Tips for working with Champion saws
You have bought an excellent tool and to enjoy it for many years to come we would like to give you some recommendations and things to look out for.
No pre-commissioning of the engine before startup. the saw is ready for operation. During the first hours you should work with minimum loads on the motor in cyclic mode (sawing 1-1,5 min., After 10-15 seconds the lawn mower is ready for operation. idle). The engine reaches its maximum power after 8 to 10 full fills of fuel.
When preparing the fuel mixture for chain saws, use only Genuine Champion oils. The oil that can be used to prepare the fuel mixture is specified in the owner’s manual. Do not use two-stroke oils for low-speed engines (mopeds, motorcycles, snowmobiles) and water-cooled two-stroke engines. Strictly observe the required proportions of oil and gasoline, the ratio should be 1:50 (5 liters of gasoline. 100 ml of oil).
Do not use leaded gasoline, t.к. there is a risk of engine failure. The octane number of the gasoline you use should not be less than 90 and not more than 95. ready-to-use fuel mixture must not be stored for more than 1 month, because it oxidizes and becomes unsuitable for use. The use of old fuel mixture leads to engine failure.
When refueling the saw, always check that there is oil in the oil tank. Both tanks should be filled at the same time. When leaving the saw for an extended period of time, be sure to drain the fuel from the gas tank and run the engine to deplete the fuel residue in the carburetor.
Do not operate with an empty oil tank.Lack of oil leads to failure of oil pump, bar, chain.
It’s easy to check for chain lubrication while you’re working. Point the bar of a fast-rotating chain saw at a clean piece of paper. When lubrication is flowing normally, a streak of oil will be visible on the sheet. Chain lubrication should be done with special chain oil. The use of other oils is undesirable, because it can lead to failure of the oil pump, rubber hoses and seals, as well as to increased wear of the saw chain and bar.
On chain saws it is necessary to periodically lubricate the drive sprocket with a special lubricant from Champion (using a grease nipple). There is a hole in the bar at the end of the bar for this purpose. This is especially important when working with the toe of the guide bar during grooving, because the load on the sprocket bearing increases by 3-4 times.
Do not use waste oil for chain lubrication or low-viscosity oils (transformer oil, industrial oil, spindle oil), because.к. low viscosity and lack of special additives cause premature chain and bar wear.
Read the manual carefully, beginning with the sections about starting a hot or cold engine. All saws start the engine in the same way. Only the position of the controls (STOP button, choke lever) may be different.
To reduce the risk of personal injury, do not operate the engine with separate controls.
Start the cold engine: a) Turn the switch to position 1 (on); b) Pull the lever of the air damper to failure (air damper is closed completely): c) pull the starter cord handle several times until the first burst of fuel in the engine;d) slide the choke lever (air damper is open, the throttle flap of the carburetor remains ajar);e) start the engine;After starting the engine immediately press and release the gas trigger, the throttle flap lever automatically goes into operating position(normal idle mode).
Start of warm engine: a) Turn switch to position 1 (on); b) Pull choke lever to the stop and then move it to the previous position (throttle opening).c) Stop the engine by moving the switch to the position (off) of the throttle trigger; d) Stop the engine by moving the switch to the position (off) of the throttle trigger.)
ATTENTION: Each time you start the engine, be sure to allow the starter cord to run freely until the winding mechanism engages with the engine flywheel. Do not allow the starter grip to be pulled out too far, otherwise there is a risk of damaging the starter group components.
Do not forget to check the position of the overrun brake before and during each start-up. The overrun brake must be released (pull the brake lever toward the front handlebar until it clicks into place). When the inertia brake is off, the chain on the bar is pulled freely by hand (this operation may be carried out only in work gloves with the engine turned off).
Installing the bar mounting bracket.The bar is symmetrical along its longitudinal axis, and it is therefore recommended to periodically turn it upside down during use. When installing the chain, make sure the cutting edge of the tooth on top of the bar is facing forward.
ATTENTION: When mounting the bar, make sure that the chain tensioner is in the guide bar bore. there is a risk of damaging the bar mounting cover.
Proper chain tensioning.The chain lies flat on the bar at the bottom, without sagging, and extends freely to the height of the link at the top of the bar. Sagging of the chain is not permissible!
ATTENTION: When sawing with the chain loosened, the bar in the area of toe will be strongly worn, there is heavy wear of the drive sprocket, there is a significant reduction in the service life of the driven sprocket and drive sprocket bearings due to strong vibration, the chain may come off or break. It’s dangerous!
Some reasons
It often happens that the users of this kind of machines try to “save” by pouring into the tank not fuel with a regular octane number, but something incomprehensible that has stood in a plastic canister for almost a decade.
- Always clean your mower after work. Dried grass can stick firmly to it. Also, it smells bad when it starts to rot. So once you’re done mowing, clean the grass off your mower.
