Engine to replace with MB 1

The Neva MB-1 walk-behind tractor has been produced since 1984 and during this time has gained the trust of many users. It has been modernized and improved, but there are still working copies from the 90s of the last century.

Manufacturer of Neva walk-behind tractors - Red October plant, St. Petersburg. This is a specialized enterprise for the production of motorcycle and agricultural machinery. The first Neva brand walk-behind tractor was released in 1984.

The walk-behind tractor is constantly being modernized and is still popular among buyers, as it has stood the test of time. The manufacturer has developed and equipped this equipment with a new Multi Agro gearbox with an increased number of gears.

The Neva MB1 MultiAGRO walk-behind tractor has 3 forward gears and 1 reverse gear. By rearranging the belt on a double-strand pulley, you can get another set of gears that also have a functional purpose. Thus, for each agricultural technical and economic operation it is possible to select the appropriate speed, thereby increasing the productivity of the work performed.

In addition, the MultiAGRO gearbox is characterized by an increased gear ratio, which improves the traction and grip qualities of the walk-behind tractor.

The gear shift lever is located on the steering wheel, which is convenient when using the MB 1 walk-behind tractor as a vehicle.

In the MB1-FS/MB1-FS Premium modification, the presence of an electric starter, which is powered by an installed battery and a generator on the engine, makes it easier to start it, and also makes it possible to use the headlight at night. Now, in order to start the device, it is not necessary to pull the manual starter; you can simply turn the ignition key.

Motoblock Neva MB-1 detailed technical specifications

Type of walk-behind tractor (GOST 28523-90)	Average
Overall dimensions: length * width * height, mm no more	MB1: 1600x660x1300 MB1 Premium: 1600x660x1300 MB1-FS: 1650x660x1300 MB1-FS Premium: 1650x660x1300
Weight, dry, kg, no more	MB1: 75 MB1 Premium: 75 MB1-FS: 85 MB1-FS Premium: 85
Traction force on transport wheels with a load of 20 kg, kgf, not less	140
Angle of transverse static stability, degrees, not less	15
Ambient temperature limits, C	From minus 25 to plus 35
Forward speed (second value when rearranging the belt) of movement on pneumatic wheels, at an engine speed of 2500 rpm (max, engine torque), km/h	MB1/MB1-FS: First gear 2.1/2.6; Second gear 7.4/9.2; Reverse 1.8/2.3; MB1 Premium/MB 1-FS Premium: First gear 1.9/2.4; Second gear 3.7/4.6; Third gear 6.6/8.3; Reverse 1.6/2.0;
Forward speed (second value when rearranging the belt) of movement on pneumatic wheels, at an engine speed of 3600 rpm (maximum engine power), km/h	MB1/MB1-FS: First gear 3.0/3.8; Second gear 10.6/13.3; Reverse 2.6/3.3; MB1 PremiumMB1.FS Premium: First gear 2.7/3.4; Second gear 5.4/6.7; Third gear 10.0/12.6; Reverse 2.3/2.9;
Power take-off shaft (BQM) (GOST28524-90)	Side pulley for V-belt transmission, located perpendicular to the longitudinal axis of symmetry of the MB. The rotation speed is equal to the engine crankshaft speed.
Possibility of installing attachments	there is - active (harvesting brush, snow blower, water pump, lawn mower) and passive through a coupling (hiller, plow, cart, snow blade, potato digger).
Chassis system	Single-axle, wheel formula - 2x2
Ground clearance, mm	120
Clutch	Constantly switched off, activation mechanism - tension roller for the V-belt
Gearbox	Mechanical, gear-chain with double-sided axle release
Number of gears	MB1/MB1-FS ((2+1) 2): Four gears - forward; Two gears - reverse. MB1 PremiumMB1-FS Premium ((3+1)2): Six gears - forward; Two gears - reverse.
Tire	Pneumatic - 4.00*8; 16x6.50-8
Track	Variable, adjustable in steps
Track width, mm	Normal 320 With extensions 570
Diameter of milling cultivators, mm	360
Axle (hub) diameter	30 cm
Working width, m	6 cutters 1.2 4 cutters 0.86
Tillage depth, cm	up to 20
Steering gear	Rod, with the possibility of intermediate settings of the steering wheel in vertical and horizontal planes
Fog lamp	MB1/MB1 Premium: - MB1-FS/MB1-FS Premium: 202A,3743
Lamp	MB1/MB1 Premium: -MB 1-FS/MB1-FS Premium: NC 12V 55W
Battery	MB1/MB1 Premium: - MB1-FOMB1-FS Premium: DT 1218
Auto fuse	MB1/MB1 Premium: - MB1-FS/MB1-FS Premium: F133 10A
Engine	MB1/MB1 Premium: 4-stroke, carburetor, gasoline, single-cylinder with forced air cooling MB1-FS/MB1-FS Premium: 4-stroke, carburetor, gasoline, single-cylinder with forced air cooling, electric starter and generator
Fuel type	Pure gasoline AI - 92, AI - 95
Engine oil	SAE 10W30, SAE 10W40, SAE 10W50, SAE 15W30, SAE 15W40, SAE 30, SAE 40. Brands of fuel, engine oil and refills - according to the Engine Manual
Engine cooling	air
Gearbox (oils used and operating temperature)	Transmission oil SAE85W-90 API GL-5 (it is allowed to use TM-5 oil (from -25 to +35) GOST 17479.2-85). Filling volume l., 1.5.
Belt	A53
Air pressure in pneumatic tires:	4.00-8 - 1.5 +0.2 kgf/cm 2 16x6.50-8 - 2 -0.2 kgf/cm 2

