Wind the lawnmower starter spring. Signs and causes of starter failure

How to repair a lawn mower yourself

The starter is one of the main components of the hedge trimmer, which greatly facilitates starting the motor of the tool. Its failure can occur at the most inopportune moment, which, of course, will lead to significant changes in the daily plans of the owner. You can solve the problem in two ways: repair the grass trimmer starter with your own hands or replace the entire unit. The easiest way to solve the starting problem. Is to replace it completely, but from a financial point of view, buying a new starter may seem too difficult. To fix the damage yourself, just prepare a screwdriver with the appropriate tip and read the following recommendations.

A chainsaw is a basic tool that can be used to supply firewood for a bath or fireplace, it can also be used for construction work on a summer cottage or a private home. The chainsaw can be used for a long time if all the operating criteria are followed and preventive measures taken as provided by the manufacturer are followed. But after a while small problems can occur which can be solved without the help of others. For example, the chain saw starter repair with their own hands is completely on the power of observing the sequence of operations.

1 starter screw, 2 bushing, 3 easy starter spring, 4 screw, 5, 6 coil starter, 7 deflector, 8 starter cover, 9 handle and cord, 10 screw.

Design and principle of operation of the starter on a trimmer

The petrol engine is basically the engine of the brushcutter Its output is in the 0,5-2,5 litre range.с. The movement from it is transmitted to the shaft inside the hollow shaft, and then through a gearbox consisting of gears to the line or blade (working body).

The lawnmower also has the following parts:

  • protective hood
  • handle;
  • A belt, designed for comfortable use of the device;
  • the starter, which serves to start the gasoline internal combustion engine.

All parts of the brushcutter are shown in the photo below.

The starter on the trimmer is an integral part that performs engine starting. It is shown separately in the two photos below.

Starter mechanisms of different models of chain saws work on a similar principle: during the start of the engine, the tabs, marked in the photo above with the number 1, enter into the hook with the pawls 3. When the engine is running, they return to their previous position because of centrifugal force. The wires 2 also have a similar function.

The process of returning to the initial position of the elements of the mechanism occurs due to the presence of a spring wound around the axis. It unfolds when the rope is pulled. After releasing the cord, it retracts and winds up due to the coiling of the spring. When starting the lawn mower’s ICE, the starting mechanism turns its shaft until it starts working (starts up).

Nowadays petrol brushcutters are equipped with two types of starter mechanisms:

The first option is much more common.

The starter on a trimmer can function without failure for a long time. It is impossible to state unequivocally the period of trouble-free operation. Everything depends on the initial quality of the device and the observance of the rules for handling it.

Spring mechanism

The manual design is simple, but it can be improved to save effort and time. For example, to put an electric starter for a power tiller. Then you don’t have to pull the handle every time. But keep in mind: not all manual starters are suited to this design. And the circuit you choose to install may not fit every engine.

In these cases, consider a third option: a spring-loaded engine starter. After it is installed on the engine, you just have to move the handle of the power tiller and it will start immediately. This type of kickstarter based on the semiautomatic spring. It accelerates the engine on a single-axle tractor without having to pull the handle. It can take about two hours to change from a full manual starter to a mechanical one.

How to replace or put in place a spring starter?

If the rope on the starter is okay, the coil itself is suspect. It is driven by a coiled band spring. To change the spring, follow certain steps.

  • Remove the starter from the mower.
  • Remove the starter coil.
  • Unscrew the main bolt that holds the pulley to the housing.
  • Pull out the catching tendons and the spring, the strap spring is almost completely straightened out or coiled up with rings of larger diameter.
  • Hold it in place in advance.
  • Check that the spring is intact (there may be rust marks, breaks, etc.). д.). If the hooks on the ends are broken, you can’t bend new ones. high carbon steel breaks when you try to bend it. Loose hooks are suitable for easy bending.
  • Make sure the auxiliary (regular) spring and washers are in place. These parts protect the coil body from being crushed by the ends of the main spring. If the washers and the spring are broken and no new ones are available, do not screw the bolt of the coil tight, but keep an eye on it. it can unscrew and lose.
  • If the main (flat) spring is damaged, insert a new one. Put the hook on the end of the spring in place and bend it, inserting it coil by coil into the space where it is supposed to be.
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Rewind the spring in a minute. Skill in this action is acquired quickly.

