Fix a Mower that stopped while mowing and won’t start again

The cause of the chainsaw starts and stops

Owners of chainsaws sometimes have to deal with the fact that the saw, for no apparent reason, stops working normally. To understand why the chainsaw stops working in different modes of operation, as well as to describe how to diagnose malfunctions, we will try in our article.

The situation in which a chainsaw starts up in the cold, but may stall as it heats up, is familiar to many who deal with them. The main causes of this behavior are as follows.

  • Faulty ignition module (coil). You can determine the problem by checking the spark plug on a cold engine first, and then on a hot one. If there is no spark on a hot engine, then it is worth trying to fix the problem by replacing the ignition coil.
  • The chainsaw carburetor is not properly set (floods the spark plug when it is hot). You can tell if there is a problem by the way the saw starts when cold. If you don’t need to close the choke in order to start the engine in cold conditions and the engine starts without preflash, it means that the fuel mix is not formed correctly and after the engine warms up the fuel floods the plug and makes the start impossible. The problem can be corrected by adjusting the carburetor.
  • Spark plug is defective. In such a situation, similar to a faulty ignition coil, the spark disappears when the engine heats up. It is worth trying to replace the spark plug with a new one, and if this does not help, you should check the ignition coil and the gap between it and the flywheel.

You can check the ignition coil with a multimeter or replace it with a known good one. Check the primary and secondary coils with a multimeter in resistance measurement mode. The resistance value of the primary winding, the work coil, is 1 kOhm. The secondary 4 kOhm.

Checking the chainsaw’s main systems

If the chainsaw refuses to operate normally, you must make sure that all the conditions required for its normal operation are met:

Then you must check the function of all its elements one after the other. Check the fuel tank first. If it is not the fuel quality or volume that is the cause, it is probably the spark plugs. The gap on the spark plug must not exceed 0.5 millimeters. If it is too small, it means that there is soot deposits on the spark plugs. In such a case, it is necessary to remove the plugs, clean them, then install them in place and try to start the chainsaw. In addition, it is advisable from time to time to completely replace the plugs with new ones, even if they are in good condition.

Then you need to check the condition of the fuel filter and carburetor. Self-cleaning the fuel filter is an uncomplicated task, but the repair of the carburetor is best to entrust the experts.

The gasoline grass trimmer does not start. Causes

Many garden tools are useful and effective, but there are times when the equipment refuses to work. They include the grass trimmer, which can mow and miniature lawns, and huge lawns.

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Trimmer starts and dies. Quick fix.

Reasons why the gasoline grass trimmer won’t start

There are different reasons why the gasoline grass trimmer does not start:

  • The most common reason for failure lies in the wrong choice of fuel. Often overly frugal users of the device fill the tank with something questionable, but in no way fuel with a normal octane number. Low-quality fuel that has been kept in a plastic can for a long time has a terrible effect. The device, which has lost performance for this reason, is sent for a complete reassembly of the mechanism.
  • There is another common situation when a gasoline grass trimmer starts up and stalls. The problem may be in the spark plug or air filter. In the first case, after inspection, it will be found that the spark plug is “pitted”. This happens even if it has recently been wiped and dried. If the spark plug will be all right, it is worth inspecting the air filter. Most often it is oily and needs to be replaced. If the device still refuses to start, the problem is either a faulty ignition coil or a clogged muffler.
  • The device can be spoiled not only because of low-quality fuel, but also because of improper handling. For example, the fuel is checked, the spark is there, but the device does not start. The cause of the problem may be a spark plug full of gasoline. To fix the situation, you only need to unscrew the plug, wipe, dry and check for performance.
  • Sometimes there is also a situation. The gasoline trimmer for grass does not start when the plug is dry. Then it is necessary to lubricate the thread connection with gasoline. It should be slightly moist, otherwise there will be nothing to ignite.
  • Often the owners of the device find themselves in a situation where the gasoline grass trimmer does not start well when hot. Some masters say that the problem is hidden in the ignition coil. So it is necessary to change it, and the machine will work. But the problem can also be in the overheating of the engine, especially if a reinforced knife like a circular saw has been attached to the device. To avoid such situations, you should carefully study the instructions, where it is specifically described what types of disks can be put.

The reasons when a new gasoline trimmer for grass does not start, can be the most trivial, for example, inability to use the device. If the user stores it correctly, uses quality fuel and does not leave gasoline in the trimmer, the unit will serve you for a long time.

How the breather affects the ability to start the lawnmower motor

Once you’ve ruled out lawnmower filter malfunctions, you need to check the breather plug. The breather is a part that is responsible for normalizing the pressure in the tank. When the fuel gradually flows out of the tank into the carburetor, the pressure increases (vacuum is created). To discharge the vacuum inside the tank, the breather is used, a kind of valve that is located on the tank lid of the tool. This valve has a filter element that filters the air that enters the tank.

