How To Adjust The Carburetor On The Lifan Tiller

How to adjust the valves on the tiller: adjusting and tuning the diesel Lifan and Neva MB-2 with an American engine
How the tiller valves are adjusted. What is the specificity of adjusting different models, and also how they are similar. Step by step instructions.

How to adjust the valves on the tiller: adjusting and tuning the diesel Lifan and Neva MB-2 with an American engine

Tillery for plowing land known to many since Soviet times. This means of small-scale mechanization perfectly copes with this task, greatly simplifying the work of a person.

If we take into account that additional attachments can be installed on this unit, then in fact all the work on the site is within his power.

In addition, the adjustment of the various components that are responsible for performance plays an important role. In particular, we are talking about adjusting the carburetor valves, the correctness of which will depend on the stability of the engine.

Carburetor Tiller

Concerning carburetor, it is part of the engine power system. It acts as a kind of mixer that mixes liquid fuel with air to obtain a fuel mixture, which then enters the engine cylinders. Structurally, it looks like this:

  • Float chamber;
  • Diffuser;
  • Spray;
  • Throttle and air dampers;
  • Mixing chamber;
  • Jet, etc.

It description of standard carburetor, but different tiller models such as Huter, Profi, Plowman, Champion, Carver, Husqvarna can use different carburetors, respectively, and the adjustment will be different.

Required tools

To adjust the carburetor valves, a minimum list of handy tools is required:

  • Razor blade or dipstick;
  • Minus screwdriver;
  • Spanner key.

With these simple tools most carburettors can be adjusted.

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It is important to understand that adjusting the valves means setting the optimal clearance, which is directly prescribed in the operating instructions for each specific model.

Types and methods of carburetor adjustment

As you know, the tiller, like many other units of this type, is powered by an engine. Because the engine cannot ignite without oxygen supply, a carburetor is required. For the tiller, two types of carburetors are used. One of them is rotary, the other is plunger. Naturally, each of these types has its own advantages and disadvantages, the choice depends on the tiller, his performance and the type of work performed.

There are times when there are abnormalities in the operation of the carburetor (the process is unstable). In such a situation, the carburetor needs adjustment. How do I adjust the carburetor on the tiller? It is quite possible to do it yourself, following a certain sequence of actions.

  1. First, you need to turn the screws (full and low throttle) until they stop. Then turn them one and a half turns.
  2. Start the engine, give it time to start and warm up.
  3. Do not stop the engine and place the engine control lever in the lowest speed mode.
  4. Next, set the minimum number of revolutions when the device is stable.
  5. Then run idle to maximum.
  6. Shift idle to minimum. Repeat this step, alternating with the previous one, until the engine runs smoothly.
  7. Move the control lever to the throttle position.

Following this instruction, you can independently adjust the tiller carburetor.

Tiller carburetor: adjustment, repair, maintenance

The carburetor is the element of the tiller that is necessary to control the flow of air and fuel.

Thus, the optimization of the motor operation is carried out at a stable load. Like any mechanism, the carburetor needs proper care.

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Carburetor care, replacement and repair

how to adjust the carburetor on the Lifan tiller

Sometimes, in order to bring the carburetor for a tiller into a stable, working condition, there is not enough adjustment, repair or replacement is necessary.

It so happens that the carburetor air damper does not close completely. To eliminate this problem, check the operation of the drive. If jamming is found, remove it. Over, given that the carburetor provides fuel and, therefore, drives the tiller itself, you should carefully monitor the condition of this part and take proper care of it.

To avoid serious damage to the carburetor, you must constantly monitor its operation. In addition to adjusting idle speed, you need to regularly clean the carburetor and replace worn parts. Since the carburetor interacts with the fuel mixture and air, the cause of its contamination can be in either the first or second source.

The main principles of tuning the tiller carburetor

Tillery is a category of technology that has made life much easier for modern farmers. It greatly simplifies the process of carrying out various work on the farm and is practical in use. Let’s find out more about how the carburetor is adjusted on the Lifan tiller!

Setting up this critical element is straightforward. To do this, you need to adhere to the basic points, which are described below:

Warm up the engine before starting adjustments.

