the presence of a low plowing speed, which does not exceed 2 km / h.

The DY23/DY27 diesel engine uses an oil of at least SS type, which is determined according to API classification. The first replacement is carried out after 25 hours of operation. Subsequent lubrication changes are made after 100 hours.

Characteristics

• oil-filled gear-chain reducer
• diesel long life engine
• low plowing speed (2 km/h)
• high traction force (190 kgf)
• oil pump
• multifunctional use

Technical features

• Clutch. Belt, includes: V-belt, tension roller with return spring, tension control levers located on the steering wheel. When the lever is pressed on the left side of the steering wheel movement, the shaft creates the required drive belt tension on the drive toothed pulley.
• Reducer. Geared, mechanical, in an aluminum case with an oil capacity of 2.2 liters. The monoblock provides for a doubling of the number of speeds, which is achieved by switching the handle on the drive. When the drive belt is repositioned, the 2nd range of speeds of the values ​​of the output gear drive of the semiaxes appears on the drive pulleys. Thus, 4 forward and 2 reverse gears are realized.

The change in speed is selected depending on the type of work or transport. In first gear for heavy agricultural work on virgin soil, the speed is 1.8 km / h, in fourth gear, the speed is 12 km / h - used when transporting loads up to 500 kg in a trailer.

• The mechanism for dividing the semi-axes is mounted in a gearbox that provides a left turn (turn) of the walk-behind tractor. With it, the left turn is facilitated by the fact that it stops turning the left wheel. The lever on the left side of the steering wheel is designed to activate the axle release device drive (left). Thanks to the mechanism, a simple reversal with 8 cutters is ensured.
• PTO pulley is a side pulley of a V-belt transmission located perpendicular to the motor cultivator of the symmetry axis (longitudinal). The speed is the same as the engine speed. PTO rotation is transmitted from the pulley drive shaft through a V-belt drive. The power take-off shaft is used to connect external operating equipment.
• The frame is steel stamped squares in the amount of 2 pcs. A gearbox, an engine, protective wings, a steering wheel adjustment unit in a horizontal position are attached and bolted to it. In the rear and front parts of the frame there are brackets and a pin coupling for mounting and fastening the attachments and trailed equipment recommended for use.
• Mounting sleeve and connecting bracket - with their help, removable towing equipment is attached that does not require a working drive (hiller, trailer, plow, etc.).
• Frame Pin (Front) - Used to attach front attachment equipment such as rakes, brushes, blades, weights.
• Coulter and cultivation depth limiter - installed at the rear of the walk-behind tractor, used to limit the speed of movement and cultivation depth, during cultivation it is installed at different heights, determined by the type of cultivated soil.
• Cultivator cutters - mounted on the left and right axial shafts of the gearbox, used for loosening.
• Pneumatic wheels - used to transport a walk-behind tractor with and without equipment installed.
• Additional hangers. Attached equipment for the Neva walk-behind tractor has about 20 items. In addition to the main equipment MB-23SD, it can be used with a plow, lugs, a harrow, a potato digger, a snowplow, a rake, a rotary mower, etc.

General specifications

Motoblock type according to GOST 28523-90	Heavy
Walk-behind tractor dimensions (no more)	Length: 1740 mm Width: 650 mm Height: 1300 mm
Dry weight (weight)	112-115 kg (up to 125 kg with headlight and electric starter)
Traction force	194 kgf
Forward speed at engine speed 3600 rpm	First gear: 3.76 km/h Second gear: 12.3 km/h Reverse: 3.21 km/h
Angle of lateral static stability	15°
Power take-off shaft (BOM)	V-belt pulley
Running system	Single axle, wheel formula 2×2
Ground clearance	14 cm
Transmission	Mechanical, gear-chain
Number of gears	Four gears - forward Two gears - reverse
wheels	Pneumatic - 4.5 × 10
Track	Variable, step adjustable
Track width	Normal: 32cm With extensions: 57 cm
turning radius	110 cm
Cultivator cutter diameter	36 cm
Capture width	4 cutters: 0.86 m 8 cutters: 1.6 m
Tillage depth	up to 20 cm
Steering gear	Rod, adjustable
Engine	4-stroke, diesel, single-cylinder

To perform a small amount of work on a personal plot, the Neva walk-behind tractor is used. A universal mobile vehicle based on a single-axle chassis has several modifications and is equipped with attachments.

