How to Remove the Starter from a Grass Trimmer. How to Repair the Starter on a Chainsaw
Single Axle Tractor Starter: Design, Repair and Maintenance Recommendations
The starter is one of the main nodes of the lawnmower, which greatly facilitates the start of the engine of the tool. Its failure can happen at the most inopportune time, which certainly entails significant changes in the daily plans of the site owner. The problem can be solved in two ways: to repair the trimmer starter for grass with your own hands, or to make a replacement node entirely. The easiest way to fix the starting system is to replace it completely, but from a financial point of view, buying a new starter may seem far beyond your means. For self-troubleshooting it is enough to prepare a screwdriver with the appropriate tip and read the following recommendations.
Gasoline grass trimmer starter repair may be needed at the most inopportune moment. At the same time you can solve the problem in two ways: to replace a broken part or replace the entire unit. The latter option will cost more. To repair the device with your own hands in most cases you need only a screwdriver with the appropriate tip. Repair work doesn’t take long and doesn’t 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.
Design and principle of operation of the starter on the trimmer
The gasoline engine is basically the heart of the brushcutter Its output is in the 0,5 to 2,5 l range.с. The movement from it is transmitted to the shaft inside the hollow rod, and then through a gearbox consisting of gears to the line or blade (working body).
Also the lawnmower has the following elements:
All brushcutter parts are presented in the photo below.
The starter on the trimmer is an integral part, which performs the start of the engine to work. It is shown separately on the two photos below.
Starter mechanisms of different models of brushcutters work on a similar principle: when starting the engine, the tabs, marked in the photo above with the number 1, engage in a hitch with the pawls 3. When the engine starts, they return to their previous position because of the centrifugal force. Similar role is also performed by the wires 2.
The process of resetting the mechanism elements is due to the presence of a spring coiled around an axis. It unwinds when the rope is pulled. After the cord is released, it retracts and winds up because of the coiling spring. When starting the lawnmower’s engine, the starter mechanism turns the shaft until it starts working (starts up).
Today’s petrol brushcutters are equipped with two types of starter mechanisms:
The first variant is much more common.
The starter motor on a trimmer can work for a long time without causing malfunctions. It is not possible to specify the uptime unambiguously. Everything is determined by the original quality of the device and the observance of the rules for handling it.
Assembly of the starter is carried out in several stages:
The reel is turned over, installing it so that the spring bend fits exactly into the groove of the housing, as in the photo below;
Doing the above manipulation, you need to put two washers. If this is not done, the spring will eventually damage the plastic cup, and when it is removed, it will begin to jam. How to install a spring in a manual starter; how to make your own starter on a chainsaw? Since. It makes you feel like spring has sprung. To eliminate this defect, you need to install this part of a longer length or an additional washer.
When such details are not enough, you can simply unscrew the screw a little, and the starter assembly will start to work without fixing. But this option is only temporary. It’s best to repair it as soon as possible.
How to change the starter cord?
It happens that it’s not the spring that’s to blame for the inability to start the starter, but the cord itself. It can get jammed or even torn. Disassembling the starter cord of a lawnmower or grass trimmer is versatile in its steps.
- Remove the starter motor unit from your grass trimmer or lawnmower.
- Unscrew the main bolt that holds the handbrake.
- Pull out the spool and reel off the rest of the worn cord.
- Untie the knot on the cord handle and pull the end of the cord out.
- Untie the knot at the other end (at the beginning of the spool) and remove the old cord. Untie knots which have become tight using pliers or pincers.
- Tie a knot at one end of the new cord, thread it through the hole at the beginning of the spool (closer to its axis).
- Wind a few turns of new cord onto the spool. If it is long, cut off the excess.
- Tuck and weigh the spring cord tensioner (if removed) and spring elements in the correct order.
- Reassemble the spool and put the free end of the cord through the starter grip and out the hole in the handle.
- Reinstall the starter unit.
Twist the starter by the cord, start the engine of the lawnmower or grass trimmer. The bigger and more powerful the engine, the more jerks the cord will need when starting, the norm. no more than 7 times. The result. quick and smooth start of the motor, the readiness of the unit to work.
Repair kickstarter lawn mower with their own hands
In detail: repair kickstarter lawnmower with his own hands from the real master for the site olenord.com.
