The trimmer does not start. Why? Why does a gasoline trimmer stall? A gasoline trimmer starts and stalls.

IN Lately petrol trimmer acquired the status of one of the main tools in the arsenal of summer residents. And this is not surprising, because a motorized scythe allows you to quickly put your garden plot in order. However, sometimes it happens that the trimmer is even cold. In such situations, you have to independently determine the cause of the malfunction. Let's find out what to do if the trimmer won't start. The reasons that most often lead to such troubles will be discussed below.

Troubleshooting strategy

Where to start diagnosing faults if the trimmer does not start? In situations where the tool stalls immediately after starting, it is worth inspecting the following components of the unit:

• fuel tank;
• spark plug;
• fuel and air filter;
• exhaust channel;
• breather.

It is the breakdown of the above locations that most often leads to the fact that the trimmer does not start well. Let's look at how to eliminate such troubles.

Checking the fuel mixture

Let's say your trimmer won't start. In this case, the first thing you need to do is check whether there is enough fuel in the tank, and also evaluate the quality of the fuel mixture. It is necessary to refuel a motorized unit exclusively with high-quality gasoline. It is recommended to use fuel of a grade not lower than AI-95. Refilling the trimmer with fuel of unknown origin, purchased not at a gas station, is fraught with frequent malfunctions of the tool. This may cause damage to the cylinder-piston system. Repairs in this case often exceed the cost of the device itself.

Why won't my petrol trimmer start? This can also be caused by improper preparation of the fuel mixture, which consists of oil and gasoline. The proportions in which these components are combined are indicated by the manufacturers in the trimmer's instruction manual. Prepare fuel mixture It is highly not recommended in large quantities, that is, for the future. After all, with long-term conservation, a loss of the defining properties of the substance occurs. Therefore, if the trimmer does not start, you should drain the old fuel and use a freshly prepared fuel mixture.

Diagnostics of the candle channel

What to do if the fuel mixture used is in in perfect order, but still the reasons for the failure of the mechanism may lie in excessive moisture in the spark plug channel. To diagnose and fix the problem, you must do the following:

1. Unscrew the spark plug. Wipe it thoroughly and then dry it.
2. Drain excess fuel in the chamber through the appropriate spark plug hole.
3. Clean the old spark plug if there is carbon deposits on its surface. Using a regular ladies' nail file or a needle file will allow you to cope with the task.
4. When installing the element in place, set a gap of 1 mm. To check the parameter, just place any coin in the gap.
5. Reassemble the functional block.
6. Try to start the trimmer.

It is recommended to dry the spark plug channel for at least half an hour. However, in no case should you resort to calcining its elements. After all, heating the spark plug can lead to its final damage. What to do if the functional unit was serviced in accordance with the above recommendations, but the trimmer does not start, is there a spark? In this case, it is worth treating with gasoline threaded connection. The latter does not need to be heavily soaked in fuel. It should be only slightly moistened. Such actions should be taken to ensure ignition. After all, no matter how strong a spark the candle gives, in a completely dry chamber there will simply be nothing to ignite.

Even if in this case the trimmer does not start, it is worth assessing the quality of the contact between the high-voltage wire and the spark plug. If there is no spark (even if there is a reliable connection between these elements), most likely the problem is caused by a breakdown of the ignition unit. In this situation, you will have to turn to the services of specialists who will reinstall the unit.

Checking filters

Another common reason why the trimmer will not start is if there is a clog in the filter area. To confirm your guess, it is enough to dismantle the indicated block and try to start the unit without it. If the trimmer engine starts, you will most likely have to replace it air filter or at least thoroughly blow out the old one. If there is heavy contamination on the surface of the filter element, it is necessary to use a new mesh. When resorting to such actions, you should not leave the suction pipe completely without a filter. After all, the rush in in this case may lead to the need to repair the entire piston group of the unit engine.

