How to install a spring in a recoil starter for a petrol trimmer? It is possible to do this at home. To me.
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Starter repair brushcutters, trimmers Internet shop of spare parts for garden equipment -.
The starter spring is wound. It only remains to collect starter and charge the spring to the desired value
The most important thing in the process of self-repair of a starter is to correct it. to collect .
After the spring is fully wound, you need to carefully turn the coil over and insert it into the starter housing so that the second hook of the spring fits into the groove in the housing.
Installing the pulley (in this photo - black), we look through the hole in it so that the spring hook falls into the groove on starter cover
Then, if there is a spring under the screw, we first install it, not forgetting to put washers on the bottom and top of the spring.
Carefully insert the cup with antennae into the grooves of the coil and tighten the screw.
Make sure that the washer on the spring does not fall 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 press the screw more tightly 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 does not come back. However, loosen the starter screw this problem disappears. It is easy to fix such a starter malfunction: just select a spring of the same diameter, but slightly longer, or put an additional washer. If we just loosely tighten the screw, then it will twist and fly out, and this will already increase the likelihood of the spring breaking, since the pulley will not fit snugly enough to the starter housing.
We 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. How to assemble the handle on the trimmer Echo srm yourself Installing the throttle cable for Replacement. This is so that after you have cocked the spring, you can thread the rope through the hole in the starter cover. The other end of the rope must be fixed in the reel even before it is installed in the body; the rope does not need to be wound onto the pulley before tensioning the spring - you will do it later.
Before charging the spring, estimate how many revolutions of the reel the rope should be wound. Let's say the length of the rope at the starter of the Ada GroundDrill-5 motor drill corresponds to 5.5 turns around the reel. In this case, we make at least 6 turns of the coil in the direction opposite to the direction of winding.
So let's get started. Without winding up, insert the rope into the groove in the reel specially designed for it. Everything is ready, we proceed to tensioning the spring. To do this, we rotate the coil counterclockwise - in the direction opposite 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 reel directly by the rope attached to it. If the experience is not enough, then you can rotate the pulley itself with both hands, but the rope will get in the way, which can create additional inconveniences. After the required number of turns is done, we pass the end of the rope through the hole in starter cover , put on the handle, secure it with a knot. It is more convenient to do this together with a partner, so that the end of the cable does not accidentally wind up inside the starter.
By the way, you can make some modifications to the design of the starter on your own in order to more reliably fix the end of the spring inside the coil. At this point, who has enough imagination for that. Now I will explain why this is needed. 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 coil groove. And this despite the fact that the coil is almost snug against starter cover and the spring there certainly should not hang freely up and down, and even more so until the spring leaves the engagement. It turns out that when the cable is pulled, the spring pulls out, pulls it out of the groove. In this case, you can do the following: cut out a narrow strip of metal, which, in thickness, could squeeze tightly into the groove of the coil along with the spring hook itself. So the hook will not dangle freely in the groove, which means it will not be so easy for it to break out.
A metal plate tightly inserted into the gap between the spring hook and the groove walls will securely hold the spring
Another solution to the problem: drill small holes in the coil on both sides of the groove and, by inserting the spring hook, fix it with a thin wire threaded through these holes. But here you need to contrive to make sure that this wire does not touch when rotating the starter cover from the inside and thus does not slow down the pulley. Alternatively, loosely tighten the screw or replace it with a similar slightly longer one. You can think of an option with the installation of some kind of gasket between the cover and the coil.
Does your power tool starter design differ from the above? Faced another malfunction, or do you know the best way to repair a starter yourself? Ask questions, share your experience with others - together we can solve the problem of frequent starter breakdowns once and for all!
An indispensable tool for a modern summer resident or owner of a private house is a petrol cutter, which allows you to effectively and efficiently put the adjacent territory in order.The period of active use of brushcutters is in late spring until October. Modern units are equipped with powerful and durable internal combustion engines, reinforced transmission and main components. Despite this, physical wear, manufacturing defects or improper operation lead to failure of the trimmer. In order to repair the trimmer with your own hands, you must have at least basic knowledge in the field of technology and little experience in repairing it.
The main unit of any gasoline tool is the internal combustion engine (ICE), which, through various methods, transmits the torque to the actuator. In a modern petrol cutter, a duralumin rod (pipe) is used as a transmission element between the engine and the trimmer head, inside which the drive shaft is located.
Thanks to the high-revving engine, the line speed can reach 13 thousand revolutions per minute, depending on the manufacturer of the scythe. In order to exclude mechanical and thermal damage to the gearbox, a special hole is provided in its housing for the introduction of grease in the form of ointments. To make the headset easier for the owner during long-term work, all brushcutter models are equipped with a durable shoulder strap.
