Replacing the engine on a mole cultivator - selection and installation. Mole walk-behind tractor engines - various models at an affordable price Which engine is suitable for a mole

13.10.2019

To simplify the cultivation of the land and various agricultural works in subsidiary farms, mechanization tools are used, such as the Mole walk-behind tractor. The device successfully copes with the cultivation and loosening of the soil, weeding between rows and weeds, hilling potatoes and transporting goods. It is distinguished by simplicity and reliability in operation, mobility and small dimensions, which is convenient for transportation in the trunk of a car, durability and versatility of use.

Motoblock device

Motoblock Mole is a frame structure, divided into two half-frames. In the upper part there are tube-type handles and a bracket for placing attachments located on the rear side. Controls are displayed on the handles: clutch and speed switch. Some models also have a reverse switch.

The device is equipped with four cutters, 2 external and internal, as well as a coulter. Additionally, a hiller for beds, a potato digger or a plow, a pump for water supply, and a mower are installed.

A two-stage gear-type gearbox with a chain drive and an internal combustion engine are bolted to the supporting frame, which are interconnected by a V-belt transmission. Above them is the fuel tank.

The clutch of the minitractor is off and is switched by the handle like on a moped. Engagement of the clutch provides tension to the belt to transmit torque without slippage.

Cutters for tillage or wheels for moving loads or sharing with a plow are mounted on the output shafts of the gearbox. The cutters serve as the main working body and are a rotor with special knives. They rotate and cut, crush and mix the soil while gradually moving forward. The working depth will depend on the length of the coulter used.

The cutter loosens the soil more thoroughly and mixes the fertilizer compared to the plow. Shows good performance on heavy soils and virgin soil.

Mole walk-behind tractor moves freely on built-in wheels. Before starting work, they are removed or raised, fixing in the desired position. In the first 15 hours of operation, do not give full load. At this time, parts are being worked on. With a "shock" rate of use immediately after purchase, the performance of the motor decreases.

Assembling a cutter for a Mole walk-behind tractor

Specifications

Capture width is 400-600 mm;
Rotor diameter with knives- 320 mm;
Tillage performance- 150-200 m 2 / hour;
plunge depth- 250 mm;
Dimensions in working position: length - 1000-1300 mm, width - 350-800 mm, height - 710-1060 mm;
The weight of the walk-behind tractor with an empty tank- 51.5 kg.

Engine description

In the classic version, the Mole engine is single-cylinder, two-stroke with a carburetor and forced air cooling.

The motor is equipped with a non-removable starter. It is started manually using a cable on the principle of a chainsaw.

Working volume- 60 cu. cm;
Power- 2.6 hp / 1.91 kW;
Rotation frequency- 5500-6000 rpm;
Average fuel consumption– 0.96 l/kWh;
Fuel tank capacity- 1.8 l;

The carburetor device is the same as on mopeds of the Soviet period Riga, Verkhovyna or Karpaty.

The motor uses a dry air cleaner with a replaceable filter element.

It should be filled with low-octane A-76 gasoline with the addition of M-8V1 engine oil (autol), maintaining a ratio of 1:20.

The ignition is contactless, electronic model "MB-1", as on Soviet chainsaws with a candle "A-17V". Installing the A-11 spark plug ensures stable engine operation without carbon formation.

Modifications of the Mole walk-behind tractor are equipped with more powerful 4-stroke engines made in China.

Which engine is suitable for a Mole walk-behind tractor

The "weak link" of the Mole walk-behind tractor is the engine, which lacks performance, and it does not start well. The owners of the unit are trying to solve this problem on their own.

The design of the Mole frame allows you to replace the engine with a device from another manufacturer. Alterations will be required minimal and uncomplicated, so they are quite capable of doing it yourself. In most cases, the engine of the standard walk-behind tractor is replaced with 4-stroke models with better performance.

The optimal replacement solution is Lifan 168FB with a capacity of 6.5 liters. With. It is easy to find spare parts for this motor in a specialized store at an affordable price. When choosing, you need to check the diameter of the input shaft. It should be 20 mm. For reliable operation of the device, an oil bath with an air filter is preferable, because the engine will have to be operated in dusty conditions.

A good solution would be the Patriot engine. It'll be cheap. The only condition is the presence of electrical wiring on the site.

The Honda GC 135 engine is suitable for all working conditions and consumes little fuel. The professional design of the 4-stroke motor has a single block aluminum cylinder with a timing belt. Differs in ease and environmental friendliness.

Suitable for installation on a Mole walk-behind tractor Sadko DE-220 engine. Its power is about 4.2 liters. c and an output shaft with a diameter of 19 mm, so the pulley will have to be finalized. The device is launched via a cord.

