When you mow with a trimmer, how to open the air damper. First start of the lawn mower.
Summer days have arrived and summer cottages The lawn mowers began to rattle as usual. This tool is good for everyone - powerful, mobile. Using a gasoline trimmer, you can mow the grass and get rid of dried weeds. However, it happens that the brush cutter does not start or works intermittently, without developing full power. There's no time for work anymore! As FORUMHOUSE users say, “you pull the starter handle more than you mow.”
When installing the evaporator, certain requirements must be met. It is always mounted perpendicular to the movement of the vehicle, so that acceleration forces do not affect its membranes. It is always set below level expansion tank with antifreeze to prevent air pockets from forming inside. Vaporizers are sold in kilowatts, and it's nice to overload. For example, the engine is one hundred kilowatts, then we need an evaporator of 120 kW, but not in the first stage of the gas inlet is reduced, when the high gas pressure in the cylinder must be reduced at the membrane 20 and the spring 19 from the image.
Often, starting difficulties arise not only in experienced lawn mowers, but also in completely new ones. What to do in this situation? There is only one way out - listen to the advice of our experts and take advantage of their practical experience!
Grisha member of FORUMHOUSE
For methane evaporators, there are two recovery stages one after the other due to more high pressure in a bottle. This means that a methane evaporator can be used for propane-butane, but not vice versa. Cover 4 has holes that connect the back of the membrane to the reference pressure atmosphere. When the pressure in the mixing plate is below atmospheric pressure, Atmosphere pressure pushes the membrane and releases more gas. How more difference- the more gas. The screw 12 through the fork 8 has a certain resistance on the dosing membrane 5 and thus regulates its sensitivity.
- I bought myself a new one petrol trimmer and difficulties immediately arose with him. It starts very poorly. If you mow a little and then turn off the brush cutter, then start it “hot” again. a big problem than “cold”. I can’t imagine what to do with it, how to start a lawn mower correctly?
The instructions for starting a brush cutter from members of the forum are as follows:
Plug 10 always points down and serves to drain collected debris into the evaporator. It is good to drain over a period of time - for example, when changing the oil. Through nozzle 23 the throttle passes to the mixing plate. Here special elements vacuum evaporator. A small 15 nozzle is usually attached to one of the thin manifold vacuum hoses after the throttle body. With the help of this nozzle and the mechanics inside the evaporator, the gas supply from the reducing chamber to the metering chamber is interrupted.
Is there a vacuum, then the engine runs and the gas enters the metering chamber and then into the engine. There is no vacuum - the engine goes out and the gas supply stops without leaking. This is why the evaporator is called a vacuum. There is also no vacuum nozzle. Instead, an electromagnet When there is no pressure on it with control electronics, rather than gas passes through the evaporator - hence the name - electric. This circuit also has a bronze screw with a 26 needle, some vaporizers have it, others don't.
- Turn on the ignition.
- Pump up fuel using a silicone button (primer) located at the bottom of the carburetor. You need to do as many clicks (or a little more) as written in the instructions, usually about 8-10.
- Close the air damper.
- Lock the throttle lever with the stop button at high speed.
- Pull the starter handle 2-3 times. The engine should "catch".
If the engine “seizes” and stalls, then you need to move the air damper to the 1/2 position and try to start the engine again. If the engine starts, then let off the gas and move the air damper to the “open” position. Let's start work.
This screw bypasses and is called a screw for a separate minimum, and not, as most people say, an idle screw. Bypassing her. Let's assume we put a normal turbocharger on the turbocharger. When the turbine puts pressure on the system, it is higher than the evaporator reference, which is atmospheric. In this case, air enters the tile and inflates the membranes, they clog the gas and dent the car. The solution is very simple, and every ordinary evaporator can be made turbo. Here the template covers the outside of the evaporator 3 and 24 are no longer open to the atmosphere and are closed and are connected to each other by means of a hose 40 and a T-fitting of the free end of the closing T connected to the tube 2 shown in the connection diagram.
When performing manipulations to pump fuel, there is no need to be afraid of overfilling it. If this happens, and, as they say, “the spark plug is flooded,” then there is no need to unscrew it, just move the air damper to the “open” position and, holding full throttle, simultaneously crank the engine with the starter 2-4 times. After this, you can start the engine and start cutting the grass.
