The mole's engine is two-stroke. Mole cultivators: review of model characteristics

The agricultural sector includes a fairly extensive range of all kinds of work, the implementation of which requires considerable effort.

And if previously there was no particular alternative to manual labor, then with the advent of partial automation in this industry, many opportunities have emerged to simplify these works, as well as increase their efficiency.

Small-scale mechanization means play an important role in this, among which it is worth highlighting walk-behind tractors and walk-behind cultivators, which have small dimensions, allowing them to show quite good mobility and maneuverability.

In our country, Russian equipment is very popular, which is characterized by an inexpensive price and quite acceptable technical data.

Many of the domestic walk-behind tractors were produced back in Soviet times, so they are well known to the majority of the population.

In particular, we are talking about the first serial unit, the production of which was launched in the USSR.

About the manufacturer

This will probably be surprising, but the plant responsible for the production of various modifications of the Mole walk-behind tractor was the OJSC Moscow Machine-Building Enterprise named after V.V. Chernyshev.

What makes this fact surprising is that this enterprise is one of the leading enterprises in the aircraft manufacturing industry, part of the United Engine Manufacturing Company (UEC). The company began its history in 1932, specializing in the production of aviation diesel engines and piston engines for aircraft.

Subsequently, production growth increased, which led to the production of turbojet engines at the very end of the 40s. The enterprise was actually defense plant No. 1 in the Soviet Union, because at the end of the 70s, virtually every fighter was equipped with an engine produced at this plant.

As for the production of Krot walk-behind tractors, the first project was developed for the enterprise at the very beginning of the 80s. Direct production and sales began a little later - in 1983.

At that time, this was a real breakthrough in small-sized gardening equipment, because there were practically no analogues to Moles.

The first model was called Mole MK-1, whose main job was cultivating the land. Subsequently, technologies were improved, which made it possible to significantly expand the list of potential works for which this walk-behind tractor is intended.

The Mole walk-behind tractor, the official website of the manufacturer of which is located at www.avia500.ru, is still popular in our country, which is explained by its low cost.

Specifications and prices

Today, Mole walk-behind tractors are equipped with engines from well-known brands. This circumstance is no coincidence, because factory engines caused quite a lot of complaints in their work.

In addition, they were quite capricious in operation - they had to be repaired quite often, and also take quite long breaks in work. However, the situation has changed thanks to the decision to use more powerful engines such as Greenfield, Lifan, Honda, etc.

This modernization took place painlessly, because the structure of the Mole walk-behind tractor is quite simple, which made it possible to install new engines on them without any special problems or design alterations.

It was the use of a variety of engines that made it possible to expand the model range of Mole walk-behind tractors.

The Mole walk-behind tractor, the technical characteristics of which we will look at a little later, has become even more competitive in this market segment as a result of such changes.

MK 1A

I would like to start the review of modifications with the predecessor of the first model of this unit - the Mole MK 1A walk-behind tractor, which is distinguished by more significant weight, as well as an ergonomic handle.

It is enough to purchase the necessary cultivator for your dacha, and the issue of weeding and plowing the land will actually be resolved without unnecessary labor costs on the part of humans. - This is an excellent alternative to manual labor.

Nowadays, a large amount of work is performed by various agricultural units, the presence of which brings significant relief to any farmer. By clicking on you will learn how to make a plow for a walk-behind tractor with your own hands.

Snowy terrain requires new types of transport, because ordinary cars are simply not able to move normally on such a surface. all about the BRP 800 snowmobile.

This device can not only plow land, but also perform a whole range of additional work:

• hay making;
• hilling and weeding;
• transportation work;
• planting and digging up potato tubers;
• means for watering beds, etc.

Naturally, this work is impossible without purchasing additional mounted and trailed equipment.

Mole MK 1A has its own varieties - series 01 and 02. They differ in that the first unit has only one forward gear, and the second has two - front and rear.