Improved technical data has a 4-stroke Forza 160F engine with a capacity of 4 liters. With. For work, he will need AI-92 gasoline.

The motor for the Mole walk-behind tractor can also be installed on other models, but only of low power. It is enough to limit yourself to 6 liters. With. A powerful motor overloads the gearbox unnecessarily and leads to breakdowns.

How to make a replacement

The trouble-free operation of the minitractor will depend on compliance with the installation and connection sequence.

Unscrew the factory fastener and remove the cover.
Disconnect the wires and disconnect the belt.
Carry out dismantling.
Attach the new motor and mark the new mounting holes on the frame.
Install the engine and put on the belt.
Adjust the belt tension by moving the motor.
Align the unit so that the motor and gearbox pulleys are in the same plane and coaxial.
Drill through holes and fix the walk-behind tractor engine with 35 mm bolts.
Connect the clutch, gas and muffler system.
Carry out a run-in at idle.

About the disadvantages of a walk-behind tractor

The multifunctional walk-behind tractor Mole has its drawbacks:

The main disadvantage of the device is a low-power engine. With more opportunities, there would be more.
The open type design leads to severe contamination during operation. Hard-to-reach places are clogged with dust, in which dirt should not be.
Stones, roots, clods of earth fall into the gap between the body and the knives, making work difficult.
Only one working speed.
The service life of a 2-stroke engine does not exceed 400 hours.
A narrow strip of land is processed in one pass.
The piston group fails after 1-2 years and must be replaced.
After replacing the engine with a more powerful model, the frame has to be strengthened with additional parts.
The high price of the unit.

Dear gardeners!

On the eve of the next summer season, we are all faced with the need to cultivate the soil. Most use mini-agricultural equipment for this, namely a cultivator or walk-behind tractor. Moreover, the Soviet cultivator "Mole" is known to everyone.

As a rule, this unit was massively purchased 10-15 years ago and served faithfully for a long time. Serially, this cultivator was equipped with a 2.6 hp two-stroke engine, modifications were produced with a rear speed and only with a front one.

At the moment, for most gardeners, the Krot cultivator has served its time and requires a thorough repair. As a rule, the quality of modern spare parts leaves much to be desired, and native parts have worn out. After replacing one part, another breaks.

If the gearbox is working, then it is enough to replace the engine on the cultivator. Now in stores there is a large selection of engines from different manufacturers. To work in the country, feel free to choose engines from well-known Chinese manufacturers, such as Champion, Forza, Lifan etc. The main thing is to contact trusted sellers. Before buying, be sure to require a pre-sale check, that is, it must be filled with oil, gasoline and started. Fuel is paid by the buyer.

For the Mole cultivator, a 4 hp engine is enough, you can also put 5.5 hp, 6.5 hp engines.

Important! A flooded engine must not be turned over.

1.Pulley

The pulley must be selected depending on the diameter of the shaft on the new engine. As a rule, it is 18 mm, 19 mm, 20 mm.

2.Oil

The new engine is four-stroke, so you need to buy special oil for 4-stroke garden equipment. Automobile is not allowed. Do not forget that oil is poured separately, gasoline - separately (AI-92). The first oil change is done after 5 hours. Therefore, two bottles of oil are usually purchased (one of which is filled during a pre-sale check).

3. Bolts, washers, nuts.

You will need bolts to mount the motor to the frame, the pulley to the motor.

4. Gas cable- installed on request.

Now let's move on to the installation of the engine on the Krot cultivator.

Depending on the modification of the cultivator, the new engine will either perfectly fit the frame, or two additional holes will need to be drilled.

Step 1

It is necessary to install the pulley on the shaft on the engine, insert the key, adjust the distance from the engine to the pulley with washers, fasten the pulley with a bolt and washer.

Step 2

We try on the engine on the frame. At the same time, we put the belt on the engine pulley, gearbox pulley, tension roller.

In our case, the holes did not match, we had to drill new ones.

Step 3

We install the engine on the frame, fasten everything with bolts.

Step 4

Be sure to make wings for the cultivator, otherwise all the dust during cultivation will get into the engine, the air filter will become dirty very quickly.

Step 5

Let's get to work. In no case do not work at idle! Maximum - a couple of minutes we warm up the engine and get to work. The only thing is that at first we work in a sparing mode: after 10-15 minutes we let it cool. The first oil change is after 5 hours.

The motor cultivator "Krot" is the first small-sized product intended for use in agriculture, which is produced in Russia. During its existence, the walk-behind tractor has proven itself from the best side and is in demand among consumers.