Regardless of the manufacturer, almost every model comes with a line and steel knives.
The cross-section of PVC trimmer line can vary from 1.5mm to 3.0mm.
Made of durable polymer, it is subject to intense wear and tear during mowing and, as a result, breakage. Therefore, from time to time it is necessary to check the presence of a fishing line in the head and, if necessary, replace it. It is recommended that you purchase an extra bobbin to quickly replace it with a spool with no line.
ICE trimmers on the market today are equipped with a D-shaped, U-shaped or T-shaped handle, where the main controls of the unit are located. For example, in a braid with a U-shaped grip, the throttle key and stop / start toggle switch are located on the right grip. In the D-shaped version of the handle, the throttle control button is located directly on the rod.
Due to the presence of many components and parts, repairing a trimmer with your own hands means eliminating breakdowns that prevent its normal operation. It should be noted the most basic malfunctions of gasoline streamers:
The trimmer motor is not picking up speed;
Breakdown of the cylinder-piston group (CPG);
Ignition malfunctions;
There is no connection between the internal combustion engine and the trimmer head;
Mechanical knocking during unit operation.
Repair of CPG petrol cutters
The main unit of any internal combustion engine is a cylinder-piston group (CPG), which can fail due to wear of parts of parts or poor quality of the fuel mixture.
Lubrication of rubbing units in a petrol cutter is carried out by adding a certain proportion of oil to gasoline. This process can be disrupted due to old oil precipitating out. In this situation, when the trimmer is started, the motor overheats and in a matter of minutes the most expensive breakdown occurs. To eliminate the malfunction that has arisen, a complete replacement of the CPG will be required, namely: the piston, oil seals, cylinder and piston rings. If you are not an ICE repair technician and do not have experience working with technicians, then you will hardly be able to fix the engine without the help of a specialist. Details on the stages of piston trimmer repair can be found here.
If the ignition of the petrol mowers fails, the spark on the candle disappears and, as a result, the fuel mixture does not ignite.
Spit spark plug design
In this situation, it is quite important not to rush to replace the coil, since the cause of the breakdown may be the lack of contact in the switch on the control handle.
An important point when troubleshooting the trimmer ignition will be the diagnostics of the section, where the distance between the side and center electrodes should be 0.5-0.7 mm. In addition, it is necessary to pay attention to the steel O-ring on the spark plug, the loss of integrity or deformation of which can lead to etching of air from the combustion chamber and, as a result, reduce the power of the streamer.
Ignition flywheel with coil
If the replacement of the check of the electrical circuit, the spark plug and its contacts did not give positive results, then you should pay attention to the trimmer ignition module, namely the clearance with the flywheel. Regardless of the design features and the manufacturer of the brushcutter, the distance between the ignition coil and the flywheel should be no more and no less than 0.2 mm. To restore the optimal value of the gap, you will need to loosen the coil mounting bolts and set the trimmer ignition with a special measuring probe.
A clear sign of a malfunction of the engine power system is the absence of traces of the fuel mixture on the spark plug electrodes, which may be associated with the following defects:
Trimmer Fuel System Components
due to a clogged hole in the gas tank, a vacuum is created, which prevents the normal flow of gasoline into the carburetor;
due to the poor quality of the fuel and the ingress of foreign particles, the fuel filter installed in the tank is clogged;
non-flow of the mixture into the combustion chamber as a result of a clogged carburetor.
You can quickly determine the cause of the malfunction by dismantling the fuel hose leading to the carburetor. If the fuel mixture flows out in a thin stream, then you should pay attention to the carburetor. If there is no jet, it is necessary to clean the breather with a thin needle (a small hole in the gas tank cap) or replace the fuel filter.
If fuel enters the carburetor, it must be cleaned or adjusted. Adjusting the carburetor trimmer means restoring optimal fuel mix.
Trimmer carburetor with adjustment screws
To do this, pay attention to three adjusting screws: maximum speed (H), minimum (L) and idle speed (LA). To start the adjustment, you need to fully tighten the screws H and L and loosen one turn each. Then we start the braid and let it warm up for 10 minutes to adjust the power system in operating mode. After warming up the internal combustion engine, press the gas supply button until it stops (12,000 rpm). We restore the idling mode by unscrewing the screw LA. As soon as the trimmer head starts rotating, tighten the screw until it stops.
One of the common faults of the petrol mowers is the incorrect operation of the internal combustion engine, namely the drop in power with increasing speed (the scythe stalls).
