How to adjust belts on a power tiller. Belt sizes for power tillers Neva – what to pay attention to?

How to choose the right ignition on the Moto-Block. easy ways. Adjusting the valves of the power tiller. an important operation for durable engine performance What is the best engine to put on a single axle tractor Cascade

The land is known to many people since Soviet times. This means of small-scale mechanization copes with its task perfectly, considerably simplifying the work of man.

Considering that this machine can be equipped with additional implements, it can actually do all the work on the site.

However, in order for a single-axle tractor to work in an optimal mode, without failures, it needs constant care, which consists in timely maintenance.

In addition, not the least role is played by the adjustment of various nodes that are responsible for performance. This tool is used to adjust carburetor valves, the correct adjustment of which will determine the stability of the engine.

Design and repair of a power tiller OKA

Single axle tractor “Oka”. this is serious equipment for real professionals, designed to perform a set of works on the ground, in the countryside, can be used as a mini-snowmower in combination with special attachments.

adjust, belts, power, tiller

The main advantages of “Oka” power tillers, which made them so popular among farmers and dacha owners:

  • economical, low-noise engines
  • can reach a speed of 10 km with a trailer.ч;
  • small dimensions (disassembled equipment can be transported even in the car trunk);
  • Possibility to cultivate not only tilled soils, but also virgin lands;
  • multifunctionality (used for irrigation, cleaning, transportation, etc.).д).

single axle tractor equipped with four-stroke engine, gearbox, steering wheel, clutch and two wheels. Instead of wheels, the single-axle tractor can be equipped with four tillers for soil cultivation.


Engine Robin Subaru EX 21 Engine Mitsubishi, 6 l.Lianlong LL-160F engine Honda GX270 engine

Depending on the modification the single-axle tractor “Oka” is equipped with engines from different manufacturers (DM-1M, DM-1M1, MITSUBISHI GT600 6,0/4,4, I/C 6,0 HP 6,0/4,4, Honda GX-200 6,5/4,8, Lifan 168 F-2A 6,5/4,8, Vanguard 6,5 HP 6,5/4,8, Lianlong 168F-1A 6,5/4,8, Robin Subaru EX 17 6,0/4,4, Robin Subaru EX21 7,0/5,2, KADVI 168F-2A).

One of the popular modifications is “Oka” with the engine Lifan This engine is economical, and its functionality allows you to install it in small-sized equipment (motocultivators, power tillers). Lifan is made in China, it has proved to be a durable and reliable engine.

Choice of model depends on what area of land the operator is going to work with a single axle tractor, as well as the main tasks (plowing, cultivation, digging potatoes, etc.).(e) that the unit will.

Engine malfunctions

Let’s analyze why the engine on the “Oka” power tiller can go haywire? So, the main reasons that the engine does not work, and the single axle tractor does not start, may be as follows:

  • insufficient fuel or oil level
  • low-quality gasoline;
  • clogging of the fuel or oil filter;
  • Problem with spark plugs or seals (oil leaks; spark plugs need to be replaced);
  • exceeded the angle of inclination when putting the motoblock (more than 15 degrees, start the single-axle tractor on a level surface);
  • The integrity of the electrical wiring is broken;
  • Breaking or splitting of the transmission belts;
  • poor tire pressure in combination with any of the above causes;
  • Trying to start the engine without warming it up;
  • too low temperature of motoblock storage, and also too much a minus in the street at start of techniques (store a single axle tractor in a warm room; in a minus temperature fill up warm oil to the engine and a gearbox).

Change oil

According to the manufacturer’s instructions, it is recommended to use transmission oil TAD-17I or TAP-15V, and any oils according to GOST 23652-79 for the gearbox of “Oka” motor-blocks. Oils can be mixed in different proportions.

For engine use automotive engine oil type M-53/10G1 or M-63/12G1. Oil must comply with API: SF, SG, SH and SAE: 10W-30, 15W-30.

  • during running-in period in 20-25 hours;
  • after next 25 hours check and refill oil in the gearbox;
  • After 50 hours of operation the transmission oil is changed
  • at scheduled inspections after 100, 200, 500 or more hours, the oil in all reservoirs must be drained and replaced with new oil.
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Since the manufacturer currently produces modifications of the motor-block “Oka” only with gasoline engines, you should choose to fill gasoline AI 92 or 95.

Installation and replacement of belts

Dimensions of belts for Oka motor-block and its modifications
Power transmission belt for the implementation of the front stroke: А-1180 вn I GOST 1284.1-89;A-1213 I GOST 1284.2-89.
Power drive belt for backing up: Z(0) 1400 I or Z(0) 1400 vn I GOST 1284.1-89.

Belts are removed manually by loosening the adjusting bolt. Belts are replaced by equivalent ones of appropriate width and length. It is advisable to purchase spare parts, including.ч. and belts, in stores of brand spare parts for power tillers. These stores work directly with manufacturers.

How to know whether to tighten the belt?