Wait about 5 minutes and screw in the maximum and minimum throttle screws until they stop.

Unscrew each of them no more than 1.5 turns.

Place the gear shift lever in the lowest possible travel position (with the engine running continuously).

Turn off the internal combustion engine and start it again, and as a result, you should immediately notice a tangible difference. An increase in the noiselessness of work, its uninterrupted operation.

Everything is extremely simple and straightforward. Experts recommend adjusting the tiller carburetor before each season. It should be noted that loosening the bolts allows you to enrich the fuel with oxygen, which is necessary for the stable operation of the internal combustion engine.

Idle speed adjustment

After that, it is important to check the spark plugs and, if necessary, adjust the ignition. Usually, spark plugs accumulate dirt and carbon deposits, and sometimes fuel residues. Idling adjustments should also be done with care.

The procedure is as follows:

Loosen the screws for the high-quality idle speed adjustment by 1 part turn.

Warm up the motor for 3 minutes.

It is required to screw in the screws as slowly as possible.

Check engine operation.

This procedure will stabilize the engine, as well as completely eliminate possible “dips” in its speed.

It should also be noted that it is required to perform all procedures as carefully as possible. Try to screw in and out the screws smoothly, not abruptly. If the bolts are pulled out suddenly, the motor will be overloaded the first time it is started. In addition, it should be noted that if you do not know any features of the device of your Lifan 168 tiller or any other, read the instruction manual in advance.

Features of carburetor adjustment “Lifan”

Carburetor adjustment in Lifan tillers, as well as in any other types of equipment, has its own characteristics. It is in demand in cases where it is required to return the unit to work or to configure it correctly. It is the carburetor that often becomes the cause of other malfunctions throughout the tiller. If it can be fixed, good. Otherwise, you will need spare parts for Lifan engines of all series.

The principle of regulating the carburetor for all models is almost the same. A distinctive feature can be the number of revolutions. If any signs of a malfunction occur, you should take a closer look at this unit and adjust the carburetor for its better performance. If you don’t know how to adjust the carburetor, this article will be very helpful.

Carburetor repair Tiller Mole

The Tiller Mole carburetor was made in Soviet times. Despite the fact that the Soviet industry was famous for its high level of performance and reliability, this carburetor still had several flaws. To understand them, you first need to make a complete analysis of them into their components:

  • Remove the cover by unscrewing the bolt on it. Under it we find a gasket made of a petrol-resistant material, as well as a spring that must be pulled out.
  • We take out the flap, which is in the same place, under the lid.
  • On the back there is a float chamber, which also needs to be unscrewed. Remove the gasket.
  • Then it is necessary to remove the float by removing the pin from the corresponding hole. A special needle is found under the float, which also needs to be removed. On it, we find a small elastic band, which in no case should be lost, so we carry out all the manipulations extremely carefully.
  • We unscrew the fitting, under which the gasoline filter is located.
  • Then you need to remove the jet. After that, we need to pull out absolutely all the “insides” located in the carburetor body.
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Such disassembly is necessary, after all, we get access to the internal content, which is considered the most problematic.

In other words, we turn this screw, and the mixture does not change, it remains constantly unchanged.

To change this, you need to make certain repairs to the carburetor located inside the Mole tiller. The main reason for problems with mixture regulation is one thing. The fact is that inside the carburetor there is a special channel that goes to the tube located in the center of the carburetor.

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In this pipe, in theory, there should be a through hole connecting this very channel. The problem is that on some factory units this pipe is put obliquely, which leads to the fact that the channel and the hole on the pipe do not match.

