How To Start A Petrol Trimmer

Prerequisites

The reason why the trimmer fails, may be:

  • Tank overflow;
  • Excessive pumping of fuel into engines equipped with a manual supercharger;
  • Wear in the motor of valves, cylinders, injectors, cam followers and other moving parts;
  • The tanks are out of gasoline and / or oil;
  • The spark plug is out of order;
  • Clogged fuel or air filters;
  • The valves in the motor are out of alignment or burned.

How To Start A Petrol Trimmer

How to start a petrol trimmer?

  1. Prerequisites
  2. How to start a trimmer motor or lawn mowers?
  3. Starting the lawn mowers for the first time or after a long period of inactivity
  4. Adding fuel through the spark plug holes
  5. Checking the ignition system
  6. Cleaning the engine
  7. Checking the integrity of the spark arrester
  8. Unstable carburetor operation
  9. Draining fuel from the gas tank

How to start the trimmer correctly is a question that owners are puzzled with in the event of a device breakdown. And after a successful repair of the trimmer, the owner tries to avoid repeating the same situation.

How to start a trimmer motor or lawn mowers?

The new trimmer is simple in commissioning.

  1. Check the motor type of the device. Trimmers are equipped with a 2- or 4-stroke motor.
  2. Buy oil for this type of motor. Gasoline for a trimmer. AI-92/93/98, sold at all gas stations.
  3. Mix oil with gasoline. Mineral oil is mixed in a ratio of 1: 34 with gasoline, synthetics. In a 1: 50 ratio. Follow the trimmer manufacturer’s recommendations for oil viscosity (see the label on the flask). All-season oil 5W-30 is used more often. Do not use untested car oils.
  4. Pour a small amount (e.G. 0.5 liters) of the resulting fuel into the tank.
  5. Close the air damper by sliding the desired lever (see instructions).
  6. Turn the ignition key (or handle) to the on position. Otherwise the trimmer will not start. Beginners often make this mistake.
  7. Pump some fuel into the carburetor. If there is a manual “rocker” with a separate button or lever (see instructions). It takes 4-7 clicks.
  8. Place the trimmer on a level surface.
  9. Pull on the starter cord carefully until you feel it slow down. Then pull it out sharply, but not completely. Repeat this movement up to 4 more times.
  10. If the engine does not start, open the air damper again, otherwise the candles will flood with gasoline with further movements of the cord. Perform 2-3 attempts to start the engine with an open handbrake.
  11. If the engine still does not start, close the throttle and make several more attempts to start it.
  12. After starting the engine, press the throttle lever with idle.

Starting the lawn mowers for the first time or after a long period of inactivity

A lawn mower differs from a trimmer in that it is not a fishing line that acts as a grass cutter, but a mechanical reducer or a gear-based winch equipped with a knife. The knife drive is much more powerful than the forestry mechanism. A powerful lawn mower is also used when cutting bushes. Both Chinese and European lawn mowers are no different when the declared power is real.

To lubricate the gears of the gearbox, use lithol or grease. After checking the gearbox, prepare the motor itself for work. According to the above instructions. If the start fails, the problem is already in the engine.

Adding fuel through the spark plug holes

If the trimmer engine does not have manual pumping and the device does not start, add some fuel to the engine itself through the spark plugs. Do the following.

  1. Check if the fuel level in the tank is sufficient to drain a small amount. It only takes 20 ml.
  2. Remove the cap from the candle and unscrew it with a candle wrench.
  3. If the spark plug is dirty on a used trimmer, rinse and ignite it. There should be no deposits on the spark plug electrodes. Do not damage the center conductor ceramic insulator. In a new trimmer, check the spark plugs for a factory defect.
  4. Return the spark plug back and check the spark ignition (discharge between the electrodes) when the starter is triggered.
  5. Remove the candle again. Using a 20 or 50 cc syringe, pour 20 ml gasoline into the plug hole.
  6. Insert and fix the candle, setting the value of its technological gap not less and not more than a millimeter.
  7. Pump up fuel using the fuel pump button (or lever). If your trimmer model has one. Press the button every 4 seconds.

Now try to start the engine. Close the air damper immediately after starting.

Starting a warm engine

It’s very simple. Move the switch to the working position and pull the cord before starting. If you do everything according to the instructions, then there should be no problems with starting a working lawn mower.

How to start a petrol trimmer

The process of putting lawn mowers into operation, whether you bought it now or got it after winter storage, the rules listed below will allow you to avoid major mistakes that can damage the tool.

Let’s say you just bought a petrol trimmer. Take the instructions out of the box and see if you have all the parts listed for the lawn mower. After that you can start building.

