Mole cultivator oil change

The first attempt to create a Soviet walk-behind tractor, which was crowned with success - “Mole”, has an almost inexhaustible resource of work and versatility.

Put into serial production in 1983 , the walk-behind tractor is primarily intended for plowing the soil. But, with the use of additional equipment, the device is capable of planting and digging up ripened potatoes, making hay, pulling a two-hundred-kilogram cart and serving as a water pump.

Kickstarter repair on a walk-behind tractor

The most common cause of hand kick failure is unbent spring mounting points.
Sometimes there are times when you need to replace the starter cord. To find out the true cause of the kickstarter failure, you need to disassemble part of the walk-behind tractor. Before you start repairing, you need to get a diagram of it, which you need to rely on when disassembling. So let's get started:

Remove the kickstarter block.
In front of you there will be a drum, in the center of which there is a washer; you need to unscrew it.
Next, we remove other fasteners and carefully check all the parts.

What types of kickstarter failures can occur:

reeds do not work;
the cord is broken;
the hook in the center of the reel is broken;
one of the ends of the spring was bent.

If the cord is broken, it must be replaced with a new one. There are 2 hooks at the ends of the ring spring. If one of them does not have one, you need to heat the metal and bend it with a hook. It is also possible that the spring ring can be replaced completely.

How to make and properly equip reverse speed on a Mole walk-behind tractor?

Let's take a pulley from the Volga, for example.
Unscrew the nut and install the extended nut.
An extended nut is used to tighten the primary pulley, which is standard.
Then we screw the bolts into this nut, and thus the second pulley from the Volga is pressed.
We use a pressure roller from a timing belt tensioner of some foreign car.
We attach 2 springs and a cable.

This is basically the whole scheme of such a design. It is worth noting that even attachments like a plow will not interfere with the rear speed, and with any canopy the traction will be excellent, be it a plow or a rototiller.

Reverse speed at home

Reverse speed on the “Mole” walk-behind tractor is not present in all models . Sometimes it even depends on where the unit was produced - in Moscow or Omsk. Fortunately, craftsmen have come up with a simple way to improve the Mole walk-behind tractor. Modernizations come in different forms.

Fans of DIY improvements may be interested in a homemade grain crusher.

Here is one of the recipes for how to make reverse gear on a “Mole” walk-behind tractor. The nut that holds the pulley of the agricultural machine is unscrewed. We string a pulley next to it from, for example, a Volga. We tighten the nut.

In the design of the pressure roller we use a timing belt from any foreign car. And, in fact, the switch in the front of the walk-behind tractor is a small metal bar connected to the entire pressure roller mechanism. The bar is attached to two springs and a cable runs from it to the switch handle on the handle.

Design

The design of this model is so primitive that some craftsmen are trying to assemble a Mole cultivator with their own hands. The frame consists of two half-frames bolted to the gearbox. At the rear of the walk-behind tractor there are tubular control handles and a platform for installing attachments. Engine and clutch speed controls are located on the handles.

Soil steel cutters are fixed on the output shafts of the gearbox. There are four of them in the basic versions, but there are options that work with six cutters. Their diameter is 320 mm, which allows you to cut through the ground to a depth of 25 cm. Considering the main purpose of this walk-behind tractor, this size is quite justified. The cultivator does an excellent job of plowing and removing small weeds.

The internal combustion engine is mounted on the frame of the Mole cultivator and connected to the input shaft of the gearbox via a V-belt transmission. The engine of the basic modifications of this agricultural machinery is the simplest - a single-cylinder two-stroke with an air cooling system. It is equipped with a dry air filter and a non-removable manual cable starter. “Mole” runs on gasoline or diesel. Engineers placed the fuel tank on top.

Improved versions are equipped with imported two- and four-stroke engines, which increases the endurance of the equipment when processing difficult soils. The model range includes devices with electric motors, which are in demand when processing closed greenhouses.

Regardless of the option, “Mole” is equipped with five oil seals that guarantee tight connections. This is one of the preventative measures for an engine that stops working if the seal is broken as a result of loosening.

Scope of application and possibilities of use

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.

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.

Models

Progress does not stand still and today quite modern modifications have been developed that have a fairly wide range of functions: “Krot-OM”, “Krot-2”, “Krot MK-1A-02”, “Krot-3”, and also "Mole MK-1A-01". Let us dwell on the description of the most popular models of Mole walk-behind tractors.

This is the smallest unit, equipped with a two-stroke carburetor engine with power parameters of 2.6 liters. With. Despite its size and low power characteristics, such a walk-behind cultivator can be used to cultivate fairly large plots of land; in addition, its low weight makes it easy to move the walk-behind tractor to any desired location. Such installations are most often used in greenhouses and greenhouses. The model does not have a reverse option and can only move forward, and in one single gear. Installation weight – 48 kg.

MK 3-A-3

This option is much larger than the previous one, its weight is already 51 kg, however, it can easily be moved in the trunk of any standard car. The unit is equipped with a highly productive GioTeck engine with a power output of 3.5 hp. With. The fundamental difference of this model is the presence of reverse and improved technical and operational properties, which is why working with such a device is much more comfortable and convenient.

MK-4-03

The unit weighs 53 kg and is equipped with a 4 hp Briggs&Stratton engine. With. There is only one speed, there is no reverse option. The motor cultivator has improved parameters for grasping soil in depth and width, thanks to which all necessary agricultural work is performed more efficiently and effectively.