Engines of the Neva MB 1 walk-behind tractor

MB modification	Engine brand and type
	(2+1)*2
MB1-S7.0
MB1-S6.5 PRO
MB 1-B6.5	I/C 6.5 from Briggs & Stratton (4-stroke, single-cylinder, air-cooled, with recoil starter)
MB1-B6.0	I/C 6.0 Compact from Briggs & Stratton (4-stroke, single-cylinder, air-cooled, with recoil starter)
MB1-B6.0-FS
MB1-B6.0K	1/C 6.0 Compact from Briggs & Stratton (4-stroke, single-cylinder, air-cooled, with manual starter)
MB1-S7.0 Premium	EX21 from Subaru (4-stroke, single-cylinder, air-cooled, with manual starter)
M51-C6,OPRO Premium	EX17 from Subaru (4-stroke, single-cylinder, air-cooled, with manual starter)
MB1-B6.0-FS Premium	I/C 6.0 from Briggs & Stratton (4-stroke, single-cylinder, air-cooled, electric starter and generator)
Reducer Multi Agro (2+1)*2
MB1-B 6.5	Briggs&Stratton (USA) RS950
MB1-N	Honda GP200

Some technical characteristics for the old model Neva MB-1 walk-behind tractor

Belt for old model Neva MB-1 walk-behind tractor (forward and reverse belt)

Carburetor adjustment Neva MB 1

Motoblock NEVA MB 1B 6.0 OFS Premium with headlight, electric starter and battery - video

This article is dedicated to the reliable “assistant” of every summer resident. We are talking about the Luch MB 1 walk-behind tractor. This model is intended for small plots of land, your own vegetable gardens, as well as for garden care. In addition, the walk-behind tractor can be used for work in suburban areas and swampy areas. Despite the fact that the walk-behind tractor is produced in Russia, the model is not particularly popular. The manufacturer recommends cultivating light soils.

The main distinctive characteristics of Luch MB 1 are ease of operation and compact size. It is worth considering that the compact dimensions allow you to transport the walk-behind tractor. The versatility of the unit is achieved by compatibility with a large number of attachments. The main power unit consumes a small amount of fuel. This, in turn, will save money on fuel, which is a significant help in our time. Beam MB 1 can perform the following work:

plow the land;
harrow;
dig up root crops;
clear snow from the yard, garden, vegetable garden;
transport various cargoes;
water, spray plants.

To start working with a walk-behind tractor, you do not need a higher education. The unit is very easy to use. But, before starting the work process, you will still have to study the design and operating principle of the attachments. In case of any problems, the operator can always use the repair instructions for the Luch MB 1 walk-behind tractor.

Characteristics of the walk-behind tractor

The engine is the KADVI 168F-2A power unit, which was developed similar to the famous Japanese company Honda. The engine is 4-stroke, with one cylinder. The walk-behind tractor uses gasoline as fuel. Air cooling system. The principle of operation of the fuel system is based on the principle of operation of the carburetor of the Luch walk-behind tractor. The productive element is started by a manual starter. Engine power is 5 hp. Recommended fuel types: AI-76, AI-80, AI-92.