When pressing the belt by hand, it should only deflect slightly. If they sag, the engine will hum, there may even be a blue smoke from their overheating. Worn belts, recessed in the belt cells, must be replaced. First you should remove the nuts that fasten the belt frame. Next, use the adjusting bolt to tension the belts, periodically checking the degree of tension by hand.

The same operations should be carried out after the new belts have been installed in order to adjust them.


The most popular modifications, unfortunately, are not yet equipped with a headlight, but some owners of machines regulate this nuance by themselves.

In the basic models, produced by “Kadvi”, the light on the motoblock is not provided.

Making lighting on a power tiller is very easy, usually using a basic power generator. Wiring is done as follows:

  • the device that generates electricity is connected to the button on the steering wheel;
  • From the button run the necessary wires to the electrical equipment (e.g., headlight);
  • Wires are insulated in any way from mechanical damage and water (most often a corrugated pipe is used).

If there is enough generator power, the headlight will be bright. If there is not enough power at low engine speeds, the light will go out. Some craftsmen change the generator of a motoblock to an automobile or tractor one.

How to make a light for a power tiller or minitractor with your own hands:

In any case, even without using a generator it is possible to make a light on the power tiller. This will only require a 12-volt battery and an LED lamp. Battery can be taken from an electric bicycle or scooter.

Features and varieties of drive belts of motoblocks “Neva

Features of drive belts on “Neva” motor blocks:

  • Functionally replace the transmission and clutch;
  • ensure that the unit can be started easily by separating the motor part and the gearbox at the moment of changing to a different speed mode;
  • change power smoothly and without jerks.

Belts on a Neva single-axle tractor vary by:

  • localization:
  • in the drive part. between the pulleys “motor-reducer;
  • rear end;
  • front gear.
  • cross-sectional area:
  • V-belts;
  • rounded;
  • flat
  • serrated;
  • the type of shaft and belt in relation to each other:
  • open gear;
  • semi-crossed and crossed;
  • angular;
  • material. usually it is a reinforced line for trimmer (cord), covered with vulcanized rubber and a special protective coating;
  • size. the calculated, inside and outside diameter length is taken into consideration

Air filter maintenance

In many power tillers and not only, the air filter is used in the form of foam sponge. Like here.

Air filter

As you can see under the cover of the air filter housing, there is already a dusty foam. Periodically it should be cleaned, the foam rubber should be taken out and washed with warm soapy water. Then you need to dry it out, and now most importantly you need to soak it in machine oil, it needs to be in oil, not dry. This will keep dust out of your engine.

Well, that’s all for now, not so great discoveries, but maybe someone will be useful. If you have any tricks of your own, feel free to share them in the Комментарии и мнения владельцев. Thank you!


Before you buy a belt, you need to determine the model number of the tensioner that was previously used on your power tiller.

  • Remove the old elements of the drive from the motoblock, using the appropriate tools;
  • check the markings on it, which are stamped on the outside (the marking A-49 should be white)
  • If there is no way to see the markings, you must measure the distance between the tension pulleys;
  • visit the manufacturer’s web site and use the table to determine the size of the outer belt or ask the dealer for details.

To avoid future problems with the selection, after you buy a new element for the drive, you need to write down the numerical value from its surface. This will help to avoid mistakes when choosing and buying.

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It is important to follow the installation instructions to avoid damaging the new element and reducing the service life.

How to choose the right size?

You can find out the size of the belt of your machine from the documentation or from the number on the old product (if it is still there). If you can’t find the measurements, you can use a tape measure or a cord. You can also use special tables.

The flexible belt drive element on your power tiller can be replaced and adjusted by yourself.

The V-belt drive reliably transmits the power from the motor, but over time the belt wears out, cracks and tears form on it.

The task of changing it appears. This can be done in special service centers. This is the right way to go, but it is not cheap. You can do this yourself, and if you have repaired your car at least once, you have experience with machinery.

Then take off used flexible element

First remove the plastic safety guard by unscrewing the fastening nuts. After removing the belt, loosen the tension between the pulley (friction wheel) of the gearbox and the motor.

On some modifications there are specialized devices for tensioning and loosening the belts. But this mechanism is usually missing from power tillers. To loosen the tension of the drive belt, loosen the nuts fixing the motor (4 pieces) and move it to the right. Then take off the belt. Do not forget, to move the motor to the right side (to the left side) to tension (loosen) the product can only be within 20 millimeters.

Put on new products

Install the new powertrain belt in reverse order. Then tension the belt, taking into account the necessary sag of 10-12 mm. Be sure to check the alignment of the friction wheels on the gearbox and motor. Tighten the nuts fixing the motor diagonally.

When not in use, the belt should easily turn on the drive shaft, but it should not come off. To tension the belt, depress the clutch lever and pull up the clutch shaft to tension the belt.


When a new product and an educator loop (sootener) will be assembled, it is required to produce their tension and adjust, since immediately the belt will sag, which is considered inadmissible. It can shorten the time of its use, the wheels will start to spin, the engine will start to stink at idle speed.