MK-5-01

This product, in its design and operational features, is very similar to the previous one, differs in the same width and depth of grip, but the type of engine here is completely different - Honda, which is characterized by greater endurance with the same power.

MK 9-01/02

A very convenient motor cultivator equipped with a 5 liter HAMMERMANN motor. With. High productivity makes it possible to process even complex virgin soils with such a unit, and the dimensions of the device do not create any problems with its transportation and movement.

Model range: description and cost

The line of Mole walk-behind tractors is constantly expanding, and more and more advanced models are being produced. Production facilities are located in Omsk and in Moscow at the mechanical engineering enterprise named after V.V. Chernysheva.

Soil milling occurs without turning over the soil, which has a positive effect on its condition and the degree of oxygen saturation. These units are successfully used not only on plots of land, but also in greenhouses and greenhouses.

A feature of the entire line of cultivators and walk-behind tractors is the ability to replace the motor and install a new one from another manufacturer with better characteristics.

MK-1A

The model is equipped with a gasoline engine with a power of 2.6 hp. The small size of this unit and low weight (48 kg) allow it to be used in confined spaces. Maneuverability and the ability to cultivate to a depth of up to 25 cm are an important advantage. Reverse speed is not provided in this unit. However, this disadvantage is compensated by the possibility of using attachments and a working width of up to 60 cm.

Device parameters 130 cm*81 cm*106 cm.

Motoblock Mole MK-1A

KROT-2

A modification of the Mole 2 walk-behind tractor has a 3.6 hp Greenfield motor and a chain gearbox. The air filter has been improved, and the steering column has height adjustment. The weight of the unit is 68 kg, which allows the use of up to 6 cutters.

Models equipped with domestically produced engines have a shorter service life (about 400 engine hours), which causes low demand for such products.

The technical characteristics of this walk-behind tractor are as follows:

productivity – 150-200 sq.m. at one o'clock;
weight – 51.5 kg;
tillage depth – up to 25 cm;
cutter diameter – 320 mm;
working width: minimum – 350 mm, maximum – 600 mm.

Motoblock Krot-2

MK-4-03

This motor cultivator has an American-made Briggs&Stratton motor with a chain gearbox and a power of 4 hp. Belt clutch and two speeds - forward and rear - allow you to cultivate the soil to a depth of up to 30 cm with a working width of up to 90 cm (minimum width 350 mm). The model copes well with attachments and is suitable for various agricultural work.

The weight of the product is 53 kg, the steering column has only one position. Cultivator parameters 1300x810x1060 mm.

MK-5-01

The technical characteristics of this modification are the same as the previous model. The main difference is the presence of a 4 hp Honda GC135 engine.

The walk-behind tractor has a chain gearbox and a belt clutch, as well as rear and forward speeds. The weight of the device is 53 kg, its steering column has only one position. The cultivation width ranges from 34 to 90 cm. The dimensions of the mechanism coincide with the MK-4-03 model.

Motoblock Mole MK-5-01

MK 9-01/02

This is a modern modification with a powerful motor (5.5 hp) made in Germany – Hammerman CF168F. This unit is capable of cultivating virgin lands and is not difficult to install attachments.

Weight and other parameters are the same as the previous model.

User manual

In the operating instructions supplied with the Mole walk-behind tractor, the manufacturer indicates the following information:

setting up mechanisms and troubleshooting;
safety rules when working with the unit;
features of using the device;
information about the parameters and structure of the agricultural machine.

Reliable and long-term operation of the walk-behind tractor depends on proper and regular maintenance, as well as on competent and constant care. The user needs to perform simple manipulations to care for the mechanism. In this case, the cultivator can last more than 10 years.

As fuel, you must use a mixture of AI-80 or AI-76 gasoline and M-12-TPTU or M8V1 oil.

The operation of the walk-behind tractor depends on proper and regular maintenance.

The oil level must be constantly monitored and, if necessary, replenished to the required amount

After each use of the cultivator, it is important to clean it from dirt. At the end of the procedures, the agricultural machine is wiped dry and its working units are lubricated

First start

Correct startup of the walk-behind tractor when first used determines its future service. This process is called break-in and lasts at least 15 hours

Before and after break-in, it is important to check whether the level of working fluids corresponds to the norm and add, if necessary, to the required amount

The running-in process consists of going through the following stages:

Checking the units, components and motor for functionality. Check the gearbox thoroughly.
Determining the oil level in the crankcase. Running the engine dry will cause it to seize.
It is not recommended to load the walk-behind tractor during the running-in period. The best option is idling. In extreme cases, the load on the device should not exceed 50% of normal.

If all the requirements are met and the first launch was successful, then we can confidently say that the parts of the mechanism have gotten used to each other well

This is an important condition for the further successful operation of the cultivator.

The oil level in the walk-behind tractor must be constantly monitored.

Service

Maintenance of the walk-behind tractor involves regularly performing the following operations:

adjusting;
washing;
fastening;
control;
lubricants;
gas stations and other works.

The frequency of such manipulations ranges from 5 hours to 1 time per season. Let's consider the classification of periodic work by frequency of execution.