To learn how to replace or put in place the starter spring, see the following video.

wind, lawnmower, starter, spring, signs, causes

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Replacing the oil seal of the Chinese grass trimmer on the starter side:

Unscrew the spark plug, block the movement of the piston with the stopper. Removing the starter (par.31). With a 13mm head, unscrew the starter ratchet (n.35). Traces of gasoline mixture on the oil seal, indicates that it needs to be replaced. Use thin flathead screwdriver (or awl, or whatever you have on hand) to remove old gland (n.36), pick it up with a screwdriver from the crankshaft side and remove it.

Before installing the new packing, apply a small amount of oil to the inner surface of the packing (you can use the oil we use in our gasoline mixture)

Blow and degrease gland seating surfaces and evenly mount the new gland.

Replacement of the oil seal gasoline trimmer for grass on the flywheel side:

Unscrew the spark plug, block the piston movement with the stopper.

For convenience, remove the crankcase cover (n.58) by unscrewing the 4 screws (par.61)

Remove 2 clutch mounting screws (n.57) and washers (n.56), remove the clutch assembly and the washers underneath (n.53)

Unscrew nut (nr.52) of the flywheel (z.51), but not all the way through. Do not strike the nut “knock it off the crankshaft”. Unscrew nut, remove flywheel and key. Examine the packing surface. any signs of moisture or dampness, abrasions, and other damage is a reason for replacement.

Use a thin flathead screwdriver (or an awl, or whatever you have on hand) to remove the old stuffing box.50), undermine it with a screwdriver from the crankshaft and remove it.

Before installing the new stuffing box, apply a small amount of oil to the inner surface of it (it is possible to use oil that we use for making gasoline mixes).

wind, lawnmower, starter, spring, signs, causes
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Grass trimmer winding repair with their own hands

In detail: repair winding trimmer for grass with their own hands from the real masters for the site olenord.com.

Grass trimmer repair is necessary when the device does not turn on or does not function properly. All owners of private houses and country houses are familiar with the problem of excessive vegetation, getting rid of which is sometimes difficult. As you know, progress does not stand still and new developments and useful inventions appear in all areas. It touched the agriculture. You no longer have to mow with the old, inconvenient devices, thanks to modern petrol-powered mowers, which can get rid of vegetation in the most hard-to-reach places.

Gasoline trimmer can mow the grass even during cloudy weather. Take care of the garden plot with the help of this unit is very simple, and any adult man will be able to cope with this activity.

Despite its versatility, like any technique, grass trimmers tend to break down and fail.

Lawn mower repair with their own hands can not every man, because this requires skills to fix electrical devices, but today we will try to figure out how to start the trimmer for grass without the starter, and how, in general, you can debug his work with his own hands.

Grass trimmer repair with their own hands involves the elimination of all the problems that prevent the normal functioning of the unit. Among the most common can be noted the following:

  • Breakdown of the cylinder-piston group (CPG) of the engine;
  • Grass trimmer fails when trying to increase the speed of work;
  • Breakdown of the ignition coil;
  • There is no connection between the engine and the gearbox;
  • there is a strange noise during operation;
  • Engine cannot reach the correct speed.

The failure of the engine cylinder block can be due to poor fuel quality or engine parts wear. As is known, the piston group is lubricated by oil, which is added to petrol. old oil leaves grease in the form of sludge, which makes the oil unusable. If you keep trying to run the grass trimmer, you can kill the motor in a matter of seconds, and this will incur additional repair costs for the grass trimmer. This breakdown is considered the most expensive. To fix it, you need to replace the piston group as a whole, to be more exact, it may be necessary to replace the cylinder, rings, piston and seals. In such cases, it is unlikely to be able to do without additional help, unless you yourself are a master and know how to handle such equipment.

Repair the lawnmower with your own hands can be done if it starts up and works at idle speed, but then zabuhankayutsya when you try to increase the speed of work. To fix this breakdown, you need to repair the carburetor or clean the muffler or gas filter. At first glance, everything is quite simple to solve, but if after you clean the clogged parts trimmer for grass, it did not work, then you may need additional diagnostics.

