Which side of the disc to put on the grass trimmer

The best cutting system for a brushcutter: trimmer line, blade or disc

Grass trimmer or lawnmower. a popular variety of compact lawnmower in the home. It is a light and compact tool, with which you can mow small areas of the lawn, grass near trees, fences and other inconvenient places. Trimmers can trim both soft and well-maintained lawn grass, and brushwood, dead wood and tall coarse weeds. The main thing is to choose the right disc for your grass trimmer.

grass trimmers come in electric and gasoline models. Gasoline mowers, in principle, have more power than electric models. For low-powered electric mowers. generally use plastic blades or light steel blades. The more powerful petrol mowers use both steel and plastic discs.

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But the limitation comes not only in terms of power. Because grass trimmers come with a rigid or flexible gear. With rigid devices the rotation is transferred via a shaft, with flexible devices the rotation is transferred via a steel cord. The flexible cable, in particular, with the installation of a steel disc and high loads during mowing will fall into disrepair. Therefore, for brushcutters with flexible transmission use only a line for trimmer and plastic knives.

The type of construction is shown in the instruction manual of the mower. And it can also be identified visually. the grass trimmer with a curved boom has a flexible gear. Find out what type of transmission before you buy the blade or disc.

How to choose the correct knife for your grass trimmer

To put a knife on the grass trimmer is not so difficult. The manufacturer equips its tools with a special pin that allows you to lock the gear and a wrench with which to unscrew the bobbin with the fishing line. The most important thing is to observe safety rules and the sequence of disassembly when changing cutting elements.

which, side, disc, grass, trimmer

The algorithm for installing the blade on the grass trimmer is as follows:

  • Let’s remove the protective cover;
  • Locking the drive. To do this, align two holes. one in the shaft hub and one in the gear cup. After their alignment we insert a pin into the holes;
  • We unscrew clockwise from the hub bobbin with a fishing line or a nut holding the dust cover (if the grass trimmer has not yet been used);
  • Then we install the cutting knife, so that the slits on the hub washer coincided with notches in the hole cutting disk;
  • Install the duster;
  • Tighten the fastening nut (counterclockwise) holding the locking pin;
  • Tighten it using a pipe wrench;
  • Reinstall the blade guard.

As you can see, there is nothing complicated. Now you can safely proceed to mowing weeds on the site.

How to install the saw blade on the grass trimmer

The main working bodies of any trimmer for grass are spool with a fishing line or a special disk (plastic or metal). You can mow green grassy plants with a plastic blade and a line, and dry grass, reeds and even bushes with a metal blade. Is it possible to increase the functionality of the grass trimmer by installing a saw blade on it??

This mounting procedure is no different from a typical saw blade, but it does require more care, attention and inspection. Remove the filament spool by blocking the gearing shaft with a pin or a screwdriver of suitable diameter and turn the filament container counterclockwise.

We try on the diamond disk to the lower slotted washer and make sure that its seating hole is larger than the diameter of the seating ring on the washer. At high revolutions the saw blade can shift and unbalance, which will inevitably lead to tool breakage and even injury of the operator or people nearby. Let’s try on compensating washers one by one and choose the one that suits the width and the gap between saw blade fitting place and centering band of the lower washer completely. Install alternately on the gear shaft lower washer with an expansion ring, diamond disc, upper washer and protective cup, which still partially redistributes the clamping force over a larger area. Tighten the entire set on the gearbox shaft with the left-hand thread, first by hand, then with a socket wrench, locking the gearbox shaft from below with a suitable screwdriver.

Remove the plastic tube from the teeth and check once again that the saw blade is firmly attached to the gearbox shaft. If it turned out to be reliable, the grass trimmer, with the diamond disc installed, is completely ready, both for traditional and not intended for this tool, to work.

Putting it to the test

For safety it is necessary to wear a protective helmet with a transparent visor to protect the face, gloves on the hands. First we try to remove thinner dry twigs, then gradually moving to larger ones, and finish the test by cutting dry and semi-dry tree trunks 7-8 cm in diameter.

