Why The Hot Trimmer Does Not Start Well

In general, such a conversation should start with the fact that after buying a garden gasoline tool it would be better to first familiarize yourself with the instructions attached to it. Then many problems could have been avoided. But since this happened the gas trimmer does not start, then we must look for sources of inoperability. And in this article we will consider the main reasons why the trimmer does not start with the example of the Elitech T750 model, as well as describe general recommendations for the operation of such a tool.

Start with the banal! We will figure out how to properly start a gas trimmer. It may be that the reason lies precisely here.

First you need to bring the red toggle switch on the trimmer bar to position “I”. This means turning on the power.

Why The Hot Trimmer Does Not Start Well

Then you need to switch the fuel supply lever on the carburetor and use the “suction” button of fuel (similar to a pipette, located on the carburetor). This is necessary to supply gasoline to the engine. Return the fuel supply lever to its original position. Finally, pull the starter handle toward you sharply. The trimmer should work. Try several times if the first time fails. If after such manipulations the situation has not changed and the gas trimmer does not start, then you should first examine it yourself before leading to the service center. There are two main reasons why a garden trimmer will not start:

  1. Violation of the power circuit.
  2. There is no fuel.
  • Let’s start with the ignition problems. In most cases, it is caused by the need to change the spark plug in the engine. It is done like this:
  • First of all, we must take care of security measures, make sure that the trimmer is turned off. We bring the above toggle switch to the “STOP” position.
  • Then remove the rubber protection from the plug and the wiring terminal. Using a special candle key, we unscrew the spark plug and replace it.
  • After that, we assemble the device and carry out the procedure for trimming the trimmer described above.

The second reason the garden tool doesn’t work is because the fuel has run out. On the Elinech T750, a fuel tank is located near the motor, but on most trimmers it is there. We unscrew the cap from the tank and fill it with gasoline (the most optimal option is the AI-92, it is inexpensive and does not clog the carburetor like the AI-76). Do not forget to add special engine oil to the tank, just 50 grams per gas tank is enough, without it the motor will begin to “sneeze” and will quickly become worthless. After we close the tank with a cap, wipe the surface of the trimmer and our hands with a dry cloth. We also do the above manipulations to turn on the garden tool.

If the gas trimmer does not start as before, then it makes sense to return it for repair. And the reason for this decision is simple. If you do not have the appropriate skills, repairing the equipment is almost impossible.

In order for the tool to serve as long as possible and there are no such malfunctions, you should, first of all, familiarize yourself with the instruction manual for the trimmer. Also, pay special attention to the operating time of the engine at the trimmer. Take a short break every 15 minutes of operation and, finally, properly care for the tool, wipe it after work, lubricate it with graphite grease. Observing such simple rules, you can significantly increase the life of the tool and it is quite possible that you do not have to look for reasons why the gas trimmer will not start.

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The tool, despite its small dimensions, is a complex technical device. If you study the operating instructions, it turns out the reasons why the lawn mowing does not start are known and can be eliminated. It is necessary to consistently eliminate factors that impede the launch of the tool. Usually start with more accessible nodes with easy health checks.


All the reasons why the lawn mowing does not start can be classified according to the specifics of the operation of individual nodes. In the service center, malfunctions are classified:

  • Engine malfunction (piston wear, bearing malfunction, crankcase crack);
  • Fuel mixture failure. Clogged air filter pores or carburetor malfunction;
  • The ignition system does not work;
  • Mechanical failure. Leakage of hoses, broken wires under the braid, tube rupture.

The user first needs to check if there is fuel in the tank. Start up in accordance with the instructions, putting the saw on its side. Set the air damper to the “closed” position, pump up fuel, turn on the ignition, and make 3-4 sharp jerks with the starter. If the engine is running, open the air damper. The lawn mowing does not start. We repeat operations with a slightly open air damper.

If the launch fails, we begin to search for the cause of the failure:

  • Check fuel quality;
  • Make sure the candle is working and the candle channel is clean;
  • Check the cleanliness of the air filter;
  • Make sure the fuel filter is not clogged;
  • Check the purity of the breather;
  • Clean the exhaust duct.