Cleaning the breather

Often, the engine of branded trimmer models stalls as a result of a clogged breather. The main task of this component is to equalize the pressure in the fuel tank. If the unit becomes dirty, a vacuum is formed here, which significantly complicates the supply of fuel. The problem can be resolved by cleaning the breather using a regular sewing needle.

Exhaust channel diagnostics

The stable operation of the trimmer may be impaired as a result of a build-up of dirt in the exhaust channel or the formation of a blockage on the muffler mesh. This problem most often arises during the operation of older generation trimmer models. The issue is resolved by dismantling the anti-spark mesh and cleaning it.

How to prevent sudden breakdowns during operation of the trimmer?

To ensure that the unit is always in functional condition, you should follow a few simple rules:

1. Conduct timely, regular technical inspection of the main mechanical components of the device.
2. Refill the trimmer exclusively with fresh fuel, the quality and origin of which is beyond doubt.
3. After each use of the tool, check whether oxides and carbon deposits have formed on the surface of the ignition system elements.
4. Avoid heavy load on the trimmer during work.

In order for the unit to remain in working order, it is necessary to properly prepare it for storage in winter period. First of all, you should completely disassemble the tool, and then rinse and clean the components. It is also important to inspect function blocks for damage, if necessary, eliminating deformations of parts, all kinds of distortions, and tears in materials.

When storing the trimmer, it is worth filling the gearbox with a sufficient amount of oil. Then you need to clean the air filter, partially disassemble, blow out and wash the engine of the unit. After drying all the mechanisms, you should lubricate the moving elements. To treat the piston system with oils, you must first remove the spark plug. Then you need to move the piston to the extreme position, then pour a small amount of oil into the spark plug hole and scroll the crankshaft. If you plan to store the gasoline trimmer outside of the house during the off-season, it is recommended to tightly wrap the engine of the unit with an oily rag. This will prevent the development of corrosion on the surface. important nodes mechanism.

Finally

As you can see, there are a number of reasons why a gasoline trimmer may not start. However, if you take the task seriously, the malfunctions indicated in the material can be easily eliminated with your own hands. You should only seek help from specialists in case of critical breakdowns. At the end of the day, you should always weigh the cost self-repair with prices for servicing the unit in the workshop.

To the owner summer cottage You can’t do without a lawn mower or. But during its operation, situations may arise when this unit for some reason stops starting. And there can be many reasons for this. Let's find out why a gasoline trimmer won't start.

Why the trimmer won't start - reasons

To determine why a gasoline trimmer has difficulty starting or constantly stalls, you need to consistently check the operation of all the main components of the unit. It is especially important to do this after long-term storage of the lawn mower. So, the main reasons for this behavior of the trimmer are as follows:

1. The culprit that the lawn mower does not start may be a poor-quality oil-gasoline fuel mixture. It must be prepared strictly according to the instructions. Saving here is not at all appropriate, since it can lead to failure of the entire piston group of the trimmer. You should not prepare too much fuel mixture, as excess gasoline will lose its quality over time.
2. You should know that gasoline trimmers of brands such as Stihl, Husgvarna and some others will not start if they are filled with cheap gasoline with a low octane number. Therefore, for such units it is necessary to use only high-quality high-octane fuel.
3. If the trimmer stalls immediately upon startup, then it may have a flooded spark plug. In this case, you need to unscrew it and dry it thoroughly for half an hour. Then drain the excess fuel that is in the chamber, clean the spark plug from carbon deposits, put it in place and try to start the lawn mower.
4. If your new gas trimmer won't start, it may be due to a lack of spark. This happens because the socket where the spark plug is located is dry and the fuel does not ignite. Lightly moisten the threaded connection of the spark plug with a few drops of gasoline.
5. A gasoline trimmer may stall due to clogged air or fuel filters. It is best to replace such elements with new ones.
6. The exhaust duct and breather can also become clogged. By cleaning these trimmer elements, you can start the unit without any problems.
7. Another reason why a gasoline trimmer does not start, even when there is a spark, may be a clogged carburetor. To clean the channels and jets, you need to blow them out compressed air using a compressor. You can use a special flush to clean the carburetor.
8. If the carburetor gaskets are worn out, they need to be replaced. And if the tightness of this device is broken, you will have to identify the faulty carburetor part and replace it.
9. The trimmer may not start due to wear on the piston group. However, it is better to change such parts of the lawn mower in service center.

