How to remove the pulley from the tiller.

What motor for the trimmer to choose: types, best models, how to remove, repair, replace

Power tillers Zubr, Caiman, Patriot, Texas, Pro Arab, Crosser, VIKING, Forza are quite popular among customers who appreciate the best combination of price and quality. Their use is appropriate for a variety of agricultural works, with which this technique copes perfectly.

This is just a partial list of what these power tillers are used for:

• soil cultivation;
• mowing grass to make hay;
• Harvesting (beets, potatoes, etc.).);
• tilling the soil between the beds, etc.д.

As we can see, the Zubr does almost all the work that is typical of the countryside. It is a real helper for every farmer who spends his time in a useful way.е. Tilling the ground, planting potatoes and other root crops, caring for cattle, etc.д.

The Zubr power tillers are produced with high-quality components that have undergone special testing and are quite justified in their popularity. in general, the range of Bisons is quite extensive, from small powerhouses to heavy machines with power units.

Today we present to our attention diesel trimmers Zubr with an engine 6 liters.с., which use diesel as the fuel. This fact allows them to show better performance indicators than engines with similar power, but working on gasoline.

over, diesel fuel is more economical, which is an additional advantage for these power tillers. In the category of diesel power tillers with 6 l.с., Zubr presents the model NT 105, which can cope even with the most difficult plots, i.e.е. virgin.

This was made possible through the use of a worm gearbox and multi-disc clutch included in the design of the unit.

If you have a full-fledged plot of land with a vegetable garden and livestock, then it makes sense to buy additional attachments for the tiller, which will significantly expand its range of application:

• Transportation of various cargoes;
• Thanks to the potato planting machine, you can quickly and accurately plant potatoes in your garden;
• snow removal and t.д.

The Zubr diesel single-axle tractor is equipped as standard with a tiller and pneumatic wheels. Even this minimal set is enough to compete with European manufacturers, distinguishing from them even more acceptable price.

For our compatriots, it is that competitive advantage, which forms an increased demand for the Zubr technique.

Technical specifications and price

Zubr NT 105 single axle tractor has a 4-stroke diesel engine KM178F.

HT 105

In addition, it has the following technical characteristics:

• type of fuel used. diesel;
• engine volume is 296 cm3;
• maximum power. 6 liters.с.;
• fuel tank volume. 3.5 l;
• Width of the processed band. adjustable, from 75 to 105 cm
• Digging depth. adjustable, from 80 to 300 mm;
• Clutch type. multi-disk, in an oil bath;
• speed. two forward and one backward;
• Total weight. 120 kg;
• fuel consumption. 1,5 liters per one hour of work;
• start type. manual;
• capacity. 350 kg;
• type of cooling. air;
• overall dimensions. 174cm/150cm/98cm.

This price does not include attachments, which must be purchased separately.

Varieties

Manufacturers produce three types of pulleys for power tillers:

• disk. have a size from 8 to 40 cm;
• with spokes. have a diameter of 18 to 100 cm;
• monolithic. two-strand has 3 cm and three-strand has 10 cm.

There are two types of seating:

All pulleys have 8 cavities, which depends on the quality of grinding, depending on the wear rate of the working belt.

Pulley types depending on the type of gearbox:

For power tillers with attachments you need to buy pulleys with a diameter of 19 mm, and for more complex speed machines you will need pulleys with a diameter of 13.5 cm.

Main problems

Belt adjustment and dimensions

The Neva MB-2 engine uses the drive belt A-1180. This model uses a single belt that provides forward travel.

Other modifications of the Neva MB-2 model use two drive belts. The reverse is made in the gearbox itself.

Belt replacement for MB-2 motoblocks is performed in the following sequence:

Replacing gear oil seals

The glands in the Neva MB-2 motorblock should be replaced when oil leakage is detected. Such a condition is dangerous in that the motoblock gearbox can be left without oil, and this will lead to rapid wear of the unit.

The sequence of replacement of oil seals is as follows:

Adjusting and tuning the Neva MB-2 carburetor

The functionality and durability of the engine of the power tiller depends on the stable operation of the carburetor. That’s why its adjustment and tuning are so important. In addition, if the carburetor is not properly set the gasoline power tiller can have higher fuel consumption

Adjustment of the Neva MB-2 motor-block carburetor is performed as follows:

For long-term and trouble-free work of your power tiller you need to carry out regular engine diagnostics, keep track of oil change intervals, as well as follow the operating conditions and the time intervals of scheduled maintenance.