Types of walk-behind tractors

The model range is represented by several types of walk-behind tractors, which differ from each other in the installed engine.

Among the best units are:

• MB-2N MultiAgro Honda 5.8 l. With.;
• MB-2K;
• MB-2B;
• MB-2S;
• MB-23.

Neva motoblocks are designed to work on any soil, create a working depth of up to 32 cm. The MD-23SD unit, equipped with a 7 hp Subaru diesel engine, has good performance. With.

Among all models, this is the most popular. The universal mobile vehicle MB-23 is a heavy unit equipped with a 10 hp engine. With.

Many models are equipped with Briggs & Stratton professional motors with power from 6 to 7.5 hp. With. The Neva unit is popular - the walk-behind tractor is equipped with a compact imported engine.

The motor has a significant traction force and a long service life. The gearshift system is easy to operate, providing optimum speed for any plowing job.

Main settings

The main property of a walk-behind tractor is reliability and quality. Technical characteristics of the model Neva MB-23 9 l. With. allow you to evaluate the walk-behind tractor as a design with high performance.

The main components for the MB-23 model:

• frame;
• reducer;
• transmission;
• engine;
• cutters;
• hitch bracket.

The maximum speed for the walk-behind tractor is set using a gearbox that has 3 speeds for moving forward and one for reverse. Often in the process of work there is a need to change the speed of movement of the unit. To increase the rear speed on the Neva walk-behind tractor, you should use the reinstallation of the drive belt.

The universal mobile device has additional equipment:

• plow;
• hiller;
• cutters;
• potato digger;
• segment and rotary mowers;
• trailer.

Engine displacement - 306 cm³, power - 10 liters. With. The ignition system of the walk-behind tractor helps the device to work flawlessly in all weather conditions.

Before the start of plowing, the equipment is run in. The user complies with all the rules specified in the instructions. If there is a problem, how to make a reverse speed on a walk-behind tractor in order to plow heavy soil, the gear pair mounted in the wheel gearboxes is replaced. Mounting a gear wheel increases the speed by 1.5 times. A second option is possible - installing large diameter tires (704 mm).

Diesel equipment of the unit

The description of the mobile device of CJSC Krasny Oktyabr allows one to judge the quality of products, capacity and price. The Neva diesel walk-behind tractor is equipped with an engine of the Japanese brand Robin Subaru DY27-2D.

The motor has a power of 5.5 liters. With. Attached equipment is installed on each cultivator model:

• mower;
• root crop digger model B904L;
• snow removal equipment.

For the Neva walk-behind tractor, a functional and easy-to-use gearshift system is used. The Pro version of the diesel is equipped with a headlight and an electric starter.

A simple light class model is equipped with a 3 liter fuel tank. The diesel engine can be equipped with water cooling, allowing the unit to improve the efficiency of heavy loads.

The oils poured into the engine must correspond to the brand provided by the manufacturer. The operation of the D6 diesel engine of the unit is carried out after its depreservation. Disassembly of the unit is designed to remove grease from the outer surfaces of components and parts, warm up the diesel engine. How many operations in the process of re-preservation must be carried out is indicated in the instructions.

The user gets acquainted with the operation of the units in winter conditions, since motor cultivators require filling the oil set regulator with a mixture of 50% diesel fuel and 50% MS-14 oil. In winter, the diesel engine is heated with hot water and oil. Starting a cold engine is prohibited.

Reducer Features

Thanks to the increased number of gears, the user can choose the right speed for any agricultural operation. has an increased gear ratio, which allows you to increase the capabilities of the unit using less power.

