How To Wind A Spring On A Trimmer Starter

The starter is one of the main components of the brushcutter, which greatly facilitates the start of the tool engine. Its breakdown can happen at the most inopportune time, which will certainly entail significant changes in the daily plans of the owner of the site. There are two ways to solve the problem: repair the trimmer starter with your own hands, or replace the entire assembly. The easiest way to troubleshoot a startup system will be to completely replace it, but from a financial point of view, buying a new starter may seem far too heavy. To fix the breakdowns yourself, it is enough to prepare a screwdriver with the appropriate tip and familiarize yourself with the following recommendations.

The device and principle of operation of the starter

Starter brushcutters with details

As with any garden or construction gasoline tool, the trimmer starter consists of a plastic case into which a pulley with a pre-wound cord (shmorgalka) is installed. In order to automatically twist the rope after a jerk, a starter spring made of alloy steel is fixed on the back of the pulley with a starter. A ratchet is mounted on the front of the pulley, through which the starter engages with the drive shaft of the trimmer motor. Depending on the manufacturer and the design of the scythe, the ratchet pulley can be either a single unit or assembled from two separate parts.

The principle of operation of the trimmer starter is practically the same regardless of the model of the unit.

The main components of the trimmer starter

When the starter jerks, the protrusions located on the pulley mesh with the dogs, which, when the ICE is successfully started, diverge in different directions under the action of centrifugal forces. There are also models where the ratchet is spring-loaded from the side of the housing and when the pulley is rotated backward, the teeth of engagement are removed from the motor shaft. Of course, with frequent and prolonged use of the trimmer, no one is safe from a broken power cord or wear of the tape spring. Therefore, in this case, you will need to repair the trimmer starter, which you can do it yourself.

The main breakdown of the starter

Currently, two main malfunctions of a gas trimmer starter are common:

  1. Breakage of a power cord (schmorgalka);
  2. Failure of the tape spring or its disengagement from the pulley.

Trim tab spring

In practice, there are cases when, for some reason, the starter housing is damaged and the dangling cord is wound on the motor shaft, which will certainly lead to a spring break and cracks in the housing. In this situation, local repair of the brushcutter starter will not be possible and a complete replacement of the engine start unit will be required. In other cases, troubleshooting will be reduced to replacing the spring or cord.

Dismantling, disassembling the trimmer starter, replacing parts

First of all, the repair process begins with removing the entire starter from the trimmer. This process is inherently not complicated and will only require unscrewing a few screws with a suitable bench tool. It should be noted that when dismantling the trigger mechanism, it is necessary to observe safety precautions, since the tape spring in a compressed state has sufficient energy to injure a person.

Analysis of the starter Lawn Mower

This stage allows the wizard to establish the causes of failures of the launch unit, as well as to diagnose individual parts. Disassembly should be carried out in the following sequence:

    Unscrew the screws securing the pulley to the starter housing;

Removing the trimmer starter

Remove the pulley from the starter

Pulley removal from the brushcutter housing

Removed spring from starter coil

Many experts note that it is quite difficult to mount the spring the first time, therefore, when repairing the trimmer starter, the owner will require not only the basic skills of a locksmith, but also patience.

Trimmer Starter Assembly Sequence

Although the assembly process of the start of the brushcutter launch unit is carried out in the reverse order, there are several nuances to which special attention should be paid:

    The coil with the spring installed must be turned over and mounted in the groove of the starter housing so that all the protrusions are in their original place.

Installing the trimmer coil in the starter housing

Installing a compression spring

White cup with trimmer coil mustache

When assembling the starter, pay attention to the compression spring, which on both sides should be limited by steel springs. If this is not done, then after the first season she will wipe the grooves in the pulley case.

Tape spring tension recommendations

Trimmer Starter Spring Tension

After installing the starter, it is necessary to dismantle the rope handle and insert it into the reel groove. Further, against the course of the pulley movement at start-up, it is necessary to make a certain number of turns indicated in the instruction manual for the gas trimmer. It is worth noting that the tension and further performance of the assembly will depend on how to put the spring on the trimmer and what tension to do. At the final stage, we pass a rope into a special hole and fix it with a handle.