Technical characteristics of MK 1A:

• type of engine used - 2-stroke, carburetor;
• cooling type – air;
• fuel tank volume – 1.8 l;
• power indicator - 2.6 hp;
• engine brand - MMZ KOZ 501;
• the width of the processed strip is adjustable, from 350 mm to 600 mm;
• total weight – 48 kg;
• loosening depth – up to 250 mm;
• walk-behind tractor length – 106 cm;
• walk-behind tractor width – 81 cm;
• walk-behind tractor height – 130 cm.

The cost of this model is about 18 thousand rubles.

Motoblock Mole 2

The Mole 2 walk-behind tractor differs from previous models in that it is equipped with a 4-stroke engine, which can significantly improve the power traction of the device. In addition, the changes affected other working nodes:

• the chain gearbox has become more reliable and powerful;
• Adjustable steering column allows you to adjust the unit to the height of a particular person.

In addition to the walk-behind tractor itself, the package includes a coulter, tillers and operating instructions. This model has a modification - the Mole 2M walk-behind tractor, but there are no significant differences in their data.

Technical characteristics of Mole 2:

• type of engine used - 4-stroke, gasoline;
• cooling type – air;
• power indicator - 6.5 hp;
• engine brand - Greenfield;
• the width of the processed strip is adjustable, from 400 mm to 600 mm;
• total weight – 68 kg;
• engine capacity – 198 cm3;
• gears – 1 forward/1 reverse;
• loosening depth – 25 cm.

The Mole 2 walk-behind tractor, the price of which is about 22 thousand rubles, is a reliable assistant in working in the garden. The use of attachments on the Mole walk-behind tractor allows you not only to care for the crop, but also to collect it in the autumn.

Motoblock 7 hp

Motoblock Krotov 7 hp Designed to work on the most difficult areas of land. This is facilitated not only by a fairly powerful engine, but also by the presence of large diameter wheels that provide sufficient maneuverability.

Specifications:

• type of engine used – 4-stroke, petrol;
• cooling type – air;
• fuel tank volume – 3.6 l;
• power indicator - 7 hp;
• engine brand – G170F;
• the width of the processed strip is adjustable, from 600 mm to 1000 mm;
• total weight – 98 kg;
• gears – 2 forward/1 reverse;
• loosening depth – 300 mm;
• walk-behind tractor length – 1700 mm;
• walk-behind tractor width – 1000 mm;
• walk-behind tractor height – 800 mm.

The cost of this walk-behind tractor varies within 30 thousand rubles.

The Krotov diesel walk-behind tractor is represented in its category by three models – WG 351, WG 352 and WG 353.

WG 351

Krotov WG 351 has the following technical characteristics:

• cooling type – air;
• power indicator - 6 hp;
• total weight – 120 kg;
• gears – 2 forward/1 reverse;
• loosening depth – 300 mm.

The price for such a unit is about 42 thousand rubles.

WG 352

Krotov WG 352 has almost the same equipment, but its difference from the previous model is that it starts with an electric starter.

Specifications:

• type of engine used – 4-stroke, diesel;
• cooling type – air;
• fuel tank volume – 3.5 l;
• power indicator - 6 hp;
• width of the processed strip – 1100 mm;
• total weight – 120 kg;
• gears – 2 forward/1 reverse;
• loosening depth – 300 mm.

The cost of this model is 46 thousand rubles.

Krotov WG 353 has the following technical data:

• type of engine used – 4-stroke, diesel;
• cooling type – air;
• fuel tank volume – 5.5 l;
• brand of motor used – WM168F;
• engine capacity – 418 cm3;
• power indicator - 9 hp;
• width of the processed strip – 1100 mm;
• total weight – 145 kg;
• gears – 2 forward/1 reverse;
• loosening depth – 300 mm.

The price for WG 353 is about 52 thousand rubles.

In principle, now there are no questions left, such as “how much does the Mole walk-behind tractor cost”? As we can see, the price is very different, the spread can be double the size. It all depends on what type of engine is used in the design, which determines the cost.