Fuel mixture and refueling

For the convenience of preparing the fuel mixture, it is better to have a special canister, where one part contains gasoline, and the other contains 2-stroke oil. We recommend getting one like this, it is very convenient to use https://ru-sad.ru/prinadlezhnosti-dlya-sadovoy-tehniki/dlya-benzopil/kanistryi/

Next, take a measuring container with a scale applied to it, with its help you can prepare the mixture as accurately and quickly as possible. Look in the instructions what brand of gasoline and 2-stroke oil https://ru-sad.ru/prinadlezhnosti-dlya-sadovoy-tehniki/masla-i-smazki/ are recommended by the manufacturer of your lawn mowers. Pour gasoline and oil into a container for preparing a fuel mixture, according to the proportions indicated in the instructions. Then carefully pour the prepared mixture through a funnel into the trimmer fuel tank. The ratio of gasoline and oil should be exactly as indicated in the instructions. This is a very important point.!

Starting lawn mowers with cold engine

To start the mower for the first time, locate the choke lever and place it in the closed position. Turn on the ignition on the handle. If your model has a manual fuel pump, popularly called suction, then press it 3-5 times until you see the fuel mixture inside the primer. The tool is now ready to run. Lay the trimmer on a flat surface to ensure a stable position. Smoothly pull the starter rope until you feel its resistance, and then pull the rope towards you with a sharp movement 3-5 times.

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If the engine starts after 5 jerks, open the choke. If this does not happen, open the air damper anyway (if the damper is open and you continue trying to start the engine, the fuel will flood the spark plug and have to dry it, and this is a waste of time).

If the engine does not start when the throttle is open, close it and continue pulling the cord. The first start can be quite difficult and require up to 15 jerks. After the engine has started to work, press the throttle lever once, so you engage idle speed. Now let the engine run and warm up. After that it can be stopped by pressing the “Stop” button.

Basic startup errors

Let’s list the main mistakes that beginners make when starting a gasoline trimmer:

  • Starting the engine with the ignition off;
  • Start with a closed damper with the number of jerks more than 5 times;
  • Improper fuel mixture.

How to start a petrol trimmer

The process of putting lawn mowers into operation, whether you bought it now or got it after winter storage, the rules listed below will allow you to avoid major mistakes that can damage the tool.

Let’s say you just bought a petrol trimmer. Take the instructions out of the box and see if you have all the parts listed for the lawn mower. After that you can start building.

Instructions on how to use the gasoline trimmer learning how to start the tool

Before using the tool, it must be started initially. How to start a lawn mower, we will consider in detail. To begin with, the tool should be placed on a flat surface so that the disc attached to the shaft does not catch on anything. After that, we proceed to start the engine of the lawn mowers:

  1. Initially, you should pump fuel into the starting system. To do this, press the primer 4-5 times (soft hemisphere on the carburetor)
  2. Then turn the carburetor switch to the “OFF” mode. This switch is responsible for opening and closing the air damper. Turning the switch to “OFF” mode allows you to make the fuel mixture richer during startup.
  3. There is a switch on the handle near the accelerator. He is responsible for turning the ignition on and off. Before starting, you need to turn the ignition switch to mode “1”
  4. Now you can start. To do this, hold the tool with one hand and pull the starter handle with the other. If the scythe engine does not start the first time, then do not despair. Start attempts must be made until the engine starts. This usually requires 2-3 reps.
  5. If, after 5 repetitions, the engine does not start, then the fuel suction should be repeated with a primer, and start again.
  6. Once the engine starts, turn the choke switch to ON. This means that a mixture of fuel and air enters the cylinder.
  7. Let the tool idle for 15-30 seconds while the engine is warming up, after which you can start mowing

The above instructions for starting a lawn mower engine and trimmers are appropriate for a cold start. If the tool paused during operation, there is no need to close the throttle valve when restarting the engine that has not cooled down. You just need to turn on the ignition, and pull the starter handle.

It is interesting! If your lawn mower is new, remember that you cannot use it at full capacity until the break-in procedure has been completed. It is important to take this into account, otherwise the engine parts will quickly wear out and fail.

Filling lawn mowers with petrol and oil

The tool must be filled with fuel before mowing with the lawn mower. Gasoline with oil is used as fuel. However, keep in mind that you only need to mix gasoline with oil for two-stroke engines. Four-stroke engines run on pure gasoline, since their design has a separate container. An oil sump. There is no oil sump in the design of 2-stroke petrol trimmers, so only gasoline and oil should be poured into the tank.

