Well, a very useful article for owners of this tool or those who want to purchase it ...
Repairing the spool of a garden trimmer is a well-known painful topic for the owners of this tool, but here I dare say that I have found a worthy solution to the problem ...
In previous articles, readers probably remember how we proposed to modernize the trimmer coil by strengthening the holes for the fishing line, but, as practice has shown, after a month or two, the coil itself is either erased or cracked and scattered (familiar?)
And then trips for this spare part begin in different bazaars - shops, and even if you are lucky to find an option suitable for your trimmer, it is not a fact that the new coil will last longer than the old one, while its price will be about half the cost of the trimmer itself ... (familiar?)
Having gone through all these dances, the idea began to ripen in my head to buy a good large coil from an adult "thoroughbred" trimmer (motocross) and fix it on the axle of my trimmer through a homemade adapter (such coils are simply screwed onto the axles of their trimmers ...).
But when choosing such a coil, I noticed in time that they all have a left-hand thread, and my trimmer twists clockwise, in short, the idea failed ...
I remembered that I once saw Boshevsky small trimer room with a reel for one antenna of a fishing line
He mowed with such a fit for several minutes, mowed normally, but the line was frayed at the base (in the hole in the corner), and the corner itself was "picking" the ground every now and then ...
It was here that the confusion gave out an engineering thought, and after half an hour I was already carrying this creation out of the garage for testing -
In a nutshell - screwed to the base of the old reel with self-tapping screws, two nuts are welded to the nozzle with holes - one under the fishing line, the other - a counterweight, the nut under the fishing line is machined with a smooth chamfer (in other words - a hole under the fishing line in the form of a smooth funnel)
The result - I myself did not expect, everything was mowed and without any vibrations.
Then I went even further, bought a 3mm fishing line for adults motokos (faceted), you cannot tie knots on it, so I did this - we make a hole in the tip with an awl and insert a small boot stud -
After a month of testing, I can proudly say the following - I have never seen a better trimmer coil.
Firstly, it simply cannot be killed, the "coil" can crawl along the ground without any problems, any (random) stones do not care, (only sparks fly), and secondly, 500 Chinese watts with such a fishing line mow any grass.
Due to its thickness, the fishing line takes longer to take care of, I made such sections in advance, then I take a few pieces and go to mow, on average 3-4 pieces are enough for an hour of work.
A petrol or electric trimmer is the only solution for mowing grass in hard-to-reach places that a wheeled lawnmower cannot handle. As a cutting tool in trimmers, metal knives or a special line are used, which is tucked into the trimmer coil. But, unfortunately, trimmer heads become unusable over time during operation. Some malfunctions can be eliminated by hand, and some require a complete replacement of the mowing head.
Trimmer mowing heads come in a variety of designs, both simple and complex. The picture below shows semi-automatic trimmer head from Husqvarna brushcutters (Husqvarna) disassembled.
This type of head is present in the complete set of most mowers and electric trimmers, such as Stihl (Calm), Patriot (Patriot), Champion (Champion), Bosch (Bosch), Huter (Hooter) and others. The device of the mowing head is quite simple. It includes the following details:
There are also simpler trim heads shown in the following photo.
All these attachments do not allow changing the length of the line in a semi-automatic mode (after pressing a button). If the cord breaks, you have to stop the mower and change it manually.
Electric trimmer and petrol cutter users often face a problem with a semi-automatic cutterhead. Coil malfunctions can be as follows:
If the line does not lengthen when you lightly hit the trimmer button on the ground, then the reasons for this may be the following.
Option 1 - a bite has occurred, i.e. clamping the cord between turns ... This problem usually appears if the user has been winding the line on the reel unevenly, with intersecting turns, or winding it with insufficient tension. In the latter case, when the mowing head rotates at high speeds under the influence of centrifugal force, the cord begins to tighten, as a result of which inter-turn clamping of the fishing line is possible. To fix the problem, you will have to disassemble the coil on the trimmer and rewind the cord correctly, that is, in even turns with good tension.
Also, the line can be lengthened without using a button if the spring is loose. If checking the spring has confirmed this fact, then several washers must be placed under it in order to enhance its clamping properties.
Trimmer owners, mostly newbies, find themselves in confusion, bordering on panic, when the need arises to change the cutter or line in the reel. Very often, when trying to unscrew the mowing head, users simply render it unusable, not suspecting that it is unscrewing in the opposite direction. ... To prevent this from happening, if you need to replace the tool, we recommend that you read the step-by-step instructions below.