Those who have lawns on personal plot, they know that a trimmer is quite useful thing, which will help you quickly and efficiently tidy up or clear weeds from a heavily overgrown area. And, like any mechanism, it also often fails due to various breakdowns. One of the most common complaints from device owners is that the trimmer stalls when pressing the gas. We propose to understand the main reasons for this phenomenon and identify ways to solve the problem.

Why does the trimmer stall when you press the gas?

1. Unfortunately, a situation in which the engine stalls when you press the trimmer gas can occur in many cases. Most often, the “culprit” of the problem is the carburetor. This is the most common reason why the trimmer stalls. As a rule, troubles occur when the carburetor is misadjusted, which is possible after long-term storage, after operation in unfavorable conditions, heavy loads on the engine. It is easy to recognize the “fault” of the carburetor by the appearance of vibrating movements of the trimmer. If you have experience repairing a car carburetor, it makes sense to try to repair it yourself using the owner's manual. Although it is much safer to give the part for repair to professionals at a service center.
2. Another reason why the trimmer stalls when you give gas may be a clog in the fuel valve, which interferes with the normal fuel supply. It is easy to solve the problem by loosening the valves, after which normal delivery of gasoline to the carburetor is possible.
3. If a similar problem arises, you should pay attention to check valve- breather Located in the gas tank, the check valve prevents a vacuum from forming in the tank. If the breather is contaminated, air does not flow, as a result of which the fuel supply stops.
4. Often, without gaining momentum, the trimmer stalls under heavy load. This happens if the cable located in the carburetor is weakened and hanging down. It also happens that an over-tensioned fuel intake hose stretches greatly under load, cracks and eventually bursts. If such a problem occurs, you will have to replace this component.

As you can see, there are many reasons why the trimmer may stall when you press the gas. That is why it is important to monitor the condition of your assistant and timely check the condition of all mechanism systems.

Before you figure out why any of the tools of a gardener or a professional working with a lawn mower stall, it is worth distinguishing between two main situations when this happens. The first is when the tool does not start after you have just made the purchase, and the second is when it is in operation. So, let's look at both.

1. After launch. The lawn mower stalls if the carburetor is configured incorrectly or is misaligned. Fuel is supplied unevenly, and accordingly, distinct vibrations occur.
2. When heated. A situation when the mechanism starts up and works, but gradually “chokes” and stalls while driving - when gasoline boils in the carburetor, or the damper in the carburetor is not a disk type, but a rotary one. In such cases, it is better to replace the carburetor itself. There is an option for air leaks - when the coil or wire in the ignition is broken.
3. At high speeds. This also occurs from a misaligned carburetor or a clogged cap on the gas tank. It is worth trying to work with the valve slightly open. Be sure to check the fuel intake hose - it may be cracked or poorly attached to the base.
4. Not gaining momentum. The main reason why the engine does not pick up speed is a clogged air filter. It is possible that the cable in the carburetor may fall off, the carburetor may break down, and problems may arise with the mechanics of the engine drive.

There are times when a mechanism part requires mandatory replacement, so we are always happy to offer. It is important to understand that sometimes saving on minor elements can lead to the breakdown of such global components as a carburetor or engine. Therefore, proper operation and timely replacement of the necessary particles will provide you with full-fledged work with pleasure.

The lawn mower stalls when you press the gas, how to fix the problem

Reasons why the brush cutter stalls– there can be a huge number, we offer the most common of them, and we hope that you will find yours and, of course, eliminate it. So, one of the situations is a clogged air damper, the hole behind which fuel is sprayed. If something gets into it, it can most often be quickly and easily removed. This is the simplest reason, just like a clogged filter. It needs to be washed in a solvent and then blown well with compressed air. If it cannot be repaired, then order a new one in spare parts from the KosiKosa store.