It is recommended to use AI-92 fuel as gasoline. In order not to make a mistake in choosing, you need to read the instructions provided by the manufacturer. Often, most manufacturers recommend using AI-92 fuel, and only a few recommend using AI-95.

Gasoline must be diluted with a small amount in a ratio of 1 to 25. This means that 40 ml of two-stroke oil must be added to 1 liter of gasoline. However, not everything is so simple here either. The proportion of 1 to 25 is universal, but there are different values ​​for each instrument model. These values ​​are also indicated by the manufacturer in the instructions. details on how to properly dilute gasoline and oil in a lawn mower is described. After diluting gasoline with oil, fill the tank full, and start working.

It is interesting! If a four-stroke lawn mower is refueled, then clean gasoline must be poured into the tank, and engine oil is added to the oil container to the maximum level.

How to attach a disc or line to a trimmer

The cutter is attached to the executive body. The attachment point is called the gearbox. It is not difficult to cope with the task of installing a disc or coil. The principle of fastening the cutting discs to the trimmer is as follows:

  1. Initially, the shaped washer is fixed by using a hex wrench
  2. Install the disc on the shaft
  3. Then install the upper washer, then tighten it using the fastening nut
  4. It is necessary to rotate the nut using a special socket wrench, which usually comes with each tool.
  5. Nut rotation is counterclockwise
  6. When rotating, it is necessary to wedge the shaft with a hex wrench

Removal and replacement of the trimmer disc is carried out in the opposite sequence. For more information on how to attach a line reel to your lawn mower, see this resource.

Fuel mixture and refueling

For the convenience of preparing the fuel mixture, it is better to have a special canister, where one part contains gasoline, and the other contains 2-stroke oil. We recommend getting one like this, it is very convenient to use https://ru-sad.ru/prinadlezhnosti-dlya-sadovoy-tehniki/dlya-benzopil/kanistryi/

Next, take a measuring container with a scale applied to it, with its help you can prepare the mixture as accurately and quickly as possible. Look in the instructions what brand of gasoline and 2-stroke oil https://ru-sad.ru/prinadlezhnosti-dlya-sadovoy-tehniki/masla-i-smazki/ are recommended by the manufacturer of your lawn mowers. Pour gasoline and oil into a container for preparing a fuel mixture, according to the proportions indicated in the instructions. Then carefully pour the prepared mixture through a funnel into the trimmer fuel tank. The ratio of gasoline and oil should be exactly as indicated in the instructions. This is a very important point.!

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How to properly mow with a lawn mower with line

Is there a difference between cutting grass with a disc trimmer and a line? In addition to safety, there is a difference in the principle of operation. It is possible to work as a lawnmower with a fishing line fixed in the structure on a reel in constant speed mode. This is due to a number of the following reasons:

  1. The line with a reel is 3-4 times less in weight than steel discs, so the shaft is practically not stressed
  2. The grass cut by the line is usually not tall and mostly sparse, which also eliminates the possibility of a heavy load on the engine
  3. The line reel has no inertia due to the minimum weight, so when the gas is thrown off, their rotation stops almost instantly

It follows from this that it is possible to mow with a lawn mower with line at constant rpm, but it is important to take into account that the rpm value should not be higher than average. If the line cannot cope with the grass, then you should increase the speed, but at the same time you need to mow in the throttle release mode.

Now let’s consider the main factors that are important to consider when working with a tool:

  • Hold the spinning line reel 10 cm off the ground
  • If the line cannot handle tall grass, you can cut the top first and then the bottom.
  • Cut in the direction in which the line or disc rotates. This is especially important for steel rims
  • Take breaks, as when working as a lawn mower, not only the mower gets tired, but also the tool itself

It is interesting! Mowers often have questions about how much they can mow with a lawn mower per liter of gasoline? There is no single answer to this question, since it all depends on factors such as the power of the tool, the type of cutter used and the type of vegetation.

Now that you know how to mow correctly with a lawn mower or a trimmer (by the way, these tools differ only in name), you can begin to improve the backyard area or summer cottage. When the tool is not used for a long time, all fuel should be drained from the tank. Indeed, during long-term storage, oil tends to precipitate, which will lead to negative consequences. The situation is similar with the storage of finished gasoline diluted with oil. It is not recommended to store it diluted for more than 2 weeks.

Summing up, it is worth noting that working with a gas trimmer is not at all difficult, and even a woman can cope with this, as the below proves. However, the operation of the tool should not be treated with negligence, as if safety precautions are not followed, serious injuries can occur.

How to start a petrol trimmer

Filter diagnostics for lawn mowers

Another reason why the gasoline scythe stalls is the air filter. To eliminate it, try removing the filter and starting the trimmer without it. If possible, then you will have to change the air filter to a new one, or at least blow through and thoroughly clean the old one.