Every 5 hours the following manipulations are carried out:

cleaning the area around the muffler, the entire cultivator, wiping it dry;
cleaning the outer surfaces of the cylinder head and the cylinder itself;
replacing oil in the motor gearbox (after the first 5 hours of operation);
inspection of fastening connections of the chassis and engine;
monitoring the oil level in the chassis and gearbox;
monitoring the tightness of chassis and engine gearboxes, carburetor, gas tank and fuel line.

It is not recommended to load the walk-behind tractor during break-in

Every 25 hours or once a season:

V-belt transmission adjustment;
cleaning the air filter and monitoring its condition;
checking the fastenings of threaded connections of the chassis and engine using spare parts tools;
Changing the oil in the chassis gearbox.

Every 50 hours or every season:

cleaning spark plugs;
replacing the filter element in the air filter; this procedure can be carried out more often when working in difficult conditions;
Changing the oil in the engine gearbox (at elevated ambient temperatures, this is done more often - after 25 hours).

Every 100 hours or every season:

lubrication of control cables;
installing a new spark plug;
cleaning and lubricating the starter;
muffler cleaning;
changing the oil in the chassis gearbox;
cleaning the grooves of the piston rings, piston, cylinder head, and exhaust purge windows of the cylinder from carbon deposits.

Follow the instructions to prevent premature malfunctions.

Every 300 hours or every season:

flushing the gas tap and carburetor;
flushing the fuel tank.

Fuel consumption by Mole cultivators

Mole cultivators with two-stroke engines operate on a fuel mixture, which consists of AI 76 or 80 gasoline and M12-TP or MG-8A oil. The exact mixing proportions are indicated in the user manual. The mixture is best prepared in a dry canister for storing petroleum products. First, gasoline is poured into the container. Otherwise, the oil will stick to the bottom of the canister, which will complicate the process of preparing a quality mixture. Average fuel consumption – 1300 g/hp*h.

Models with four-stroke engines cause fewer problems for owners. The fuel is AI-92 motor unleaded gasoline, which does not need to be mixed with oil. At the same time, the average fuel consumption of such devices is noticeably lower - 530 g/hp*h.

" Note! For work at an altitude of more than 1500 meters above sea level, the use of low-octane gasoline is allowed. At the same time, the jets on the carburetor are changed to correct the composition of the air-fuel mixture.”

Technical characteristics of the Mole walk-behind tractor

The Mole walk-behind tractor is equipped with a two-stroke engine, a carburetor and forced air cooling. The engine and gearbox are attached directly to the frame. The output shaft of the gearbox is connected to the motor using a V-belt drive. 2 tubular handles extend from it to control the device. With the help of the latter, the clutch, speed and reverse are controlled, if the model has such a function.

The modification determines what characteristics the Mole walk-behind tractor has. All models have the following features in common:

Mole walk-behind tractors, the technical characteristics of all models of which are similar, have the following basic parameters:

How much to pour the mixture

The amount of water that is poured into the mechanism directly depends on a number of reasons, namely:

the volume that is specified specifically by the manufacturer;
advice regarding the amount of oil;
design features of the mechanism;
the amount of water drained from the device.

Taking all these aspects into account, you can choose the average value at which the device will work best. Usually, about 2 liters are poured into this part of the walk-behind tractor.

transmission water. To find a reliable amount of this component, you can take a wire 70 cm long, and then bend it and push it into the mechanism. Ultimately, at least 30 cm should be smeared on it (this is considered the norm). If the indicator is less, then you need to add fluid.

Fundamentally! If a service is being done, then you need to fill the fluid up to the level; otherwise, rapid wear of a part such as a gearbox will occur.

Device

The designers of the device made it as simple as possible. This, firstly, made it less vulnerable during operation, and secondly, it allowed people who were far from understanding the complex mechanisms to use it for their agricultural needs.

The dimensions of the “Mole” are approximately 1300x810x1060 mm, which simplifies its storage. Even a barn or garage will do. This makes servicing the Mole walk-behind tractor even simpler and more attractive.

The device is simple and consists of an internal combustion engine, frame, gearbox, bracket and handle. The removable wheels that are included in the kit will allow you to not make special efforts during transportation.

The mechanisms by which you can control engine speed, clutch and, in some models, reverse gear, are located on the handle. Attachments, such as weeding cutters or wheels, necessary when working with a plow, are provided for mounting on the gearbox.

Depending on the modification, the units are equipped with motors whose power reaches 6.5 liters. With. This makes the Mole walk-behind tractor a real assistant. The instruction manual is written in accessible language and does not omit any details.

For more information about the Mole walk-behind tractor, watch the video:

Design features

The structure of the Mole walk-behind tractor is determined by the presence of the following interconnected nodes:

Frame – consists of two connected half-frames. The structure is attached to the gearbox with bolts.
Internal combustion engine - is attached to the frame and is connected to the input shaft of the gearbox via a V-belt drive.
The attachment mounting bracket is located at the rear of the unit.
Milling cutters - are put on the output shafts of the gearbox.
Transport wheels.
Fuel tank (located at the top of the device).
Gearbox.
Controls are located on the handles of the cultivator.

The motor on the Mole walk-behind tractor from the manufacturer has forced cooling and is a two-stroke single-cylinder engine. It contains a non-removable starter, which is started by sharply pulling the cable.