This hose is connected after the intercooler and turbine. The first photo shows that the lower part is developing, there is a gas filter. It's a good idea to check and hit it every now and then. If it's a bad change. The second valve is gasoline and fits only on carburetors. With full injections, all nozzles have one common conductor, that is best point fuel rupture. Evaporator like mechanical device has strong non-linear behavior and therefore its installation is compromised. This happens simply because the evaporator is a non-linear device, nothing to do but install electronics - lambda control or direct gas injection.
Time continuous operation lawn mowers is indicated in the trimmer's operating instructions. On average, we mow for 15-20 minutes, after which we turn off the trimmer and let it cool for 3-5 minutes. Also, the duration of continuous operation is significantly influenced by weather and operating conditions. In hot weather, when mowing tall grass, thickets of weeds, and under heavy load, the trimmer overheats faster.
The device is intended for assistance only and should not be relied upon by us. We warm up the car and run on gas, hanging the lambda signal wire. The adjustment should be such that the speed is stable, and when the gas is applied, there is no engine to think about, or no reaction zone. This is a bit of a nitpicky job, but let's just say we have good motor response at 0.6 - 0.7 volts at best. Adjusts the thrust of a thick hose screw. This screw is a maximum limiting screw, i.e. limits the evaporator power.
Many problems with gas trimmers arise from an incorrectly prepared fuel mixture. In two-stroke engines, lubrication is provided by special oil (not ordinary motor oil!) mixed with gasoline. If the oil is not mixed with gasoline, the brush cutter will quickly fail. Oil/gasoline are mixed in the proportion specified in the trimmer instructions. Usually it's 1:40 or 1:50. 
Gasoline Shifting This is probably the most controversial part of the entire system and needs to be done with precision and understanding. Under this option, the driver has complete control over changes in fuel, but the gas supply must be taken from a point where the voltage is only when the engine is running to ensure safety. This can usually be inferred from the gasoline pump power, but should be considered on a case by case basis. Another option is the "automatic petrol-gas switch" which usually has electronic protection and only choke when the engine is running.
Sometimes the question arises: a proportion of 1:50 is how much oil and gasoline?
Leonidd member FORUMHOUSE
The numbers mean the following: fifty parts of gasoline are taken for one part of oil. Hence: divide 1000 ml (1 liter of gasoline) by 50, we get 20 ml, that is, 1:50.
This way you can calculate the composition of the fuel mixture (gasoline/oil) in any proportions. To add oil to gasoline without “eyeballing”, you can take a 20 ml medical syringe, draw oil into it and “inject” it into a container for preparing the fuel mixture.
In addition, speed monitors under a certain limit must switch to gas. Each company has its own key schemes and there is no standardization. In large ones, like BKK and hunting have directions for installing each car, through the instructions follows and that's all. It's important to say that every circuit breaker has a hidden button or combination that allows the car's emergency lighting directly to the gas meter. You don't have much to be careful, it's an emergency.
Here, at the first stage, all the force that is received after contact and the fuse. However, the automatic key is also a double-bladed sword. Good keys have good filtering, the signal from the coil can be read by shutting off the fuel, gas exchange occurs when a certain speed is reached, but only after the throttle is released, and when the gas runs out, the system returns to gasoline. However, cheaper cheats are filled with last century elements, the offset is poor and the filtering is not very good.
During the engine break-in period (this is approximately the operation of the trimmer on 2-3 tanks), the amount of oil can be increased. For example, mix it with gasoline in a ratio of 30:1.
An insufficient amount of oil mixed with gasoline leads to increased wear of the cylinder-piston group. An excess of oil in the mixture, although not so fatal, is also harmful. Coking of the piston rings, rapid formation of carbon deposits in the combustion chamber, and a drop in engine power may occur. In addition, the mesh screen of the muffler becomes coked. Therefore, some users of our site (after the end warranty period on the trimmer) it is recommended to dismantle it.