There are times that on the pipe this hole is completely absent, or it is of insufficient diameter. To make repairs, we need to perform several sequential steps:

  • Unscrew both adjusting screws. Pay attention to the fact that the screws have different taper. The screw of the mixture quality has a larger taper.
  • To pull out the pipe that is inside, we need to slightly heat the part of it that is outside. To do this, you can use a small fire on a gas stove, or heat it up with an ordinary lighter.
  • We warm up until it can hold the body in the hands. After that, we push the pin into the hole where the cover bolt was located.
  • Using a hammer, carefully hit the inserted studs until the pipe pops out.
  • As practice shows, the hole is drilled on only one side of the pipe, those. It is not end-to-end. We need to make a symmetrical hole on the other side of this tube, or modify the one that is.
  • If there is a second hole, but it is of a smaller diameter than the first, then we need to refine it a little. To do this, use a regular round file, bore the edges of the hole.
  • Then we put the tube back in place. This must be done in such a way that the through hole on it and the hole on the channel exactly match.
  • Before inserting the tube into place, you need to heat the carburetor body a little again, so that she entered without problems in her place.
  • We insert the tube into place and using the same hairpin with which we pushed out the pipe, insert it into place. We knock lightly so that the pipe does not go far inward. From the back side we should see a hole located just above the through one, which should coincide with the channel.
  • It is necessary to ensure that the hole is exactly in the center.
  • We take a dense wire and insert it into the channel hole. If everything is done correctly, then the wire should freely pass further, through the through hole on the pipe, and out of it into the continuation of the carburetor channel.
  • If the wire rested, then you need to knock on the hairpin a little more, pushing the pipe a little further.
  • Next you need reassemble the carburetor in reverse order.
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This is the whole process of the necessary changes in the design of the carburetor. Thanks to them, the adjusting screw fully fulfills its duties to change the quality, which, in fact, was required of it.

Device

Tiller Mole is a fairly typical design without the use of frills. This Tiller model began to be produced in 1983, but then the production of this unit expanded, so they began to be produced also in Omsk.

They were equipped with factory engines, the power of which did not exceed 2.6 hp. It is attached, like the gearbox, to the frame with ordinary bolts. The declared power was not always enough, so many owners of Krotov adapted to some alterations, changing the factory engine to more powerful models.

In general, the tiller Mole device looks like this:

  • Frame structure on which the combustion engine and gearbox are located.
  • The control levers, on which the clutch is located, as well as the engine speed regulator.
  • A wheelbase that allows the unit to move freely from place to place. During operation, these transport wheels are retracted.
  • Rotary tillers that slide onto the gearbox output shafts.

For more details about the tiller Mole, see:

As we see the design is very simple, which allows you to independently carry out repair work. And you may have to do this, because the factory engine does not always work in a stable mode.

The principle of operation of the tiller Mole is as follows. The torque is transmitted to the gearbox, and then to its two outgoing shafts through the V-belt. When the clutch is pressed, the belt is tensioned, driving the gearbox shaft.

This gearbox shaft, on which the cutting elements (soil milling cutters) are located, rotates around its axis, cutting off the soil crust, at the same time crushing and mixing it. Tiller moves along the surface of the earth with similar translational movements.

The set includes four rotary tillers, which need to be arranged in pairs, on each side of the shaft. By the way, it is possible to install six cutting elements at once, which improves the quality of the land cultivation.

The scope of this and other tillers, such as Cayman, Patriot, Texas, Prorab, Crossser, Viking, Forza, can be significantly expanded if additional attachments are attached to it. It is connected to the unit through a special bracket located behind the tiller.

Such equipment will have to be purchased separately, but thanks to it, an expanded scope of work opens up:

  • Transportation of goods of various weights;
  • Processing of inter-row spaces of beds;
  • Hilling and weeding of beds;
  • Making hay for livestock;
  • Planting and digging potato tubers;
  • Using a pump, you can water the beds, etc.

In other words, with the help of the tiller Mole, Sadko, Don, Huter, Profi, Plowman, Champion you can carry out virtually the entire list of agricultural work. This circumstance makes him an indispensable assistant for a villager who uses his garden to the fullest.

Adjusting the carburetor tiller K60V: how to adjust and clean the device

Tiller Mole is a means of small mechanization, designed directly for working with the ground. Its great popularity in our country is due to the fact that, at its low cost, it shows quite good technical characteristics.

These measures can significantly extend the operational life of the unit, without losing its working qualities.

One of the types of such service is carburetor adjustment, which must be carried out immediately after the end of the first season of work.