Valve adjustment

Adjusting the valves is a fairly simple procedure, for which you will need wrenches, screwdrivers and a dipstick. The process of valve adjustment is necessary for establishing the optimum and technically correct gaps between the valves of an engine on a power tiller. Valve adjustment by the example of the Neva MB-23 motorblock (the principle is the same for all)

How to disassemble the engine on a power tiller Agro

To switch the engine to gasoline Ai-92, you need to replace the spark plug A11-3 with a spark plug A17B and adjust the advance angle of ignition, shifting it by 2 degrees counterclockwise.

Detailed technical characteristics of UMZ-341 engine

Engines are designed to operate under the following conditions:

UMZ-341 and UMZ-341E engines are single-cylinder, four-stroke, gasoline, carburetor engine with overhead valve arrangement, spark ignition, with horizontal engine shaft arrangement, with inclined cylinder arrangement, has centrifugal all-mode rpm regulator balancing shaft.

UMZ-341 engine is designed to be installed on UMPO Agro power tillers that are supplied to the domestic market and for export to countries with temperate climate

UMZ-341 E engine was designed on the basis of base model UMZ-341 and designed for driving an electric generator set AB-4.

Engine carburetor adjustment is made in case of unstable engine operation

1 Start the engine and warm it up without load for 2 to 3 minutes.

2 Turn the idle speed adjusting screw 8 (Fig. 3) to a position at which the engine starts to run unsteadily slowly turn the screw to achieve stable, continuous operation of the engine

3 Turning the stop screw 10 set the throttle to the lowest opening position at which the engine stably operates at minimum idle speed, then turn the adjusting screw 12 to maximize engine speed. Adjust the regulated revolutions with the set screw 10

4 if the gasoline overflows through the carburetor float chamber it is necessary to remove the float chamber and check the condition of the float, shut-off needle, valve seat

Thermal valve gaps adjustment on UMZ-341 engine

Perform adjustment of clearances between the valve and rocker arm on a cold engine in the following sequence

Replace the cylinder head and starter head caps, securing them with nuts.

Note: For more accurate installation of the piston in the top dead center to remove the casing fan and align the mark “E” at the end of the flywheel with the pin “D” on the crankcase (Figure 1 sheet H).

Here’s the first list of possible problems and solutions from the owner’s manual. Read the whole manual to learn how to solve these problems.

How to change the engine UMZ-341 installed on the motor-block Agro on Lifan? Many people want to replace this engine with a more modern one, for them a very useful video.

How to Install a Pulley on a Single Axle Tractor

Lifan motor for a power tiller. This is a universal power unit, designed for installation on small agricultural, horticultural and construction equipment by the largest Chinese company Lifan, which since 1992 has specialized in producing not only equipment, but also motorcycles, cars, buses, scooters. High-performance engines are supplied to the CIS countries, as well as to the markets of Europe and Asia.

Lifan engines have a wide range of products. All this is suitable for power tillers, cultivators, snow blowers, ATVs and other machinery.

When selecting an engine model, the operating conditions, the type of engine on which the engine will be installed, the amount and type of work to be done in the sections, the type of power and capacity of the engine, the diameter and location of the output shaft must be taken into account.

Specifications

For engines, gasoline engine models are ideally suited to. Lifan 168F, 168F-2, 177F and 2V77F.

The 168F belongs to the group of engines with a maximum capacity of 6 liters. с. and is a single-cylinder, 4-stroke unit with forced cooling and a crankshaft position of 25°.

The engine specifications for the engine are as follows:

• The cylinder volume is 163 cm³.
• Fuel tank capacity of 3.6 liters.
• Cylinder diameter is 68mm.
• Piston stroke is 45mm.
• Shaft diameter is 19mm.
• 5.4L capacity. с. (3.4 kW).
• Speed. 3600 rpm.
• Manual start.
• Overall dimensions. 312x365x334 mm.
• Weight. 15 kg.

The 168F-2 is of particular interest to motorcycle users because it is a modification of the 168F engine, but has a longer service life and higher parameters, such as

The diameter of the cylinder and stroke are 68 and 54 mm, respectively.