To perform tensioning, you need to clean the friction wheel through a rag, and also relax the bolts fixing the motor to the chassis, with a wrench for 18 to turn the adjusting bolt in the direction of the hand of the clock, tightening the device. Try to tension the drive belt with the other hand at the same time so that it is free to spring freely. If you overtighten it, it will also be detrimental to the reliability of the bearing and belt.

When installing all the activities must be carried out gradually and carefully to avoid damage to the product. This can provoke its rupture or premature failure of the drive.

After installing and tensioning the drive belt, check that it is not twisted. The new product should be level and without deviations.

Processes that demonstrate installation and tensioning errors:

  • Vibration of the body when moving;
  • if drive belt is overheating at idle speed, smoke;
  • wheels slipping during operation.

Belt for power tiller

Group of companies LLC “S-Agroservice” offers advantageous to buy a belt for a motor-block from the catalog according to the table of sizes. In our warehouse we have drive belts for power tillers of domestic and foreign production. Deliver your order via transport companies in any region and city of the Russian Federation just a few working days.

A power tiller belt may be V-belt, toothed belt or multi-ribbed belt. Belt type depends on the pulley design. Of course, different manufacturers may have different pulleys, depending on the transmitted power, dimensions of the unit and certain mechanisms. This results in different belt types and sizes for power tillers and tractors.

How to know what belts are on your power tiller??

In most cases, both domestic and imported manufacturers install a single-axle tractor V-belt. To find out which belts are on your power tiller, you need to remove the protective cover. There is usually a marking on the non-working side of the belt. That is how you can see the V-belt profile and size.

The main dimensions of belts for power tillers in the table:

Power tiller belts

Power tiller drive belts are subject to constant mechanical stress. Because of the high frictional loads even high quality power tiller belts eventually wear out. Even gentle use does not prevent wear and tear. But of course, careful use of your machine will extend its service life.

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There are several reasons why timing belts for power tillers and tractors fail very quickly. The first and foremost problem is the mechanical stresses acting on the belt. In other words, every belt is subject to natural frictional processes. However, there are also a number of other causes that lead to rapid wear and tear:

Mechanical damage (Cuts, tears)

The installation of a defective or faulty belt.

Realignment of pulleys that results in misalignment.

The first characteristic signs of belt wear on a power tiller are all kinds of extraneous sounds: squeaking, whistling or other sounds coming from the drive. You can also determine the degree of wear visually by looking at the overall condition of the belt. A worn belt will have cracks, tears, or worn areas on its surface.

You should, of course, always check for signs of wear and tear. This will not only protect the mechanism from breakage in case of a sudden belt breakage, but also protect yourself from the loss of time and money associated with the downtime of the equipment. Of course, it will be useful to buy a belt for a power tiller in reserve. Especially since the price of a belt for a power tiller is very low.

Replacing the belt on a power tiller

Replacing the belt on a power tiller is fairly easy. This process doesn’t require much effort or skill. Of course, depending on the specific model of the unit, certain actions may differ slightly. But in general, removing old and installing new belts on any type of single axle tractor is done almost identically in just a few minutes.

(Question picture) How to change the belt on a power tiller?

If necessary, remove the engine pulley

Putting the new belt on the pulley

On some models, you can loosen the tension in the motorblock drive belt by adjusting the position of the motor. By moving it backward or forward it is possible to loosen or tighten the belt. Depending on the stroke of the engine, you can replace the motorblock belt with a slightly larger product. For example, 1250 millimeters is the place of 1219 millimeters.

Driving belts on power tillers are one of the most important parts, because it is through them that the force from the motor is transmitted. Their unsuitable condition or improper tensioning leads to poor tillage quality and may cause the machine to break down.

The main reasons why the product quickly loses its usefulness:

  • Various cracks, cuts, and abrasions that occur over time during operation;
  • improper pulley placement. If the pulleys are not on the same level. the product will bend and very soon will fray;
  • improper installation;
  • The low factory quality of the product.

It’s also worth carefully watching the location of the belts on your Cascade power harvester after reinstalling the engine. it may be necessary to align the pulleys along the axes of the grooves.

If your single-axle tractor is not subject to serious loads, it is advisable to loosen the belt tension rollers. This will significantly extend its service life.

There are not so many models of Permian Cascade power tillers on the market. And the more difficult is the maintenance of this type of equipment, because all the components need to be selected clearly for a particular type of equipment. After all, even belts from motoblocks of the same company, but different models, can differ significantly. But such an alternative will result in a rapid deterioration of the parts and, possibly, in the breakdown of the power tiller.

Particulars of driving belts replacement

Tightening the device, you should follow the algorithm:

  • remove the belt guard;
  • Unscrew the guide pulley;
  • Remove the running V-belt by first loosening the ties;
  • Install a new product.

Carry out all further reassembly in reverse order, and when tensioning the belt itself, leave a gap of at least 3 mm between the rubber and the tooling. If one item is worn and the other is in good condition, replace both items.

Installation of the second element will ensure the longevity of the new product.

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