While the walk-behind tractor is operating, it is strictly forbidden (by the manufacturer) to refuel the gas tank or come into contact with the tip of the spark plug and the ignition wire. Main overall dimensions of Beam MB 1: length - 1500 mm; width - 600 mm; height - 1150 mm. The minimum turning radius is 1100 mm. In the working position, the unit grips 700-1150 mm, the grip depth is 360 mm. The gas tank is designed for 3.6 liters. In this case, fuel consumption is 1.5-2 liters. at one o'clock.

Detailed review of "LUCH"

When purchased, the factory equipment includes pneumatic wheels, rototillers and extension cords. Beam MB 1 has several modifications. The models differ from each other in the installed power plant. Thus, the manufacturer installs Japanese Subaru engines. In addition, there are models with engines from such brands as Lifan, Vanguard, Lian-Long. Without a doubt, the most models were produced with the domestically produced KADVI 168F-2A engine. During its development, Honda technologies were not absent.

The model is very reliable, serious breakdowns are quite rare. Due to the fast and confident operation of the walk-behind tractor, the operator is able to cultivate the land productively. Which in turn will have a positive impact on the harvest and profit. Resistance to low temperatures allows you to operate the walk-behind tractor in winter.

Let's get back to the renovation. Problems with the engine and walk-behind tractor in general occur very rarely. The main “trouble” can be caused by insufficient oil level in the engine. As a result, the well-known knock occurs. Therefore, you need to constantly monitor the oil level! Let us list the main advantages of the model:

Simple and easy control system. The operator does not need to exert much physical effort to cultivate the garden.
High productivity, which in turn has a positive effect on operation as a whole.
The chain reducer ensures smooth operation of the unit.
Compact dimensions make it possible to transport the walk-behind tractor.
Special wings installed at the bottom serve as a protective barrier against dust and dirt. These protective elements of the housing significantly extend the service life of the engine.
A functional gearbox allows you to select the required speed mode (2 forward and 2 reverse gears).

Pneumatic wheels have tenacious contact with the ground, slipping is not possible.

Motoblocks Neva MB1 and MB2 are suitable for use in small areas of garden plots, summer cottages and even small farms. With frequent enough use, sooner or later you will have to replace the walk-behind tractor engine. As people say, nothing lasts forever.

What does replacing the engine on a Neva MB1 or MB2 walk-behind tractor give?

You can replace the engine on a walk-behind tractor not only with a model of the brand with which it was supplied, but also with another one, for example, with more or, conversely, less power. This raises the question - which engine to choose for the Neva walk-behind tractor? The first models of Neva walk-behind tractors in the initial configuration were produced with an engine from a Russian manufacturer, type DM-1K. At this time, new Neva walk-behind tractors can be supplied with foreign-made engines from Robin-Subaru, Briggs&Stratton, Honda, etc.

Replacing the engine for a Neva walk-behind tractor with an imported one will make its service life longer, but such engines are much more expensive than domestic ones. Therefore, if you have to replace the engine on a Neva walk-behind tractor, you need to know that such motors are durable, wear-resistant, but also expensive. You need to know what alternatives there are to Japanese-made products. It is also necessary to consider whether the replacement will be done with your own hands or at service stations.

Options for replacing the engine on the Neva MB 1 or MB2 walk-behind tractor

There are many replacement options, but the most common ones are:

installation of a Robin-Subaru engine;
use of a Chinese engine for the Neva walk-behind tractor;
replacement with a Honda engine.

The replacement option is chosen based on the price-quality ratio, maintainability, climatic factors and other nuances.

Advantages of the Robin Subaru engine

Durable housing and long service life. Advanced air purification system, forged steel crankshaft with bearings on both sides. The ignition coil is replaced by electronic ignition, and liners cast from cast iron increase the engine's service life.
Very high reliability. Thanks to special cooling channels in the block and head, the oil does not overheat even under heavy loads. Also, using metal instead of plastic increases reliability.
The engines are assembled in Japan in a factory where a high degree of automation has been achieved, which allows the production of a huge number of parts.

Low oil consumption. Due to the vertically located cylinders, all rubbing parts are uniformly lubricated, thereby achieving a sufficiently large torque on the shaft. The special design of the oil intake ring and excellent crankcase ventilation minimize oil consumption.
Reduced noise due to a rigidly fixed crankshaft and a specially shaped air filter, replacement of the cross section of the piston and camshaft.
Quick start. Due to the large bobbin in the starter, resistance during the starting process is quickly overcome, and automatic compression reduction for the operator makes starting effort easier.
Highly environmentally friendly. Subaru engines are not inferior to European environmental requirements, which were introduced in 2002, and Japanese exhaust gas requirements of 2003.
Compact and lightweight design. Although the strength of the engines is maximum for their size, they are small in size and weight. This is achieved through modern computer technologies. Minimum distances between components and assemblies are achieved using modern housing materials.