Opportunities and applications

The main purpose of the Krot motor cultivator is to cultivate the soil, and therefore it is usually used in vegetable gardens or household plots. Small in power and size equipment is used for leveling, loosening, harrowing the earth in areas whose area does not exceed 10 acres.

The main operations of this device can be performed using a cutter, the torque to which is transmitted from the motor. When using other attachments, you can use a walk-behind tractor for hilling, mowing grass. In some cases, it is used as a drive for a pump for pumping liquid, connecting the engine through a belt drive to the pumps. "Mole" can carry cargo up to 200 kg, if you equip it with a tow hitch and a trolley.

This device is relatively easy to handle and maintain, and does not take up much space when stored.

power unit

These devices are equipped with motors with a capacity of 4 to 6.5 horsepower, and therefore, to perform certain tasks, it is recommended to choose it depending on performance. If necessary, you can independently install a new engine, but all work must be carried out taking into account certain nuances that affect the durability and efficiency of the machine.

The best motors

Various types of motors are installed on the Mole walk-behind tractor, which increase the performance of the device, and also allow it to be used more efficiently. Such units can be installed independently subject to the rules, and before buying it is important to determine their power in order to choose the best engine for agricultural activities.

Honda GX270

The Japanese-made Honda GX270 engine can be easily installed on a walk-behind tractor to ensure perfect operation of the unit in extreme conditions. The volume of such a four-stroke power unit is 270 cubic centimeters, and the power is 9 liters. With. This ICE has an air cooling system, it is easy to repair in case of malfunctions. To increase the motor resource of the engine, it is recommended to fill in AI-95 fuel.

As engine oil, you can use 10W40 or 10W30 fluids, which are recommended by the machine manufacturer. The power unit of the device has a sensor, thanks to which you can monitor the amount of oil in the crankcase and add it in time. Honda engines are the most optimal devices for installation on Krot motoblocks.

Lifan 168 F-2

Another Chinese engine that is suitable for a walk-behind tractor is the Lifan 168 F-2. It has a horizontally mounted crankshaft and runs on fuel with a low octane rating. One cylinder allows you to develop a power of 6.2 horsepower. The imported motor is equipped with an air cooling system, and its volume is 196 cm3, the engine weight is 16 kilograms.

SadkoDE-220

A good option for installation on the "Mole" is this type of power unit, which is inexpensive and runs on electricity. Its power is 4.2 horsepower, and the connection to the network is made using the cord that comes with the kit.

Also, some owners install other types of units, and therefore you can learn from such craftsmen and equip your walk-behind tractor with another engine for long-term use.

After deciding to purchase a new engine for the Mole walk-behind tractor, you need to familiarize yourself with its characteristics, read the operating instructions, and also correctly install the power unit on the frame of the machine. If there are no skills, it is recommended to take the help of a specialist.

Also, after installing a new motor, it is important to properly operate the walk-behind tractor, which will increase the motor resource of the equipment.

Replacement and installation

It is important to install new motors in accordance with the rules and in the correct sequence, depending on the manufacturer's recommendations. In some cases, you will need to additionally purchase mount kits to install the motors on the frame. They are sold in stores. If it is not possible to purchase, then you can build a structure to hold the power unit yourself.

Installation work is carried out in a certain sequence.

Unscrew the factory engine mount on the walk-behind tractor. There are only 4 of them. It is also important to unscrew all control drives.
Remove the original motor from the frame.
Make sure the connection holes on the new motors match the connectors on the frame. If they do not match, it is necessary to make a mount for a new device.
Take a new motor and put its frame.
Connect the drive belt.
Attach the engine to the frame with bolts and tighten until it stops.
Connect controls. Start the engine and test.

Thanks to such simple actions, you can get a Mole walk-behind tractor with a powerful domestic or foreign-made motor in order to increase the efficiency of the machine itself and reduce the cost of its use. If a new motor is installed on a walk-behind tractor, it is important to run in before starting its operation, the duration of which should not be less than 20 hours.

If you need to make an additional structure for mounting the motor, then it is important to use reliable metal, and connect the fastening elements together by welding. This will achieve the desired performance and reduce the cost of purchasing fasteners in the store.

If necessary, you can inexpensively purchase spare parts and accessories for various types of motors that are listed above, and also do not significantly increase the weight of the machine itself during installation, which is ideal for use in small areas, and also allows you to transport the unit in a conventional car trailer.

additional characteristics

A feature of using this device is that it is equipped with a gearbox with a reverse gear, as well as an improved carburetor and a modified air filter. This allows you to use the device in small areas, as well as when mowing in the garden. The engine consumes little fuel, and if necessary, additional equipment can be installed on it to perform other tasks.

Motoblocks have non-contact ignition, and standard size candles are used.