Mole walk-behind tractors will be the best purchase for owners of small gardens, as well as those who do not want to spend a lot of money on purchasing agricultural equipment.

User manual

The Mole walk-behind tractor is produced at factories in Moscow and Omsk. Omsk walk-behind tractors are produced under the Krot Om brand, but there is no significant difference between them, because the manufacturing technology is common.

Accordingly, the instructions for the Mole walk-behind tractor and the instructions for the Mole Om walk-behind tractor will be completely identical.

In this article we will not consider safety and operational measures, but will focus on some technical points.

The carburetor of the Mole walk-behind tractor is adjusted at idle speed and at maximum engine speed. Let's look at the specifics of setting the carburetor at idle:

• The carburetor has adjusting screws that control the quantity and quality of the fuel mixture.
• To adjust, you need to set a gap of 0.2 to 0.5 mm between the gear cover and the carburetor lever. Then, we rotate the screw responsible for the amount of fuel, achieving a decrease in speed.
• We also rotate the second adjusting screw, but in order to increase those very same revolutions. As soon as the revolutions reach the maximum, they will decrease.
• The whole procedure must be done several times.

The ignition system is also tuned. The Mole walk-behind tractor, the ignition of which is adjusted by external inspection and a certain list of manipulations, has a fairly standard design of internal components, so there should be no problems with their adjustment.

The ignition system is adjusted by measuring the gap between the electrodes, as well as checking the formation of a magneto spark. The gap should be no more than 0.6 mm, which can be measured using a special feeler gauge.

If everything is done correctly, the Mole walk-behind tractor will start up normally. The operating instructions provide detailed information regarding setup methods, with step-by-step instructions and illustrations.

In addition, additional spare parts are supplied with the walk-behind tractor, allowing timely not only adjustments, but also repairs. Here is a partial list of them:

• dog - 2 pieces;
• spark plug – 1 piece;
• gasket - one piece;
• belt - one piece;
• bolts and nuts (needed during assembly);
• washers - 3 pieces;
• retainer – 6 pieces;
• spring – 1 piece, etc.

Conclusion

The Mole walk-behind tractor is the brainchild of the Soviet automobile industry, which may indicate the reliability of its design. Of course, there are certain drawbacks, but a certain improvement in the configuration of the units allows them to compete with many similar devices.

The most important point of these walk-behind tractors is their wide price category, in which everyone can choose a specific unit that meets their financial requirements. As for the performance indicators, they fully satisfy the expectations of most farmers involved in agriculture.

People who have medium-sized and large-sized summer cottages, as well as people whose garden requires a lot of effort to cultivate, often suffer from a lack of strength. After all, every person is built differently, and not everyone is able to dig up the area of ​​their plot alone. For this reason, back in 1983, Soviet engineers designed the first model of the Krot motor cultivator.

More than two decades have passed since then, but constantly improving models of the Mole walk-behind tractor are still in demand on the market.

1 Description of the motor cultivator

As in any other walk-behind tractor, the “heart” of the entire structure is the internal combustion engine (ICE). In motor-cultivators (MK) "Mole" it is two-stroke, carburetor and, taking into account the features of fastening to the frame, it is equipped with forced air cooling.

The output shaft of the gearbox is connected to the DVG via a V-belt transmission. One of the parts is put on these shafts: or wheels (for more details, see the section “Alternative models”). The gearbox itself is also attached to the frame, which, by the way, consists of two half-frames.

Motor cultivator "Mole"

From the same gearbox there are two handles that serve to control the MK - they are of a tubular type. These handles contain the so-called controls. With their help, the owner of a motor cultivator can control the speed, clutch, or, if its modification has such a function, reverse gear. The extreme part of the walk-behind tractor is a bracket used to install additional accessories on it.

Transferring the device from one place to another in the off position is carried out using lifting wheels. When turned on, when the “iron horse” is doing work, the wheels must be raised.