Advantages of the HONDA engine

They have high power, from 1.5 to 12 hp.
They have high performance.
The engines of this company are equipped with a spray lubrication system, which will significantly increase the service life of the motor.
They have forced air cooling, which will allow the engine to work longer. Thanks to this system, the engine does not overheat.
Starting the engine after being idle is quick and easy thanks to automatic decompressors. The system starts manually and the start time does not depend on weather conditions;
Honda engines are reliable and economical and meet environmental standards.

Advantages of Chinese engines

Relatively low cost.
Modern designs.
High reliability.
Universal in their purposes.
Availability of spare parts.

Chinese engines for walk-behind tractors have gained great popularity due to their advantages. Depending on their purpose, motors are equipped with additional equipment (gearboxes, starters and others). Only the latest equipment is used in the production of engines. After purchasing such an engine, you can use it immediately, without additional preparation. They are perfect for all types of walk-behind tractors, even homemade ones.

Land and hard work are symbols of agriculture. In the twenty-first century, it is no longer necessary to cultivate the land manually. Everyone knows that there is no need to dig up the garden or harvest the crops yourself. For this purpose, machines have come to the rescue, making life easier for many small farmers. These machines are walk-behind tractors.

Unfortunately, the manual labor of one person (removing weeds, plowing the land, harvesting crops, and much more) is inferior to mechanized labor. So walk-behind tractors are the way to a prosperous economy.

What is a walk-behind tractor?

A walk-behind tractor is a very useful unit that helps a person replace manual labor with mechanized labor. It will always come in handy on the farm. Versatility and compactness are the main qualities of the walk-behind tractor. In terms of its working characteristics (and appearance), this unit resembles a mixture of a lawn mower or verticutter and a small tractor. It is characterized by not too high power, which is quite enough for it, and the versatility inherent in a tractor.

What a walk-behind tractor is capable of

Any such unit, in particular the very common MB-1 walk-behind tractor, should replace manual labor with mechanized labor in order to increase the productivity of an enterprise or just a summer cottage.

What functions does it perform? First of all, it’s worth remembering that a walk-behind tractor is a universal machine. He alone can cultivate the land: plow, loosen, weed, rewild, clear the area of snow, work with a rake, and so on, harvest (dig up root crops). The MB-1 walk-behind tractor can transport heavy loads, water and tools; it can load up to three hundred kilograms if there is a special trailer for walk-behind tractors. As you can see, its functions resemble a tractor.

Description of MB-1

The MB-1 “Neva” walk-behind tractor is produced by the Red October plant, which remains and has changed little since Soviet times. This factory is the leader in all Russian production of not only walk-behind tractors, but also another walk-behind tractor MB-1 - the predecessor of the Neva MB-2 walk-behind tractor. They are similar in many ways, but in appearance they are almost indistinguishable.

Marking

Everything is very simple here. “MB” is an abbreviation of the word walk-behind tractor. The same plant has motor cultivators, which, in turn, are designated “MK”. In order not to confuse these slightly different types of agricultural machinery, we came up with short notations.

Who should buy MB-1 (motoblock)?

To make your farm prosper and become more efficient, it is better to buy a walk-behind tractor. Who exactly will need the MB-1 (walk-behind tractor)? Of course, you can’t dig up huge fields with one such unit, but you can dig up a large vegetable garden. A large plot of land is a niche in which the MB-1 walk-behind tractor thrives. It doesn’t have enough power to plow the fields, but it doesn’t need it. It’s difficult for one person to dig up twenty to thirty acres of land, but with a walk-behind tractor it’s still easier. This unit is designed for private gardens or small farms. They are the ones he should serve first. Every small farmer definitely needs a walk-behind tractor, as this machine is very useful on the farm, and it will definitely come in handy.

More about the MB-1 model

Since this unit is assembled at a domestic plant, the MB-1 and, accordingly, the purchase of spare parts will be cheaper than for imported models. It should be noted that sometimes very good imported engines (mainly from Japan) are installed on a walk-behind tractor. Such units have a good reputation among summer residents due to their high-quality and powerful motor.

Motoblocks "Neva" are very widespread. Their main qualities are reliability, durability and availability. It is because of this that “Neva” has become so popular. The most common model is MB-2, but the earlier-produced MB-1 unit is also widely used. In principle, in terms of basic technical characteristics it is not inferior to the newer version. MB-2, of course, is more convenient and aesthetically pleasing, if one can say so about a walk-behind tractor.

