What is the gap on the candle of the gas trimmer. What will happen if you reduce the gap in the spark plug?

candle, trimmer, happen, spark

What gap should be between the electrodes of the candle?

The normal gap of the spark plug depends on the structural features of the engine: for “classic” carburetor cars-0.5-0.6 mm; for carburetor machines with an electronic ignition of 0.7-0.8 mm; for injector.1. 1.3 mm.

If the candles fail, then they need to be replaced with new ones, having previously cleansed the place of their fastening with dry and clean rags. After installing new candles, the gap must also be checked and controlled.

Features of adjustment on different models of trimmers

Operating principle

When the flywheel rotates, an electric current is generated in Magneto, which creates a spark on the spark plug at the moment when magnets pass under the coil.

Before starting the ignition of the trimmer, you need to cut off other probable causes of breakdown and make sure that the problem is really in this node. For this, it is necessary to carry out a number of actions in the following sequence:

  • Inspect the ignition coil body for damage and defects;
  • Make sure that there are no pollution on all nodes and elements conducting current;
  • Check the integrity and isolation of the wiring, contacts, the strength of the fastening, the presence of rust at the joints;
  • Inspect the candle cap, as it regularly breaks away from the high.Voltage wire, and they try to restore it manually, and any unreliable connection lowers the power of the electric arc of the candle;
  • Check the candle, since the quality of modern gasoline very quickly disables this part, but there is another possible problem. The candle is wet;
  • Make sure the circuit switch is working.

By excluding all possible malfunctions, you can proceed to adjust the ignition of the coil.

Why do you need a good spark.

The insidiousness of such a breakdown is that the diagnosis below does not give one hundred percent confidence in the effectiveness of the ignition coil. Such an implicit breakdown when there is a spark, but this is not entirely correct, often misleads and makes you write off problems with the ignition coil with a malfunction of the carburetor.

See also  What grease to use for grass trimmer gears

Typical actions in such cases are an increase in fuel supply. It turns out that the spark can ignite such a spark, but it does not have the right. But the use of an enriched mixture leads to the Rapid wear of the cylinder.Piston group and muffler. Therefore, in such controversial situations, check both the carburetor and the ignition reel.

candle, trimmer, happen, spark

The insidiousness of such a breakdown is that the diagnosis below does not give one hundred percent confidence in the effectiveness of the ignition coil. Such an implicit breakdown when there is a spark, but this is not entirely correct, often misleads and makes you write off problems with the ignition coil with a malfunction of the carburetor.

What is required

  • Flat screwdriver
  • Candle The key is 19 Or pliers
  • Spend of the ignition (use the operating manual for the selection)

Find a black plastic casing with protrusions on the trimmer case. There should be enough fingers to relieve plastic, but instead you can use a flat screwdriver.

Raise and separate the black plastic lining of the ridge from the spark plug.

With the help of a candle key, turn the spark plug counterclockwise until it weakens and remove it. You can use pliers to remove the spark plug, if you do not have a candle key.

Insert a new spark plug and turn it with your hand clockwise until it stops.

candle, trimmer, happen, spark

Use a candle key or pliers to tighten the spark plug clockwise to ensure a tight landing.

Attach the lower part of the plastic cover to the upper part of the spark plug. Press on the lid. Non.Pressure pressure is enough.

Replacing the spark plug of the trimmer completed.

Best Spark Plug Design? Let’s find out! E3, Pulstar, Racing & Platinum


Subscribe to ours Telegram. To be the first to learn about new articles on the site.

What should be the gap in the spark plugs?

The normal gap of the spark plug depends on the structural features of the engine: for “classic” carburetor cars-0.5-0.6 mm; for carburetor machines with an electronic ignition of 0.7-0.8 mm; for injector.1.1.3 mm.

If all parts of the ignition system work correctly, then the candle stably gives out a spark that ignites the fuel.Air mixture in the carburetor. The manufacturer’s instructions agree, the optimal gap is exhibited on the spark plug from the plant. 0.5 mm. Here is a screenshot from the official instructions from the chainsaw.

