Is it possible to repair benzokosy perform independently?

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Contents of the article:


cutting knives

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engine, has fine tuning. Repair benzokosy should be entrusted to a specialist or to study the technique itself, using the instruction manual. Maintenance spit lead is necessary. Gearbox lubrication, replacement of the fishing line, sharpening of the teeth can be done on their own.

Failures of the gas cutters and ways to eliminate them

Any type of gas mower has a hollow rod in which a connecting cable is placed between the motor shaft and the lower gearbox, transmitting the rotation to the working body with the cutting tool. In the upper part there is a carburetor and a motor, at the bottom there is a gearbox and a working tool, covered with a casing. In the middle part there is a transverse handle in which the control buttons are located. For unloading of hands, there is a discharge belt holding the bar by the operator’s torso.

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When choosing benzokosy preferable apparatus with a two-stroke engine, rather than four-stroke. The two-stroke engine is more maneuverable and easier to repair. With a four-stroke knot, vibration is lower.

They follow this, repairing the gas mowers is to troubleshoot;

  • engine does not start;
  • cutting mechanism is not gaining momentum;
  • engine stalls;
  • heated gear;
  • heard extraneous knock, strong vibration of the rod.

Before troubleshooting, you need to diagnose, identify an inoperative node.

It is important to know the tool lubrication points. Continuous care, cleaning the device after work will extend its life. Before work, tighten the mounting bolts, prepare fuel and fill the tank.

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Chainsaw engine does not start

If the mechanism does not start, stalls immediately, check the following:

  • is there fuel in the tank;
  • serviceability of the spark plug;
  • clean air and fuel filter;
  • purity breather and outlet.

Fill with a freshly prepared mixture based on AI-92, the oil is injected for accurate dosing with a medical syringe. This will help avoid expensive chainsaw repair.

It is necessary to make sure that the candle is working, giving a spark in contact with the body. In this case, it is necessary to dry the candle channel, clean and dry the part itself. You can change the candle, but the channel still needs to be dried for 40 minutes. Check the serviceability of the high-voltage wire, may not always have a contact. Malfunction in the ignition unit during the repair of gasoline mowers, do not fix it yourself.

If the engine is not stalling when the air filter is removed, the reason is that it needs to be replaced or cleaned. Replace the filter on the fuel lead with great care. After checking the purity of the breather, remove the silencer net and clean the exhaust channel.

The next step will be to repair the carburetor, where you have to find a problem and fix it, taking into account the tiny dimensions of the parts. If the simplest operations have not brought results, in order not to disturb the fine-tuning of the system, the repair is better to entrust to a specialist. How to start the diagnosis and how to repair the gas mowers with your own hands, see the video:

Repair and lubrication of the gearbox

gasoline truck The role of the gearbox is to transfer torque from the motor shaft to the cutting tool through 2 gears with different number of teeth. The torque is transmitted at an angle of 30. The number of revolutions of the lower cutting disk is 1.4 times smaller than the engine revolutions. Gears must be clean and lubricated. To feed the oil on the teeth there is a screw hole on top

The lubrication of the gas cutter gearbox is performed at least once per season. If the work is intense or there is extraneous noise in the lower node, it is necessary to lubricate more often.

At first, the place where the cork closes the hole should be cleared of earth and grass. Unscrew the plug with an appropriate tool, it is included with the saw. We use grease from a tube. Choosing either a native lubricant from the manufacturer, or well-known quality compounds, such as Oleo-Mas, Litol -24, Azmol 158. Open the protective layer of the tube and lay the tool on its side. Slowly rotating the knife, squeeze the lubricant into the gearbox housing. The gears, turning, spread the composition with teeth on the entire surface. You can also pour grease with a special syringe.


Lack of or large amounts of lubricant can cause the gearbox to heat up. Heard knock and backlash signal the destruction of the bearing or the ingress of dirt due to damage to the anthers. Bearing replacement must be carried out using a puller, without using the warm-up method.

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If the gearbox staggers and drives a bar, you need to replace the case, or pull the assembly with a temporary clamp to secure it to the pipe. If the knife has ceased to rotate, it means that the gears do not engage - the teeth have been torn down or spilled. You will need to replace the pair with a complete analysis of the site.

Disassembly of the gearbox with disassembly of the shaft and bearing assemblies cannot be carried out by heating. When heated, the metal loses its strength properties and further the node becomes unreliable. To remove the bearings use a puller.

When replacing the gearbox, it is necessary to select a new unit, guided by:

  • pipe diameter;
  • drive shaft diameter;
  • drive shaft section;
  • fastening method of protection
Work with the tool becomes tense, the load increases, the quality of the swath deteriorates. Metal saw blades sharpen, plastic change.

If the cutting tool is a fishing line, it gradually wears out and a new material is inserted into the coil. The principle of the cutter with the fishing line is concluded in the gradual unwinding of the coil under the action of centrifugal force. When in contact with grass, the line wears off, and is fed gradually from the reel. Special winding is needed so that the two cutting elements come out simultaneously and not be confused with each other.

The figure shows how to wind the line on the reel of the benzos. Before reeling a new line it is necessary: ​​

  • unscrewing the nozzle, carefully remove the cover, holding the spring with your hand;
  • from the reel to remove scraps of old fishing line;
  • measure 5 meters of the new string and fold it in half;
  • in the coil guides under 2 ends, hook the middle part of the notch and wind in the direction of the arrows for each half of the string;
  • hold the remaining 20 cm through special notches at opposite ends of the coil;
  • install the spring and washers, bring the ends of the fishing line out, close the drum cover.

In order to better learn how to change the line on the benzocos, watch the video.

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