- Never leave your mower over the winter with gas in the tank. It can thicken during storage and clog the carburettor.
- Never run your mower without proper lubrication, unless you like to buy a new mower every time.
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Fuel mixture is key!
In this case the remainders of the plastic dissolved in the brutal environment make such awful things in the combustion chamber that you really can’t do without a total overhaul of the mechanism. Petrol self-propelled lawn mowers choice. But you’re sure to forever remember how to properly store fuel.
What to do when the fuel was exactly the same, the spark is there, but the gasoline lawn trimmer does not start? Maybe you just filled the spark plug with gasoline. In this case, you need to unscrew it, wipe it with an untampered rag and dry it. reliable electronic grass trimmers grass mowers. By the way, it would be absolutely worthwhile to check the plug itself for performance.
Common mistakes
When starting such a technical unit, some problems may arise, and to understand why the lawnmower does not start, it is necessary to identify the causes, and for further work. to eliminate them.
The main reason for trouble starting your lawn mower may lie in the fact that the fuel tank is empty or not enough gasoline to run the device. In such case it is obvious what to do. to fill up the tank with petrol, and to prevent such situation, it is necessary to check petrol availability beforehand.
Failure to comply with the rules for the preparation of fuel mixtures, as well as the use of low-quality raw materials in order to save money can also lead to errors when starting and running the lawnmower. The way out in such a situation is simple. you need to carefully choose ready-made fuel, as well as carefully observe the proportions when preparing your own mixtures.
Starting errors can occur because fuel can clog the spark plugs. This occurs because of prolonged exposure to the starter cable when the air damper is closed. To prevent this, you should always check it and, if necessary, return it to the correct position.
Naturally, in the case of starting the lawnmower with the ignition off, you may fail, because without this the unit cannot function.
So right after putting the air damper in order don’t forget to turn on the ignition, and only then you can safely start working.
Wide choice of equipment from trusted manufacturers
There is a wide range of gardening equipment in the “Buy Dacha” online store’s catalog. We deliver directly from the manufacturer, that’s why we sell lawn mowers at lower than our competitors. It’s easy to buy at our shop: you just need to choose the model you like and fill in the order form. Delivery in Moscow by courier service. 3% discount in case of self-delivery. We deliver goods to any part of the country.
Despite the difference in features and appearance of different models of devices, they still have the same causes of failure, so they are virtually the same way to fix.
The most common problem with the device is that it does not start or stops when you press the gas. Causes lie in improper carburetor or ignition operation, as well as problems with the filtration system.
If the ignition system is at fault, then proceed as follows.
- Check that you are using spark plugs that are in perfect working order and that there are no traces of fuel on them. If the spark plug is primed, it is recommended to clean it thoroughly, because otherwise the operation of the device will not be possible.
- If the threaded connection is too dry, you may have problems starting, because without lubrication with petrol the spark cannot appear or its power will be insufficient to work.
- If the ignition system is broken, you should also check the contact between the spark plug and the high-voltage wire, because if it is missing the spark will not be possible, as well as further operation.
If the device stops working in 5-10 minutes after the start of operation under load at high revolutions, the reasons may lie in the problems with the air and fuel filtration system:
- The filter may be clogged, so when it gets hot, the system stops cleaning properly and shuts down;
- the cause may also be that the part responsible for regulating the pressure in the fuel tank gets dirty and blocks the fuel supply.
There are also more serious breakdowns that can be quite difficult to deal with.
- Channels and nozzles of the device can be seriously contaminated, so there is no way to do without a capital cleaning. And in order to properly clean them, it is necessary to use professional cleaners and blow through the parts with a powerful air stream.
- Often the gaskets, which are an integral part of the system, wear out and also fail in the working system. They can not be repaired, so you just need to replace them.
- Worn pistons in service can lead to failure. This is why the parts must be monitored and replaced if necessary.
- In addition, the cause of the breakdown may be a breach of tightness in the carburetor space.
Loss of pressure can occur due to depressurisation and the device will lose its function.
Models
The most popular models for 2020 are:
- Husqvarna LB 553Se gasoline mower pro. Speed of 5 km per hour. Country of production Sweden.
- Champion LMH4412 lawn mower. Petrol engine type. Country of Origin Russia.
- BEAR CAT Echo WT190 petrol lawnmower. Fuel tank capacity 1 liter. Country of origin USA
- STIHL FS 40 Autocut C 5-2 lawnmower. Working width of 38 centimeters. Production country USA.
- McCulloch M51-150R Classic gasoline mower. Power 2 500 Watts. Brand Country USA.
The main errors during the start
Why the device does not start, it overheats? If you have such problems, it is recommended:
- Check the volume of mix in the tank.