1.1 Technical characteristics and device

The weakest part of the first versions of the MK was, and the owners of these models complained about a lack of performance. Now this problem, due to development and cheaper production, has been solved, and the MK has a single-stroke engine with a displacement of 60 cubic centimeters and a power of 2.6 horsepower. The maximum number of revolutions is achieved at 5000-6000 per minute.

The engine is started manually(using a rope), while the starter is not removable. The carburetor installed in the MK-2 is marked K-60V, the air cleaner is made in a dry version, it also has a replaceable filter element, which also simplifies the use of the tool. Category A-76 gasoline is used as fuel for DVG; gasoline is mixed with M-8B1 (otherwise known as autol) in an approximate ratio of 20:1. The tank volume is not very large - only 1.8 liters, however, this is enough, since the engine is not the most demanding.

Engine of the Mole walk-behind tractor

A single-stage gearbox (not the main one) of the gear type uses the same oil (M-8B1) as a lubricant. The Mole 2 walk-behind tractor is used in the passive position when it is turned off. To turn it on, use a handle with a characteristic movement, like on a motorcycle. When the clutch is engaged, the V-belt is tensioned so that it does not slip, after which torque is transmitted.

The main gearbox has a two-stage structure (consisting of gears and a chain), and uses transmission oil marked TAD-17 as a lubricant.

In total, the characteristics of the MK are as follows:

• engine (60 hp, 2.6 hp, 5000-6000 rpm);
• carburetor (K-60V);
• fuel (gasoline);
• oil M-8B1 (for single-stage gearbox);
• oil TAD-17 SAE85W90 (for the main gearbox);
• tank volume (1.8 l);
• non-removable starter (manual);
• main reduction (two-stage);
• reduct. in a block with a motor (single-stage).

1.2 Review of the “Mole” motor-cultivator

1.3 Alternative models of the MK-2 walk-behind tractor

The first version of MK-1 (Mole walk-behind tractor) was created for a narrow specific application. It was a milling type cultivator. However, the rapid development of MK led to the emergence of alternative models with additional equipment. In particular, the device had a weeding knife, a plow and a mower with a cutting element.

Subsequent modifications, due to the large speed, were either equipped with a gearbox with an additional reverse gear, or the engine was replaced with an imported one. This is how an alternative engine for the Mole walk-behind tractor appeared. The variety of models is enriched by the presence of versions with a different carburetor design, gas tank, etc.

But the abundance of “crossed” versions of motor cultivators does not end there, and reading reviews, you can find out that there are MKs designed by enthusiastic owners, where they even install electric motors, and the standard replaced DVG is used for other “inventions.”

2 Type of work for the cultivator, additional equipment

The narrow focus in the use of the first versions of the motor cultivator is not one of its distinctive features, since using the Mole Motoblock, you can perform a huge amount of different types of work. For example:

and much more. So, for example, during the operation, metal wheels are put on the device (the plow is purchased separately). Using the same wheels and hiller you can (oddly enough) hill up potatoes. In addition to all of the above, with the help of a coulter it is possible to use a machine for weeding.

It can be concluded that MK-2 is as unpretentious as possible for different types of work. This is evidenced by the large amount of additional equipment that is sold for the walk-behind tractor.

2.1 Advantages and disadvantages

When discussing the shortcomings of this device, the first thing I would like to mention is the low-power engine, the volume of which could still be a little larger. Also, the “open” design system is designed in such a way that the MK often and heavily gets dirty during operation, especially in places where dust and dirt should not get into. And the last thing that can be said in a negative way is the price. Taking into account the instability of the currency, such a device will cost the buyer more than 22,000 rubles, which, of course, is very expensive.

Everything that can be said about this walk-behind tractor further is exclusively positive in nature and undoubtedly relates to the advantages of the device.
First, these are, in general, decent characteristics for such an instrument. The good news is that there is virtually no plastic in the design of the device - it is made of durable metal. At the same time, it is easy to use and has the power to handle a variety of jobs. "Mole" is easy to repair and reorganize. Replacing the engine or adding something of your own to the car will not be difficult.