There are a large number of trimmer heads (not automatic) on sale, which are of low price and good quality. But sometimes situations arise, for example, in the country house, when the trimmer coil has broken down and its repair is impossible, the store is far away, but you need to mow. In this case, you can quickly, literally in a few minutes, make a simple trimmer attachment for fixing the fishing line from ordinary plywood with a thickness of 10-12 mm.
This homemade mowing attachment is attached to the shaft. with a nut ... It will not work to tighten or unscrew the nut without fixing the shaft. To replace the cord, it will be enough to loosen the screws, insert a piece of line of the required length and press it down again.
VIDEO
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 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.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-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 the central piston group 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 lie in 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 frequent faults of the petrol mowers is the incorrect operation of the internal combustion engine, namely the drop in power when the speed increases (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.
Spool for the trimmer with your own hands.
Sofa Expert 1 category 2 หลาย เดือน ก่อน
Sergey Shepel 2 หลาย เดือน ก่อน
Crap is complete .. It’s okay to cut the lawn .. But if you mow for a serious, then you swing these knots and change the fishing line, as it erases very quickly .. Show how you mow this stray at least to the butt to the foundation, or next to concrete walkway ..
Vyacheslav Sinelnikov 2 หลาย เดือน ก่อน
Shepel. You watch the video then shout. His trimer is small, dacha. From that and advice for summer residents. He does not bring the site to serious work. And you?
Nikolay Razinkov 2 หลาย เดือน ก่อน
Nikolay Razinkov 2 หลาย เดือน ก่อน
Oleg Kostetsky 2 หลาย เดือน ก่อน
Your video was very well thought out and helped me solve the problem with the bobbin, and did not try to put a clamp inside the pipe to connect the wires and pass the line through it and clamp it with a bolt or the bolt will be erased. Another thought is to thread the fishing line through the pipe and then wrap it around the pipe and push it through a second time through a loop with two ends of the fishing line. The 2nd option came out for me but I have not tried it on a large area. If it fits, please comment
Andrey Kotov 2 หลาย เดือน ก่อน
This is not the second year I have been doing this. I also have a thick-walled fishing line, only in my place of nails. center knot. and I increased the line by removing the black skirt from the guard! I'm mowing twice as fast, maybe three!
Nikolay Stadnik 3 หลาย เดือน ก่อน
And if instead of a fishing line, you use a metal cable of about 1 mm?
MrHomePractic 3 หลาย เดือน ก่อน
TRIED, I charged the bicycle cable, the experiment did not pass, the cable fluffs up in 5 seconds and flies.
An electric scythe or a trimmer, like any electric tool, has a limited service life. With an increase in the intensity of operation, for various reasons, the life of the device decreases.
You should be prepared that at any time during operation, the electric scythe can break, but such situations can be avoided if you regularly disassemble, inspect and revise all important elements of the scythe.
Malfunctions of electric scythes can be very diverse, it can be either a breakdown in the electrical part of the engine and wiring, as well as in the mechanical part.
In most cases, it is not difficult to repair a trimmer or scythe and you can do it on your own if there is a minimum tool and basic concepts in technology. Well, for the readers of the site elektt.blogspot.com, I will reveal the main faults and secrets for quick and reliable repair of your electric scythe, consider an example of repairing Bosch and Gardener electric scythes.
The design of most electric braids is not a complex device, the main components, be it a trimmer or braid, are an electric motor, a power wire, a button with a capacitor, a spool with a line that is fixed to the motor shaft or more complex mechanical options for braids where torque from the engine is transmitted to the spool through flexible shaft, but among electric options for braids, this option is rare.
To identify faults in the electrical part, as a rule, only one inspection is not enough; you need a multimeter or at least a tester with a continuity.
The check begins with the power cable, if it is damaged, it is either repaired or replaced.
The voltage should appear when the button is pressed, if the voltage is present, then we can safely say that the trimmer motor is faulty, it must be disconnected and carefully inspected.
Using a multimeter in the resistance test mode (the smallest limit is Ohms), touch the contacts of the brushes or the graphite brushes themselves with the probes, the tester should show a resistance of no more than 100 Ohms.
If the resistance is infinite (unit on a multimeter), then try to turn the motor shaft without removing the probes.
The following procedure can be used to identify the specific cause of a motor malfunction when the motor brushes are not ringing.
The collector motors in these devices are arranged in such a way that the stator and rotor windings are connected in series, and in expensive models of electric motors a thermal relay is also connected to this serial circuit (110 degrees), such a relay in normal conditions keeps the power contact closed.