The reason for this is that the exhaust system is clogged with burnt oil particles. Often manufacturers make mufflers prefabricated and cleaning is quite simple. If the design of the spark arrester is non-separable, then it must be placed in water with detergents, and then dried with an ordinary or industrial hair dryer. Frequent clogging of the exhaust system indicates non-observance of the proportions of oil and gasoline.
Unfortunately, like any other technical device, the brushcutter sometimes breaks down. For example, the engine is not running or there are problems with the carburetor or starter , even if you periodically carry out maintenance of the unit: change the cutting line or teeth, fill it only with high-quality fuel and oil, and also constantly lubricate the gas trimmer gearbox. In order not to pay for repairs, which can cost you a pretty penny, you can study the brushcutter device and carry out the repair yourself.
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Typical circuit , according to which manufacturers make their brushcutters:
The middle part is a rod, which is hollow inside and along which a cable is laid, connected at one end to the engine, and at the other end to a gearbox that drives the cutting line. Buttons are also located here, with the help of which the operator can control the petrol cutter. A belt is attached here to relieve the weight of the trimmer, which the operator puts on the body to make it easier for him to do his job;
The lower part consists of a gearbox and a cutting tool, covered with a special casing. This is done specifically so that the operator is not injured by debris, glass and other dangerous objects that may be in the grass that have flown into him.
The most frequent breakdowns that occur during the operation of the unit are:
the engine does not work, the trimmer will not start;
the engine manages to start, after which it does not hold speed and stalls abruptly and for no reason;
the brushcutter bar vibrates strongly;
the gearbox is overheating;
low speed at the cutting line.
Before proceeding with the repair, study the instructions, which must be included in the kit so that correctly diagnose .
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Troubleshooting the ignition unit we start with a candle. To check if it works, just unscrew it, bring it to the body and try to start the engine. If everything is in order with the candle, you will see a spark flashing between the body of the brushcutter and the candle.
Another source of trouble is that a mixture of oil and gasoline floods the channel into which the plug is screwed. Try drying the canal and drying and cleaning the candle itself. You need to leave the device to dry for about one hour, then screw the spark plug back in and try to start the engine. If fuel constantly floods the candles, you are unlikely to fix this kind of malfunction yourself, so you will need to contact a qualified specialist.
If you determine that the source of the problem does not lie with the ignition unit, it is time to check. condition of unit filters , fuel and air. The air filter will need to be replaced with a new one if, after removing the old filter, you find that the engine starts easily without it. To make sure the fuel filter is working, do the following:
disconnect the hose from the filter outlet;
try starting the engine;
if the fuel mixture begins to flow out of the filter hole, then everything is in order with it; otherwise, replace the filter.
The last reason the engine won't start could be a clogged breather or muffler. You should make sure they are clean. If not, clean the exhaust port or breather.
A carburetor is a rather complex element of a brushcutter that should not be repaired by an unprepared person on his own, with the exception of performing some simple operations, for example, cleaning the inner surface of the product from contamination without completely disassembling it. Adjusting the carburetor trimmer it is better to entrust it to specially trained people who will be able to carry out the finest adjustment without disrupting its normal performance.
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To prevent gear wear in the gearbox and their premature failure, care must be taken to ensure that they are constantly lubricated. Most manufacturers indicate in the instructions supplied with the brushcutters that the gearbox must be filled with oil at least once a season. If you often and extensively work with the trimmer or hear unpleasant noises coming from the gearbox, check its condition and, accordingly, you will have to lubricate it more often.
To lubricate the gearbox, you need to do the following actions:
Find a plug on the gearbox, the role of which is reduced to the fact that it closes the technical hole used to put a new lubricant;
Remove this plug using the special wrench supplied with the trimmer;
Use lubricants such as Litol-24, Oleo-Mas or ordinary machine oil. Apply them to the gears through the hole in the gearbox. In the process of performing the operation, slowly turn the gears to achieve uniform lubrication;
Tighten the plug on the gearbox and start the motor. Make sure that the extraneous noises that were previously heard from the gearbox have stopped.
hard knocking most likely the reason for this is that the bearings have worn out due to intensive operation, insufficient lubrication, or due to dirt entering them. There is only one solution in this situation - to replace the failed units.
If you find that the trimmer head has stopped working and is not rotating, the most likely cause of the problem is wear of gears, more precisely, their teeth which are no longer in contact with each other and do not transmit torque from the motor. The malfunction is eliminated by disassembling the gearbox and replacing the gears with new ones.
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Modern technologies and equipment make it possible to produce the best and optimal technical solutions that become effective assistants in the arrangement of a summer cottage or a personal plot. The green lawn and other plantings can grow rapidly, a petrol cutter is used to tidy up the local area and mow the lawns, which is also called a brushcutter or trimmer, a petrol mower.