Influence of the gap on ignition

To understand how this factor affects the effectiveness of the gasoline engine, you need to briefly consider the operation of the ignition system. The algorithm for converting fuel energy into mechanical work looks like this:

  • Throwing out the spent gases through the valve in the GBC, the piston moves down. When it finds himself at the bottom point, the second valve opens, from where the fuel mixture enters the cylinder.
  • The piston rises to the combustion chamber and compresses this aerosol several times.
  • At the moment when the bottom of the piston is at the upper dead point, a high.Voltage impulse is supplied to the candle electrodes. A spark slides between them, setting a compressed compressed mixture of fuel with air.
  • Burning at a certain speed, fuel releases energy pushing the piston down. Mechanical work is performed.
  • The last tact is the release of combustion products into the exhaust system, after which the cycle is repeated.
See also  How to Insert a Spring Into a Trimmer Starter

How To Gap Spark Plugs Precisely

High voltage pulse (over 20 kilovolts) produces a coil at the signal of the controller. Its winding is designed for the sparking of a certain force sufficient for high.Quality ignition of a portion of the fuel mixture. If you make too large or small gap in the spark plugs, the combustion process will be violated.

Large clearance between electrodes

The gap of more than 1.3 mm is considered to be largely large. What will happen if you straighten the electrodes to such an extent:

  • The power of the coil is not enough to make a spark with a spark with a spark with each compression tact, the passes of the cycles will appear;
  • The work of the power unit will be unstable, vibration will appear;
  • One part of the unsuccessful gasoline drains along the walls of the cylinder and will get into the crankcase, the second will be thrown into the exhaust tract;
  • Fuel consumption will increase;
  • On the walls of the combustion chamber, the bottom of the piston and working elements of the spark plugs quickly formed.

As a result of the listed processes, the motor will not give full power, and the cylinder.Piston group in the long run will be out of the long run. Too much gap affects the quality of fuel burning, you will feel it in the process of movement: the acceleration of the car will be sluggish, and the vibration of the motor will be increased. Due to the passage of the cycles, there will be problems with a cold launch-the engine will start from several attempts.

Too small interelectrodic distance

The distance between the contacts of candles less than 0.6 mm is considered unacceptable to small. True, the omissions of the working cycles will not be observed, but another problem will arise. Too weak ignition. A short spark, breaking through a small clearance from one electrode to another, is not able to normally set fire to the fuel.Air mixture that occupies the entire volume of the camera.

candle, trimmer, happen, spark

Due to the decrease in the combustion rate, the air-Benzine aerosol does not have time to burn out entirely, as the tact of the piston’s work move, and then the release of the exhaust gas. As a result, the consequences described above occur. A fall in the power of the power unit, increased fuel consumption, soot in the exhaust and soot inside the cylinders.

See also  Can be mowed with an electric trimmer after rain

Incorrect adjustment of the gap of spark plugs is often aggravated by other factors: wear of the piston group, malfunction in the fuel supply system, broken insulation of high.Voltage wires, and so on. Then the problem of setting gaps recedes into the background and often falls out of the field of view of the motorist.

Do I need to adjust the gap on new candles?

If a candles They are out of order need Replace with new ones, having previously cleansed their fastening place with dry and pure rags. After installation new candles gap It is also necessary to check and control.

How to check spark on Candle of the chainsaw And very simple. Again, turn candle, We put on a high.Voltage wire on it and provide reliable contact of the case spark plug (that is, its skirts, where the thread is) with the cylinder block. After that we pull the starter’s hand as when starting. You must clearly see a spark.

How to check a spark on a candle trimmer?

Small gap If a In the design, the naked eye is observed Reducing the clearance of the candle ignition, spark will Strong, but not so much that a combustible mixture flashes. Therefore, as in the previous case, there will also be passes, which entails the above problems.

Weedeater not starting due to fouled spark plugs