The engine uses a dry type air cleaner, and the carburetor is similar in design to a moped, as on the “Karpaty” or “Riga” mopeds.

The engine for the Mole walk-behind tractor has a working volume of 60 cm cubic and is filled with A-76 gasoline, to which is added Autol engine oil (M-8B1) in the proportion specified in the instructions for this model (1:20-1:25). The factory equipment includes “A-17B” spark plugs; for stable operation and to prevent the formation of carbon deposits, it is recommended to replace them with “A-11” spark plugs.

The motor on the Mole walk-behind tractor has forced cooling

Some models of the Mole walk-behind tractor are equipped with Chinese four-stroke engines. The “native” cultivator engine lacks power, which affects the performance of the mechanism. The design of the frame allows you to replace the engine with a more suitable one, which eliminates problems in the future.

The best options for such replacement are the following models:

LIFAN 168FB with a shaft diameter of 20 mm and a power of 6.5 hp;
Patriot;
Honda GC 135;
Sadko DE-220;
Forza 160F.

When installing the engine, it is important not to exceed the permissible power. If you take an engine of more than 6.5 liters. With. the gearbox often begins to break due to excessive loads.

The size of the belt for the Mole walk-behind tractor is determined depending on the model. There are only three sizes suitable for models of this brand:

A13*900 – devices with an imported four-stroke engine;
A13*700 – suitable for the first modifications with the “original” engine;
A13*750 – suitable for most models with a gearbox pulley diameter of 150 mm.

The value “A13” means the belt profile, and the numbers 900, 750, 700 are its length.

Some models of the Mole walk-behind tractor are equipped with Chinese four-stroke engines

Standard cutters for the Mole walk-behind tractor have a diameter of 330 mm. They are mounted on the power take-off shaft. The choice of cutter model depends on the type of soil being processed. So, for medium and light soils, 1-2 pairs are used, and for virgin soil you will need three.

Before cultivating the soil, it is necessary to raise the transport wheels and install the coulter on the trailing bracket. It is he who will regulate the depth of soil cultivation. If the soil being processed is dense and heavy, then it is better to use crow's feet cutters, and for soils with less hardness, cutters with four or three blades are suitable.

Basic malfunctions and ways to eliminate them

To prevent premature malfunctions, you should follow the instructions specified in the operating instructions for the motor cultivator. Since all Mole models do not contain plastic parts, this increases their service life.

The most common breakdowns of this walk-behind tractor include:

clogging the space between the knives and the gearbox housing with clods of earth;
the handle and frame structure sometimes need reinforcement;
malfunction of the rope starter and piston group;
long periods of downtime (more than one season) render the cylinder, magneto, piston and other parts unusable.

How to start without a starter

Most often, a walk-behind tractor has a starter failure. The procedure is as follows:

Remove the starting device.
Find a cable or clothesline 1.5 to 2 m long.
Run the end of the cord into the hole to which the starter was mounted.
Wrap the cable around it, leaving 50 cm free.
Attach a small holder to the end of the rope.
Pull the cord sharply and firmly.
Repeat the previous action until the mechanism starts.

The method described above is dangerous, so it should only be used if absolutely necessary. It is recommended to purchase a new starter and replace the old one with it

If you do launch using a rope, it is important not to wrap it around your hand. Otherwise, a limb may be pinched by the engine and, as a result, serious injury.

Does not start

If the Mole walk-behind tractor does not start, you need to check the following parameters:

fuel flow into the carburetor;
control lever position;
inspect the spark plug;
make sure there is fuel in the tank.

It is necessary to check the flow of fuel into the carburetor if the walk-behind tractor does not start. It is important to determine why the Mole walk-behind tractor does not start; the reasons for this may lie in electrical ignition faults. To make sure of this, you should:

To make sure of this, you should:

Unscrew the spark plug. If it is dry, this is a sign that gasoline is not getting to the carburetor. It is necessary to dry the cylinder and bleed the engine when the spark plug is wet. If there is carbon deposits, it is necessary to clean it with sandpaper soaked in gasoline.
Check the ignition by turning the crankshaft. Normally, a bright blue candle should be visible.
Replace the spark plug with a new one if the problems persist.
Check that the gap between the coil and the ignition wire is correctly set.
Make sure the fuel hose is in good condition.
Check to see if the magneto and flywheel wires are tight.

Unidentified violations during self-check are a reason to contact a service center for professional repair of the unit.

No spark

The reason for the lack of spark is a faulty spark plug, namely:

carbon deposits - clean the candle;
a spark appears, but the engine does not start - oil or fuel has got onto the tip of the spark plug;
fuel fills the cylinder from time to time, which leads to the spark plug becoming wet and causing no spark;
spark plug failure;
A faulty O-ring is a possible cause of the malfunction.

Electric ignition malfunctions may also be the reason why the Mole walk-behind tractor does not start

Wedge

During operation, the engine may seize. This happens for the following reasons:

the formation of scoring on the connecting rod head due to a tight fit of the piston pin, improper installation of the part, or lack of lubrication;
insufficient oil supply;
connecting rod failure.

If you suspect jamming, you should disassemble the motor and ensure the integrity of the components and parts. Damaged or deformed elements must be replaced. Otherwise, the motor will quickly break down and become unmaintainable.