From the 9 liter model engine. с. Divided Lifan 177F, which is a 1-cylinder 4-stroke gasoline engine with forced air cooling and horizontal output shaft.

The main technical parameters of Lifan 177F:

• Power. 9 liters. с. (5,7 kW).
• Cylinder volume is 270 cm³.
• Fuel tank capacity of 6 liters.
• Diameter of each piston stroke. 77×58 mm.
• Speed. 3600 rpm.
• Overall dimensions. 378x428x4408mm.
• Weight. 25 kg.

The Lifan 2V77F engine is a 2-piston, 4-stroke, 4-cycle, forced-air-cooled gasoline engine with non-contact transistor magnetic ignition system and mechanical speed control. Technically, it is considered the best of all heavy-duty models. Its specifications are as follows:

• Capacity. 17 liters. с. (12.5 kW).
• Cylinder capacity of 614 cm³.
• The fuel tank has a capacity of 27.5 liters.
• Cylinder diameter is 77 mm.
• Piston stroke is 66 mm.
• Speed. 3600 r / min.
• Starting system. electric, 12-volt.
• Dimensions. 455x396x447 mm.
• Weight. 42 kg.

Lifetime of the professional engine is 3500 hours.

Fuel consumption

For the 168F and 168F-2 engines, fuel consumption is 394 g/kWh.

Lifan 177F and 2V77F models can consume 374 g/kWh.

This results in an estimated running time of 6-7 hours.

The manufacturer recommends using AI-92 (95) gasoline as fuel.

Traction class

Light traction motor units 0.1. are units up to 5 liters. с. They are purchased for plots up to 20 acres.

Average recreational tractors with a capacity of up to 9 liters. с. They cultivate areas up to 1 hectare, and crawler tractors. 9-17 liters. с. 0.2 traction class cultivates fields up to 4 ha.

Lifan 168F and 168F-2 engines are suitable for Celin, Neva, Salut, Favorit, Agat, Kaskad, Oka.

The Lifan 177F engine can also be used for medium-sized equipment.

The most powerful gasoline unit Lifan 2V78F-2 is designed to work in harsh conditions on mini-tractors and powerful motor units such as Foreman, Sadko, Don, Profi, Pakhar.

unit

According to the engine and engine manual of the cultivator, the Lifan 4-stroke internal combustion engine has the following components and parts:

• Fuel tank with filters.
• Fuel tap.
• Crankshaft.
• Air filter.
• Starter.
• spark plug.
• throttle
• drain plug.
• Oil plug.
• Muffler.
• Throttle lever
• probe
• Engine switch.
• Service cylinder
• Gas distribution valves.
• Crankshaft bearing

The motor is equipped with an automatic oil level control safety system, and in some models it has an integrated gearbox to reduce the speed of the shaft. The timing system is equipped with intake and exhaust valves, manifolds, camshaft.

advantages

The Lifan engine has the following advantages:

• stability of operation;
• high quality;
• reliability;
• low noise and vibration level;
• small overall dimensions;
• the use of a cast-iron liner to increase engine life;
• ease of operation and maintenance;
• large margin of safety;
• long service life;
• affordable price.

All these qualities distinguish Lifan engines from other engines.

Works in the new engine

Engine failure. Mandatory procedure, which prolongs the life of the mechanism. To break the engine of the engine unit, you must follow the instructions of the product, use high quality fuel and oil of the recommended brands.

• Check the oil level in the crankcase before starting the engine.
• Check and, if necessary, refill transmission oil.
• Fill the fuel tank with fuel.
• Start the engine at low rpm.
• Start the engine in easy mode, alternating gears. Tillage in 2 passes at a depth of no more than 10 cm for 1 pass, processing in 2 gears.
• After the breakdown replace the engine oil, gearbox, transmission, inspect the consumables, replace the oil filters, add new fuel.
• The breaking procedure takes about 8 hours.

Belt tensioning of the Neva motor-block: the algorithm of actions

The Neva MB-2 and MB-1 power tillers are characterized by different location of belts. Therefore, and the scheme of installation of parts will be different.Belt tensioning on the MB-1 model is carried out in a certain way:

• Initially, the shroud is removed from the V-belt mechanism;
• Carefully remove the backplate from the pulley;
• The spring-loaded roller is loosened with a wrench;
• Dismantle the old element and you can put in a new one;
• Install the pre-disassembled parts of the unit.