The petrol trimmer may not start due to a dirty fuel filter. This is the next step in our algorithm. Here we check the condition of the filter element and, if necessary, replace it with a new one. When replacing, try not to leave the suction inlet without a filter at all, this is prohibited by any operating instructions. Haste can turn into repair of the engine piston group.

Checking the fuel mixture

Before starting the engine of the gasoline streamer, check the presence and quality of the fuel mixture. Do not save, do not be greedy and “do not be clever” in this matter. Repair or replacement of the piston group will cost you too much (sometimes up to 70% of the cost of a new tool). Prepare the oil-fuel mixture strictly according to the instructions. Calculate its amount based on real needs. Excess gasoline left over after work loses its quality over time.

We carry out diagnostics of a candle and a candle channel

If the quality of the fuel mixture is not in doubt, and the lawn mower stalls when started, then a flooded spark plug may be the cause. Here, for repairs, an ordinary candle wrench is suitable (every motorist probably has) and a spare candle.

  • We unscrew the candle and wipe it;
  • Dry it thoroughly (do not ignite);
  • We drain the excess fuel in the chamber through the spark plug hole and dry it;
  • We clean the old candle from carbon deposits using a file or a lady’s file;
  • We set a gap with a distance of 1 mm (you can check with any coin);
  • We put everything back in place and try to start the trimmer.

If the candle is working, the socket where it is located is completely dry, and the lawn mower does not want to start, lubricate the threaded connection with gasoline. It should be slightly damp. No matter how wonderful a spark the candle gives out, there is simply nothing to light up in a dry chamber.

If the trimmer motor still does not start, a reason such as the absence of a spark due to poor contact between the spark plugs and the high-voltage wire should be ruled out. If the connection is of good quality, but there is still no spark, most likely your ignition unit has “flown”. Here it will not be possible to do without a master, since the part is not repaired, but is sold as a single unit.

Why the lawn mower won’t start. Troubleshooting

Caring for the backyard plot, summer residents periodically encounter the fact that the lawn mower does not start. There are many reasons for tool failure. To correctly diagnose the problem, the owner of a useful unit in the country needs to know the device and the principle of operation of its individual parts.

  • How to start diagnosing lawn mowers
  • Checking the fuel mixture
  • We carry out diagnostics of a candle and a candle channel
  • Filter diagnostics for lawn mowers
  • Breather and exhaust port
  • complex reasons for lawn mowers failure
  • Rules for the operation and storage of lawn mowers

How to start diagnosing lawn mowers

If the lawn mower does not start or immediately stalls after starting, it is necessary to sequentially check all the main components and assemblies. The verification algorithm is as follows:

  • Fuel tank (fuel quality);
  • Candle and candle channel;
  • Air filter;
  • Fuel filter;
  • Breather;
  • Exhaust channel.

These nodes are most often the source of major problems that can be eliminated after a thorough inspection.

Breather and exhaust port

Often, “gentle” branded lawn mowers do not start and stall due to a dirty breather. The main function of this element is to equalize the pressure in the gas tank. When this unit becomes clogged, a vacuum is created in the tank, preventing the supply of fuel. You can eliminate the malfunction by cleaning the breather. You can use a regular needle for cleaning.

Normal operation of streamers with internal combustion engines may be impaired due to dirt entering the exhaust duct or clogging of the muffler mesh. There is such a problem on older generation models. The issue can be resolved by traditional cleaning and removal of the anti-spark grid.

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Why won’t the petrol trimmer start? Causes and their elimination

Recently, the gasoline trimmer has acquired the status of one of the main tools in the arsenal of summer residents. And this is not surprising, because a motorized scythe allows you to quickly put your personal plot in order. However, it sometimes happens that the trimmer does not start hot or even cold. In such situations, you have to independently determine the cause of the malfunction. Let’s figure out what to do if the trimmer won’t start. The reasons that most often lead to such troubles will be discussed below.

Outlet duct diagnostics

Stable trimmer performance can be compromised by build-up of dirt in the exhaust duct or blockage in the muffler mesh. This problem most often occurs during the operation of older generation trimmer models. The issue is being solved by dismantling the anti-spark grid and cleaning it.

How to prevent sudden breakage during trimmer operation?

In order for the unit to always be in a functional state, it is worth following a few simple rules:

  1. Conduct a timely, regular technical inspection of the main mechanical components of the device.
  2. Fill the trimmer with only fresh fuel, the quality and origin of which is beyond doubt.
  3. After each use of the tool, check whether oxides and carbon deposits have formed on the surface of the ignition system.
  4. Avoid heavy load on the trimmer during work.