Spare parts and additional equipment

Attachments for walk-behind tractors Krot, Sadko, Don, Huter, Profi, Plowman, Champion are diverse. You can turn your assistant into a wheelbarrow tractor, use it for cultivating potatoes, as a lawn mower and as a water pump for watering your garden or garden. The number of parts is small.

If there is a need and desire, you can unhook the cutters from the unit and install wheels in their place. And attach a plow for the “Mole” walk-behind tractor to the device. It is installed in place of the opener. When cultivating soil, it works best in conjunction with cutters.

Milling cutters

Knives, as they are commonly called, cutters, are installed on the gearbox shaft . The cutters for the Mole walk-behind tractor rotate, while removing the top layer of soil, mixing and crushing it. Plus, thanks to these rotational movements, the device moves forward.

The standard configuration includes four cutters, but their number can be increased to six. How deeply the soil is loosened depends on the position of the attached coulter.

Oil seals

There are five oil seals for the Mole walk-behind tractor . Their task is to maintain sealing in connections. Their place is the crankshaft journal. The unit is equipped with a two-stroke motor, which is considered especially vulnerable if the seal is broken.

If the seals have become unusable, the engine will have difficulty starting, and the speed will be unstable when idling. These parts can only be replaced - their repair is not possible.

The pulley for the motoblock Mole, Carver, Husqvarna, Lifan 6.5, Salyut, Niva can be made of materials such as cast iron, steel, aluminum. Parts made of light alloys are considered the most attractive for installation If you are thinking of changing the engine on your “Mole”, then take care of purchasing pulleys.

You will need parts with an internal diameter of 20 mm, 19.05 mm, or 18 mm - depending on which motor you like.

The pulleys are located in the same plane with a deviation of no more than 1 mm.

Piston ring

The piston ring of the Mole walk-behind tractor is replaced if the gap at the joint of the rings is more than 1 mm . They are inserted one by one into the cylinder to a depth of eight to ten millimeters.

There is a whole so-called cylinder-piston group for the Mole walk-behind tractor unit. There are two piston rings in it. The material from which the rings and other parts of the group are made, as well as the accuracy of their fit, greatly influences the working life.

Here are the elements of this group:

Piston pin 11mm;
Piston rings 2 pcs. ;
Cylinder;
Piston.

To prevent the parts of the cylinder-piston group, and all the others, from drying out, do not let the walk-behind tractor stand idle for more than one season. This has a detrimental effect on the device, which, if used regularly, practically does not kill.

The magneto on the “Mole” walk-behind tractor, namely its coil, becomes inoperative when the equipment is left idle for a long time.

Chassis faults | Topic author: Pavel

Ivan (Eberwin) Why was the MTZ 1221 driving and suddenly stopped, you put it in gear, but it doesn’t go.

Pavel (Zared) Ivan, according to how you described, there may be 1000 and one reason.

Ivan (Eberwin) Nothing, no extraneous noise, the hydraulics are working, there is pressure to the box, the PTO is working.

Pavel (Zared) we check the transmission of torque from the engine to the transmission units (gearbox, transfer case, etc.) with the gear engaged (only carefully, without fanaticism) and identify which transmission unit receives rotation, but its transmission does not occur. I may be wrong, but you may well have something wrong with the transmission hydraulics, perhaps a valve has closed somewhere

I may be wrong, but you may well have something wrong with the transmission hydraulics, perhaps a closed valve somewhere.

Ivan (Eberwin) Thank you very much for the advice))) They usually cut off the shaft and coupling in between. And the transmission hydraulics work to turn on the front axle fluid coupling and lock, everything else is simply lubricated, since it is a simple synchronized gearbox.

Pavel (Zared) Ivan, thank you, I haven’t encountered this.

Pavel (Zared) come to us, we will be glad to see you (you can do it on your own terms, we’ll discuss it in PM if you want)

Artyom (Tennille) Tractor T16 MG why can the left rear wheel get up while driving, sometimes it spins, sometimes it doesn’t please tell me who knows the reason

Lekha (Renard) how to make brakes on an MTZ 80 tractor

Vadim (Bayyina) Please tell me who knows how to repair the clutch in a Zirka walk-behind tractor??

Modul (Akimi) Artyom, maybe there is something wrong with the differential?

Mikhail (Stacey) where can I get the fourth gear gear for kmz 012

Tolik (Jammad) bought a Don K700 walk-behind tractor yesterday, assembled it, poured Tad-17 oil into the gearbox and oil leaked out of the breather when plowing, why? Or is this not a breather and there should be a plug there? There is a 6 mm hole leaking out of the top cover of the gearbox.

Roman (Gaius) cannot be turned off at 12 strong, what is the reason?

Alexander (Ashakiran) What mini tractor do you recommend?

Vadim (Bayyina) the walk-behind tractor only drives when the clutch is depressed, what’s the problem?

Vyacheslav (Bramm) Question about the T-40AM tractor. When driving the tractor, the front axle suddenly turns on at any speed (without load), and a characteristic noise immediately appears when the tractor is loaded. We depress the clutch and move the reverse to the reverse position, move it back 1-2 meters, move the reverse to the reverse position (forward movement), the noise disappears. This often happens in the summer, but rarely in cool weather.