The gearbox of the Neva walk-behind tractor is equipped with a silicone sealant, which provides a reinforced coating of the body. A feature of the Neva walk-behind tractor gearbox is that the components necessary for changing gears are mounted on its outer part of the body.

The MultiAgro reducer is mechanical, gear, chain, has a streamlined shape that reduces resistance in the process of plowing the soil. The oil level in the gearbox ensures the successful operation of the unit and protects the engine from premature wear.

Before pouring fuel, you must familiarize yourself with the rules for handling the gearbox. The user is obliged to navigate the price and quality of the liquid in order to cope with the oil change in the gearbox of the Neva walk-behind tractor.

It is necessary to pay attention to the degree of viscosity of the material and special additives. The Multi Agro gearbox is filled with ZIC 10w40 gear oils of the API-SM / CF standard. The technical data of Super T-3 85W-90 lubricant should be studied before filling it into the gearbox.

Operating manual for motoblock Neva MB-23B-8.0

The small-sized device is equipped with trailed and mounted implements for plowing, loosening, cultivating the soil. The instruction manual introduces the user to the general provisions, which contain information regarding the operation of the walk-behind tractor, maintenance and storage of the unit.

The operating manual contains information about possible malfunctions and tips for correcting them. The instructions indicate the features of the engine for any modification of the walk-behind tractor.

The manual of the Neva Compact walk-behind tractor indicates the purpose of the main parts of the unit:

• reducer;
• cutter clutch mechanism;
• coupling bracket;
• cultivation depth limiter.

The user, having familiarized himself with the control mechanism of the walk-behind tractor, determines how to increase the speed while plowing heavy soil. The instructions indicate a lever that allows you to switch gears with the engine running and the clutch disengaged to the nearest neutral gear.

The accelerated operation of the motor with distorted vibration is a reason for inspecting the walk-behind tractor and repairing damage. The usual set of cutters is completely replaced if the edges of the knives are damaged.

Assembly units and parts of the gearbox, running gear, engine DM-1K are attached to the walk-behind tractor. Components for engines of the DM1K-6.2 and DM1K-7.5 models are presented:

• valve group kit;
• piston with connecting rod 005.40.0350 (positions 6, 7, 8, 9, 0, 11, 12).

The manufacturer offers a set of spare parts for gear shifting for MB-2 and MB-23 units. The assortment includes accessories for the Neva walk-behind tractor - the package includes the T-650R release lever, clutch lever, etc.

The MultiAgro gearbox with an extended set of gears is included in the spare parts for the Neva MB-2 multi-speed walk-behind tractor. The gearshift lever for the universal mobile tool is supplied with other spare parts. Delivery of component parts is carried out by order of the consumer according to the consignment note and invoice.

Unit repair

The owner studies the device of the walk-behind tractor and promptly eliminates malfunctions. When the engine is running, ignition may occur, black smoke comes out of the muffler, carbon deposits form on the spark plug.

In this case, it is necessary to disassemble the air filter and clean it. If the spark disappears, the engine does not start, and the candle is wet, the causes of the failure in the ignition system are determined. The owner of the walk-behind tractor cleans the electrodes, rinses and dries the parts. It is necessary to disassemble, observing the following rules:

• drain the oil from the crankcase;
• set the plug of the filler hole;
• Disconnect the hose and air filter.

Next, you should dismantle the rest of the engine. Before assembling the engine, the parts are cleaned of dirt, the components to be installed are washed. When setting up the crank mechanism, the suitability of the oil scraper rings for work is checked.

Piston rings are changed only in a complex.

Engine DM-1-01 and its modifications

The Neva motoblock is equipped with an economical 6 hp engine. With. Working fuel is used: gasoline AI-80, AI-92 according to TU-38.001165-2003. The carburetor is equipped with an air filter for easy starting at low temperatures. Automatic decompressor reduces starting effort. Stable operation is ensured by contactless electronic ignition.