- To choose a quality fuel at purchase.
- Prepare mixture according to recommendations, instructions.
- Change the position of the air cushions. With the choke closed and 5 jerks, fuel can pour into the spark plugs.
- Turn off the ignition when starting. Most often the ignition is turned on immediately after the air vents are closed.
How to start and run-in the 4-stroke engine properly
First, be sure to read the operating instructions provided by the manufacturer of the equipment on which the engine is installed. Study it! Many buyers do not do this and significantly reduce the motor life of their equipment.
What is the best gasoline to use?
Based on the advice of specialists from service centers for gasoline four-stroke engines, it is recommended to use gasoline with an octane number equal to 92. The use of gasoline of mark АИ95 and АИ98 because of presence in structure of “additives” is detrimental to pistons and engine valves, leading to its faster wear and accordingly to breakage. It is recommended to use “fresh” gasoline that has not been stored for more than 30-45 days.
What oil to use and how much oil to use?
Many buyers of gardening equipment have the opinion that the oil used in the car will suit perfectly for the equipment equipped with a 4-stroke single-cylinder air-cooled engine. This opinion is wrong. Car oil is designed to work in a water-cooled engine and has a lower boiling point. Specialty oils intended for lawn and garden equipment contain special additives and are designed for air-cooled engines. Most manufacturers recommend using SAE 30 API SF/CD oils.
it is very important for the customer to check the oil level in the engine crankcase. Fill the crankcase with oil in such a way that the oil level is at the last thread of the oil filler neck when the engine is in a horizontal position (fig.1). Check the oil level before each use.
Note, each particular engine installed in a machine may have a different oil volume. The necessary quantity and type of oil is usually found in the instruction manual or on the engine itself, as a reminder sticker. Basically, for engines from 4 to 7 liters.с., 0.6 l fill up the engine. of oil. Please note, if a new engine has 500-550 ml of oil in it before the first start. the oil is not a defect! The reason for this is that the engine has been oiled by the manufacturer for sale in other countries.
The first engine run is very important for its further operation. Please note that when starting an engine for the first or cold start there is a high load on the piston system! To avoid overloading, start the engine with the throttle grip in the maximum position. As soon as the engine starts, turn the throttle grip to 3/4 of the throttle and in warm weather to 1/2 of the maximum setting. Procedure.
Open the fuel supply from the gas tank to the carburetor.
Move the choke shutter to the “closed” position.
Rope starter (pull rope), designed to start the engine, should be “pumped” 3-4 times until a clear resistance rope. At this point, pump gasoline to the carburetor.
After that, with a sharp jerk to the right of yourself, make the start.
After starting, after 1 to 3 minutes, depending on the outdoor temperature, turn the choke knob to the “open” position.
Engine runs at idle rpm.
The air-cooled 4-stroke engine is the cause of a dispute among service technicians. Based on the data received from the specialists of authorized service centers, we found out that running-in only at idle speed is not acceptable. Depending on the machine manufacturer, the manual may recommend a combined running-in system.
So, after starting the engine (see “Engine Start”). “Start the engine and let it warm up for 5-7 minutes. After warming up get to work. During first 5-20 hours of engine’s “life” (depending on the type of machinery, see instructions) do not put too much load on the engine. Try to maintain a load of 50-75%.
If your rotary tiller with rotary hoe blades installed do not try to lower the machine to full depth.
An indispensable part of the operation will be the observance of the recommended time regimes, 25-30 min. work, 15-20 min rest / cool down.
After the first 5-20 hours of sparing work, change the oil in engine crankcase to a new one. Your machine is ready for operation!
The four-stroke engine is widely used in gardening and park equipment (power tillers, chainsaws, brush cutters, snow blowers, lawn tractors), road-building machinery (generators, vibratory plates).
Following the above recommendations will extend the motor life of gasoline-powered equipment many times over. Best regards, “Electromax” Ltd
Lawn mower won’t start? Eliminate the most frequent reason
Chinese brushcutter headache for the owner, but still without them there is nowhere. The main problem is that it is difficult to start after a long standstill. If the lawnmower runs like clockwork in the fall but won’t start in the spring, you’ll most likely need to take apart the carburettor and clean the valve.
Necessary tools:
If the brushcutter engine refuses to start, the first thing to do is to check the spark plug. If it is completely dry, it means that there is no fuel in the combustion chamber and the reason is in the carburetor. It’s worth checking the spark plug right away to rule it out of the cause on all fronts.
It is also possible to check if the engine itself is in good working order. To do this, unscrew the plug, you need to pour a syringe into the combustion chamber a few milliliters of gasoline. Then the spark plug is screwed in and the lawnmower starts. If there is nothing wrong with the motor, it will start for a few seconds. This once again confirms that it makes sense to disassemble the carburetor.