Tags: How much oil to fill in the gearbox of a mole walk-behind tractor

Repair instructions

Repairing the “Mole” walk-behind tractor is simple and quite possible at home. Just take some time to read the instructions and understand the circuit diagram of the device. Then you can repair the “Mole” walk-behind tractor with your own hands without much difficulty.

There are things that will help you repair the “Mole” walk-behind tractor with your own hands. Video is one of them. Craftsmen will clearly show how and in what sequence to repair equipment. Although the equipment is reliable, even it, due to its use in conditions of prolonged multifunctional work, can break down.

But it is also important to understand what caused the Mole walk-behind tractor. Repair instructions may not include video

The problem is the ignition. This, unfortunately, happens quite often in this brand of walk-behind tractors. The first thing to do is check the spark plug. To do this, unscrew it and carry out a visual inspection. If the spark plug is completely dry, this indicates that the fuel-air mixture is not entering the cylinder.
If it is completely wet, you should bleed the engine using a manual starter. This will dry out the cylinder. The spark plug is burnt - wash it with gasoline and clean it with fine sandpaper.
Malfunctions of the Mole walk-behind tractor may also be due to the fact that the spark plug not only needs to be cleaned, but needs to be replaced. This is the case if there is no spark.
If there is still no spark with the new spark plug, there is a possibility that there is no contact in the electrical circuit.
Ignition is also directly dependent on the condition of the gasoline hoses, the insulation of high-voltage wires or their connection. Take a closer look to see if the flywheel plates are touching the magneto's magnetic circuits. This shouldn't happen.
And, of course, check the air filter for contamination. By the way, even a dirty muffler negatively affects the performance of the unit.

User manual

The gasoline and electric cultivator Mole is a reliable and functional device, but its service life directly depends on compliance with the operating instructions.

There are a number of rules that must be followed when using a walk-behind tractor.

Maintenance

Since gasoline models operate by burning a fuel mixture and engine oil, it is necessary to adhere to the factory proportions of the components when creating the mixture. Otherwise, the engine will soon fail.

Reviews from owners on thematic forums emphasize that it is impossible to use analogues of the M-8B oil recommended by the manufacturer, since they do not have the required parameters.

Before starting and starting work, you need to make sure that the fasteners are tightened and check the functionality of the V-belt drive, reverse gear and operating systems. You should familiarize yourself with the fuel and oil levels, and, if necessary, evaluate the condition of the air filters.

During the first 15-20 hours, the equipment with installed attachments is run-in. During this period, operation of the unit at light loads is allowed, and plowing of the ground is carried out in 2-3 passes to a depth of no more than 10 cm.

The oil change in the power unit gearbox is carried out after 5 hours of operation, in the chassis gearbox - after 25 operating hours.

Further technical inspection includes basic maintenance including cleaning the machine from dirt and lubricating the working units on the Krot cultivator with special oils.

Preparation for storage

If the Krot 2 motor-cultivator will not be used for 2-3 months, it is important to get rid of the fuel mixture in the carburetor and perform simple maintenance. If the machine will be idle for a long time, place 70 cm³ of engine oil in the cylinder and turn the crankshaft with light movements

The surface of the mechanisms is wiped with a rag soaked in the fuel mixture.

Motoblock Mole. Guide - part 3

Tighten the fasteners, tighten the loose nuts.

To clean the wheel from soil, set a gap of 7.10 mm between wheel 23 and bracket “a”.

Install coulter 2 according to Fig. 5, securing it with a special bolt, nut and clamp.

6.2. Reactivation of MK.

To protect parts from corrosion, MK goes on sale preserved. Before starting to operate the MK, it must be reactivated in the following order:

Remove the hood 7 (Fig. 1). Wipe parts coated on the outside with protective lubricant with a clean cloth or rags soaked in gasoline.

Remove the suppressive resistance with the screen and high-voltage wire from the spark plug, and then unscrew the spark plug.

Install the MK with the spark plug hole vertically upward.

Using the starter, set the piston to the top dead center position.

Pour 50.60 ml of pure gasoline or fuel mixture into the cylinder through the spark plug hole and let stand for 1 - 2 minutes.

Place the MK in a horizontal position and crank the engine with the starter 6.8 times (until the cylinder cavity is drained). While cranking, you must press and hold the engine stop button in the closed position.

Wash the spark plug with gasoline, dry it and install it in place; install a suppressive resistance with a screen and a high-voltage wire on the spark plug, secure the hood.

Wipe with paper (rags) and rinse the instrument in gasoline or kerosene. Restore spare parts as needed.

6.3. Preparation of the fuel mixture.

During the running-in period (the first 15 hours of operation), prepare a fuel mixture of gasoline A-76 or AI-80 eq with oil M-12TP, AZMOL Start2T in a ratio of 25: 1, with oil MG-

Source

Description

The “Mole” motor-cultivator appeared in the early 80s of the last century and immediately gained popularity among rural residents and dacha owners. This is not surprising, because with the help of this agricultural technology, mechanized soil cultivation, as well as planting, care and harvesting, became possible.

Over more than 30 years of its existence, “Mole” has been modified more than once. Such parts as the engine, gearbox, handles, cutters, as well as other equipment (including attachments) were brought to perfection. Having gone through a difficult path of improvements, we no longer received the original motor cultivator, which has some limitations in operation, but a multifunctional motorized device, with which we can easily carry out the following field work:

plowing the soil;
cutting beds;
planting potatoes;
spud of plants;
weeding plants from weeds;
mechanized potato harvesting;
mowing;
irrigation;
transportation of bulk and piece goods;
snow removal.

