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How to replace a fishing line in any trimmer
So, first unscrew the nozzle. Do this by rotating the drum to the right. Here we have a drum in our hands with the remains of an old fishing line. We open it. Most often, the lid closes with latches, which can be opened with a screwdriver by threading it into the holes and pressing lightly. Or you need to squeeze the lock and turn the cover in the direction of the arrow. In this case, the lid itself must be kept, as in drums with automatic supply of fishing line there is a spring, which, when straightened, can throw out all the internal parts of the drum. Gently pulling out the reel, we remove scraps of fishing line from it.
Now you need to take 5 meters of new fishing line and fold in half (to find the middle). In the middle part of the reel there is a recess (in some designs. a hole), for which we need to hook our fishing line. There is also an arrow on the reel showing the direction of winding. An important detail. if the reel has two compartments, then one half of the fishing line should be wound in one direction, and the other in the other. Finishing the winding, you need to leave 15-20 cm of fishing line free. There are also two recesses on the upper ring of the coil through which these free ends must be drawn. We coped directly with the winding itself.
The last step in the fishing line replacement process is to assemble the drum. First you need to put the spring and washers in their place. Then, holding the reel with one hand, with the other you need to thread the ends of the fishing line into the corresponding holes on the sides of the nozzle. After that, install the coil in its place, pulling the fishing line and trying not to displace the spring. When all the internal elements of the nozzle take their places, you can close the drum with a lid. You just need to make some effort so that the latches fall into place. Voila! The mowing nozzle is ready to work!
When choosing a fishing line for your motor scythe (gasoline or electric), you should dwell on some points, which we will discuss in detail.
Video: How to Change a Lawn Mower Attachment
Diameter of fishing line.
Engine power determines what maximum fishing line diameter can be used for a given scythe. For example, a manufacturer of an electric trimmer with a power of up to 1 kW recommends using a fishing line ø2 mm, and at values of about 500 W. only ø1.5 mm. Also, the manufacturer of any powerful trimmer with a curved bar recommends using a ø2 mm fishing line.
A gasoline engine is more durable than an electric one. because there you can install a thicker fishing line, which means stronger, which allows you to mow more grass and work longer.
For straight grass barrels, you can select a fishing line according to the following simple algorithm: the engine size in tens of cubic centimeters corresponds to a diameter in millimeters. For example, for a Husqvarna 128R lawn mower with an engine capacity of about 25 cm3, a ø2.5 ± 0.2 mm fishing line should be used. For more powerful brush cutters with volumes of more than 40 cm3, only the geometric dimensions of the outlet openings of the mowing head. no more than 4 mm, are used to limit the diameter of the line.
So, a thin fishing line (about 1.5 mm) cuts well the cultivated lawn grass, and thick (for example, 22.214.171.124 mm) successfully destroys weeds and even young shrubs.
The shape of the fishing line.
The simplest and cheapest in production is a round fishing line. However, the requirements of ergonomics and environmental protection limit its use. due to its physical properties, it creates an unacceptably high noise level (which is comparable to the noise of the engine itself). These are the classic Husqvarna round fishing line or Oregon RoundLine or Chipmaster.
To reduce the noise level produced by the fishing line, they give it a special shape. they make it spiral like Oregon DuoLine Plus (noise reduction by 15 dB) or with special transverse grooves like Husqvarna Whisper (-8 dB).
Following the school laws of physics, "working" part of the fishing line in the process of cutting. only end rather than side surface. However to enhance "pungent" fishing line, i.e. to increase efficiency, the cross-section is changed to faceted: star-shaped, square or square with teeth. Oregon StarLine, Nylsaw or Flexiblade.
For example, according to experts, the Oregon Nylsaw fishing line, thanks to its square profile, is 27% "sharper" its analogue of circular cross section, which clearly affects the increase in the speed of mowing.