Likewise, when you press the gas, the tool stalls because the drive is clogged. The following option is also possible: fuel is not supplied in full, so you need to check or replace the fuel filter. To others possible reasons If a brush cutter stalls when you give it gas, it is worth attributing:

1. The crankshaft seals suck in air;
2. The spacer that is located between the carburetor and the cylinder in a “problematic” situation;

To all these reasons why the mechanism stalls when gas is added, we will add a few useful recommendations on handling a brush cutter. First of all, before starting to work with any equipment, you need to read the instructions. In this case important role The consistency of gasoline and oil plays a role, it is properly prepared by you, and also do not overheat the unit, and do not leave gasoline for the winter when you simply will not use the car.

IN full-time work For any instrument, the coordinated work of all its components plays an important role. And if in one it is, then in the other it is a piston or a carburetor. Owners of brush cutters who wish to full power When using your own tool, you need to understand that under a load for which the machine’s capabilities are not designed, the entire mechanism or its individual parts may simply break. Therefore, only competent and moderate use assumes long-term effective operation of any gas-powered tool.

The trimmer stalls at idle - causes and solutions

To common situations, why trimmer stalls or brushcutter, it is worth considering its operation at idle speed. Let's get straight to the reasons:

• heating of the gearbox and a decrease in speed on the drum as a result of the fact that the gasoline solution is not prepared quite correctly. The required proportion is 1:4;
• carburetor contamination;
• the throttle valve is clogged;
• when the damper is opened (if such an experiment was carried out), the air flow makes the mixture “lean”;
• carburetor adjustment;
• air filter clogged;

An insufficient amount of fuel, which is needed for the operation of a gas-powered tool, will lead to a situation where at high speeds, when increasing, the trimmer works, but stalls at idle. In a situation with a carburetor, the device will stall on a cold start and on a hot start. For any user of a lawn mower - professional or amateur - it is important to understand that any problem with the tool may depend on a minor part coming off, a fastener coming off or clogging, as well as a global breakdown of an important part of the mechanism.

Trimmer malfunction:
The edges on the trimmer drive shaft licked (I had to buy a new shaft).

“Licked” because the shaft splines at the top are not engaged over their entire length (it happens that the shaft only engages a few millimeters at the end). At the bottom, the shaft enters the gearbox its entire length under its own weight.

At the first time The trimmer must be checked and made so that the shaft fits into the clutch at the top for the entire length of the splines (or edges, if they are square). To do this, try to put the gearbox higher on the pipe, having first loosened its fastening, or try to push the pipe deeper into the shock absorber, having first loosened its fastening. If the shaft splines still do not fit the entire length into the clutch, then you need to shorten the pipe (cut off a part) to the length necessary for the splines to fully fit into the clutch.

Warning: Just don’t overdo it with cutting the pipe (it’s better to cut off a smaller piece), because if the shaft turns out to be longer and needs to be cut, then when the shaft splines heat up, the metal will release, i.e. the hardened metal will become soft and will not last long (the shaft itself is made of alloy steel).

P.S. If the shaft has already been “licked”, then simply turn it over - install the shaft with the top splines down into the gearbox and do what is described in Do-it-yourself trimmer repair.

Trimmer repair: how to stop lubricant leaking from the gearbox

Trimmer malfunction:
Where does the lubricant go from the trimmer gearbox (Chinese trimmer, instead of a plug, a grease fitting and a syringe were screwed into the gearbox).

Cause of trimmer malfunction:
Solid oil under pressure pressed through the sealed bearings of the gearbox. During operation, liquid hot lubricant, driven by rapidly rotating bevel gears (in a small volume of the gearbox housing), “flies out” either into the driver cartridge if the sealed bearing rings on the driven shaft are pressed, or upward into the pipe body if the sealed bearing rings on the drive shaft are pressed gearbox

Replace the bearings (or the entire gearbox) at a service center and then use a special lubricant for the trimmer gearbox (for example, Husqvarna).