The engine consists of parts:

• crank mechanism;
• gas distribution systems;
• fuel mechanism;
• air supply and elimination of processed gases.

The ignition of the walk-behind tractor is necessary to ensure uninterrupted sparking in the candle.

Before starting work, the engine is depreserved. The fuel tank is filled with gasoline in the amount of 2 liters, a cold (cold) engine is started.

Some users do not know how to increase the crankshaft speed. Excessive load without warming up the engine leads to rapid wear of the pairs of the piston group and, as a result, causes them to jam.

The NEVA MB-23SD-27 diesel walk-behind tractor is another novelty of the St. Petersburg manufacturer of small agricultural equipment, which, unlike other models, is equipped with a premium Subaru DY27-2D professional diesel engine. This model is built on the 23rd base, which is considered the most powerful in the line. The heavy weight of 112 kg allows you to confidently plow virgin soil even without additional weighting. The engine power of 5.5 horsepower does not seem very large, but do not forget that this power unit is diesel, which means that very high torque is achieved even at low revs. This feature of the engine makes this walk-behind tractor one of the most powerful and high-torque among the entire 23 base. Otherwise, this is the same walk-behind tractor with all its versatility and functionality. Thanks to the power take-off shaft, you can install the entire range of attachments, and trailed equipment is connected according to the classic scheme on the back of the device. In winter, you can install a snow blower, sweeper or snow plow. With the help of these nozzles, you can effectively deal with snow blockages, clean paths and other backyard areas. In warm months, a rotary lawnmower, a pump attachment, a potato planter, a potato digger, and more will come in handy. By installing a motoblock trailer, you can transport crops and other goods, with a payload of up to 500 kg inclusive.

Motoblock NEVA MB-23SD-27 with a diesel engine Subaru DY27-2D is produced in St. Petersburg at the Krasny Oktyabr plant. It should be noted that all products of this enterprise undergo voluntary certification and fully comply with the most stringent European quality and safety standards. The gearbox of this walk-behind tractor deserves special mention, it is geared and closed in a durable aluminum dust-proof housing. Its uniqueness lies in the unprecedentedly high traction force of 180 kgf and in the unique resistance to extreme loads. For ease of use, cable control of the control levers, a steering column adjustable in two planes, a system that facilitates starting the engine, rubber grips on the handles, pneumatic wheels with a self-cleaning tread and convenient weight distribution of the entire device are provided.

If you want to buy a NEVA MB-23SD-27 walk-behind tractor with a Subaru DY27-2D diesel engine in Moscow on favorable terms, then the website online store will help with this. We offer manufacturer's dealer prices for all NEVA products, provide an official guarantee and provide a complete package of all necessary documentation. When you come to our retail store in Shchelkovo to pick up this product, we will be happy to provide you with an additional discount for self-pickup or give you a practical gift.

Features of the diesel walk-behind tractor NEVA MB-23SD-27

• Professional walk-behind tractor for a huge list of agricultural work, designed for increased loads.
• Diesel Japanese engine Robin-Subaru DY27-2D of the premium series, the power and reliability of which is enough for long-term and uninterrupted work on difficult land plots. The motor has an impressive resource of more than 5000 hours, low noise and vibration, shows the best torque in its class and has a forced lubrication system.
• The walk-behind tractor is made on a heavy base MB-23 and has a weight of 112 kg, which allows you to work effectively on virgin lands and dense soils with a high content of loam.
• The unique, patented gearbox delivers best-in-class traction, is highly durable, and is housed in a die-cast aluminum and dust-tight housing.
• The adjustable steering wheel allows you to individually adjust the control for any operator.
• The ability to use the entire range of attachments and trailers for motor blocks of the MB series.
• The wheel release function allows you to effortlessly deploy and turn this model in one place.
• Easy start of the motor thanks to the built-in decompressor.
• An electric starter can be installed as an additional installation.
• Low fuel consumption with high performance and high torque.
• High level of service support throughout Russia.