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The main sign that the ignition coil has failed and a trimmer repair is needed is the lack of spark on the spark plugs. It is very important in this breakdown not to rush to replace the coil, in most cases the cause of the breakdown is a lack of contacts, in the switch button, which may have broken, or the problem in the candle itself. It is necessary to check it necessarily, perhaps somewhere there is a current breakdown or there are gaps or soot.

If the grass trimmer engine can not reach the desired speed, it is likely that the air filter is clogged or there is debris in the engine itself. The solution to the problem is clear immediately. clean the engine and filter, in some cases you may need to replace the filter.

Most trimmer users encounter constant noise during operation. If you hear a characteristic knock, as if on the metal, it is likely that the engine in the trimmer overheated or the fuel does not pass. To get rid of the sound, you need to refill the gasoline or turn off the mower for a while.

It is not necessary to exhaust the machine: if it is constantly working to wear it out, its service life will be reduced several times. If the knock is felt in the engine itself, the cause is a faulty piston, piston ring, worn cylinder or crankshaft bearing. To stop the knocking noise, you have to replace the defective part in the trimmer.

Sometimes it happens that the motor in a trimmer is running fine, but the output shaft rotates very slightly or does not rotate at all. This is indicated by the fact that when the grass trimmer touches the grass, it stops working altogether and turns off.

To get the mower working normally again, you need to check the 3 main components, namely:

Gearbox. a very important component, so the grass trimmer repair in this case should be carried out by an experienced craftsman, and to avoid such failures in the future, the gearbox requires appropriate maintenance.

In addition to the above-mentioned breakdowns, other malfunctions occur, for example, the start button falls down or the limiter falls off the mowing head. You can replace the trigger with a soldering iron and the limiter can be wired with copper wire. You notice that the line for the trimmer is torn or finished? It is enough to buy a new coil of the same diameter of line and, having disassembled the drum, wind it on the bobbin.

If you want your mower to work for a long time and without interruptions, then it needs to be serviced constantly, you can contact a service center or diagnose yourself.

For this you need to constantly check the bushings of the rod and if necessary change them, the same applies to the plug.

You constantly need to fill the gearbox with special grease, partially disassemble the motor part and clean it from accumulated dirt. In most cases, such maintenance of the grass trimmer is carried out, according to a certain number of hours worked.

Repair kickstarter lawnmower with their own hands

In detail: repair kickstarter lawn mower with their own hands from the real master for the site olenord.com.

We will repair the starter from the brushcutter. Often there is a situation, start up and the rope does not come back. How to fix it? First, we remove the starter from the grass trimmer and unscrew the central bolt. There are different mechanisms, wire, butterfly with one or two, four hooks There is no difference, the design is the same everywhere. Remove the upper mechanism, do not lose the spring and see what happened. The spring is completely off, sometimes it breaks or comes off.

How to repair? First you need to untie or cut the string and remove the handle, pull the mechanism. Carefully, remove the face because the spring shoots out. Let’s see what happened to our spring. It often happens on the spring if it is hardened, breaks off the ends. In this case, all the ends are intact, the spring came off.

What to do?? Wind it back up. It’s easy to do. Take the inner mechanism, there is a groove for the spring, put it here. That’s where it came off. Take it and unbend it a little, but do not bend too much as the spring is tempered. If you squeeze it too hard, it might break and then you can’t do anything. Although the spring is inexpensive, but you need to look for it, to order it. So we insert here and carefully, holding it, start winding on the inner side. Not always the first time it works.

You have screwed the spring on and it is tight. Do not worry, even sometimes it does not succeed at once. Practice, there is nothing difficult.

Gasoline trimmer starter repair for grass can be needed at the most inopportune moment. In this case, the problem can be solved in two ways: to replace the broken part or to change the entire unit. The last option is more expensive. To repair the device with your own hands in most cases only a screwdriver with the appropriate tip is needed from the tools. Repair work does not take much time and does not require any special knowledge. It is enough to know the device, the principle of operation, the nuances of assembly-disassembly of the starter on the trimmer to achieve the desired positive result.

