No Sparks On A Petrol Trimmer
The summer season has come, and petrol scythes have habitually rattled out on personal plots. Great tool, powerful and mobile. With the help of a gasoline trimmer, you can also cut the grass and get rid of dried weeds. However, there are cases that the lawn mowing does not start, works intermittently or without developing full power. There is certainly no time for work! And as the saying goes, better dorgaesh starter handle than mow.
Difficulties with launching arise not only in experienced lawn mowers, but also in new ones. How to be in this situation? There is only one way out. To heed the advice of experts and take advantage of their practical experience!
You bought yourself a new gas trimmer and you immediately got into trouble. Very bad start. If you mow a little and then turn it off, then turning it “on hot” is an even bigger problem than “on cold”. What to do with it, I won’t know how to start it right?
The instructions for the lawn mowing plant are as follows:
1. Turn on the ignition.
2. Pump fuel with a silicone button (primer) located at the bottom of the carburetor. It is necessary to do as many clicks (or a little more) as written in the instructions, usually about 8-10.
3. Close the choke.
4. Secure the throttle lever with the stop button at higher speeds.
5. Pull the starter handle 2-3 times. The engine should “grab.”
If the engine “grabbed” and stalled, then you need to put the choke in position 1/2 and try to start again. If the engine starts, then we dump the gas and put the air damper in the “open” position. Getting started.
Performing fuel pumping manipulations, one should not be afraid to overfill it. If this happens, and, as they say, “poured candle,” that it is not necessary to unscrew it, it is sufficient to transfer the choke in the “open” position and hold full throttle, at the same time to scroll through the engine starter 2-4 times. After that, you can start the engine and get to work.
The time of continuous operation of the brushcutter is indicated in the trimmer instructions. On average, we mow for 15-20 minutes, after which we muffle the trimmer and let it cool for 3-5 minutes. Also, the duration of continuous operation is exerted by weather conditions. In hot weather, when mowing tall grass, weeds, under heavy load, the trimmer overheats faster.
Many lawn mowing problems arise from improperly prepared fuel mix. In two-stroke engines, lubrication is done with special oil (not ordinary motor oil!) Mixed with gasoline. If the oil is not mixed with gasoline, then the lawn mower will quickly fail. Oil / gasoline is mixed in the proportion indicated in the trimmer instructions. This is usually 1:40 or 1:50.
The question often arises: the proportion of 1:50 is how much oil and gasoline?
The numbers mean the following: fifty parts of gasoline are taken per part of the oil. Hence: 1000 ml (1 liter of gasoline) is divided by 50, we get 20 ml, i.E. 1:50.
Thus, the composition of the fuel mixture (gasoline / oil) in any proportions can be calculated. To add oil to gasoline not “by eye”, it is advisable to take a 20 ml medical syringe, draw oil into it and “inject” into the tank to prepare the fuel mixture.
For the period of engine break-in (this is approximately the work 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 piston-cylinder group. An excess of oil in the mixture, although not so fatal, but also harmful. Coking of the piston rings, rapid formation of soot in the combustion chamber, and a drop in engine power can occur. In addition, the coke screen of the muffler is coked. Therefore, some users (after the end of the warranty period for the trimmer) recommend dismantling it.
The gasoline used in the lawn mowing machine is AI 92. The brand of gasoline is precisely prescribed in the operating instructions. Do not try to “force” the engine by pouring 95th gasoline into it. This can lead to overheating, unstable operation of the trimmer and breakage.
It is not recommended to leave fuel in the trimmer tank during a long break in work. It is better to finish the working day, having fully worked out the whole mixture. If this is not done, then, because during the night the gas from the engine will evaporate and a thin film of oil will remain, the carburetor jets may become clogged. This will cause difficulties the next time you start the engine.
It is also necessary to observe safety precautions when storing fuel. Many pour gasoline into a plastic water bottle. Is it worth it?
In no case should gasoline be stored in plastic containers from under water. When mixing the fuel mixture, a static charge builds up, you can catch a spark.
Therefore, at gas stations they are not allowed to refuel gasoline in plastic cans, only in metal ones. Before pouring gasoline into a metal canister, it is better to put it on the ground, so the static is removed from the body.
But there are situations when simple manipulations with the lawn mowing do not help. The engine still does not start. In this case, we check the power supply and ignition system, guided by the rule “the engine does not work if there is nothing to burn or nothing to set on fire.”
Gas trimmer loves cleanliness. It is necessary to monitor the cleanliness of the air filter and fuel. It is better to stand for gasoline purchased at a gas station for 2 days and pass it through the simplest filter. A piece of bike stuff.
We check the electrical equipment as follows:
1. Unscrew the candle, inspect the gap between the electrodes. We set the correct gap between the electrodes in the “grandfather” way. We take a razor blade, scrap it in half and insert a makeshift probe between the electrodes. If the blades fit tightly, then the gap is ideal.
2. We put a cap of a high-voltage wire on the candle and lean the candle against the metal surface of the engine. We pull the starter several times. If the spark strikes well at one point, then the gap is adjusted correctly. If not, the spark is weak or “wandering”, then it is necessary to re-adjust the gap between the electrodes.
Also in electrical equipment, an ignition coil may be punched. In this case, the lawn mowing does not start or starts up and works intermittently, and then stalls, or does not start up to “hot” at all.
You can check the serviceability of the coil in the same way as when checking the spark: we unscrew the candle, lean it against the body of the trimmer. If there is no spark when the starter is jerked, or it appears every other time, the coil must be changed.
If everything is in order with the electrical equipment, then we check the carburetor.
Vacuum carburetors are placed on trimmers. When disassembling, cleaning or rinsing, you must be extremely careful. In no case do not disassemble the lower part of the carburetor, where the primer is located. The air filter (it is visible if the protective cover is removed from the carburetor) must be washed with detergents. Best for washing dishes. After drying, put back. We wash the carburetor with clean gasoline and purge all the holes with a pump. We also rinse the gas line filter, then dry and assemble everything. Usually, after all the manipulations, the trimmer starts to work.
Thin cable instead of fishing line, is it worth it to put on a lawn mowing ground?
This idea comes to the mind of almost everyone who had to mow 10 acres overgrown with tall grass. At first glance, the idea seems good. The cable is stronger than the fishing line, it does not wear out so much. However, not all so simple.
If you put the cable in place of the 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 molten metal keeps the cable from blooming). Such a tool “knocks” grass at a time. Cutting off the shoot to about a finger thick. Stones are not as afraid as a disc. There is a truth, a problem: pieces of wire rope break off during wear, and these twisted wires remain in place of mowing. If you step on them, you can get hurt.
But the pieces of cable left on the field are half the trouble. The fishing line, breaking off, weakens dynamic impacts on the transmission and engine, the cable does not give such an opportunity. The result is a quick wear of the lawn mowers.
Any braid has a knife on the protective cover that cuts off excess fishing line after winding, and the cable can no longer be cut. If part of the cable breaks off, then as a result there is an imbalance, increased vibration. Bottom line: the shaft drive bearings are broken.
You also need to remember that a piece of cable unwound by centrifugal force during rotation of the trimmer head flies like a bullet. Imagine what will happen if he gets in the leg or someone in the eye?
The use of a cable, wire, multicore cable instead of fishing line leads to a quick breakdown of the trimmer. In addition, this is a direct violation of safety precautions!
Experienced users recommend buying a fishing line with an asterisk profile. Compared to a round one, it mows much better; stems with a finger thickness of a fishing line with a diameter of 3 mm cut into a light, and less is consumed.