Advice: Chinese lawn mowers have a small hole for adding lubricant to the gearbox, so it would be more convenient to take the lubricant from the branded tube into a medical syringe (without a needle), and then add lubricant from it to the gearbox.

Repair of trimmer Husqvarna 333R

Husqvarna 333R for 3.5 seasons of active commercial operation (required replacement):

Note: I read somewhere that the time between failures of two-stroke engines is no more than 500 hours, and in 3.5 seasons I burned ~370 liters of gasoline, i.e. if 0.35 l. per hour, then the operating time is already more than 1000 hours! The Husqvarna 333R trimmer is a very reliable trimmer (petrol mower).

Note: Please write in the comments what you think about this trimmer repair.

Petrol trimmer repair: how to replace gearbox bearings

Trimmer malfunction: Tell me how to disassemble the gearbox on the trimmer to replace the bearing (Husqvarna). And does he even understand?

Answer: The gearbox of the Husqvarna lawn mower can be disassembled to change spare parts such as bearings, bevel gears, housing (since the gearbox is assembled for Husqvarna trimmer costs about $150.)
You need to remove it by loosening the tightening bolts at the bottom, be sure to wash it (for example, with gasoline), then use round nose pliers to bring the ends of the locking spacer ring together (there are two of them on the gearbox) and pull out the bearings with a small puller. They should go easily, since the upper bearing is no longer pulled together by the housing, and the drive shaft of the Husqvarna trimmer comes out of the lower one.

Trimmer repair: how to restore the thread in the spark plug hole of the cylinder

Trimmer malfunction: The spark plug is very difficult to screw in.

Cause of malfunction: The thread in the spark plug hole of the cylinder is damaged due to the fact that the spark plug did not follow the thread when screwing it into the cylinder, or sand got on the threaded part of the spark plug, or the thread was torn off by a large force on the key.

If the spark plug is not screwed in deeply, then you can drive the threads in the cylinder with a tap of the appropriate size, then screw in a new spark plug and tighten it with a force of 32-33 N*m. If the spark plug does not turn, then everything is fine, but the next time you turn the spark plug out, you need to be especially careful. If the spark plug turns, you will have to install a bushing (repair sleeve). To do this, it is better to contact a repair shop for chainsaws and gasoline trimmers. There is necessary tool and qualified personnel to select and purchase (or manufacture) a spark plug repair bushing suitable for your spark plug, then properly disassemble the engine, drill the spark plug hole to the exact required diameter, and cut the appropriate threads in the cylinder. Then rinse everything and blow off any chips, screw the spark plug into the bushing, apply thread sealant to the threads of the bushing or cold welding, screw the spark plug together with the bushing into the prepared hole, dry it, assemble everything, start it and adjust it. Another option is to replace the engine cylinder. Repairing a lawn mower yourself is similar to repairing a trimmer.

Advice: The main thing when installing a spark plug is that you first need to tighten the spark plug a few turns BY HAND, and then take the key. If the spark plug comes out easily by hand, it means it is installed correctly and can be tightened with a tool (a spark plug wrench with a knob). If the spark plug does not want to be twisted by hand, you should not tighten it with force with a wrench, since the spark plug has gone the wrong way and the threads in the spark plug hole of the cylinder will inevitably be damaged and an expensive repair of the trimmer engine will be needed.

Repairing a lawn mower: how to cut and change the gasket under the carburetor

Trimmer malfunction: A cold trimmer engine with a closed carburetor air damper starts almost normally, runs at high idle speeds, when the engine heats up, unstable operation is observed, after which the trimmer engine abruptly stalls. The malfunction of a lawn mower is the same as that of a trimmer.

Cause of malfunction: Air leakage under the trimmer carburetor gasket due to loose carburetor mounting or frequent removal/installation of the carburetor.

