Carburetor Adjustment Stihl 55 Trimmer

If you often encounter the need to mow grass on the site, then specifically for this you can use modern devices such as trimmers or lawn mowers. Among other solutions, lawn mowers are presented on the modern market, with the help of which it is possible to maintain the adjacent territory in a tidy condition.

One of the important advantages of the lawn mowers is that it is not tied to a power source on the principle of electrical units. But you can use such equipment even on uneven areas and in inaccessible places, here you should include the territory under the bushes.

Lawn mowing device

Carburetor Adjustment Stihl 55 Trimmer

Stihl FS 55 lawn mowers should be known to you if you plan to operate the equipment, much less repair it. The internal combustion engine in this unit is almost the same as in a chainsaw. However, the tire of the latter is fixed to the engine gearbox by a long tubular bar. Inside is a shaft that transmits torque from the motor to the working tool. This design is suspended on a belt that slides over your shoulder. This allows you to hold the tool on weight, which is important for the sensitive mass of the chainsaw.

The handle is fixed to the unit rod, with it you can move the end of the rod with the working tool. The Stihl FS 55 lawn mower, the repair instructions for which are presented in the article, has a protective shield on the part of the person in the form of a casing that eliminates personal injury during operation. The instrument itself is a round drum, on both sides of which a thick fishing line comes out of the holes. When the drum spins, the fishing line is pulled by centrifugal force and hits the grass, chopping it.

The Stihl FS 55 lawn mower, the technical specifications of which will be presented to your attention below, has a wear-resistant nylon fishing line. It is periodically updated by unwinding the reel inside the drum.

Model description

The above equipment option costs 13,490 rubles. It is a premium device. With it, you can take care of the territory on a large suburban area. Young and old grass, reeds and weeds, as well as young shrubs, lend themselves to equipment.


Why choose FS 55

Customers also like the bicycle handle, which improves handling. During work, the hands will be spread wide, so it is easier to control the unit. He is very maneuverable. Customers like the grip and strap to be adjusted to the needs of the operator.

The tool can be easily configured for comfortable use. The controls are on one handle. You don’t need to reach anywhere, everything is located under the palm of your hand. According to consumers, the Stihl FS 55 lawn mower is also convenient because it has a pair of protective covers, one of which is installed for the knife, while the other is for fishing line. The casing for the latter has a narrowing at the bar.

Operating Instructions: Safety Precautions

The equipment described above must be used with special clothing and equipment. Clothing should not interfere with work. You should choose one that fits well with the body. It is necessary to exclude wide sleeves that could catch on shrubs, wood or moving parts of the unit.

It is important to remove ties and scarves. This also applies to jewelry. Before you start the Stihl FS 55 lawn mowers, you must wear safety boots that have a rough sole. It is important to use a special protective helmet and goggles, which exclude damage to the organs of vision.

Motor start

The engine is started at a distance of 3 m or more from the place of refueling the device with fuel. It is impossible to carry out these works indoors. Before starting, you need to take a stable, reliable position. At the same time, the motor device is held as firmly as possible. The cutting tool must not come into contact with the ground or objects, because it can rotate when starting.

The unit is serviced by only one person, while no unauthorized persons should be in a zone of radius up to 15 m. Otherwise, personal injury may result from dropping objects. Starting the Stihl FS 55 lawnmowers, the characteristics of which are presented in the article, should not be carried out by hand. After releasing the gas lever, the cutting tool will move for some time by inertia. Flammable materials must be kept away from the hot gas stream and the surface of the hot muffler, as this may cause a fire.


The lawn mowing works due to gasoline, which is highly flammable. Therefore, when refueling, do not smoke close. Before refueling, the motor turns off. Such manipulations should not be carried out until the engine has cooled, as the fuel can overflow and begin to pose a fire hazard.

The fuel tank lock is opened with extreme caution, because overpressure can cause fuel splashing. The Stihl FS 55 lawnmower, the operating instructions of which you must have studied before using the device, is refueled in well-ventilated areas. If fuel has been spilled, the device should be immediately cleaned so that it does not get on clothing, otherwise the latter should be changed immediately.

After refueling is completed, tighten the threaded lock of the fuel tank. This will reduce the likelihood of it being unscrewed due to vibration of the motor. If this is not foreseen, there will be a danger of fuel leakage. It is important to pay attention to leaks. If the fuel is spilled, then the engine should not be started, otherwise there may be a risk of burns.

Repair instructions

The Stihl FS 55 lawn mower, the operating instructions of which are supplied and must be studied by you before starting work, is a high-tech equipment that is not difficult to maintain. You can carry out repairs and adjustments yourself. As for the carburetor, this is a matter of 5 minutes.

The main problems with carburetor malfunctions can be breakdowns and blockages. In order to find out the reason, unscrew the fuel filter cover and remove the strainer. If dirt has accumulated on it, then purging or flushing in gasoline will help. If you find visible changes on the filter, then it should be replaced with a new one.

The fuel supply pipes may also be damaged. Failure of the carburetor starting device may occur due to gaps. For washing, gasoline or acetone is used. The carburetor can be purged with compressed air, for this you can use a convenient repair practice. The exhaust or intake manifold, as well as the throttle body and those places where the carburetor parts are interconnected, may be depressurized. If you encounter the aforementioned problem, then you can verify it with a soap solution that is applied to the desired area.

Carb adjustment

The carburetor for the Stihl FS 55 lawn mowers can easily be adjusted independently. To do this, the filter should be cleaned, following the maintenance rules prescribed in the instructions. The carburettor is adjusted by adjusting screws, there are three of them:

The latter adjusts the fuel mixture for low revs. You need to find the maximum idle speed. To do this, the right screw rotates in both directions. In order to carry out the adjustment, the screw must be turned counterclockwise a quarter of a turn.

When adjusting the Stihl FS 55 lawn mowers, you must also use the lower screw, which is responsible for adjusting the engine. If you turn it clockwise, you can achieve an increase. For proper idle adjustment, normal speeds of the hot engine, stable operation of the cold engine and a large speed reserve for the trimmer head are characteristic. The engine at the same time continues to work stably even when changing position.

The carburetor adjustment of the Stihl FS 55 lawn mowers also involves the use of the left screw. It regulates the mixture at high speeds. This screw must be dealt with in the last turn, because it determines the adjustment of the maximum speed, flow rate and temperature of gasoline, as well as engine power.

Guidelines for holding and maintaining the device

The lawn mowing must be held securely with both hands. The operator should be in a stable position. You need to grab the handles with both hands. For sale are lawn mowers with a round handle, while the left hand should be on a hill, and the right hand on the working handle. If there is a danger of an accident, the motor must be switched off immediately. The engine should idle idly. The cutting tool must not rotate after releasing the throttle lever.

The idle setting needs to be monitored and adjusted from time to time. If the cutting tool continues to rotate at idle, the unit must be returned for repair. When maintaining a scythe, it is necessary to pay attention to obstacles in the form of tree roots and stumps. It is necessary to work, standing on the ground. Do not use a ladder or a lifting work platform.


The lawn-mowing model described above is designed to work on a personal plot. It is great for mowing the lawn. If you install a special knife on it, then the equipment will be able to cope with rough grass, nettles and withered shoots. Quite often, the described equipment variant is compared with the FS 38. These lawn mowers differ in power.

As for the model described in the article, it has an ergonomic handle and a straight shaft. When working, you can use the manual fuel suction function, which allows you to start in cold engine mode much faster.

Before making a purchase, you need to evaluate not only the cost, but also some other features of the lawn mowers. Among them, the power that will determine the performance of work should be highlighted. An important factor is the device of the handle.