In order to perform all of the above work, you need to acquire the appropriate tools. You can find out more in the article about attachments for the Mole cultivator on our website.

No matter how powerful your unit is, no matter how much you care for it, sometimes it still requires repair - the engine won’t start, the engine gets hot, or some other malfunction... To know how to repair a motor cultivator, you need to understand its structure.

common breakdowns

What machine components may require the operator's close attention?

motor;
magneto, ignition system;
carburetor;
gearbox;
air filter, etc..

Now let’s take a closer look at all the faults that can affect the performance of the unit, no matter what model it belongs to.

Engine

The main reasons that the “Mole” engine does not start are:

lack of fuel (or its low quality);
ignition problems discussed above;
the appearance of decompression and, as a result, piston wear and deformation of the exhaust valve.

In the first case, it is enough to simply fill in the required amount of fuel (a mixture of gasoline with M-8V autolom oil) and all problems will be resolved. In the case of a compression failure, you will have to completely disassemble the engine and replace damaged parts, and this could be a piston or an o-ring.

Deformation of the exhaust valve becomes another prerequisite for compression failure, which leads first to a loss of power of the Krot motor-cultivator, and then to starting problems.

To restore engine functionality, it is necessary to completely disassemble it. Having assessed the condition of the piston, replace it if necessary. We change the piston rings and exhaust valve. By examining the engine head, in particular the gas distribution mechanism, if there is carbon deposits, it cleans it. If structural elements are damaged, we replace them with a serviceable one.

Maintenance

What does maintenance mean? This is a series of measures that ensure proper operation and proper storage of equipment. Maintenance of the “Mole” cultivator means the following work:

washing;
cleaning;
lubricant;
control;
gas station;
control;
fasteners;
adjustment of all blocks and systems

Such work must be done as often as possible, especially if you have to work in unfavorable conditions.

Before starting the cultivator engine, it is necessary to check the presence of fuel, oil, etc. It is necessary to fill the mixture to a certain level, and if necessary, replace the fuel and oil. For cultivators, Avtol oil (M-8V) is used, which proved itself during the Soviet Union.

If it is difficult to get it, then you can use analogues:

10W-30 (do not use at temperatures above +27 degrees);
SAE 30 (do not use at temperatures below +4 degrees).

Adjustment work involves adjusting the clutch, reverse gear, carburetor, spark, etc.

Repair instructions

But it is also important to understand what caused the Mole walk-behind tractor. Repair instructions may not include video

The problem is the ignition. This, unfortunately, happens quite often in this brand of walk-behind tractors. The first thing to do is check the spark plug. To do this, unscrew it and carry out a visual inspection. If the spark plug is completely dry, this indicates that the fuel-air mixture is not entering the cylinder.
If it is completely wet, you should bleed the engine using a manual starter. This will dry out the cylinder. The spark plug is burnt - wash it with gasoline and clean it with fine sandpaper.
Malfunctions of the Mole walk-behind tractor may also be due to the fact that the spark plug not only needs to be cleaned, but needs to be replaced. This is the case if there is no spark.
If there is still no spark with the new spark plug, there is a possibility that there is no contact in the electrical circuit.
Ignition is also directly dependent on the condition of the gasoline hoses, the insulation of high-voltage wires or their connection. Take a closer look to see if the flywheel plates are touching the magneto's magnetic circuits. This shouldn't happen.
And, of course, check the air filter for contamination. By the way, even a dirty muffler negatively affects the performance of the unit.

Gearbox repair

The gearbox of the Mole walk-behind tractor must convert and transmit torque. It happens that the unit makes more noise and is not as loud as before. In this case, you may not have to touch the gearbox of the “Mole” walk-behind tractor. Repair may not be necessary.

Noise often indicates a lack of oil in the system. Top up, or better yet, replace it altogether. Oil may leak due to worn seals. Another option why the walk-behind tractor is noisy is that the fasteners of the units require that they be tightened, as they have become loose. You can do this yourself.

The Mole walk-behind tractor, over the thirty-odd years of its existence, has proven itself to be a simple, reliable and multifunctional device and a faithful assistant to summer residents and gardeners.

It is easy to repair without going to a workshop, many, even non-original, parts fit into it, and you can easily improve and modify it yourself.

On the other hand, a number of more modern and progressive walk-behind tractors have appeared, more powerful, economical and with more functions that are already present straight from the factory.

Source

The belt is an important detail

The V-belt for the motoblock Mole, Cayman, Patriot, Texas, Foreman, Crosser, Viking, Forza is one of the most necessary elements for the functioning of the unit. Its purpose is to transmit torque from the engine to the components. If you don’t know which belt is on the “Mole” walk-behind tractor, you have the classic A 750 version.

The size of the belt for the “Mole” walk-behind tractor in this case is easily determined - the marking corresponds to it in millimeters. Typically, Soviet and modern Russian designs use just such a detail. On the other hand, you need to check your Mole walk-behind tractor. Drive belt, its size can be 785 mm. Width – 12 mm.

The belt for the Mole walk-behind tractor is used only in this temperature range: -30°C to +60°C.

