2024 Author: Beatrice Philips | [email protected]. Last modified: 2023-12-16 05:33
To cut grass on a small lawn, it is not necessary to purchase an expensive and bulky lawn mower; it can be easily replaced by a gasoline / electric trimmer. The device of these machines is quite simple, they are easy to use and unpretentious in maintenance. But sometimes problems do happen. One of them - when the trimmer does not develop the maximum number of revolutions - will be discussed in this article.
Causes
Trimmers are reliable and durable (provided they are properly maintained, of course). Most often, malfunctions occur due to contamination of structural elements.
If the engine of your petrol cutter does not start, does not pick up speed, does not reach the power you need, or suddenly stalls, the reason may be:
- low-quality fuel (fuel mixture), the case may be in long-term storage or in non-compliance with the recipe for preparing the mixture;
- grass is wrapped around the shaft of the fishing line / knife;
- clogged air filter / muffler;
- unbalanced carburetor.
Troubleshooting methods
The first three reasons are fairly easy to eliminate. If the matter is in the mixture, you need to pour out the old fuel from the tank, prepare a new emulsion from high-quality gasoline and engine oil (if your engine requires a mixture) and pour it into the fuel tank. If the trimmer is running on clean gasoline, it's even easier.
In the second case, you must carefully free the trimmer parts from the wrapped grass.
If the filter is clogged, you can try rinsing it. If this procedure does not work, replace it with a new one.
The last reason why the brushcutter does not work properly will require a little more knowledge and skill from you.
In order to properly adjust the carburetor of the brushcutters, a certain procedure must be followed . First, clean the air filter thoroughly. The easiest way is to rinse it (it is advisable to sprinkle water on the filter regularly after 9-10 hours of operation).
After that, in the diagram of your trimmer, which is in the instruction manual of the device, find the adjustment screws. There are usually three of them: the first is responsible for the fuel supply, the second is for idling, and the third is designed to limit the number of maximum engine speed.
Next, you should turn on the unit and wait for the engine to warm up.
Tighten the first (fuel mixture) adjusting screw slowly. Catch the moment when the motor starts to stall and turn the propeller back 45 degrees . If you do not have time and the motor stalled, the screw should be turned 90 degrees. Open the throttle and watch the revs increase. Next, you should slowly unscrew the screw (each turn is the same 45 degrees) until the moment when, at full throttle, the engine begins to firmly give out maximum revolutions.
The second screw, as mentioned above, controls the engine idle speed. By loosening it, you decrease the number of revolutions, while twisting it, you increase it. The screw needs to be adjusted so that the motor runs reliably at low revs. For better starting, speed up the engine slightly. At the same time, make sure that the motor makes several tens of revolutions before the start of the movement of the knives / line reel. If the engine starts poorly, tighten the screw a little.
After you have adjusted the first two screws, test the operation of the device at the maximum engine speed. If necessary, you can limit it (maximum) - this will protect the motor from "boiling". To do this, you need to tackle the third screw. Unscrew the locking nut until the adjusting screw can be safely turned. To increase the maximum number of revolutions, the screw must be loosened; to decrease, on the contrary, tighten . Fix the position of the screw with a nut. Test the motor again.
Regularly check the position of the screws - the high level of vibration inherent in brushcutters can cause them to move unintentionally.
Remember that carburetor adjustment is not a final procedure . During the operation of the brushcutter, you will most likely have to tinker with it more than once, because an unbalanced carburetor means both increased fuel consumption and a quick failure of the spark plugs, not to mention a decrease in the power and performance of the device.
Little tricks
- If you are unable to tighten / loosen the adjusting screws properly, it may be that the spring is too thick and stiff. Then you can choose a more suitable one instead.
- If your unit does not need pure gasoline, but its mixture with engine oil, strictly observe the proportions specified in the operating instructions. There is one little thing: the recommended ratio is 1: 25 (for all brands of oil) or 1: 50 (for "native" oils). Try the first ratio first. If, with such a recipe, oil drips appear on the motor, and a strong carbon deposit forms on the candle, reduce the proportion of oil by half. This usually helps to fade traces and reduce the amount of carbon deposits.
- To clean the spark plug electrodes from combustion products, you can use fine-grained "sandpaper". Wipe them down with a dry cloth first, then gently sand them off with sandpaper. If the space between the body of the device and the insulator is also clogged, a regular, unbent paper clip can help clean it. To do this, briefly soak the candle in diesel fuel, and then scrape off the dirt. If the blockage is small, one procedure is sufficient. Sometimes it is necessary to repeat it several times in case of heavy dirt. After complete cleaning, the candle must be wiped dry from diesel residues, and then it can be used as intended.
- Please note that a brushcutter (gasoline, electric or battery) of foreign production requires a little more maintenance than domestic ones. In particular, many strongly recommend entrusting the adjustment of the carburetor of a two-stroke engine to professionals, especially if your purchase has not expired the warranty period.
- And finally, one more tip: follow all the manufacturer's recommendations for the operation and maintenance of the device. This will prolong its smooth operation.
You will learn more about what to do if the petrol trimmer is not picking up speed.
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