Replacing the trimmer starter rope

Installing the starter rope in the trimmer

At the very beginning, it is necessary to remove the tattered cord, select the appropriate length depending on the trimmer model. We pass it through a special hole in the pulley and tie a knot at the other end to prevent the rope from jumping out of the trimmer trigger. Next, we erect the tape spring to the required number of revolutions and mount the handle.

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How To Wind A Spring On A Trimmer Starter

  • Trimmers
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by ZusarLawn Mower. 07/05/2018 0

How to repair a starter on a trimmer

Repairing the petrol trimmer starter may be necessary at the most inopportune moment. With all this, the problem can be solved by 2 methods: change the broken part or change the entire assembly. The latter option will cost more. To repair the device with your own hands in most cases Only a screwdriver with a suitable tip is useful from tools. Repair work does not take much time and does not require special knowledge. It is enough to know the device, the mechanism of work, the aspects of the assembly-disassembly of the starter on the trimmer in order to achieve a suitable good result.

The device and principle of operation of the starter on the trimmer

Internal combustion engine. this, in principle, is the main part of the scythe. Its power lies in the range of 0.5-2.5 hp. The movement from it is transmitted to the shaft located inside the hollow rod, and then through the gearbox, consisting of gears, already a fishing line or a knife (working body).

Also, the brushcutters have the following elements:

  • protective cover;
  • a pen;
  • belt designed for ease of use by the device;
  • a starter used to start a gasoline internal combustion engine.

All details of Lawn Mower are presented on a photo further.

The starter on the trimmer is an integral part that starts the engine into operation. It is depicted separately in the 2 photos below.

Starter mechanisms of different models of brushcutters work on a similar principle: during the start of the internal combustion engine, the protrusions marked with the number 1 in the photo above enter the hook with the dogs 3. When the engine starts to work, they return to their previous position due to the action of centrifugal force. A similar role is also played by procrastination 2.

The process of returning to the initial position of the parts of the mechanism is due to the presence of a spring, fancy around the axis. How to disassemble the starter, trimmers with our further cock the spring to the number we need. It unfolds when the rope is pulled. After releasing the cord, it is retracted and wound due to the folding of the spring. During the start of the internal combustion engine, the trigger mechanism rotates its shaft until it starts to work (starts).

Today, gasoline scooters equip starter mechanisms of 2 types:

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The first option is even more common.

The starter on the trimmer can work without breakdowns for a long time. Trimmers were revs, about the same as in the top 80, the starter stands like. It is impossible to indicate exactly the period of uptime. Everything is determined by the initial quality of the device and compliance with the appeal rules with it.

The main malfunctions of the starter trimmer

It is not difficult to find the cause of the breakdown of the starting device. There are several main options:

  • breakage of a cord (rope);
  • when the spring breaks or disengages.

The indicated parts are shown in the photo below.

How To Wind A Spring On A Trimmer Starter

It may happen that the starter mechanism is broken. The consequences will be deplorable if a tattered rope is wound around the flywheel of an operating ICE: then the spring will burst, the pulley will rip off. How to repair the starter on how to wind the line onto the trimmer spool correctly. But such cases when a complete replacement of the starter assembly is required occur very rarely. In most cases, to fix the mechanism, it is enough to put a new spring or replace the cord.

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Repair starter Lawn Mower, trimmer

Removing and disassembling the starter, replacing broken parts

To repair the trimmer starter, you will need to disassemble it first, and then assemble it. This process is not particularly difficult. You will need to work shape screwdriver.

Everything should be done carefully, observing safety precautions, mainly so that the spring in case of an accidental departure does not injure the master.

Video: How To Wind A Spring On A Trimmer Starter


Starter assembly analysis

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

  • unscrew the screw fixing the pulley with a starter cover with a screwdriver;
  • take out the spring and antennae;
  • carefully remove the pulley (you need to turn your head away or work, having previously worn glasses and gloves);
  • determine why the trigger mechanism has broken;
  • if the spring has collapsed almost completely, then it is replaced;
  • when the spring exits the hook, it is installed in its original place by bending the antennae before it (the photos show the installation process);
  • after the spring plate is installed inside the groove, carefully twist it.

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

Immediately put back the spring plate does not always work. It often slips, so attempts must be repeated until the desired result is achieved.