Walk-behind tractor "Mole" with mower

At the same time, the standard design is always sufficient for everyday use, which means that the “Mole” motor-cultivator works on the “take it out, turn it on and use” principle. I would like to draw attention to the fact that this is a machine developed in Russia, which means that finding engines for the Krot walk-behind tractor and all the parts for them is very simple and, most importantly, inexpensive.

Undoubtedly, the Krot motor cultivators have more advantages than disadvantages, which allows us to judge them as good devices.

The Mole motor-cultivator became one of the first domestic products of small-sized agricultural machinery, in general the first motor-block, the mass production of which was organized in our country. From 1983 to this day, Krot motor cultivators have been produced at a number of machine-building enterprises from Moscow to Omsk, and in the 2000s - also at Chinese plants and factories. During this time, how has the walk-behind tractor proven itself in the hard-working hands of summer residents, gardeners and farmers? What are the features of its design, advantages and disadvantages? How is “Mole-2” different from “Mole-1”? Read on.

The specific purpose of the “Mole” motor-cultivator is to perform a wide range of agricultural work on soil cultivation. In summer cottages and household plots, in vegetable gardens and farmsteads. The owners of these small “lands” know from experience that digging them up by hand only requires a significant investment of time and physical effort. And the Mole walk-behind tractor is designed to save time, energy and health of its owner.

This small (both in size and power) agricultural technology is used primarily for loosening, leveling, and harrowing land on small (up to 0.1 hectares) plots of land. The instructions for the Mole walk-behind tractor indicate that it is intended for shallow (up to 25 centimeters) tillage (milling without turning the layer) of soil; its loosening, harrowing, leveling, weeding between rows and other similar work “on personal plots, vegetable gardens and garden plots with a cultivated area of ​​0.04 to 0.1 hectares).”

The main tillage operations are carried out using the working part of a motor cultivator - a milling cutter (rotors with specially shaped knives). Torque from the engine through a V-belt drive, gears and sprockets with a chain is transmitted to the gearbox shaft with rotors mounted on it. When rotating, the rotor knives cut off layers of soil, crumble and mix them, while simultaneously causing the forward movement of the motorized cultivator.

Compared to a plow, a milling machine better loosens the soil, crushes the roots of weeds, and evenly mixes organic and mineral fertilizers with the soil throughout the entire depth of cultivation. Manufacturers assure that the use of the Mole motor-cultivator is possible even on heavy soils and when cultivating virgin lands.

Additional attachments significantly expand the scope of application of the Mole walk-behind tractor. In particular, it can be used to carry out inter-row weeding; hilling potatoes; mowing the grass.

The Mole walk-behind tractor can also be used for pumping water from open reservoirs and containers. To do this, a pumping unit is installed on its frame, connected by a V-belt drive to the engine. And the V-belt drive is removed from the traction gearbox. The MNU-2 pumping unit used for this work, of course, must be purchased separately.

The “Mole” can also be of some use for transporting cargo weighing up to 200 kg on a small-sized trolley “TM-200” with a rotary coupling device. Rubber-coated wheels are put on the output shafts of the gearbox.
“Mole” is relatively easy to handle, does not require a large storage space, and its low weight and dimensions make it easy to transport.

Description of the design of the Mole walk-behind tractor

The frame, consisting of two half-frames, is bolted to the gearbox. Tubular cultivator control handles and a bracket for installing additional attachments are located at the rear of the walk-behind tractor. The handles contain controls for engine speed and clutch (on the Krot-2 modification, reverse gear is also engaged).

The output shafts of the Krot gearbox are equipped with soil cutters with a diameter of 320 mm for plowing the soil, weeding or wheels (for working with a hiller (or plow, as well as for operating a cultivator with a trolley). An internal combustion engine is attached to the frame, connected by a V-belt transmission to the input shaft of the gearbox.