Let’s repair starter from brushcutter. Often there is a situation, you start and the rope does not come back. How to fix? To begin with, 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. We remove the upper mechanism, do not lose the spring and see what happened. The spring is completely off, it may break or fly off.
How to repair? First you need to untie or cut the rope and remove the handle, pull out the mechanism. Carefully, remove the face because the spring will shoot 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 ends are intact, the spring is gone.
What to do? Wind it back on. It’s easy to do. You take the inner mechanism, there is a groove for the spring. That’s where it came off. Take it and unbend it a little, but not too much, as the spring is forged. If you over tighten it too much, it may break and then you won’t be able to do anything. Although the spring is inexpensive, but you have to look for it, order it. So we put it here and carefully, holding it, start winding it on the inner side. It doesn’t always work the first time.
We wound the spring, it is tight. Do not worry, even sometimes it is not possible at once. Practice, there is nothing difficult.
The starter repair of gasoline trimmer for grass can be needed at the most inopportune moment. The problem can be solved in two ways: to replace the broken part or to replace the whole assembly. The last variant is more expensive. To repair the device with their own hands in most cases, you need only a screwdriver with an appropriate tip from the tools. Repair work does not take much time and does not require 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.
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 inside the hollow shaft, and then through a gearbox consisting of gears to the line or the blade (working body).
The lawnmower also has the following elements:
- Belt, designed for the convenience of using the device;
- starter, which serves to start the gasoline internal combustion engine.
All parts of the brushcutter are presented on the photo below.
The starter mechanism on a 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 the same principle: when starting the engine, the lugs, marked in the photo above with the number 1, engage in a hitch 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 resetting the elements of the mechanism is due to the presence of a spring wound around the axle. It unhooks when the rope is pulled. After releasing the cord, it retracts and winds up due to the coiling of the spring. When starting the lawnmower’s internal combustion engine, the starting mechanism turns the 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 specify the period of trouble-free operation unambiguously. Everything is determined by the original quality of the device and compliance with the rules for handling it.
It is not difficult to determine the cause of the starter unit failure. There are several main variants:
These parts are shown in the picture below.
it can happen that the starter mechanism will be accidentally broken. The consequences will be dire, if the ragged rope winds around the flywheel running ICE: then the spring will burst, the pulley will tear. But such cases, when a complete replacement of the starter unit is required, occur very rarely. In most cases, to fix the mechanism, it is enough to put a new spring or replace the cord.
To make a repair starter trimmer for grass, you will need to first disassemble and then assemble. The process is not very complicated. For this work you need a screwdriver with a tip of the desired shape.
It is necessary to do everything accurately, observing the safety measures, mainly so that the spring, if accidentally released, will not injure the master.
Disassemble the starting mechanism in order to install new parts in place of the broken ones in the following sequence:
- unscrew the screw that secures the pulley with the starter cover with a screwdriver;
- Remove the spring and the tendons;
- carefully remove the pulley (you must turn your head or work with goggles and gloves);
- determine why the starter mechanism is broken;
- if the spring is almost completely destroyed, it is replaced;
- if the spring is out of the hook, it is installed in its original place, having bent the tendons before (the photos show the laying process);
- after installing the spring plate inside the groove, carefully perform its twisting.
To change the spring, you must work carefully and carefully: it can, under the influence of the force caused by setting 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.
Independent replacement of the starter cord and chain saw starter spring (grass trimmer)
Every chainsaw needs a starter motor to start it quickly. Rapid cranking of the tool crankshaft compresses the fuel-air mixture fed into the engine and ignites it. Therefore, the normal operation of the chain saw starter determines the performance of the entire mechanism.
Gasoline chain saw starter mechanism
Almost all leading chainsaw manufacturers equip their products with starters of similar working principle.
It is no coincidence that specialized stores offer universal starter motor designs that are equally successful for STIHL, Husqvarna, Makita chain saws, as well as for Chinese semi-official imitations of these brands. Only chainsaws made in Russia (Lesnik, Ural and others) have some peculiarities.
The chain saw starter motor works as follows. In the groove of the body is installed handle, through which the cable is passed. If the handle rises sharply, the cable is pulled out, and enters into the engagement of the drum ratchet mechanism which transmits the movement to the drum with the splines provided on the shaft.