Starter assembly

Assembly starter assembly carried out in a number of stages:

  • the coil is turned over, installing it so that the spring bend exactly fits into the groove of the case, as in the photo below;
  • stack two washers, between which a spring is placed;
  • put in place a cup with antennae;
  • tighten the screw (photos below).

When doing the above manipulations, it is necessary put two washers. If this is not done, then the spring will eventually damage the plastic cup, and when it is pulled, wedging will begin. How to install a spring in a manual starter; how to make a starter yourself on a chainsaw? How. Because of this, a feeling appears, as if the spring has flown. To eliminate this drawback, you need to install this part of greater length or an additional washer.

When such parts are missing, you can just a little bit unscrew the screw, and the starter assembly will start to work without wedging. But this option is temporary. it is better to repair it qualitatively as quickly as possible.

Spring tension

After installing the spring, tighten it. To do this, perform the following steps:

  • remove the handle from the starter cord;
  • then the rope is inserted into the reel groove;
  • spring is tightened by rotating the coil in the opposite direction to the clockwise direction (winding);
  • make the required number of revolutions indicated in the operating instructions for the used trimmer model and corresponding to the length of the cord used;
  • at the very end, the rope is threaded into the hole provided for this, located in the starter cover;
  • put the handle in place, fixing it with a knot.
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If after repair the spring continues to fly, you can get rid of this in the following ways:

  • cram a suitable piece of plate into the groove at the location of the spring hook;
  • drill holes on both sides of the groove in the coil, into which to insert the spring hook and fix it with a wire.

Replacing a torn cord

A torn rope is replaced in the following sequence:

  • the old cord is removed;
  • choose a rope of suitable size (thickness and length);
  • threading it through a special hole located in the coil, tie a knot;
  • cock up spring, producing the required speed;
  • fasten the handle.

It is better to tighten the spring plate together with the partner so that the edge of the cord does not wound inside the starter mechanism.

It is not difficult to assemble the starter on the trimmer and wind the spring, only this should be done carefully and with caution. For different models of gas brush, the breakdowns of the starting mechanisms are the same, so they are repaired in a similar way. There are some nuances associated with their design features.

How to wind a spring on a trimmer starter

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Today we will consider the most common case when the breakdown is not so serious and show how to repair the starter with your own hands, if the cord breaks without any destructive consequences or is not wound up due to the fact that the spring inside has simply fallen off and is out of gear. At least, initially I want to believe in it. But in order to find out whether it is or not, you will need to disassemble the starter.

How to repair a gasoline engine starter with your own hands?

In the case of a break in the starter cord, everything is clear: we take out the old rope, take a suitable length and thickness (linen possible), thread it through the hole in the coil, tie a knot. Next, we cock the spring to the speed we need, only then we fix the handle. and voila! details on how all this is done are shown below.

Installation or replacement of a starter spring of a Lawn Mower, a motor-drill, a trimmer

But what if we have everything in order with the rope, and the starter coil (pulley) does not reel? Consider this issue step by step on the example of the ADA GroundDrill gasoline motor drill starter, which has a pulley with two metal antennae for 2 hooks.

In the case of other types of manual starters of a similar design, which are widely used in gasoline trimmers, trimmers and motor drills, the entire process of repairing the starter will look similar, differing only in some nuances.

Starter Repair: Disassembly

Unscrew the screw that secures the pulley to the starter cover. We take out the antennae, spring. The pulley itself is pulled out carefully so that the spring does not bounce into the face. Even with the most accurate disassembly, it usually flies out of the coil immediately and spins abruptly into a long metal strip or twists into rings.

Carefully pull out the white starter coil. do not get hurt by the spring!

If the spring bursts or one of its hooks and hooks breaks, then it is not possible to repair the starter simply and quickly. replacement of the spring is required. In order not to spend money on the purchase of a new starter, you can only search for it on sale.

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In case the starter spring just broke, that is, one of the hooks is out of engagement, it is enough to insert it, if necessary, slightly tightening the hooks more tightly (just do not break it!) Install the spring with an external hook in the groove of the pulley and start twisting it while holding it fingers inside the coil and not letting it pop out.