Just like the oil level, the condition of the V-belt must be constantly monitored . A crack, deformation, change in size - this important part must be changed immediately, since unstable operation of the belt will lead to breakdown or deterioration of the entire device. Replacing it is quite simple.

DIY cultivator repair

Self-repair of a Mole walk-behind tractor that is under warranty is not rational. Under such circumstances, it is better to contact a service center. If the warranty period has passed, you can try to fix the problem yourself.

The most common breakdowns are:

air filter contamination;
lack of spark;
incorrect gap between the electrodes (norm 0.8 mm);
ignition problems.

Self-repair of the Mole walk-behind tractor is not rational.
Signs of malfunctions are:

audible interruptions in operation;
during startup and operation, the power does not increase to the required level;
the engine stops spontaneously.

The algorithm for checking for problems is as follows:

Determine if there is fuel in the gas tank.
Inspect the fuel filter (if you suspect a lack of fuel entering the carburetor). Clean the filter if necessary.
Start the cold engine.
Make sure that the carburetor choke is in the closed position.

Seek professional help if you are unable to independently identify problems and fix them.

Owners of these walk-behind tractors usually encounter problems with engine operation.

How to set the ignition

To set the ignition, use a special probe and set the gap between the electrodes within 0.6-0.8 mm. After this, check whether a spark is formed from the contactless magneto MB-1.

It is recommended to use spark plugs A-11 or A17B.

Belt replacement

You should purchase a belt for the Mole walk-behind tractor in accordance with the manufacturer’s instructions in the instructions. Installing unsuitable models from unknown manufacturers will result in additional problems.

To replace the belt, proceed as follows:

Switch to neutral gear and turn off the engine.
Remove the protective cover and old belts.
Even if one of the belts is not worn enough, both should be replaced. You can use scissors for removal.
Remove the pulley from the drive shaft and put new belts on the gearbox shaft pulley.
Take the removed pulley and pull the belts onto it, then install it on the motor shaft. In this case, the key must be installed correctly, otherwise the pulley will not rotate.
Make sure that the belts are not distorted and place them on top of the tension rollers.
Attach the protective cover in place.

Motor cultivator Mole MK-1A-02

The “Mole” MK-1A-02 motor-cultivator is produced domestically. The first units were produced by the manufacturer in the 80s of the last century. These devices, although they differed (in characteristics, structure, principle of launch and operation, trailed equipment, etc.) from the modern motorized cultivator “Mole” MK-1A-02, but were appreciated by the owners of vegetable gardens, greenhouses (small-sized farms ). From the very moment of its appearance, “Mole” has become an indicator of reliability, durability, functionality and high technology.

Motor cultivator Mole MK-1A

Description

The modern unit labeled MK-1A-02 has been modernized, resulting in an increase in its power (2.6 l/s) and, accordingly, productivity. A two-stroke engine running on mixed fuel (gasoline + oil) is capable of ensuring uninterrupted operation of the cultivator for a long time. The relatively light weight (only 48 kg) allows you to easily transport the equipment to any place that requires treatment with a motor cultivator.

Using the Mole cultivator, you can carry out the following agricultural work on the site:

plowing soil of any severity;
cutting through the soil for sowing;
planting potatoes;
hilling of planted plants;
weeding;
digging up potatoes;
mowing;
snow removal;
transportation of goods, etc.

Specifications

Parameter	Meaning
Manufacturer country	Russia
Milling cutter diameter	33 cm.
Power	2.6 hp
Number of speeds	1 forward/0 backward
Reverse	No
Steering column	1 position
Working width	35-60 cm.
Grip depth	25 cm.
Weight	48 kg.
Dimensions	1300x810x1060 mm.

Modernization of the MK-1A model

If you have an old Mole model, do not rush to throw it away. Why then overpay when buying a new cultivator for the frame, gearbox and other parts if you already have them. You can get by by simply replacing the motor.

The old engine can be replaced with a four-stroke LIFAN - 160F. The Chinese engine is not expensive, plus it has a power of 4 hp. With. According to the passport of the MK-1A motor-cultivator, when cultivating the soil with cutters to a depth of 20 cm, you need to add speed. There is no need to do this with a new engine. Even with the increase in engine power, the processing depth has changed, and now it reaches 30 cm. You should not count on a greater depth, as the belt will begin to slip.

Installing a new motor on an old frame is not difficult. All fastenings are practically suitable. The only difficulty is that the original pulley will need to be altered. It is removed from the old motor, an internal hole is drilled to match the diameter of the shaft of the new engine, and then installed using a key.

If, when removing the pulley, it accidentally cracks, do not rush to run for a new one. You can try to restore it using cold welding. How to do this is best explained in the video:

The mole is considered not a bad technique for a small area, but you shouldn’t require it to perform extremely complex tasks. For these purposes, there are heavy walk-behind tractors and mini-tractors.

Worm gear

This gearbox is the most affordable among other transmissions

It has a very high efficiency, which is achieved by transmitting torque directly from the worm to the shaft gear and there are no belt drives.

— Low reliability

— Short service life

— It is impossible to work with attachments. Since this gearbox has very high peak loads, which the worm cannot always withstand and simply cuts it off.

Conclusion: walk-behind tractors and cultivators with this type of gearbox are suitable for small areas and only for previously cultivated soil. It is advisable to work with a worm gearbox only on cutters, without using various attachments.