Then the plastic protective cap is removed along with the air filter. After that, a Phillips screwdriver unscrew the 2 screws that hold the air damper and carburetor on the engine. Immediately the fuel pipes are torn off.
At the side of the choke cap screwdriver to unscrew 4 screws and divide it into 2 halves. We’re interested in the half with the choke. On its inner side in the center there is a valve.
It often jams, because after evaporation of gasoline, there is viscous oil on it, working as glue. To check it, you need to put a short thin tube and try to blow air through it. If it is stuck, it can not blow in any direction.
Sticking of the valve can be eliminated with an ordinary match. Do not use a toothpick because it is sharp and can cause damage. Use a match to lightly press into the valve and loosen it. After cleaning it with a match, it will blow out.
The fuel will already be able to come in, so it will work. Cleaning the valve is not the answer for all brushcutters that do not start after an idle time, but it helps in about 8 out of 10 cases. The remaining 20% is usually also related to the carburetor, usually the needle.
Inspecting and lubricating the gearbox of your lawnmower
Checking the gearbox before starting the gasoline grass trimmer should be done on a regular basis. Lack of lubricant or too little lubricant increases friction in the gear train, which operates at a fairly high rpm. The result is overheating of the gears as well. The gearbox on the brushcutter fails. To prevent the occurrence of such a breakdown in the process of operation and helps regular inspection.
If you discover, before starting the gasoline grass mower, insufficient lubrication or its absence in the gearbox, “LITOL” is put into the housing. For this purpose it is necessary to unscrew the screw on a bend of the gear housing and fill with “LITOL” in quantity of 1-2 ml.
If you work with your petrol trimmer for a long time, every 8 to 10 hours you should add oil to the gearbox.
Preparation of correct fuel mixture
Before you start running in a new lawnmower engine, you must also prepare the fuel mixture correctly. As it is known for two-stroke engines it is prepared of a special two-stroke oil and petrol, taken in certain ratios. To determine the proportions, refer to the instruction manual supplied with your tool or to the lubricant label. You can also find the recommended fuel type and recommended engine oil type in the manual.
Prepare fuel in small quantities, enough for one mowing. Use special plastic canisters for fuel, or separate glass or metal utensils. It is best to apply oil with a hypodermic syringe.
When getting ready to run in a new lawnmower, many are faced with a problem in the preparation of the fuel mixture. There is a discrepancy in the tool manufacturer’s manual and in the engine oil manufacturer’s manual. The first ones recommend the ratio 1:25. The second recommends 1:50. Who to Believe? What to do?
According to experts, if the manufacturers write the proportion 1:25 or 1:30 in the instructions to the brushcutter, it’s most likely a cheap tool with poor cooling, or the manufacturer doesn’t know what kind of oil the consumer will add. But here it is necessary to understand that the excess of lubricant is not the best way to affect the performance of grass trimmer. Excess oil does not burn out completely when the engine is running. It cokes, it clogs up the cylinder and the piston.
What to do in this situation when running in a new tool? The ideal is to buy the oil that the mower manufacturer recommends. In the case of running-in engines, when there is no possibility to buy the recommended oil, it is better to get a good Husqvarna two-stroke oil for the gasoline-powered tools of the same name. It is not cheap, but it lasts long. Mix it in the way the instructions on the jar say.
Remember, it is best to use the proportion that the oil manufacturer gives. But whether the proportion that is written on the mower is suitable, it is better to find out by experiment. If at the proportion recommended by the manufacturer of the grass trimmer the engine is snotting oil and you can see leakages on it, then the proportion needs to be increased.
Hand-held petrol mowers: weight and handle type
Sometimes the buyer is mistaken in thinking that there is no need to consider the weight and type of handle when choosing a machine. This is a misconception. After all, the weight will depend on the uninterrupted operation time of the operator. The heavier the unit, the less time you work.
As a rule, powerful grass trimmers can weigh between six and ten pounds. If you decide to choose just such a unit, then you need to closely examine its equipment. These models always have shoulder straps, which greatly facilitate the work.
When reviewing the models, pay attention to the type of handle. After all, working with a trimmer, you have to hold it firmly and confidently. Most hand-held petrol trimmers have a T-handle, it’s convenient and practical.
Does the lawnmower need a running-in period?? Manual gasoline trimmer for grass and its repair
The answer to the question whether and how to run-in the trimmer for grass, the answer: run-in is not necessary. The grass trimmer is ready to work right from the start. It is only necessary to follow the proportions when preparing the fuel mixture, and for the timely lubrication of the gearbox with your own hands. Following all the instructions of the manufacturer, you will be able to use the purchased trimmer for a long time.
In the case that the unit is out of order, then to make repairs at service centers, which guarantee the installation of only original spare parts.