Complex causes will be found in the diagnosis of malfunctions, leading to a major overhaul of the carburetor. Such reasons include clogging of the internal channels of the carburetor, wear on the gasket and violation of the tightness of the internal halls with a loss of vacuum. Do it yourself repair of the lawn mowers, if it does not start, will require patience.

Elimination of the reasons why the lawn mowing does not start

The fuel mixture must be prepared with exact proportions of gasoline and oil. In this case, you can not use a different brand of fuel. To prevent the ingress of dirt, gasoline should be left in a glass or metal dish for 2 days. Do not use plastic containers to store fuel. Measure the oil accurately with a medical syringe without a needle. Use only freshly prepared mixture without leaving undeveloped fuel in the tank. If the engine is naughty, the lawn mower stalls, when you press the gas, fuel may be to blame.

Checking the ignition system, if the lawn mowing does not start, is carried out sequentially:

  • Remove the removed candle from soot and dirt, dry it, set a gap of 1 mm;
  • Connect to the high-voltage wire and check for a spark by pulling the starter several times;
  • If there is no spark, check the integrity of the high-voltage wire;
  • Replace the candle;
  • Dry the candle channel;
  • At the same time, the operation of the ignition coil is checked, it is faulty if the working candle does not spark.

It is in the event of a malfunction in the ignition coil of the lawn mower that does not start up hot, stalls, works intermittently.

Cleaning or replacing the air and fuel filters will ensure the necessary flow of ingredients entering the carburetor. The air filter can be washed in soapy water or replaced. If a nylon fabric is used, it is washed, the porous felt filler is replaced. The fuel filter is changed carefully, without leaving the suction pipe open. Is it necessary to replace the air filter, you can determine if the engine with the removed air purifier starts. Do I need to change the grid on the fuel supply, if the lawn mowing does not start, a dry candle will tell.

Breather, air inlet for gas tank. If it becomes clogged, a vacuum is created in the tank and the mixture does not enter the carburetor. The hole can be purged with air or cleaned with a needle. Clean the exhaust channel, remove the spark silencer mesh.

Carburettor Adjustment

The maximum and minimum engine speeds, smooth idle speed is regulated by a carburetor. The stable operation of the lawn mowers depends on the amount of the supplied combustible mixture and air, their ratio. Lawn mowing does not start if the carburetor is not properly adjusted. The procedure for setting up the device for supplying fuel at low revolutions (L), high revolutions (N) and idle (T) is regulated by the screws of the same name:

  1. The chainsaw should work for at least 10 minutes, since the adjustment is carried out hot.
  2. Turn screw N smoothly to maximum speed, then turn it by ΒΌ, counterclockwise, reducing the speed of rotation of the motor shaft.
  3. Idling is regulated by screw T, ensuring that the braid does not rotate.
  4. The screw L is adjusted, first opening the throttle as much as possible, and then gradually reducing the speed to a stable minimum.

After adjustment, a working carburetor with cleaned filters, checked by ignition should ensure the operation of the engine. In the event of a carburetor malfunction, after its repair, the feed system will need to be adjusted again before starting the lawn mowing.

Rare breakdowns that interfere with the operation of lawn mowers can be:

  • Rewind spring malfunction;
  • A broken or stuck starter pulley;
  • Faulty starter assembly.

The most important malfunction, the elimination of which is associated with replacing the engine, may be the failure of the piston group of the engine. The cost of repair will cost about 70% of the cost of the product. To understand the reasons why the lawn mowing does not start, the will help:

Proper chainsaw care

In the instruction manual there are no unnecessary phrases, everything that is offered is aimed at trouble-free operation of the lawn mowers. The cleaning of all parts after each cycle of work facilitates the easy removal of uncured residues and dirt. Only the cooled nodes need to be cleaned. This technique contributes to the quality of air cooling of the engine and gearbox.

For refueling, use fuel with the oil recommended in the instructions. If the fuel mixture is left in the fuel tank, the oil will pop up and, upon start-up, will land on the damper, impairing its adjustment. The mixture may precipitate and clog the fuel in the carburetor.

It is impossible, it is dangerous for the tool and the health of the mower, to use a metal cable instead of fishing line. It cuts more efficiently, but the load on the gearbox and motor increases. A worn piece of wire flies at a speed of a bullet. Effective mowing can lead to rapid wear of the engine piston group. For greater mowing efficiency, it is proposed to use an asterisk fishing line profile.