It is worth considering how to perform belt replacement for units of the MB-1 model range:

• The shield and cover of the V-belt system are removed;
• The pulley bolt is loosened and the reverse belt is removed;
• Loosen the bolts that hold the bracket in place;
• The forward drive belt is removed;
• New elements are installed and tensioned, everything is secured and the previously removed parts are put back into place.

Belt adjustment on the Neva MB-2 motor-block is as follows:

• The shroud is removed;
• A screw loosens the tension of the regular belt;
• All the screws that hold the bracket to the body of the unit are removed;
• The old part is pulled out and the pulleys are adjusted;
• Before installing the belt, the places between the elements are thoroughly wiped, the hoses are blown;
• A new belt is installed. One end is connected to the gearbox shaft, the other end to the pulley in the motor;
• The entire structure can be restored.

details about how to tension the belt on the power tiller Neva, it is worth to learn from the proposed video.

Mainly pull a new element when the power tiller breaks. Much less often the replacement is performed in advance to prevent malfunctions during the operation of the unit. In any case, the work of replacing the belt must be done carefully, because if it is overtightened, belt breakage is inevitable.

How to lubricate the gearbox of grass trimmer

You should regularly lubricate the grass trimmer gearbox, adhering to the recommendations of the tool manufacturer. It is recommended to apply an antifriction agent also on the drive shaft, located in the boom. Lubricant is introduced into the cavity of the gearbox crankcase through a special hole, which is closed with a threaded plug. The unit should be cleaned of dirt beforehand. Remaining old oil must be removed and new oil refilled when carrying out repairs or replacing gears or bearings.

There are different types of gear lubricants according to consistency:

Also, the characteristics of the lubricant depend on the underlying basis:

• Graphite oil contains a complex of additives that reduce the risk of scuffing. Has a solid or plastic consistency.
• Lithium grease, which additionally reduces element corrosion. Categorised as plastic.
• Universal, consisting of mineral oil and a set of additives. Refers to the category of liquid or semi-liquid lubricants.

The most common lubricants are Lithol-24, Champion EP-0, Gear Grease Oregon, and their analogs made by other manufacturers. The list of recommended lubricants and their parameters are specified in the trimmer’s repair and maintenance manual.

How often do you encounter problems with the grass trimmer lower gear? Can the fault be repaired independently?

What are the grass trimmers

The capabilities of cultivators are most dependent on their weight. And here we can draw up a rough classification according to “weight categories.

Cultivators of the ultralight class. models designed only for processing relatively light soil and loosening. They weigh 10-15 kg, are equipped with electric motors.

Cultivators of light class weigh 20-30 kg, equipped with gasoline or electric motor. It makes no sense to equip machines in this weight class with a diesel engine. And many power tillers look the same as cultivators. in fact, only one more shaft is added on the pulley, on which a driving belt is installed. However, there are different combinations of power tillers. The category of power tillers includes models that have PTO and the only removable “active linkage”. cutters, which rotate counter to the wheels. To work with other equipment the unit with cutters is removed. Some of these models with diesel engines weigh more than 300 kg.

Models with trailed equipment are able to work on heavier soils.

The most common are middle class cultivators. They weigh 40-60 kg, at some instances there are electric motors, but usually they are equipped with gasoline motors. Light models are able to work with trailed equipment, such as a rocker and a thresher. To work with a plough, you need a machine weighing at least 50 kg, and additional weights are desirable. Of course, for such works, tillers should be changed for wheels. metal ones with grousers or pneumatic ones.

Theoretically, a number of cultivators can also be used with a trailed cart. There are practically no “heavy” cultivators, their niche is occupied by power tillers.

What is a PTO on a power tiller. description and functions

PTO is an element that is needed to mount various types of attachments on a single-axle tractor. Motoblocs with a PTO allow the use of such types of attachments as mulchers, seeders, harrows, stump grinders, mowers, as well as devices installed directly in the trailers used for work.

The main function of the PTO is to receive and transmit the rotational force from the engine to the attachment. In most cases, this important element is located in the back of the power tiller, which allows you to connect to it almost all known types of attachments.

Among the main advantages of the PTO are its versatility, high durability and reliability. In addition to the pluses of the PTO has several significant disadvantages, which are the high weight of the element and the need to use an additional gearbox together with it.