Common problems include the vehicle weakening while in motion, fuel mixing, and built-in relay sticking, leading to gas leaks in the parked vehicle. Key 1 only understands whether the car is in contact. Pin 2 is the gas valves supply. Pin 3 is the power source for the key itself, as it is taken directly from the battery through the fuse. Pin 4 is the valve that stops the gas in the carburetor. Pin 5 - Turn signal and 6 and 7 - Level indicator. At the top of the key you can see a trimmer that adjusts the switching speed.
The gasoline used in the brush cutter is AI 92. The brand of gasoline is precisely stated in the operating instructions. You should not try to “boost” the engine by filling it with 95-grade gasoline. This can lead to overheating, unstable operation of the trimmer, and failure.
It is not recommended to leave fuel in the trimmer tank during a long break in operation. It is better to end the working day having completely worked out the entire mixture. If this is not done, then, since the gasoline from the engine will evaporate overnight and a thin film of oil will remain, the carburetor jets may become clogged. This will cause difficulty starting the engine the next day.
Both examples, as you will notice, are electric vaporizers. The connection principle with all the keys is the same, be careful that your foot switch is for what it was. When and if the fuel pump interrupts, be careful that the cables with thick paste power the relay legs as consumption and serious. These systems, also known as lambda eco-systems, aim to improve the efficiency of a gas vehicle to minimize harmful emissions and reduce costs. First you need to know what a lambda probe is.
It is also necessary to observe safety precautions when storing fuel. Many people pour gasoline into plastic bottle from under the water. Is it worth doing this?
Skyns member FORUMHOUSE
– Under no circumstances should you store gasoline in a plastic container from under water. When mixing the fuel mixture, a static charge accumulates, and you can “catch” a spark.
This is a sensor that measures the oxygen content in the exhaust gases while it judges how much fuel has entered the engine and whether correction is needed. We typically use narrowband sensors in our vehicles with output levels ranging from 0 to 1 volt. The first picture is a graph of such a probe. This level is called stoichiometric and has the best fuel combustion. So the probe itself is called "narrow gauge" it's just made properly to measure that level. It has nearly 70 years of experience in manufacturing and distributing a wide range of all types of hand and power tools.
Therefore, gas stations do not allow gasoline to be filled in plastic canisters, only in metal ones. Before pouring gasoline into a metal canister, it is better to place it on the ground, this will remove static from the body.
But there are situations when simple manipulations with a lawn mower do not help. The engine still won't start. In this case, “heavy artillery” is used - we check the power and ignition system, guided by the rule “the engine does not work if there is nothing to burn or nothing to set on fire.”
The company also offers a wide range of almost all types of tools and machines designed for gardening and other similar activities, such as chain saws, four-bike lawn mowers, hand hair and trimmer, nibbler, branch splitters, scraper blades, motorized drills for holes in the soil, circular saws for cutting building materials And road surfaces, water pumps, water jetting machines and others.
They are powered by engines internal combustion, electric motors powered by the network, and the number of wireless garden tools with electric drive increases. Combining decades of tradition with the development of small two-stroke internal combustion engines, it all explains why this mode of propulsion is predominant in the Hitachi garden or otherwise "outdoor".
skol00 FORUMHOUSE member
– The petrol trimmer loves cleanliness. It is necessary to monitor the cleanliness of the air filter and fuel. It is better to let gasoline purchased at a gas station sit for 2 days and pass through simplest filter- a piece of flannelette material.
Useful material from which you will learn how to start a capricious gasoline trimmer that does not want to work!
Summer time has come, and personal plots The lawnmowers began to rattle as usual. Great tool, powerful and mobile. Using a gasoline trimmer, you can mow the grass and get rid of dried weeds. However, there are times when the lawn mower does not start, operates intermittently, or does not develop full power. There is certainly no time for work here! And as they say, you pull the starter handle more than you mow.
An increasingly viable alternative to gasoline engines, in terms of autonomy, are battery-powered power tools. She wears a backpack with a capacity of 21 Ah. Its weight is 6.3 kg, and in addition to the adapter and backpack it weighs 7.8 kg.
From electric driven machines to gardening until now in DIY we have just introduced electric ones. To partially correct this undoubted pass, we have selected some of the most commonly used tools in the garden and park with three types of power - gasoline engine, electrical network and battery with colleagues from Tashev-Galving.