Over time the filter gets clogged and causes a vacuum in the tank. Banal, but in 30% of cases the grass trimmer failure in the form of inability to start it is associated with a clogged breather. The breather plug of the trimmer can be cleaned and the tool can be used again. To be sure that the grass trimmer malfunction is caused by the breather is as follows:

  • Unscrew the cap from the gas tank
  • If the air bleed occurs when unscrewing it, it can be 100% sure that the breather plug is defective
  • Screw on the cover and start the lawnmower engine. If the grass trimmer starts, but stops after a while (when the amount of fuel in the tank is reduced), it is necessary to clean the breather plug
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stops, gasoline, grass, trimmer, reason

You can clean the breather plug with a regular sewing needle

Many people don’t even know about this important detail, so they often don’t understand what to do when the engine of the mower gasoline-trimmer won’t start. Answering the question of the impact of the breather on the start of the motor, it is necessary to say that it has a direct impact

Excessive tank pressure prevents fuel flow to the carburetor, so the engine will not start.

Lawnmower starts and stops. What’s the reason and how to repair it

Gasoline lawnmower is a device with special technical and practical parameters, which can please even the most demanding customers.

And here in a special way it is worth noting that the device, in spite of its special manufacturing and high cost, can encounter breakdowns and malfunctions, so there is a need for timely maintenance and repair.

Among the main reasons it is worth noting the lack of continuous operation, that is, the device starts and stops, thereby creating problems of an operational nature. Lawn mower repair at an affordable price will perform experienced specialists of the company eco-service.Kz.

What to do if a malfunction occurs

If the machine stops in wet weather, it is necessary to check several car assemblies one by one.

The first problem area is the spark plugs. Usually they fail, when the car stalls in a puddle. This element is very sensitive to the presence of moisture. The spark plugs should be dried by wiping them with a dry cloth or tissue. After that the engine should start.

Next you need to look at the distributor cap for fumes and cracks. It is worth wiping with a dry cloth and, if there are mechanical damages, replace.

The ignition coil and high-voltage wires should also be diagnosed for moisture. If you find traces of water on these elements, simply dry them with a hair dryer.

If the car starts but jerks, the sensors are the problem. They tend to oxidize when wet. To understand which element in the car’s electrics is faulty, you can use special scanners that read the errors. If it is not available, you will have to go to the service. If a faulty sensor is detected, it must be replaced.

Often in wet weather, the car jerks and stalls in the case when there is a defect in the winding of the wire in the exposed areas. Oxidized surfaces are treated with a contact cleaner, and in case of mechanical defects the wire is replaced.

It is very important to remember that if, driving into a puddle, the car stalls, even after all the recommendations for the elimination of moisture, you should wait until it evaporates from all systems of the car. Starting the engine with undried components can cause serious damage.

If the car won’t start after the elements have dried out, don’t try too hard and make multiple attempts. It is better to transport it on a tow truck or an evacuator to an auto service center, where they will find and fix the failure with the help of special equipment.

What to do if a breakdown has occurred

If the car stalls in wet weather, it is necessary to check several car assemblies one by one.

The first problem area is the spark plugs. They usually break down when the car stops in a puddle. This element is very sensitive to the presence of moisture. The candles should be dried by wiping them with a dry cloth or tissue. After that the engine should start.

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Next, you need to look at the tramplate cover for evaporation and cracks. You should wipe it with a dry cloth and, if there is mechanical damage, replace it.

The ignition coil and high-voltage wires also need to be diagnosed for moisture. If you find traces of water on these elements, just dry them with a hair dryer.

If the car starts, but moves jerkily, then the problem is in the sensors. They tend to oxidize when wet. To understand which element in the car’s electrical system is faulty, you can use special scanners, which read the errors. If this is not available, you will need to contact the service. If a damaged sensor is detected, it must be replaced.

Often in wet weather, the machine jerks and stalls in the event that there is a defect in the winding wire in the exposed areas. Oxidized surfaces are treated with a contact cleaner, and in case of mechanical defects the wire is replaced.

stops, gasoline, grass, trimmer, reason

It is very important to remember that if, driving into a puddle, the car stalls, then even after all the recommendations to eliminate moisture, you should wait until it evaporates from all systems of the car. Starting the engine with undried elements can cause serious damage.

If the car does not start after the elements have dried, do not be zealous and make many attempts. It is better to transport it on a tow or an evacuator to the car service, where with the help of special equipment they will find and eliminate the damage.

Lawn mower won’t start after winter

In such cases, it is necessary to carry out maintenance of the unit. Remove the fuel system, including filters (air, fuel), disassemble the carburetor, clean each component, flush. Blow through the filters with air. Pay attention to the quality and octane number of fuel.

It should be taken into account that products of such famous brands as STIHL, Husgvarna and others, will not work on cheap gasoline with a low octane rating. Suitable fuel for them is grade AI. 92 or higher from the filling station and then from the well-established, because the filling stations also have bad gasoline. The use of high octane and quality gasoline will determine how long you will use the mower and how long it will last.

It is also necessary to take into account that if the diluted fuel mixture is kept for a long time, its operational properties deteriorate, which also leads to the situation when the lawnmower won’t start. Therefore, you should dilute in portions, i.E. Such quantity of mixture that is produced at one time. The manual clearly describes and explains the proportions of gasoline and oil in the mixer. Strict adherence to the correct proportions will at least save you from several questions, why the lawnmower does not start and what to do in such cases.

The gasoline lawnmower is a complex, motorized machine that requires proper maintenance and periodic repairs.

Now you know what malfunctions can be eliminated by the majority of gasoline lawnmower owners themselves and how to do it, as well as in what cases it is better to go to a workshop.

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