Make a new trimmer carburetor gasket from thin paronite (up to 0.8 mm thick) or thick cardboard. How to make a carburetor gasket: cut out a piece of thin paronite or thick cardboard a little larger than the future finished gasket, spread seat on the cylinder or carburetor with oil or grease, carefully apply the prepared piece for the gasket so that a clear imprint of the grease remains on it (the outline of the future gasket). Then cut out the middle with a small sharp narrow chisel on a heavy metal lining (for example, an anvil), cut out the holes with a special head from a set of suitable diameter, and cut the outer part with scissors. As an option, apply paronite or cardboard to the cylinder seat, just do not move it, tap the edges with a mallet, and knock out the holes with a ball from the bearing, but there is a risk of damaging the edges. The first option is how to make the carburetor gasket better. That's it, the trimmer carburetor gasket is ready. Repairing a lawn mower with your own hands in this case is similar to repairing a trimmer.

Trimmer repair: how to replace gears and bearings in the trimmer gearbox

Trimmer malfunction: Trimmer gearbox - hum, grinding, squeaking and other noises in the lower part of the trimmer, jamming when turning and the driven shaft is loose. The malfunction of a lawn mower is the same as that of a trimmer.

Cause of malfunction: The trimmer gearbox bearings have failed due to overheating of the gearbox, lack of lubrication in the gearbox housing, impact of the trimmer knife on a stationary object, and long-term (many years) active use.

Replacing the bearings in the trimmer gearbox yourself (you need keys to remove the gearbox; pliers to remove the retaining rings and disassemble the gearbox; gasoline to wash all the insides to troubleshoot the parts; new trimmer gearbox bearings for replacement) or replace the gearbox bearings in a workshop. If only one trimmer gearbox bearing is destroyed, both bearings still need to be replaced. Or, as an option, replacing the trimmer gearbox assembly - select the gearbox to match the diameter of the pipe onto which it will be clamped and along the splines of the drive shaft (square, star, hex). Repairing a lawn mower yourself is similar to repairing a trimmer.
PS: After replacing the bearings in the trimmer gearbox or replacing the gearbox assembly, do not forget to fill the gearbox housing with lubricant (need good lubrication, for example Husqvarna) through a special hole in the gearbox housing from a tube of lubricant or from a syringe (without a needle) if the filling hole is very small.

Repairing a lawn mower: how to restore functionality to a broken starter spring

Trimmer malfunction: When trying to start the engine, the trimmer starter cord stopped returning to the starter housing. The malfunction of a lawn mower is the same as that of a trimmer.

Cause of malfunction: The end of the spring in the trimmer starter jumped out and the pulley jammed.

Disassemble the starter, drill a hole where there is a recess to fix the end of the spring, thread a wire, insert the spring, lay one turn, tie the wire thus fixing the spring end that has jumped out, lay all the turns of the spring, bend the end of the spring inward to engage with the groove on the other part. Then place the washer, spring, part with two antennae, tighten the central screw, insert the cord through the hole, tie a washer at the end to secure the end of the cord, lay the cord, check the operation of the starter and the return of the cord to the trimmer starter housing. Repairing a lawn mower yourself is similar to repairing a trimmer.

Trimmer maintenance using the Husqvarna 333R as an example to prevent trimmer repairs

THAT. We use trimmers (gasoline mowers) to:

• in the heat and under any load, the trimmer engine did not overheat;
• ensure precise adjustment of the carburetor and, accordingly, optimal performance brush cutter engine;
• identify possible defects, fuel leaks and other malfunctions in order to avoid trimmer repair;
• promptly change the spark plug, unreliable bolts, gaskets and other consumables;
• so that the trimmer (mower) has a good appearance;
• so as not to take the trimmer to a service center.

THAT. We carry out the Husqvarna trimmer after rolling out every 40 - 60 liters. gasoline

(depending on heat, dust and severity of work).

Servicing the trimmer air filter

I wash the air filter after the engine is rolled out every 20 liters of gasoline and before repairing the trimmer or servicing the trimmer.

To service the air filter you need to: remove the foam element of the air filter and wash it with soap and water in a clean and warm water, squeeze and dry (or replace if the foam filter element is old or damaged).