The fuel tank is located on top. Lifting wheels are used to roll the cultivator, but during operation they must be raised or removed.

The Mole walk-behind tractor works according to this principle. The rotating motion is transmitted through the V-belt to the gearbox, and then to the two output shafts. After engaging the clutch, the belt is tensioned, driving the gearbox shaft. During idle operation, the clutch is disengaged.

The gear shaft, equipped with cutters - rotors with special knives, rotates and cuts off layers of soil, simultaneously crushing and mixing it. Thus, with progressive movements, the “Mole” makes its way forward.

Directly when purchasing a walk-behind tractor, the set includes four cutters that are installed on different sides of the gearbox shaft. There is also the possibility of using six cutters at once. The depth of loosening will depend on the length of the attached coulter.

To ensure that the walk-behind tractor does not get stuck in place, “burrowing”, or that it, on the contrary, does not “run along the surface” of the earth, rising to the top, the operator needs to adjust the depth of cultivation throughout the work. Thus, using the handles of the “Mole” it is necessary to periodically press it into the soil, or, conversely, lift it.

Technical characteristics of motoblocks “Krot” and “Krot-2”

• Overall dimensions in working position: Length: 1000-1300 mm; Width: 350-800 mm; Height: 710-1060 mm.
• Working width: from 350 to 600 mm.
• Diameter of cutter (rotor with knives): 320 mm.
• Weight (without fuel mixture in the tank): 51.5 kg.
• Tillage depth – 250 mm;
• Milling productivity is 150-200 square meters per hour.

The classic Krot engine is a single-cylinder, two-stroke carburetor, with forced air cooling.

The working volume of this engine is 60 cubic centimeters. Power – 2.6 horsepower, or 1.91 kW (at 5500-6500 rpm). Starting the engine is manual, carried out with a matusk rope, the starter is non-removable.

The latest models of the Krot-2 motor-cultivator are equipped with more powerful 4-stroke engines made in China. The single-cylinder GreenField GX series engine has an overhead valve arrangement and a piston with a cast iron liner. The working volume of such an engine is 198 cubic centimeters.

The carburetor on the MK-1 Mole walk-behind tractor is the same as on the Sh-50 or Sh-52 engines of the popular Soviet mopeds “Riga”, “Verkhovyna” or “Karpaty”: brand “K-60V”. By the way, a large number of other parts from Soviet mopeds were used in the design of the Krot engine. The Krot-2 walk-behind tractors have not only an engine, but also a different carburetor - the K41K brand.

The engine air cleaner is dry, with a replaceable filter element. The older generation remembers that in the USSR a collapsible oil filter was produced for Zhiguli cars, on which the same filter element was installed as on the air filter.

The Krot engine runs on low-octane gasoline A-76 (or A-80 in post-Soviet times), mixed with M-8B1 motor oil (Avtol), in a ratio of 20 to one. The volume of the walk-behind tractor's fuel tank is 1.8 liters.

Ignition is an electronic contactless magneto “MB-1”, as on the Druzhba and Ural chainsaws common in the USSR. Spark plug "A-17B". However, even with the “A-11” spark plug, the cultivator engine operates stably, carbon deposits do not form on the spark plug, and glow ignition is not observed. The average fuel consumption (for the Krot-2 walk-behind tractor) is 0.96 l/kW per hour.

Transmission

The engine of the Mole walk-behind tractor is made in a single block with a single-stage gear reducer (motor transmission). The Krot-2 motor cultivators also have reverse gear. Lubrication of the motor gearbox is “M-8B1” engine oil (It is also acceptable to use “TAD-17” transmission oil (SAE 85W90).

There is a pulley on the output shaft of the motor gearbox. Through a V-belt drive, torque is transmitted to the pulley of the main gearbox.

