What to do if the grass trimmer starter is jammed
Gasoline grass trimmer starter repair may be needed at the most inopportune moment. over, the problem can be solved in two ways: to replace a broken part or replace the entire assembly. The latter option will cost more. To repair the device with your own hands in most cases you will need only a screwdriver with an appropriate tip. Repair work does not take much time and does not require any special knowledge. It is enough to know the device, the principle of operation, the nuances of assembly-disassembly of the starter on the trimmer to achieve the desired positive result.
The gasoline engine is basically the starting point of the brushcutter Its output is in the 0.5 to 2.5 litre range.с. The movement from it is transmitted to the shaft inside the hollow shaft and then through a gear box, consisting of gears, to the line or to the blade (operating device).
The lawn mower also has the following parts:
- Protective cover;
- The 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 starting. It is shown separately in the two photos below.
Starter mechanisms of different models of chain saws work on a similar principle: during the start of the internal combustion engine, the ledges, marked in the photo above with the number 1, enter into the hitch with the pawls 3. When the engine is running, they return to their previous position because of the centrifugal force. The wire is also used to play a similar role. 2.
The resetting process of the mechanism components is due to a spring that is wound around the axle. It unwinds when the cord is pulled. After the cord is released, it retracts and winds up due to the coiling of the spring. When starting the lawnmower’s engine, the starter mechanism turns the shaft until the lawnmower starts working (starts up).
Today’s petrol brushcutters are equipped with two types of starter mechanisms:
The first option is much more common.
The starter on a trimmer can function for a long time without failure. It is not possible to state the amount of time it will work reliably. Everything is determined by the initial quality of the device and compliance with the rules for handling it.
Repair of the starter gasoline drill, lawnmower, grass trimmer with their own hands
No matter how good quality gasoline tools you use, during the construction process anything can happen to him, and at the most inopportune moment for this. It is not uncommon for problems to arise due to the breakdown of the starter. It happens that you are going to drill holes with a gasoline auger to install fence posts or mow grass with a trimmer, you start to start the machine, and only have time to pull the starter handle a couple of times, as the rope breaks, and the engine has already started, dashingly winding the remains of the cord on the flywheel, tears the pulley, the spring breaks. run to the store to buy a new. But of course, these are extremes.
Today we will consider the most common case, when the breakage is not so serious, and show how to repair the starter with their own hands, if the cord broke without any destructive consequences or does not uncoil due to the fact that the spring inside just came off, went out of the grip. At least you would like to believe it at first. But in order to find out whether this is true or not, you will need to disassemble the starter.
The main malfunctions of the grass trimmer starter
Determining the cause of a starting device failure is not difficult. There are several basic options:
These details are shown in the picture below.
It may happen that the starter mechanism is accidentally broken. The consequences will be dire if the torn rope winds around the flywheel of a running engine: then the spring will burst, the pulley will tear. But such cases, when you need a complete replacement of the starter unit, are very rare. In most cases, to fix the mechanism, it is enough to put a new spring or replace the cord.
How to change the starter cord?
It sometimes happens that it is not the spring that is to blame for the inability to start the starter, but the cord itself. It may jam or even tear. Disassembling a lawn mower or grass trimmer starter is versatile in its steps.
- Remove the starter pulley from the grass trimmer or lawn mower.
- Unscrew the main bolt holding the handbrake.
- Pull the spool and reel off the remains of worn cord.
- Untie the knot on the handle of the cord and pull its end out of it.
- untie the knot at the other end (at the beginning of the spool) and pull out the old cord. Untie knots that have become tight using pliers or pincers.
- Tie a knot in one end of the new cord, threading it through the hole at the beginning of the spool (closer to its axis).
- Wind a few coils of new cord onto the spool. If it is long, cut the excess.
- Tuck and weigh cord spring tensioner (if removed) and spring elements in correct sequence.
- Put the spool back in place and put the free end of the cord through the outlet of the starter and into the handle.
- Reinstall the starter assembly.
Twist the starter by the cord, start the lawnmower or grass trimmer engine. The bigger and more powerful the engine, the more jerks of the cord are needed at start up, the norm is no more than 7 times. The result is a quick and smooth start of the motor and the machine is ready for work.
Installing or replacing the starter motor springs on brushcutter, brush cutter, grass trimmer
But what to do if we have everything in order with the rope, and the coil (pulley) of starter does not unwind? Razglazemnade this question step by step on the example of the starter gasoline motor auger ADA GroundDrill, which has a pulley with 2 metal tendons on 2 hooks.
In the case of other types of manual starters with identical construction, which are widely used in gasoline brushcutters, trimmers and power drills, the entire process of repairing the starter will look the same, differing only in certain aspects.