Fill starter spring

Pressing the spring to the pulley, in a circular motion we wind the spring inward

The first time insert starter spring It may not seem so simple, but everything comes with experience. With a little training, you can easily wind the spring into the pulley in a maximum of a minute.

Winding the starter spring is done. It remains only to assemble the starter and cock the spring to the desired value

How to assemble a starter?

The most important thing in the process of self-repair of the starter is to assemble it correctly.

After the spring is fully wound, you need to carefully turn the coil and insert it into the starter housing so that the second spring hook enters the groove of the housing.

When installing the pulley (black in this photo), we look through the hole in it so that the spring hook falls into the groove on the starter cover

Then, if there is a spring under the screw, we first install it, without forgetting to put washers on the bottom and top of the spring.

Carefully insert the cup with the antennae into the grooves of the coil and tighten the screw.

Then watch that the washer located on a spring did not drop out. Why is it important? The fact is that the spring scratches the plastic cup with its end, as a result of which the latter wears out and begins to more tightly press the screw against the coil. For this reason, a situation may arise that is very similar to a spring break: the handle is pulled out of the starter but not returned. However, when loosening the starter screw, this problem disappears. To fix such a malfunction of the starter is simple: just pick up a spring of the same diameter, but a little longer, or put an additional washer. If we just tighten the screw slightly, it will twist and fly out, and this will increase the likelihood of spring breakage, since the pulley will not fit snugly against the starter housing.

They screwed the coil to the body, now we need to tighten the spring. Before this, it is necessary to remove the starter handle from the rope in advance. If the knot is too strong, then you can simply cut it off or try to untie it, for example, using a pair of pliers. This is done so that after you cock the spring, you can thread the rope into the hole in the starter cover. The second end of the rope must be fixed in the coil before it is installed in the body, it is not necessary to wind the rope onto the pulley before pulling the spring. do it after.

Before you cock the spring, estimate how many revolutions of the coil the rope should be wound. Suppose the length of the rope at the starter of the Ada GroundDrill-5 motor-drill is 5.5 turns around the coil. In this case, make at least 6 revolutions of the coil in the direction opposite to the direction of winding.

So let’s get started. Without reeling, insert the rope into the groove in the reel specially designed for it. Everything is ready, proceed to pulling the spring. To do this, rotate the coil counterclockwise. in the opposite direction to the direction of rotation of the coil when winding the rope. It is more convenient to do this not on the knee, but by pressing the starter with one hand to the floor, and with the other turning the coil directly behind the rope attached to it. If the experience is not enough, then the pulley itself can be rotated directly with two hands, but the rope will interfere with this, which can create additional inconvenience. After the necessary number of revolutions is done, we pass the end of the rope through the hole in the starter cover, put on the handle, fix it with a knot. It is more convenient to do this together with a partner, so that accidentally the end of the cable does not wound inside the starter.

By the way, on our own you can make some refinement in the design of the starter in order to more securely fix the end of the spring inside the coil. Then anyone has enough imagination. Now I will explain why this is necessary. It often happens that the spring in starters of this type after the first such independent repair and installation of the starter on the unit flies again after a few jerks. the hook does not hold in the recess of the coil. And this is despite the fact that the coil is almost tightly attached to the starter cover and the spring there should not be free to hang up and down, and even more so until the spring comes out of engagement. It turns out that when the cable is pulled, the spring pulls out, pulls out of the groove. In this case, you can do the following: cut a narrow strip of metal, which in thickness could be squeezed into the groove of the coil along with the spring hook itself. So the hook will not freely hang in the groove, which means it will not be so easy to break out.

A metal plate tightly inserted into the gap between the spring hook and the groove walls will hold the spring securely

Another way to solve the problem is to drill small holes in the coil on both sides of the groove and, having inserted the spring hook, fix it with a thin wire threaded through these holes. But here you need to manage to make sure that this wire does not touch during rotation of the starter cover from the inside and thus does not slow down the pulley. Alternatively, tighten the screw loosely or replace it with a similar slightly larger length. You can consider the option of installing some kind of gasket between the cover and the coil.

Is the design of the starter for your gas tool different from the above? Faced with another malfunction or do you know the best way to repair a starter with your own hands? Ask questions, share your experience with others. together we can solve the problem of frequent starter breakdowns once and for all!