The walk-behind tractor's clutch is always disengaged and is engaged with a handle, like on a motorcycle or moped. When the clutch is engaged, the V-belt is tensioned, its slipping along the pulley is eliminated, and torque is transmitted. The main gearbox is two-stage (chain and a pair of gears). Lubricant - transmission oil "TAD-17" (SAE 85W90).

During pre-sowing tillage:
Contrary to popular belief, the MK-1 Mole walk-behind tractor does not plow the land, but cultivates it (which is reflected in its name: motor-cultivator). That is, it loosens and levels its top layer.

Soil cutters are mounted on the output shafts of the gearbox; the transport wheels are raised, a coulter is attached to the bracket, acting as a brake and regulating the depth of processing. The cutters are the working body and, at the same time, the mover of the Krot motor cultivator.

The walk-behind tractor is equipped with a set of cutters (two internal and two external – respectively: “right” and “left”). When developing complex (virgin and fallow) lands, it is recommended to use only internal cutters.

On relatively light (horticultural) soils, it is permissible to additionally use a third set of cutters (purchased separately). With six cutters, despite the increased load, the Mole motor-cultivator works well, and is even more stable, without tending to “burrow” into the soil.

But the MK-1 Mole walk-behind tractor can no longer handle eight cutters. More precisely, it will pull, but with great difficulty - with overload and overheating of the engine and the risk of breaking the handles. Therefore, it is not advisable to overdo it with cutters. You can try and plow the land; mounted plows for walk-behind tractors are available for sale. The more powerful Krot-2 is capable of more or less satisfactorily coping with this task.

Initially (in 1983), the MK-1 Mole was released as a single-purpose agricultural machine - a “milling-type cultivator.” A number of additional attachments (weeding knife, hilling plow, mower with segmented cutterbar) were developed for the Krot in subsequent years.

As a result of these additions, the motor-cultivator moved into the category of walk-behind tractors, and became on a par with classic walk-behind tractors - such as the popular MTZ-0.5.
When weeding:
For inter-row weeding, it is necessary to install L-shaped weeders on internal cutters instead of soil cultivation knives. And in place of the external cutters, install plant protection disks (purchased separately).

When hilling potatoes:
Instead of soil tillers, metal wheels with lugs are installed (purchased separately). Instead of a coulter, a potato hiller is installed (purchased separately).
When digging up potatoes:
Instead of soil tillers, metal wheels with lugs are installed (purchased separately). Instead of a coulter, a potato digger is installed (purchased separately).
While cutting the grass:
To mow grass for fodder and make hay, a special mower is attached to the front of the cultivator (purchased separately). Wheels are installed on the output shafts of the gearbox. The mower is connected to the engine by a V-belt drive. For this purpose, there is an additional pulley on the engine output shaft.
When pumping water:
To pump water from open reservoirs, you can install a pump connected to the engine by a V-belt drive on the Krota frame. In this case, the V-belt drive must be removed from the traction gearbox. The MNU-2 pumping unit is also, of course, purchased separately.
For cargo transportation:
When working with a small-sized trolley, the “Mole”, of course, crawls like a turtle. However, in certain situations it still helps: it’s still better than carrying sacks of potatoes on your shoulders.

So, the “Mole-2” modification received a gearbox with reverse gear and a more modern, powerful and productive four-stroke Chinese engine. Other design features of the next “Mole” model: the presence of a new improved carburetor, a centrifugal crankshaft speed controller and a new air filter.

Providing the Mole walk-behind tractor with a reverse gear improved its performance in shallow areas, as well as when operating the MK with additional attachments: a trolley, a mower, etc. And the new engine contributed to an increase in productivity, while simultaneously reducing operating fuel consumption, reducing noise levels, and increasing working life. Some manufacturing options are possible, slightly differing in the shape or design of the air cleaner, carburetor, fuel valve, gas tank and other parts.