The engine power of the Neva MB-1 walk-behind tractor reaches six horsepower. As they say, just right for such a unit. Thanks to its versatility, you can hang a lot of useful equipment on it that is designed for such machines. Comfortable long handles help with control.

The car itself sits on fairly large, seemingly out-of-place wheels. These powerful wheels help the walk-behind tractor navigate difficult places and on wet soils. After all, it should serve in any weather.

The MB-1 has a manual transmission. The MB-1 walk-behind tractor has a chain gearbox, like almost all domestic inexpensive units. There are only two speeds: forward and reverse. By the way, not all walk-behind tractors have reverse gear. During operation, the device picks up speed from six to twelve kilometers per hour. Due to its reliability, the unit is used in the harshest conditions, which it cannot handle. If you follow all the rules of use, the MB-1 walk-behind tractor will last a long time, helping you cope with all difficulties.

16.2.2014, 21:25

Good afternoon. I decided to install a Chinese engine on the Neva MB-1 walk-behind tractor, but I didn’t think that the reverse speed on the MB-1 is activated using a second belt, unlike the MB-2, on which the rear speed is activated in the gearbox using a lever. Can someone tell me how to overcome the situation, if there is a photo, I will be very grateful..

16.2.2014, 21:27

So put pulleys on several streams and there are no problems.

16.2.2014, 23:32

The pulley is sold in Energia. We installed a Chinese Greenfield 6.5 hp - you'll catch up with horseradish, there's still a need for an adapter bar for the base since the holes don't match

The most important thing is that after replacing the engine, do not turn the throttle all the way out of habit, otherwise the matter will quickly end with replacing the chains in the gearbox.

father1969, I think you were selling a walk-behind tractor? Have you changed your mind? Have you decided to replace the engine?

The above is correct. pulley for 2+ streams. those. the design does not change - the engine doesn’t care how I change gears after it. That's why it's a motor, not a transmission.
You just need to look at the diameter of the shaft and the hole in the pulley and the method of fastening - there is a key on the shaft without cones.
and a transition frame for the engine for attaching to the frame.
all this was purchased at one time together with the engine.
The original engine constantly required minor repairs and once a season something iron (elbow, piston, rings, connecting rod). The cheapest Chinese one plowed without problems for 5 years on a walk-behind tractor and has now been working as a drive for a wood splitter for 2 years.

17.2.2014, 11:59

17.2.2014, 19:22

Guys, everything is correct, both about the double-groove pulley and about the installation kit, only in the MB-1 the speeds are switched not in the gearbox, the design of the MB-1 gearbox has 2 forward speeds and one neutral, the reverse speed is activated through the second belt and an additional roller that rotates the belt and gear pulley in the opposite direction. I had already installed the engine, installed the pulley on the engine shaft, and then “on the third day the keen eye noticed” that the walk-behind tractor would not go back without additional intervention and installation of an additional roller. If there was an MB-2, there would be no questions, there the speeds in the gearbox are switched and the torque is transmitted through one belt. On the MB-1, to go backwards, you need a second belt...

19.2.2014, 16:17

You are saying something wrong. Or they were clever. Or what kind of iron is missing in the kampote that is being collected...

There, the belts are simply hung in a tricky way - one is around the pulley (forward), and the other is not put on the pulley but on the pressure roller, and is pressed against the top of the pulley - eventually spinning in the opposite direction.
Here, I took another picture and painted the belts in different colors.
So, you can stick absolutely any engine inside the pulley, as long as the diameter matches. At least from a Boeing gas turbine.
and it will go both forward and backward - the speeds are realized (in this case) in the clutch, which is not part of the engine.

Oh this miracle! The second photo is actually 1/3 open, but the photo is basically enough to finish what we started. Everything is correct, part of the iron is missing - a bracket with the letter “G” and a second roller, now I’m done, I assumed this, but I had no idea how to do it, I couldn’t find a photo on the Internet.

Well, the second photo has opened!!!

It’s not entirely clear about the second roller: is it only supported by an L-shaped bracket or is it attached to the engine on the other side?

19.2.2014, 16:57

I marked the L-shaped one in blue, it sits only on the axis (red) and is not attached to the engine in any way and has nothing to do with it. And it is pulled by a rod (green) behind the driven pulley through a powerful spring (more powerful than the one on the forward roller)