To identify the culprit of the malfunction, it is necessary to remove the insulation in the form of cambric from the fluoroplastic where the windings and the thermal relay are connected and ring each winding separately with a multimeter, as well as the thermal relay itself.
The most loaded mechanical elements of electric scythes are bearings and a trimer reel (spool).
The line has run out. According to the instructions provided, you should wind the fishing line on a spool.
The line is tangled. If the reel has not received damage, then you need to cut or unwind the line and, if necessary, rewind the entire spool.
The line is stuck together. Due to the rather intense work and high overheating, the plastic lines of the fishing line can fuse with each other. It is necessary to rewind the spool with new line and inspect the damage to the bobbin itself.
The motor is running but the line spool does not rotate.Most likely, there was damage to the structure of the reel with line. The spool bottom attachment points can break off, you need to completely disassemble the bobbin and, if necessary, modify the mount or replace it altogether. In most electric trimmers, the bobbin is simply pressed with its plastic housing onto the motor shaft and, if overheated, when the plastic melts, it can turn and fly off altogether.
Both devices showed no signs of life, in the on state the engines did not work.
The case for both devices consists of two halves, the self-tapping screws are on one side, which is convenient for disassembly.
After disassembling, we proceed to inspect the insides and troubleshoot.
During the inspection, it was found on the engine trimmer Bosch , on one of the brushes, which is fixed by a pressure spring, a copper conductive wire flew off, which naturally was the reason for the absence of voltage on the brushes and the motor did not rotate.
The wire was restored to its place, and along the way the collector pads were cleaned, with a soft cloth soaked in alcohol, to a copper sheen. The brushes were in good condition and did not need replacement.
It was also found that the switch does not create a reliable electrical contact, it was necessary to press the button with effort, it was decided to disassemble the button, its contacts were cleaned of carbon deposits and smeared with KONTAKT S-61 current protective spray.
WITH electric scythe GARDENER it was not so simple, it lay for quite a long time in a broken state, and in the literal sense of the word “broken”, its rod at the engine casing attachment point was broken in half; apparently, its operating conditions were so difficult.
With the help of perforated plates from the metal profile mountings, a new mount of the engine body to the electric braid bar was not cleverly made. The integrity of the structure has been restored, albeit not in aesthetic, but in a reliable way, because in an electric brace, its main function is its functionality.
The engine shaft was turning noticeably hard; an internal examination revealed burnt collector plates and worn brushes. The plates were sanded to a shine and the brushes were replaced with new ones.
In view of the long operation without lubrication and subsequent storage of the device in an aggressive environment, the bearings are a little stuck and the motor shaft rotates unnaturally with difficulty.
Further inspection of the electrical part led to the button, it was completely broken from its mountings, although it was pressed, but the tester showed its malfunction. The button is not collapsible, so it was replaced with a new one. The fasteners had to be restored with hot melt glue.
In addition to the broken bar, there was a crack on the plastic protection, apparently someone did not drop it weakly. The scythe could work with it, but it was decided, as far as possible, to restore the protection structure.
Naturally, simply gluing such a loaded and impact-prone object with glue would not be a reliable solution. Therefore, using the same perforated plates from the metal profile, two brackets were made that created a “monolithic” connection between the two parts of the cracked body.
When the brushcutter was assembled, it was found that the bar at the points of attachment of the handle was poorly fixed and rotated, therefore, the places where the plastic protrusions of the handle body were pressed against the metal of the bar were additionally sealed with a strip of cloth tape. Now the design has no extra backlash.
The spool (spool) runs out of line.In most spools, the net feed is semi-automatic, with a light hit of the spring-loaded button on the ground, the line is fed to the exit. If the line does not feed, then you need to remove and disassemble the spool - spool and, if necessary, wind new line.
The line may be too long due to the fact that the blade, which is designed for cutting excess line along the length, is dull or not at all.
A large hum and vibration during engine operation may indicate that the bearings need lubrication or they have completely used up their resource.
Most of the electric motors in the scythes and trimmers are collector-type and do not have a speed controller; with a decrease in the voltage in the network, the speed and power decrease.
Does the engine not turn? We look at the presence of power on the plug, if everything is in order, then the device needs to be disassembled.
Using a multimeter (tester), first ring out the power cord, the fuse, if there is one, and the button.
The cord may be broken, in which case the engine may intermittently start.
Video (click to play).
Some electric motors are equipped with a thermal fuse that is built into the motor housing and tripped from overheating or simply failed. A working thermal fuse must restore its operation when the engine cools down.