Difficulties with starting arise not only for seasoned lawn mowers, but also for new ones. What to do in this situation? There is only one way out - listen to the advice of experts and take advantage of their practical experience!
You bought yourself a new gas trimmer and immediately encountered problems with it. It starts very poorly. If you mow it a little and then turn it off, then starting it “hot” is an even bigger problem than “cold”. I can’t imagine what to do with it, how to start it correctly?
The instructions for starting a lawn mower are as follows:
We start with two small chainsaws that specialize in pruning and trimming trees—an activity that takes place in the tree's crown—either by lifting the tree or on a stable platform. The requirements for these types of machines must combine maximum performance with minimum weight, compactness and transparency, less load and safety when working in various spatial situations, working with them requires minimal effort, their operation should not be distracting, the level of hand vibration should be as low as possible, to ensure comfortable and safe handling during operation.
1. Turn on the ignition.
2. Pump up fuel using a silicone button (primer) located at the bottom of the carburetor. You need to do as many clicks (or a little more) as written in the instructions, usually about 8-10.
3. Close the air damper.
4. Lock the throttle lever with the stop button at high speed.
5. Pull the starter handle 2-3 times. The engine should "catch".
The leading requirement for any machine of this type and for this purpose is to ensure the greatest possible safety for the operator. Since pruning involves cutting branches from a living tree, the cut should be as gentle as possible—smooth and smooth, with minimal damage to the wood tissue.
In view of these requirements and following the spirit of the times, it is logical to start with a battery-powered chainsaw. Either home garden and large-scale construction carpentry work in the yard or for professional work in gardens and parks, this chain Saw will always be on the high side. Or, more precisely, as much as the battery allows. The data is for the manufacturer and refers to cedar wood. This provides approximately 13 hours of operation.
If the engine “seizes” and stalls, then you need to move the air damper to the 1/2 position and try to start it again. If the engine starts, then let off the gas and move the air damper to the “open” position. Let's start work.
When performing manipulations to pump fuel, there is no need to be afraid of overfilling it. If this happens, and, as they say, “the spark plug is flooded,” then there is no need to unscrew it, just move the air damper to the “open” position and, holding full throttle, simultaneously crank the engine with the starter 2-4 times. After this, you can start the engine and start working.
The continuous operation time of the trimmer is indicated in the trimmer instructions. On average, we mow for 15-20 minutes, after which we turn off the trimmer and let it cool for 3-5 minutes. Weather conditions also affect the duration of continuous operation. In hot weather, when mowing tall grass, thickets of weeds, and under heavy load, the trimmer overheats faster.
Many problems with brush cutters occur due to an incorrectly prepared fuel mixture. In two-stroke engines, lubrication is provided by special oil (not ordinary motor oil!) mixed with gasoline. If the oil is not mixed with gasoline, the brush cutter will quickly fail. Oil/gasoline are mixed in the proportion specified in the trimmer instructions. Usually it's 1:40 or 1:50.
The question often arises: a proportion of 1:50 is how much oil and gasoline?
The numbers mean the following: fifty parts of gasoline are taken for one part of oil. Hence: divide 1000 ml (1 liter of gasoline) by 50, we get 20 ml, that is, 1:50.
This way you can calculate the composition of the fuel mixture (gasoline/oil) in any proportions. To add oil to gasoline without “eyeballing”, it is advisable to take a 20 ml medical syringe, draw oil into it and “inject” it into a container for preparing the fuel mixture.
During the engine break-in period (this is approximately the operation of the trimmer on 2-3 tanks), the amount of oil can be increased. For example, mix it with gasoline in a ratio of 30:1.
A small amount of oil mixed with gasoline leads to increased wear of the cylinder-piston group. An excess of oil in the mixture, although not so fatal, is also harmful. Coking of the piston rings, rapid formation of carbon deposits in the combustion chamber, and a drop in engine power may occur. In addition, the mesh screen of the muffler becomes coked. Therefore, some users (after the end of the warranty period for the trimmer) recommend dismantling it.
The gasoline used in the brush cutter is AI 92. The brand of gasoline is precisely stated in the operating instructions. You should not try to “boost” the engine by filling it with 95-grade gasoline. This can lead to overheating, unstable operation of the trimmer and breakdown.