In addition to official modifications, there are also homemade “variations on the “Mole” theme, made by the owners themselves. Some craftsmen even install electric motors of various designs on Krot motor cultivators. Electricity is supplied via cable. And the Chinese have long liked the design of the Mole motor-cultivator. For several years they simply produced an exact copy of it at their enterprises, and then they also set about improving it.

With the help of Krot cultivators, summer residents and plot owners plow, weed the ground, and hill up potatoes. The machine loosens, mixes, and saturates the soil with oxygen. The processing depth varies from 12 to 25 mm depending on the model. The knives are designed for cutting and grinding the surface soil layer. The unit is simple and convenient to operate.

Features of the motor cultivator

All models of Krot cultivators have a similar design. The machines are equipped with a gear-chain reducer, frame, handles, and a bracket for connecting equipment. An engine is mounted on the frame, communicating with the gearbox shaft through a transmission.

Mills (knives) cultivate the soil at a depth of up to 25 cm. To expand the functionality, additional attachments are provided: a cart, a pump or pump, a mower and other equipment.

The levers present on the handles are used to change the clutch and engine speed. New models can be equipped with a reverse/forward switch. For rolling, simple or rubberized wheels are provided. The wheelbase can be raised or removed.

Engine characteristics

Mole cultivators are equipped with single-cylinder, two-stroke, air-cooled engines. There is a dry air filter and a non-removable manual cable starter. The ignition system is contactless.

The Krota engine has the following characteristics:

• working volume– 60 cm 3 ;
• maximum power– 4.78 kW;
• number of revolutions 5500–6500 per minute;
• fuel tank capacity– 1.8 l.

Gasoline mixtures with a low octane number and motor oil (20:1) are suitable for refueling.

Transmission

The engine and transmission of Krot cultivators are combined into one system. The gearbox is designed for one gear and is driven through a pulley and V-belt transmission. The clutch is pressed using a handle like a motorcycle.

Modifications of Krot cultivators

Modernized versions of the Mole are equipped with a reverse gearbox. Cultivators may have a modified carburetor, gas tank, or air cleaner.

Modern units are equipped with two- and four-stroke imported engines. The model range includes various electric motors operating from the network. Electric motors are suitable for industrial greenhouses as they do not produce toxic emissions.

There are three main categories of Krot cultivators:

• M(compact);
• MK(low power);
• DDE(powerful).

Technical characteristics of the MK series

MK is a series of low-power, medium-sized units sold in an affordable price category.

Technical characteristics of the motor-cultivator "Mole" MK

The MK-1A modification cultivator has a power of 1.9 kW and an engine capacity of 0.6 liters. The working life of the machine is 400 hours. The fuel tank holds 1.8 liters. (mixture of oil and AI-76, AI-80). The unit consumes up to half a liter per hour.

DDE and V700II Specifications

Mole cultivators DDE are in demand among gardeners due to their reliability and power. The model range includes varieties:

• "DDE 1" with four-stroke single-cylinder Honda engine, air-cooled, skid plate;
• "DDE 2" with two-stroke Honda engine, additional gear to facilitate earthworks;
• "V700II"– a series of machines equipped with a domestically produced engine.

Technical indicators of DDE and V700II:

Characteristics of the motor cultivator "Mole M"

The M category cultivation unit is compact in size and has a front wheel for transportation. The machine is equipped with an imported engine and knives (cutters).

What kind of work is the “Mole” cultivator intended for?

The universal cultivator is capable of solving a variety of agricultural tasks with additional equipment:

• plowing land (with 2–3 sets of cutters);
• inter-row weeding (special tools in the shape of the letter “L”, disks for protecting cultivated plants will be required);
• hilling, digging up potatoes (wheels with hooks for soil are attached, a hiller or digger is installed, depending on the type of work);
• grass cutting (mounted mower, wheels);
• pumping water from a reservoir (pump MNU-2);
• transportation of goods up to 200 kg (rubber wheels, TM-200 trailer).

“Mole” models are used for work on farms, in subsidiary plots, on private plots, cottages, and vegetable gardens.