Note: The air filter can be “washed” more often to prevent a drop in power, increased fuel consumption, starting difficulties, and unnecessary wear and tear on the lawnmower engine.

Note: If you adjust the trimmer carburetor with a dirty air filter, then after cleaning the air filter, more air will enter the engine and the fuel mixture will become much leaner, which will lead to bad work or even engine breakdown and, as a result, trimmer repair.

Preparing for trimmer maintenance and repair

• provide (purchase and dilute) the usual fuel mixture for the operation of your trimmer (for example, A-95 “Mustang” gasoline from a WOG gas station and Husqvarna two-stroke oil, in a ratio of 1:50) and leave 1.5 liters of clean (without oil) gasoline for washing engine parts;
• buy a new spark plug: only Champion RCJ6Y - according to the manufacturer's instructions Husqvarna;
• prepare water-washing supplies for T.O. and trimmer repair (~7);
• prepare petrol-washing supplies (~5);
• buy the necessary Husqvarna bolts and screws to repair the brush cutter (new fasteners);
• prepare thin paronite for the gasket under the carburetor of the trimmer, round fishing line 2.7-3 mm, gear lubricant, clamps, fuel filter;
• Ensure good lighting, cleanliness and workplace for repair of the trimmer (baking tray for laying out parts and spare parts, stand for the motor, lining for keys and tools);
• ensure personal performance (if necessary);
• allocate one free day specifically for maintenance and repair of the trimmer (petrol mower).

Beginning trimmer maintenance and repair

1. Add grease to the trimmer gearbox. Remove the metal blade or trimmer head and clean the driver cartridge inside of any grease and soil.
2. Wash warm water and brush everything on the steering wheel, everything on the bar and both protections (the protections of lawn mowers, as a rule, become heavily “overgrown” with a dried mixture of soil and grass juice, so plastic protection It is advisable to clean it with a metal brush, and then washing powder and a brush. Rinse and dry everything.
3. Inspect everything on the trimmer for cracks, bends, abrasions, distortions, tears (especially metal blades at the base of the teeth and at the holes and both protections). Reliably eliminate all faults identified on the brush cutter. Remember! – the thickness of the metal is calculated on a computer, therefore fasteners must be tightened only in a service center using a special fastener tightening card with a torque wrench. If you do the tightening of the fasteners yourself, then do not overtighten! Because when the gearbox (for example, a gearbox) is heated up strongly in the heat with a heavy load, the metal expands, and there is little thickness reserve and the housing may burst (crack).
4. Install a trimmer head (T-35) with a cord of 2.7 mm or 3 mm of standard length (up to the cutting knife in additional protection) to load the engine to adjust the high speed needle, that is, the left carburetor trim screw.
5. Rinse and drain the fuel from the tank into a bottle.

Disassembling the Husqvarna 333R trimmer (procedure for disassembling the engine for maintenance and trimmer repair

1. Remove muffler cover- one bolt.

2. Turn the trimmer over on the table and remove metal pan(three screws).

3. Remove block starter(this is the air intake of the trimmer engine cooling system) - three screws and two rubber bands!

4. Unfasten the air filter cover and remove cylinder cover(it directs cold air to the cylinder) - one bolt.

5. Unscrew the three bolts in air filter housing(one short and two long).

6. Carefully disconnect throttle cable from the carburetor.

7. Inspect so far everything is dirty - the carburetor on the trimmer and its gaskets, hoses, tank, plug for fuel leakage (cracking and leaks).

8. Remove fuel tank with two hoses (disconnected very carefully with a screwdriver) and four support rubber bands (do not lose them).

9. Remove carburetor Zama C1Q complete with air filter housing and gasket.

10. Use a screwdriver to remove choke button(you need to make a mark there for subsequent installation).

11. Turn the carburetor on the trimmer, remove it from the air damper rod on the body and then from the other rod.

12. In the new spark plug Champion RCJ6Y (for Husqvarna) set the gap to 0.5 mm.
Unscrew the old spark plug and install a new spark plug into the trimmer cylinder!
(the old candle - either throw it away immediately, or clean it, set the gap and prepare to wash it in order to hide it in storage).