In doing so, the crankshaft makes several revolutions, and the working mixture in the space between the piston and the cylinder head is compressed. Accordingly, when lowering the handle the contact between the ratchet and the splines is lost and the shaft stops.
As the engine volume increases, so does the amount of fuel-air mixture required for its subsequent ignition, so the number of jerks for the starter rope for high-powered saws increases. In order to accelerate the bowl’s return, involute return springs made of steels with high resilience properties are used.
To make it easier to start your chain saw, you can do the following:
Chainsaw starter repair
When a chain saw is started often, some of the starter components are constantly exposed to dynamic loads. As a result, the cord can break, some teeth in the ratchet can get chipped, and the shaft can turn at a slower rate. That’s why the revision and even the repair of the starter rope. operations that are sometimes carried out several times a season.
REPLACEMENT OF CROWN
When pulling it, the cable is constantly rubbing against the starter housing.
To replace them disassemble the housing of the assembly, and carefully lift the ratchet drum so as not to allow the return spring to come off its sockets.
It is better to do such work by two people: the assistant fixes the spring, while the cable is being replaced. After installing the rope in the crank and in the rope drum grooves, the rope is wound onto the pulley and the body is assembled.
If the starter spring material was not of good quality, the spring will break (usually at its connection to the drum, where it forms a loop). In this case it is not necessary to replace the spring.
It is enough to carefully clean its surface from dirt and traces of grease, carefully grind the place of destruction, then release the spring at 600 650 ° C (steel spring should get crimson color).
Let it cool slowly, and at 100-150°C you can turn its end accurately to the shape of the limiting projection on the internal drum surface (steel will get the needed plasticity) and put it back. The elastic properties of the spring will not change.
HOW TO PUT A SPRING ON A CHAINSAW STARTER?
It is not easy to fit the starter spring into the right groove even for an experienced user. First twist the spring to its former diameter and install it in the hub cavity of the drum.
Weed eater won’t start. Husqvarna Starter Pawl replacement tutorial. #smallenginerepair
The outer end of the spring is secured by a limiting tab, and the outer end should be positioned with a screwdriver against the hole in the lock. A screwdriver aligns the loop on the inner end of the spring with the hole, and then you lower the disk.
check that the ratchet catch is in place by turning the disc. Then the ratchet itself is assembled.
After the spring is installed, it is necessary to adjust its tension. For this purpose, a cable is inserted into the groove on the circumference, and the return spring is wound around it. After slackness has been eliminated, it is better to screw the spring on a few extra turns to guarantee the desired tension of the part.
Repair of the ratchet mechanism itself at home is not recommended, since many operations will require the use of a CNC machine. It is easier to buy a new assembly in specialized stores.
Husqvarna 128r brushcutter starter repair (modification). From “A private home” series.
A slight modification of the starter design.
The starter motor is one of the main components of the lawnmower, which makes starting the engine of the tool much easier. Its failure can happen at the most inopportune time, which certainly entails significant changes in the daily plans of the owner of the site. The problem can be solved in two ways: to repair the trimmer starter for grass with your own hands, or to replace the whole node. The easiest option for troubleshooting the starting system will be its complete replacement, but from a financial point of view, the purchase of a new starter can seem far beyond repair. For self-troubleshooting it is enough to prepare a screwdriver with the appropriate tip and read the following recommendations.
As with any garden or construction gasoline tools, trimmer starter for grass consists of a plastic housing, which sets the pulley with a pre-wound cord (schmorglalka). In order to ensure automatic twisting of the rope after a jerk of the starter, a belt spring made of alloy steel is fixed at the back of the pulley. On the front of the pulley is mounted ratchet, through which occurs meshing the starter with the drive shaft of the engine trimmer for grass. Depending on the manufacturer and the design of the brushcutter, the pulley with a ratchet can be a single unit, or be assembled from two separate parts.
The principle of grass trimmer starter operation does not differ much regardless of the model.
The main components of the grass trimmer starter
By jerking the starter lugs on the pulley engage with the pawls, which diverge in different directions under the centrifugal force if the engine is successfully started. There are also models where the ratchet is spring-loaded on the body side and the back rotation of the pulley removes the teeth of the meshing from the motor shaft. Of course, with frequent and prolonged use of the grass trimmer no one is immune to breakage of the drive cord or wear of the belt spring. Because in this case, you will need to repair the starter trimmer for grass, which can be carried out with their own hands.
