How to convert a single-axle tractor Agros on 92 gasoline

Switching to new fuel by adjusting the ignition advance angle

After performing all of these steps, you need to assemble the motor in reverse order. Be sure to make sure the key remains on the end of the crankshaft when doing this. When assembling the engine, tighten the flywheel nut with 16 kgf torque and secure it with a lock washer. Each of these operations must be carried out with a part of the element that is not crumpled.

The cylinder head (cylinder head hereafter) is the most important part in the construction of any gasoline engine that controls the combustion and venting process. It is located on top of the cylinders. The purpose of its milling is to reduce the size of the combustion chamber, which in turn will increase compression and compression needed to run on high-octane gasoline. The permitted degree of milling is 3.5 mm. This means if the conditional cylinder head is 95 mm on the powerpack, you should have 91.5 mm left after milling.

  • remove the cylinder head after consecutive disconnection of bolts and nuts;
  • remove the oil caps and oil scoops;
  • Remove the likely fouling, traces of oil and dirt with a solvent. the usual acetone or diesel fuel will do;
  • with a clean head, start milling. It is not necessary to look for a specialist miller. If you have an emery wheel at home, you can do it with your own hands. Given that the cylinder heads of most motor blocks are made of aluminum, not their cast iron, to create a perfectly flat surface of the set thickness it will have to be sanded with an additional sandpaper, attached to an even bar of wood or glass;
  • after the visible grooves have disappeared, you can proceed to polishing the working area of the valves.
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after cleaning the cooling fluid hoses from metal dust, you can install the cylinder-head to the required dimensions.

Мотоблок агрос.доработка ГБЦ под 92ой плюс ФАНТАСТИКА

convert, single-axle, tractor, agros, gasoline

In addition, to ensure greater reliability of the rework:

  • install the new caps and the valves themselves;
  • Replace the used cylinder-head gasket;
  • Take reliable bolt ties (e.g., 1.1 cm in diameter), which are tightened with a torque wrench so that the load on the connection was 7.5 kg/c. For larger diameter pins, this increases to 9.5 kg/s;
  • during the tightening process, make sure that the correct gaps of 0.3-0.35 mm between the outermost valves are maintained. For all others. it is acceptable up to 0,4 mm;
  • Considering that the cylinder head has shrunk in size, the native pushrod rods of the cultivator will no longer fit. Instead of them you need to put shorter ones.

After all the nuances are observed, assemble the engine part. Before starting the power tiller on 92-m fuel, check and, if necessary, clean the carburetor.

Method 1. How to move the engine with the ignition advance angle adjustment

We will demonstrate this method on the example of the engine UMZ-341. To switch the engine to the gasoline of the 92nd brand, you must replace the spark plug A11-3 with a spark plug A17B. And also after adjusting the ignition advance angle, for this you need to shift it exactly 2 degrees counterclockwise.

Stages of carrying out such a conversion:

  • Clean the gas tank of gasoline and drain it.
  • Start the engine and let it work out any excess fuel from the carburetor.
  • Remove the spark plug lug.
  • Now it is necessary to unscrew four bolts fixing the fan cover.
  • Remove the cowl.
  • At this stage you need to loosen flywheel nut.
  • Unscrew the nut.
  • Remove the ratchet, lock washer and nut.
  • Install flywheel puller. To do this, tighten the central bolt puller and hit it lightly with a hammer, remove the flywheel (important: when removing the flywheel blows on it are prohibited).
  • Find the ignition setting mark. It is applied by the producer during adjustment.
  • Take a screwdriver and loosen the magneto fastening. Then move its base to the left exactly 2 mm counter-clockwise.
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Then proceed to reassemble the engine, returning everything in its place. It is important to check the crankshaft key when reassembling. Flywheel nut mount should be tightened to a torque of 14-16 kgf/m and tighten the lock washer. It is necessary to use not crumpled part of the washer. Replace the spark plug with A17B. That’s actually the whole procedure. Everything is simple and understandable. And your engine will be ready to run on 92 grade gasoline.

We will demonstrate this method on the example of the engine UMZ-341. To convert your engine to 92-grade gasoline, replace the A11-3 spark plug with the A17B spark plug. And also after adjust the ignition advance angle, to do this, you need to shift it exactly 2 degrees counterclockwise.

The steps of carrying out this conversion:

  • Clean the gas tank from gasoline, drain it.
  • We start the engine and let it work out all the surplus fuel from the carburetor.
  • Removing the tip of the spark plug.
  • Now you need to unscrew the four bolts fixing the fan guard.
  • Remove the cover.
  • At this stage you need to loosen flywheel nut.
  • Unscrew the nut.
  • Remove the ratchet, lock washer and nut.
  • Installing a flywheel puller. To do this, tighten the central bolt puller and hit it lightly with a hammer, remove the flywheel (important: when removing the flywheel blows on it are prohibited).
  • Find the mark of ignition setting. It is applied by the manufacturer itself when adjusting.
  • Take a screwdriver and loosen the magneto mount. Then move its base to the left exactly 2 mm counter-clockwise.

Further we proceed to assembly of the engine, putting everything back to the places. It is important to check the crankshaft key when reassembling. In the flywheel nut mount should be tightened to a torque of 14-16 kgf / m and tighten the lock washer. Use a washer that is not jammed. Replace a spark plug with A17B. That’s actually the whole procedure. Everything is simple and straightforward. And your engine will be ready to work on 92 mark of gasoline.

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Owners reviews

“I didn’t buy my Agros as a new one. I don’t use it very often, because I also have a second single-axle tractor, with which I do all my work related to the garden. I have the Agro more for transportation, as a tractor and work force.

convert, single-axle, tractor, agros, gasoline

Advantages: good speed in 4th gear, enough power to use it as a snow blower. The most worthy single axle tractor along with MTZ and Motor-Sich.

Disadvantages: almost all owners sooner or later face breakage of half-axle wheel of onboard gearbox. The previous owner did, he changed it himself. So far, so good.”.

UMS 341 Repair Manual

Regardless of whether an imported single axle tractor Agro or domestic counterpart, it, like any other mechanism, over time may need repair. The device itself is used for tilling the ground, digging root crops such as parsley, radish, celery, carrots, etc.д. Also helps when raking, mowing grass, hauling fertilizer or small loads, watering, clearing snow, etc.п. Using a power tiller makes hard work with a shovel or other agricultural implement easier. The device also saves time for the farmer. Causes of failure of this unit may vary from simple to rather complicated in repairing. For example, bad engine starting, damage of mechanisms and units (stopping the PTO rotation or clogging of the gas tank lid opening), etc.

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