If you have noticed that the brushcutter line is broken or has run out of power, the engine is, in principle, the main part of brushcuts.с. The movement from it is transmitted to the shaft, which is located inside the hollow rod, and then through a gearbox consisting of gears, already to the line or knife (working body).

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The lawnmower also has the following elements:

  • protective cover;
  • handle;
  • the belt, designed for easy use of the device;
  • The starter, which serves to start the internal combustion gasoline engine.

All parts of the brushcutter are shown in the photo below.

The starter mechanism on the trimmer is an integral part that performs engine starting. It is shown separately in the two photos below.

Starter mechanisms of different models of chain saws work on a similar principle: during the start of the internal combustion engine, the tabs, marked in the photo above by the number 1, enter into the hitch with the pawls 3. When the engine is running, they return to their previous position because of the centrifugal force. A similar role is also performed by the wires 2.

The process of resetting the elements of the mechanism occurs due to the presence of a spring wrapped around the axis. It unfolds when the cord is pulled. When the cord is released, it retracts and winds up due to the coiling of the spring. When the lawnmower’s internal combustion engine starts, the starter mechanism turns the shaft of the lawnmower until it just starts working (starts up).

Today, gasoline brushcutters are equipped with starter mechanisms of two types:

The first variant is much more common.

The starter on the trimmer can function without failure for a long time. It is not possible to state precisely the interruption in service life. It depends on the initial quality of the device and the observance of the rules for handling it.

The cause of a broken starter unit is not difficult to diagnose. There are several basic options:

These parts are shown in the picture below.

It may happen that the starter mechanism is accidentally broken. The consequences will be dire if the torn cord gets wrapped around the flywheel of a running engine: then the spring will burst, the pulley will tear. But such cases, when you need a complete replacement of the starter unit, occur very rarely. In most cases, to fix the mechanism, it is enough to put a new spring or replace the cord.

To repair the starter trimmer for grass, you will need to first disassemble it, and then assemble. The process is not a particularly difficult endeavor. To work you will need a screwdriver with a tip of the right shape.

Disassemble the starting mechanism in order to install new parts instead of the broken ones in the following sequence:

  • Unscrew the screw that secures the pulley with the starter cover with a screwdriver;
  • take out the spring and the tendons;
  • Remove the pulley carefully (you need to turn your head or work with goggles and gloves on);
  • determine why the starter mechanism is broken;
  • If the spring is almost completely destroyed, it is replaced;
  • when the spring is out of the hook, it is installed in its original place, having bent the tendons before (the photos show the process of laying);
  • after the spring plate has been inserted into the groove, carefully twist it.

To change the spring, you should work carefully and carefully: it can, under the influence of the force caused by installing it in place, accidentally burst. Even if you carefully remove the roller, the spring band very quickly flies off the coil and can injure your hand with its sharp edges.

Design and principle of the starter on the trimmer

The gasoline engine is, in principle, the main part of the brushcutter Its power lies in the range of 0,5-2,5 l.с. The movement from it is transmitted to the shaft, which is located inside the hollow rod, and then through a reducer consisting of gears, already a fishing line or a knife (working body).

The lawnmower also has the following elements:

  • safety guard;
  • handle;
  • belt, designed for the convenience of using the device;
  • The starter, which is used to start the internal combustion gasoline engine.

All parts of the brushcutter are shown in the photo below.

The starter mechanism on the trimmer is an integral part that performs engine starting. It is shown separately in the two photos below.

The starter mechanisms of the different models of petrol lawnmowers work on the same principle: when the engine is started the lugs shown in the photo above with the number 1 are engaged with the pawls 3. When the engine starts, they return to their previous position because of the centrifugal force. The wires 2 also play a similar role.

The process of returning to the initial position of the elements of the mechanism occurs due to the presence of a spring wound around the axis. It unfolds when the rope is pulled. After releasing the cord, it retracts and winds up because the spring is wound up. When starting the engine of the lawnmower, the starting mechanism rotates its shaft until it starts working (starts up).

Nowadays petrol brushcutters are equipped with two types of starter mechanisms:

The first option is much more common.

The starter motor on a trimmer can run for a long time without breakage. No one can predict how long it will last. Everything is determined by the original quality of the device and compliance with the rules of handling it.

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