Traditional braids are inconvenient and unsafe to use, require a significant investment of time and effort, which will help save gas mowers, combining functionality and practicality in their design. In the photo of the petrol brush, you can see various high-tech devices, which are inherent in a set of operational characteristics, including such parameters as increased productivity and a long service life.
A convenient and reliable trimmer is a technical device consisting of individual mechanisms, parts and elements that can wear out, become unusable and damaged during intensive use.
Even with regular technical inspection, maintenance procedures and careful storage, such devices and their individual parts require repair and even replacement, all repair procedures can be performed independently.
Brief content of the article:
The easiest way is to give the petrol cutter for repairs, having allocated a certain amount of funds from the family budget, prompt and high-quality repair with your own hands is no less simple and convenient if you want to understand the design of the petrol cutter and fix all the problems.
The mass and piece production of trimmers is based on the use of generally accepted technology, a typical design scheme consists of certain elements and parts, it is important to know them when carrying out independent repair work:
top part. The basis of the entire structure, where all important elements are collected, such as a starter, a carburetor and a petrol cutter engine;
middle part. A hollow rod, inside it is a cable that connects the motor and the gearbox, which drives the cutting line. In this part, there are fasteners for distributing the weight of the entire structure and a belt for fixing the trimmer on the belt of a person using the trimmer for its intended purpose;
Bottom part. It houses the gearbox and cutting elements, which are hidden under a practical cover to protect the user. The casing provides an increased level of safety, preventing large fractions of debris, stones and glass from entering a person while working with a petrol cutter.
Knowing exactly the internal structure and the principle of operation of the trimmer, you can independently carry out repair measures for the structure or replace individual components that have become unusable, using the repair instructions.
The most common and common failures of the unit that need to be corrected on their own include the following problems:
engine malfunction, due to which the brushcutter does not start and does not work;
increased vibration of the brushcutter bar, which complicates its intended use;
increased overheating of the gearbox, its accelerated heating during operation;
slow and weak functioning of the cutting line at insufficient speed;
clogging of the starter grille, causing overheating of the engine and its refusal to work;
fast and frequent clogging of the carburetor due to the use of low-quality fuel;
clogging of the air filter due to non-observance of the measures for the care of the device.
All these problems can lead to the fact that the device will lose its working capacity. Before ordering the necessary spare parts for the mowing, a visual inspection and diagnostics of the device should be carried out.
Particular attention should be paid to individual spare parts and units of the device, to check them you will not have to contact a professional master, a set of diagnostic measures will help you to identify the consequence of a loss of performance with your own hands.
If the trimmer motor does not start or stalls immediately after starting, when the gearbox overheats or during the operation of the device, extraneous noises are heard and vibration is clearly felt, it is important to visually inspect and identify a non-working unit.
To optimize the preparatory measures before repairs, you should carry out a simple diagnosis and check step by step:
the presence of fuel in the tank and lubrication in the main units;
serviceability of the spark plug and its performance;
the cleanliness of the fuel and air filter of the brushcutter;
clogging of the outlet channel and breather of the device;
the quality of the fuels and lubricants used.
To determine the functional performance of the petrol-cutter's ignition, it is necessary to determine whether the spark plug is working by testing the appearance of a spark when it comes into contact with the body of the functional device.
The spark plug itself can be replaced with a new one, having previously dried the candle channel, if necessary, the old element is also dried, cleaned with special devices and returned to its place.
In the process of inspecting the carburetor, it is worth paying attention to the possible leakage of the fuel used; in order to identify problems with the carburetor, the following measures must be taken:
purging the fuel hose to eliminate possible blockage of the element;
checking and replacing the gasket between the engine and the carburetor;
determination of tightness and maintenance of constant pressure in the unit.
If necessary, you can personally disassemble and thoroughly clean the unit using gasoline, the jet and channels are cleaned using compressed air.
The gearbox transmits torque from the motor shaft to the cutting tool, its gears during operation must be absolutely clean and always lubricated with special grease.
Carrying out a technical inspection on your own once a season will allow you to get rid of the need to repair the gearbox or replace it, with the purchase of an expensive new unit.
The starter is necessary to bring the trimmer into working condition, its diagnostics consists in checking the tension of the starter cord connected to the teeth of the starter coil, which are often destroyed during an abrupt start.
An inoperative starter in a petrol cutter cannot be repaired; it must be replaced with a working unit as part of a mandatory technical inspection or a set of repair measures.
Video (click to play).
Cutting elements require special attention and care, which must always be cleaned of dirt and cut grass after use. Regular inspection and thorough preparation of the device for operation will help to avoid costly and time-consuming repairs, and always be confident in the performance of the petrol brush.