Starter repair: disassembly
Unscrew the screw that secures the pulley to the starter cover. Taking out the tendrils, the spring
Pull the pulley itself out carefully so that the spring does not bounce in your face. Even with the most careful disassembly, it usually immediately flies out of the coil and sharply unfolds into a long metal strip or twisted rings
Carefully pull out the white starter coil. don’t hurt yourself with the spring!
If the spring is cracked or one of the hooks is broken, then the starter is not quick and easy to repair. you must replace the spring. To avoid spending money to buy a new starter, you can look for it on sale only.
In case the starter spring just snapped, t. е. one of the hooks is out of engagement, it is enough to reinsert it, if necessary, slightly tighten the hooks (just don’t break them off)!) Place the spring with the outer hook in the groove of the pulley and start twisting it, at the same time holding it with your fingers inside the coil and not letting it come out of there.
Pressing the spring against the pulley, in a circular motion reel the spring in
The first time you put the starter spring in may not seem so easy, but everything comes with experience. With a little practice, you can easily wind the spring in a pulley in a minute maximum.
Dismantling, disassembling the grass trimmer starter, replacing parts
First of all, the repair process begins with removing 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 when dismantling the start mechanism of the lawnmower, it is necessary to observe safety precautions, as the band spring in the compressed state has enough energy to injure a person.
Grass trimmer starter disassembly
This stage allows the master to establish the causes of failure of the start node, as well as to make defectoscopy of individual parts. Perform disassembly work should be in the following sequence:
Removed spring from the starter coil
Many experts note that at the first time to make the installation of the spring is difficult enough, because the owner when repairing the starter trimmer for grass will require not only the basic skills of a mechanic, but also patience.
Grass trimmer starter assembly sequence
Although the process of assembling the start mower unit is carried out in the reverse order of disassembly, there are a few nuances to which you should pay special attention:
Как переделать мотокосу под стартер с плавным пуском
Coil with the spring installed should be turned and mounted in a slot in the body of the starter so that all the tabs were in their original place.
Installing the grass trimmer coil in the starter housing
When assembling the starter, pay attention to the compression spring, which should be limited on both sides by steel springs. If this is not done, after the first season it will rub through the grooves in the pulley housing.
Tips for tensioning the strap spring
After installing the starter, the rope handle must be removed and inserted into the groove of the spool. Next, against the movement of the pulley at startup, it is necessary to make a certain number of revolutions, specified in the operating manual of the gasoline trimmer for grass. It is worth noting that the way of putting the spring on the trimmer and what to do will depend on the tension and the further performance of the node. At the final stage we pass a rope through a special hole and fix it with the knob.
Grass trimmer starter rope replacement
In the beginning it is necessary to remove the torn cord, choose a suitable length, depending on the model of the grass trimmer. Let’s pass through a special hole in the pulley and at the other end tie a knot to prevent the rope from jumping out of the start mechanism of the grass trimmer. Then we put the belt spring on the desired number of revolutions and install the handle.
One of the key nodes of the lawnmower is the starter, designed to make it easier to start the engine of the device. Like other parts, it occasionally breaks. In this case, there are two solutions to the problem: the repair of the grass trimmer starter or its complete replacement. The second option is more simple, but expensive. In addition, the required part must first be found on the market, since different models of chain saws use different starters. If you have free time and a screwdriver with a suitable tip, you can restore the functionality of this node on your own, if you know how it works, what malfunctions are typical for it, and how to properly eliminate them. Read about all of this in this story.
Repair chainsaw starter with his own hands: how to put the spring, assemble, tension
If there are difficulties during the start of the tool, power is lost or there are problems in the fuel supply system, it is necessary to repair the chain saw starter with your own hands or take the tool to the service.
The structure of the chainsaw starter includes the following elements:
- the screw of the ignition system;
- return spring;
- The starter coil;
- spark plug;
- electronic unit;
- electrical wiring;
- power button;
- knob and cable.
Basic parameters of the chainsaw starting system:
The electromotive force appears in the system. The generated current with the help of an electronic unit is converted into electrical signals, which are transmitted to the driving elements. a spark is formed, which provokes ignition of the fuel-air mixture.
How to repair the starter on a chainsaw
The cause of malfunction of the chainsaw starting system can be:
Diagnosis of the starting system of the tool is carried out as follows:
Replacing the cord
In order to make the replacement of the cord, the following tools will be required:
Replacing the starter cord is done as follows:
Repairing the spring
Procedure for repairing the starter system spring:
How to put the spring
In order to install a new spring, you need to do the following steps:
Procedure for replacing the chainsaw starter cord:
Before installing a new starter, it is recommended to inspect it for defects, check the quality of the assembly and the presence of the guide bushing.
How to do chainsaw starter repair with your own hands Link to main publication
The starter for a chainsaw: the device, breakdowns and repair with their own hands
In the design of a chainsaw, the starter is responsible for the proper start of the engine of the tool. Over time, chainsaw owners are faced with the need to repair this important assembly. And, the sooner the malfunction can be corrected, the less the other important parts and mechanisms of the tool will succumb to wear and tear.