Currently, there are two main malfunctions of the starter gasoline trimmer for grass are widespread:
In practice, there are cases where, for whatever reason, there is damage to the starter housing and the broken cord winds up on the motor shaft, which will certainly lead to a breakage of the spring and cracks on the housing. In this situation, the local repair of the starter lawnmower will not be possible and a complete replacement of the engine starting unit will be required. In other cases, troubleshooting will be reduced to the replacement of the spring or cord.
First of all, the repair process begins with the removal of the entire starter from the grass trimmer. This process is not inherently complicated and will only require unscrewing a few screws with a suitable locksmith tool. It should be noted that it is necessary to observe safety precautions when dismantling the lawnmower starting mechanism, as the belt spring in the compressed state has enough energy to injure a person.
This stage allows the master to establish the causes of failure of the start unit, as well as to make defectoscopy of individual parts. The disassembly should be performed in the following sequence:
Removed spring from the starter coil
Many experts note that the first time to make the installation of spring is difficult enough, because the owner when repairing trimmer starter for grass will require not only the basic skills of a mechanic, but also patience.
Although the process of reassembling the lawn mower starter assembly is carried out in the reverse order of disassembly, there are several nuances to which you should pay special attention:
The coil with the installed spring must be turned over and mounted in the groove of the starter housing so that all the protrusions were in their original place.
Installing the grass trimmer reel into the starter housing
The chainsaw starter motor includes the following elements:
- ignition system screw;
- return spring;
- the coil of the starting system;
- the spark plug;
- electronic unit;
- electrical wiring;
- power button;
- knob and cable.
The basic parameters of the chainsaw starting system:
After the power button is pressed, the flywheel begins to rotate along with the magnet that is on the.
An electromotive force appears in the system. The generated current is converted by the electronic unit into electrical signals, which are transmitted to the driving elements.Spark is formed, which ignites the air-fuel mixture.
How to install the spring
In order to install a new spring, the following steps must be taken:
- Carefully remove the cage of the mechanism.
- Inspect the inside of the cage where the spring mechanism is located near the C element.
- Fix and tighten the upper part of the spring with your finger and pull aside the handle of the trigger mechanism.
- Remove the worn out mechanism and wind a new spring. Avoid kinking or twisting the element.
- Assemble a new spring mechanism. It is recommended to do this slowly so that the mechanism does not unwind.
- Tuck in the spring and insert it into the starter mechanism.
- Carefully fix the cage.
Replace the cord
In order to make the cord replacement, the following tools will be needed:
Replace the starter cord as follows
- It is necessary to unscrew the fixing screws that hold the side cover with a screwdriver.
- Then remove the starter from the tool body.
- After that you need to turn the cover and make inspection.
- Then dismantle the clamp and the spring.
- Untie the knot in the rope.
- It is necessary to pull out the pulley, on which the cord is wound. Remove the cord and replace it with a new one.
- Then put the pulley in place and tie the rope into a knot. Install the clamp and spring.
- After that, screw the cover with the fixing screws.
- To finish, reassemble the starter motor and fasten the retaining screws.
READ What oil to put in petrol for grass trimmer
Design and operation of the starter on the trimmer
The gasoline engine is basically the starting point for the brushcutter Its output is in the 0.5 to 2.5 litre range.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 the fishing line or knife (working body).
Trimmer Repair. Replacing the Recoil Starter Assembly (Echo Part # A051001312)
Also the lawnmower has the following elements:
- Belt, designed for the convenience of using 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 start-up. It is shown separately in the two photos below.
The starter mechanisms of the different models of chain saws work on the same principle: when the engine is started, the projections marked 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 also play a similar role 2.
The process of return to the initial position of the elements of the mechanism occurs due to the presence of a spring wrapped around the axis. It reverses when the rope is pulled. After the cord is released, it retracts and winds up due to the coiling of the spring. When starting the lawnmower’s internal combustion engine, 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 variant is much more common.
The starter mechanism on a trimmer can function for a long time without failure. It is impossible to state unequivocally the period of trouble-free operation. Everything is determined by the original quality of the device and compliance with the rules for handling it.