In order for the unit to remain in working order, it is necessary to properly prepare it for storage in the winter. First of all, you should completely disassemble the instrument, and then flush and clean the constituent elements. It is also important to inspect functional blocks for damage, if necessary, eliminating deformation of parts, all kinds of distortions, gusts of materials.

Checking the fuel mixture

Let’s say your trimmer won’t start. In this case, the first step is to check whether there is enough fuel in the tank, and also to assess the quality of the fuel mixture. It is necessary to refuel the motorized unit with exclusively high-quality gasoline. It is recommended to use fuel with a grade not lower than AI-95. Filling the trimmer with fuel of unknown origin not purchased from a gas station can cause frequent tool malfunctions. This can cause damage to the piston-cylinder system. In this case, repairs often exceed the cost of the device itself.

Why won’t the petrol trimmer start? Improper preparation of the fuel mixture, which consists of oil and gasoline, can also lead to this. The proportions in which these components are connected are indicated by the manufacturers in the trimmer instruction manual. It is highly discouraged to prepare the fuel mixture in large volumes, that is, for the future. Indeed, with long-term savings, there is a loss of the defining properties of the substance. Therefore, if the trimmer does not start, it is worth draining the old fuel and using a freshly prepared fuel mixture.

Troubleshooting strategy

Where to start troubleshooting if the trimmer won’t start? In situations where the tool stalls immediately after starting, it is worth inspecting the following components of the unit:

  • Fuel tank;
  • Spark plug;
  • Fuel and air filter;
  • Outlet channel;
  • Breather.

It is the breakdown of the above locations that most often leads to the fact that the trimmer does not start well. Let’s look at how to eliminate such troubles.

Cleaning the breather

Often, the engine of branded trim models stalls as a result of a clogged breather. The main task of this component is to equalize the pressure in the fuel tank. In case of contamination of the unit, a vacuum is formed here, which significantly complicates the supply of fuel. The problem can be eliminated by cleaning the breather with a regular sewing needle.

What to do when petrol trimmers won’t start?

The petrol trimmer is a surprisingly useful tool that can be used to mow not only a miniature front lawn, but a whole lawn of considerable size. Unfortunately, there is nothing eternal in this world, and therefore you may face the fact that petrol trimmers do not start.

It often happens that users of this kind of cars are trying to “save money” by pouring into the tank not fuel with a normal octane number, but something incomprehensible that has been in a plastic canister for almost a dozen years.

Perform cold starts correctly!

Petrol trimmers often do not start after trying to “put them into operation” after long-term storage. Failure to launch in this case is often caused by incorrect user actions.

If you are faced with exactly this phenomenon, then during a cold start you need to close the damper, and then pump a small amount of the fuel mixture into the carburetor. Then pull the starter handle until you feel resistance, then start the trimmer with sharp and energetic movements.

The main thing. Fuel mixture!

In this case, the remnants of plastic dissolved in an aggressive environment do such terrible things in the combustion chamber that you will definitely not be able to do without completely overturning the mechanism. But you will certainly remember forever how to properly store fuel.

What to do when the fuel was definitely normal, there is a spark, but the petrol trimmer will not start? It is possible that you just filled the candle with gasoline. In this case, it must be turned out, wiped with a clean cloth and dried. By the way, it will be quite useful to check the candle itself for performance.

reasons

There are not only situations when petrol trimmers do not start, but there are cases when after starting they work for a couple of seconds and then stall. Inspect the spark plug again: if it is “thrown over”, and this situation repeats even after wiping and drying it, go to the “revision” of the air filter.

Most likely, it is completely oiled and needs to be replaced. If everything is fine with the filter, it may be that the ignition coil is out of order.

In the case when the petrol trimmers do not start, and you have done all of the above, the muffler may be clogged. It must be dismantled, burned on a burner, after which all carbon deposits can be easily shaken out.

Even if your trimmer won’t start even after such bullying, you cannot do without disassembling the carburetor. It may very well be that the falling needle in it is to blame for everything. In any case, disassembling and flushing this capricious mechanism will certainly not interfere.

In general, when the trimmer began to be capricious and stall, it is advisable to carry out full preventive measures: completely change the fuel mixture, try a different oil, and also change the spark plug without fail. Practice shows that in many cases cheap low-quality candles are to blame.

We’ve covered the most common reasons why the trimmer won’t start. If the matter is in something more “exotic”, you cannot avoid going to the service center. You will surely find smaller and more obvious breakdowns yourself.