Design and principle of chain saw starter
Most well-known chainsaw manufacturers equip their products with starters that work on almost the same principle. The idea is this: in the groove in the body of the saw, there is a handle through which the cord is passed.
When the handle is raised sharply, the cord is also pulled, which engages the drum, which is in the ratchet mechanism. By means of this, the cylinder with studs, which is located on the shaft, is actuated.
During this, the crankshaft makes a couple of revolutions, which leads to compression of the fuel mixture, which at this point is between the cylinder head and the piston. When lowering the handle, on the contrary, the ratchet and the studs lose their contact, which causes the shaft to stop.
Increasing the power of the chainsaw increases the amount of fuel mixture that must be ignited when starting the chainsaw. In this case, to start the engine it is necessary to increase the number of pulls of the starter cord.
Manufacturers use a special steel starter return spring, which has excellent elasticity, to speed up the return of the reel mechanism.
Leading brands use other methods to make it easier to start the chainsaw:
- Pre-enrichment of the fuel mixture by means of a separate flap;
- Installation of an automatic decompression valve, which provides pressure reduction inside the chainsaw cylinder;
- Installation of a primer designed to pump the fuel before starting the engine.
The use of one of these technologies greatly facilitates starting and extends the life of the starter, which is especially noticeable at low temperatures.
Typical chainsaw starter breakdowns and repairs
If the starter motor malfunctions in various ways, you will not be able to start the chainsaw. Some of the most common starter breakdowns include:
To fix each of these faults with their own hands will require certain tools. Be sure to have a set of screwdrivers and a spare rope. Remove and inspect the starter for chain saw in the following order:
как намотать пружину стартера мотокосы.(тримера)
- To find the cause of the breakdown starter with a chainsaw will need to remove. To do this, unscrew the screws that hold the protective cover with the starter attached to it with a screwdriver;
- After removing the cover it is necessary to carefully unscrew the screw through which the starter is attached to the protective cover;
- Then you need to try to smoothly start the starter. to do this, remove the spring and clamps from it;
- Then the coil with the cable is removed from the starter for inspection.
As a result of the inspection you may find a number of typical faults. These include:
- Various damages to the pulley in the form of tears or cracks mainly in the back of the part. they interfere with the normal operation of the entire starter;
- Damage to the starter spring of the facilitated start. in such cases, not only the spring itself may be defective, but also the place of its fixation. this is the most vulnerable part of the spring;
- The starter flywheel dog is damaged.
In either case, any defective part must be completely replaced with a new part.
How to replace the chain saw starter spring?
To replace the old spring in the disassembled starter, proceed as follows:
- Before installing the chain saw starter spring, it will be necessary to remove the mechanism cage. this must be done very carefully so as not to break the part;
- Then you need to look inside the cage. in it you will see the spring wrapped around the C-shaped element. To pull the spring out, fix the top of it with your finger and pull the starter grip aside a bit;
- After removing the old spring, it is necessary to coil a new part. At the same time, try to avoid kinking and twisting the new spring element;
- To assemble the chain saw starter spring, you will need to act as carefully as possible, otherwise one wrong movement can lead to the unwinding of the part;
- After you have managed to fully insert the spring into the starter, it is necessary to carefully fix the cage.
The last step is to assemble the chain saw starter motor and try to start the tool. It is quite possible that you will have to make 10 to 20 jerks. this is needed in order to finally place the spring in its place.
Design and principle of operation of the starter on a trimmer
The gasoline engine is basically the main part 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, which is located inside the hollow rod, and then through the reducer, consisting of gears, already to the line or knife (working body).
The lawnmower also has the following elements:
- the protective cover;
- A belt, designed to make the device easy to use;
- Starter unit for starting a petrol internal combustion engine.
All parts of the brushcutter are illustrated in the photo below.
The starter on the trimmer is an integral part that performs engine starting. It is shown separately in the two photos below.
Starter mechanisms of different models of chain saws work on the same principle: during the start of the engine, the ledges, marked in the photo above with the number 1, enter into the hitch with the dogs 3. When the engine starts running, they return to their previous position because of the centrifugal force. The wires also play a similar role 2.
The process of resetting the mechanism elements is due to the presence of a spring wrapped around the axis. It turns around when the rope is pulled. After releasing the cord, it will retract and coil up due to the unwinding of the spring. when starting the engine of the lawnmower, the starter mechanism turns the shaft until it starts working (starts up).
Today’s petrol brushcutters are equipped with starter mechanisms of two types:
The first variant is much more common.
The starter on the trimmer can function without damage for a long time. It is not possible to state precisely how long the machine will work reliably. Everything is determined by the original quality of the device and the observance of the rules of its handling.