Note: Due to carbon deposits on the spark plug electrodes: interruptions in engine operation occur (the trimmer engine malfunctions), a drop in power occurs, and the engine may not start easily.

Note: Carbon deposits on the electrodes of the spark plug are formed due to improper adjustment of the trimmer carburetor, if there is a lot of oil in gasoline and when the air filter on the trimmer is dirty.

13. Disconnect shock absorber cap(two side screws).

14. Disconnect barbell from the motor (three end bolts).

15. Remove from the front clutch cover(three end bolts) and inspect the condition of the drum, bearing, clutch spring and weights (check for wear). If necessary, replace it at a Husqvarna dealer, or disassemble it for washing.

16. Disconnect throttle cable(in two places).

17. Separate from clamp and stack spark plug wire and wires to the “jammer”, and disconnect jammer wires on the trimmer motor.

18. It is not recommended to disassemble further, as the factory ignition setting will be disrupted! (let me remind you: our task is only maintenance and repair of the trimmer). Muffler and intake panel It is not recommended to remove it (just check the fasteners!), so as not to break the tightness of the intake/exhaust and to prevent dirt from getting into the cylinder when washing.

19. Loosen one bolt and remove shock absorber from the pipe. Wipe the seat on the pipe dry. Remove the shock absorber cover.

Note: I removed the spark-extinguishing mesh in the muffler to prevent possible overheating of the trimmer engine due to the mesh being clogged with carbon deposits.

Safety precautions: Sparks may fly from a muffler without a spark-extinguishing mesh.
Caution! Do not work where there is dry hay, gasoline or other flammable materials.

Washing trimmer engine parts

20. Prepare at T.O. and trimmer repair:

• photo.bath (empty and clean);
• 1.5 liters of pure gasoline, no oil! (to pour 0.7 liters into the bath twice);
• a narrow brush with long, hard bristles;
• a pump with a purge tip (or a compressor with a receiver);
• large clean rag.

21. In order, wash with gasoline, blow out (!) and wipe painted surfaces with a clean (!) rag, including bolts and rubber bands (5 of them):

• trimmer air filter cover and rubber band;
• carburetor Zama C1Q (with partial disassembly and checking the holes with a thin copper wire);
• carburetor and air filter housing, quickly(!), since gasoline dissolves some types of plastic;
• the tank plug, especially the holes and the tank itself (if necessary, remove it with a hook from a bicycle spoke, remove the fuel filter from the tank and replace it);
• cylinder cover;
• trimmer starter block;
• coil wires on the shaft pipe;
• Wrap the spark plug cap in cellophane and place it on the spark plug (then wipe with a dry cloth).
• Thoroughly wash and blow through the disassembled engine (carefully!, as gasoline corrodes the plastic parts of the ignition coil), especially carefully wash the entire engine cooling system!, to avoid overheating during extreme conditions trimmer operation;
• old spark plug (clean first, if there is one) and put it in storage;
• shock absorber and shock absorber cap;
• disassembled trimmer clutch;
• clutch cover;
• aluminum tray;
• muffler cover;
• wash the bolt heads and rubber bands (there are 5 of them);
• Wash the tray and brush in the remaining gasoline, wipe and hide.

22. Repeat paragraph 21 (selectively).

23. Wash your hands.

24. Inspect all wires and clean connections! (there are three of them?).

25. Open the trimmer throttle handle in half, disconnect the throttle cable and use a pipette to drop oil into the cable casing from both sides of the casing, constantly moving the cable to lubricate it. Clean and reassemble the throttle handle.

The procedure for reassembling the engine when so. and repair of Husqvarna 333R trimmer

Note: I will be grateful to everyone who expresses their opinion in the comments about T.O. and repair of a Husqvarna trimmer (or compare with that and repair of a trimmer of another brand).

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