Valve Clearance On The Tiller

How to set up on the Tiller Agro

The valves on the Agro tiller are adjusted as follows:

  • We warm up the engine, after which we give it some time to cool down.
  • Remove the air filter oil bath.
  • Next, you need to unscrew the flywheel casing, mounted on 6 bolts.
  • The flywheel is marked with 0 (top dead center), 5, 10 and 20 (fuel injection). We compare the dead center of the flywheel with the mark located on the cylinder so that they are opposite each other.
  • Next, remove the valve cover.
  • There are two valves under it. Loosen the lock nut, then insert the razor blade under the valve. The blade must pass freely between the piston and the valve.
  • Having achieved this, we tighten the nut back. Then we replace the valve cover and the flywheel housing.

So, if necessary, you can use the identical scheme.

Step-by-step instructions for different models

How to set up on the Tiller Agro

The valves on the Agro tiller are adjusted as follows:

  • We warm up the engine, after which we give it some time to cool down.
  • Remove the air filter oil bath.
  • Next, you need to unscrew the flywheel casing, mounted on 6 bolts.
  • The flywheel is marked with 0 (top dead center), 5, 10 and 20 (fuel injection). We compare the dead center of the flywheel with the mark located on the cylinder so that they are opposite each other.
  • Next, remove the valve cover.
  • There are two valves under it. Loosen the lock nut, then insert the razor blade under the valve. The blade must pass freely between the piston and the valve.
  • Having achieved this, we tighten the nut back. Then we replace the valve cover and the flywheel housing.
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So, if necessary, you can use the identical scheme.

Required tools

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

With these simple tools, you can adjust most carburetors.

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

How to adjust the valves on the tiller read all the nuances

Valve Clearance On The Tiller

A vehicle called a tiller is a vehicle that, when equipped with various attachments, can perform various agricultural work.

Tiller carburetor adjustment

The instability of the tiller engine speed indicates that the carburetor needs adjustment. The need to perform this procedure, as a rule, arises before the start of the growing season, when the equipment has not been used for a long time, or after it, when the tiller has been subjected to significant loads for a long period of time.
Before proceeding with the adjustment, it is necessary to warm up the engine. The work process itself looks like this:

  • The screws regulating low and maximum throttle are screwed in completely, after which they are loosened by about one and a half turns.
  • The motor starts and warms up for about 10 minutes.
  • The lever that controls the operation of the power plant should be set to the minimum position, but the motor should not stop.
  • The throttle throttle adjusting screw will help to adjust the minimum idle speed so that the motor is stable, without extraneous noise and stops.
  • The rotation of the screws makes it possible to precisely set the amount of combustible mixture that enters the motor.
  • Tightening the screw contributes to the enrichment of the mixture, while unscrewing it, on the contrary, increases the volume of air entering the engine;
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Using the idle screw, adjust the maximum idle speed. Proceed in the same way with minimum speed, using the throttle stop screw. The essence of such an adjustment is that the shutter screw allows you to adjust the angle to which it is closed;

The lever responsible for controlling the motor should be moved to the position “gas”. If the tiller still cannot be called stable, the full throttle screw is adjusted until ideal travel is observed. However, the maximum permissible screw speed is 2.5.

The accuracy of carburetor adjustment can also be determined by how the spark plug looks after a short period of time under load. If the working mixture is ideal, then there will be no carbon deposits on the candle, no traces of fuel, which indicate too poor, or, conversely, too rich combustible mixture. It should be noted, however, that carbon deposits or traces of fuel on the spark plug may indicate not only incorrect adjustment, but also more serious problems of the tiller, including faulty ignition or cooling system.

Tiller valve clearance adjustment

Over time, with significant loads, the valve clearance of the tiller engine changes. This may be due to wear on parts. Insufficient distance leads to the fact that the stages of gas distribution change significantly, as a result of which it is not possible to achieve a sufficient compression ratio, the power plant works intermittently and does not reach the declared power. In particularly serious situations, even deformation of the valves can be observed. If the gap is too large, significant mechanical noises are recorded, the gas distribution phases also change significantly, the valves open for too short a time, due to which the cylinder does not fill properly, the power drops, and failures occur. Clearance adjustment is necessary as soon as the engine operation becomes incorrect or occurs with significant noise. Ideally, the engine being adjusted should be cooled down.

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So, first you need to get to the flywheel. It is on this part that the value of the top dead center is marked. The flywheel is hidden under the cover, and therefore will have to be removed. Before removing the casing, the oil bath of the air filter is removed. It is possible to facilitate the task in the process of removing the casing if you fix all the latches with rubber bands. All bolted connections are unscrewed with a key, after which the cover can be removed without problems.

On the flywheel, you can see marks that indicate TDC, as well as values ​​of 5, 10 and 20 degrees. The 20 degree mark indicates the injection of the combustible mixture. The flywheel should be brought under the top dead center, focusing on the appropriate division. The valve cover is unscrewed and removed.

In the process of adjustment, you need to use the following tools:

  • Screwdriver;
  • Box key for 10;
  • Blade 0.1 mm thick.

According to the technical data sheet, the valve clearance of the tiller engine is from 0.1 to 0.15 millimeters, and therefore with the help of a blade it can be adjusted very precisely. However, you need to pay attention to the fact that some blades are 0.8 mm thick, which is unacceptable. The exact value can be found with a micrometer or from the information on the manufacturer’s website. The adjustment is done as follows:

  • Screwdriver;
  • We loosen the nut, insert the blade and begin to tighten;
  • You should focus on the blade, carefully tightening the nut;
  • The adjustment is carried out until the valve free travel is eliminated. It should fit snugly enough.
  • In the reverse order, we assemble the casing, put the oil bath in place.

If all manipulations are carried out without errors, then the engine will run smoothly and without unnecessary noise.