It is not recommended to leave fuel in the trimmer tank during a long break in operation. It is better to end the working day having completely worked out the entire mixture. If this is not done, then, since the gasoline from the engine will evaporate overnight and a thin film of oil will remain, the carburetor jets may become clogged. This will cause difficulty the next time you start the engine.
It is also necessary to observe safety precautions when storing fuel. Many people pour gasoline into a plastic water bottle. Is it worth doing this?
Under no circumstances should gasoline be stored in plastic containers from under water. When mixing the fuel mixture, a static charge accumulates and a spark can be caught.
Therefore, gas stations do not allow filling gasoline into plastic cans, only into metal ones. Before pouring gasoline into a metal canister, it is better to place it on the ground, this will remove static from the body.
But there are situations when simple manipulations with a lawn mower do not help. The engine still won't start. In this case, we check the power and ignition system, guided by the rule “the engine does not work if there is nothing to burn or nothing to set on fire.”
The petrol trimmer loves cleanliness. It is necessary to monitor the cleanliness of the air filter and fuel. It is better to let gasoline purchased at a gas station sit for 2 days and pass it through a simple filter - a piece of flannelette fabric.
We check electrical equipment as follows:
1. Unscrew the spark plug and inspect the gap between the electrodes. You can set the correct gap between the electrodes using the “old-fashioned” method. We take a razor blade, break it in half and insert a homemade probe between the electrodes. If the blades fit tightly, then the gap is ideal.
2. Put a cap on the candle high voltage wire and lean the candle against metal surface engine. We pull the starter several times. If the spark hits one point well, then the gap is adjusted correctly. If not, the spark is weak or “wanders,” then it is necessary to re-adjust the gap between the electrodes.
Also, the ignition coil in the electrical equipment may be broken. In this case, the brush cutter does not start, or it starts and works intermittently, and then stalls, or when “hot” it does not start at all.
You can check the serviceability of the coil in the same way as when checking the spark: unscrew the spark plug and lean it against the trimmer body. If there is no spark when the starter jerks, or it appears every other time, you need to change the coil.
If everything is in order with the electrical equipment, then we check the carburetor.
Vacuum carburetors are installed on trimmers. When disassembling, cleaning or washing it, you need to be extremely careful - under no circumstances disassemble the lower part of the carburetor, where the primer is located. Air filter(it is visible if you remove the protective casing from the carburetor) needs to be washed detergents. Best for washing dishes. After drying, put it back. We wash the carburetor with clean gasoline and blow through all the holes with a pump. We also wash the fuel line filter, then dry and assemble everything. Usually, after all the manipulations, the trimmer starts working.
A thin cable instead of a fishing line, is it worth installing it on a brush cutter?
This thought comes to the mind of almost everyone who has had to mow 10 acres of overgrown tall grass. At first glance, the idea seems good. The cable is stronger than the fishing line and does not wear out as much. However, not all so simple.
If you install a cable instead of a fishing line, without the possibility of releasing it, securely fixing the two ends of the cable and cutting them off by welding (a drop of melted metal keeps the cable from unraveling). Such a tool “cuts” the grass at once. Cuts down growth about a finger thick. He is not as afraid of stones as he is of a disk. There is, however, a problem: when worn, pieces of the cable threads break off, and these twisted wires remain at the mowing site. If you step on them, you can get hurt.
But the pieces of cable left on the field are not so bad. When a fishing line breaks, it weakens the dynamic impacts on the transmission and engine; a cable does not provide such an opportunity. The result is rapid wear of the brush cutter.
Any scythe has a knife on the protective casing that cuts off the excess line after winding, and the cable cannot be cut. If part of the cable breaks off, the result is an imbalance and increased vibration. Result: the shaft drive bearings break.
You also need to remember that a piece of cable, spun by centrifugal force when the trimmer head rotates, flies like a bullet. Imagine what would happen if it hit someone in the leg or eye?
Using a cable, wire, or multi-core cable instead of fishing line leads to rapid breakdown of the trimmer. In addition, this is a direct violation of safety regulations!
Date: Thursday, 05 May 2016