Check that the diamond disc grass trimmer works quite effectively, reliably and safely. Cuts, both crosswise and oblique, are very smooth. No crumpled or torn wood fibers are visible. Cutting grass with a diamond blade is also very comfortable, efficient and productive no matter how high, thick or dry the grass is. So, the grass trimmer with a circular saw blade not only perfectly performs its direct function (mowing the grass), but also expands the field of application (removing knots and branches from trees, and sawing thick trunks). Attention! It is not a good idea to mount discs of large diameter and thickness on grass trimmers as this will cause increased stress on the gearbox and engine and possible premature breakdown. Also reduce the safety of working with such a tool, which should not be allowed in any case.

When the use of knives is relevant

When using a brushcutter in the countryside, the most popular attachment is a line for the trimmer. It is inexpensive, suitable for different trimmer heads, safe to use. The disadvantage of using a fishing line is that it is convenient only for mowing low growth. In other situations, the string is immediately clogged, regardless of whether a gasoline or electric trimmer model for grass is used. Also, vegetation gets wrapped around the spindle, which causes significant resistance to the shaft and leads to shaft breakage. It can also cause the piston system in chain saws to fail, or the motor in electric trimmers to burn out.

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That’s why different attachments are used for mowing tall or tough vegetation. So, for cleaning tall and rough grass, thin shoots of trees and bushes it is better to install and use a disk. This nozzle is clogged much less often, which contributes to a greater durability of the equipment.

Criteria for selecting the disk

You must choose a plastic or metal blade, taking into account the area to be cut, as well as the type of the trimmer for grass. electric or gasoline. The number of blades will depend on what kind of overgrowth you need to remove with the tool. To select the desired shape of the disk, the number of blades and material of manufacture, please refer to the instruction manual of the device. The electric lawn mower is a power tool that advises which cutting attachments are best for which applications.

Material

Metal blades are not recommended for electric mowers, because their construction makes them dangerous for the user. This is due to the curved shape of the boom, the lack of stops on the handles, and the high rotation speed.

On trimmers with a flexible boom from the point of view of safety, plastic blades should be used. Their purpose. mowing soft grass, dead wood. Whereas metal discs work well with tall, dense, hard undergrowth, shrubs, and tree sprouts.

Blades

The number of blades is important for many tasks. So, for shredding grass, two or three pieces are enough

For making hay, you need to have four to eight blades on the blade. For destroying small shoots on trees and shrubs, instead of blades there should be a large number of small teeth on the discs.

Which shape to choose?

Do not believe the sellers, who foam at the mouth trying to sell you a knife for grass trimmer of some exotic shape, equipped with a dozen blades. Experienced gardeners say that the shape and size of the blades have almost no influence. The number is important only when you make hay. If you have four or more blades, you get a grass trimmer. It is believed that for haymaking, the Patriot grass trimmer blade with several small teeth (it is almost round) is optimal. If you want to deal with the area, which is completely overgrown with weeds, and the power of your tool is not too great, it is better to buy peorized knives of hardened steel. They are very light, but they cut just fine.

By the way, a good knife for trimmer for grass STIHL with similar characteristics will allow not only to remove from the site dry and hard grass, but also to deal with small trees that had time to grow up for a couple of years. Note that for such outstanding results, you need to buy consumables only in specialized stores, as a knife made of bad Chinese steel can lead to very unpleasant consequences.

How to Sharpen a Grass Trimmer Disc

, short properties, including lawn mower blades and grass trimmer blades, purpose comparison, advantages and disadvantages, the right blade, also reviews of grass trimmer blades

How to sharpen the blades of brushcutter and trimmer for grass

  • First, carefully inspect the trimmer blade for grass, no bends or cracks on it (to prevent the rupture of the blade at high speed).
  • Using the template of a new blade, draw the sharpening stripes on the worn blade (to ensure correctness of the blade shape and evenness of its wear).
  • Grass trimmer blades must be sharpened with medium grit emery wheel (in order to keep the cutting edges sharpened without overheating the metal).
  • Resharpen all blades idyntically!, Not in a hurry, at an angle of 30° (to prevent the weed trimmer from vibrating and ensure an easy and smooth mowing).

If the blades of brushcutter (grass trimmer blades) blunt or incorrectly sharpened. it is overload the engine, high fuel consumption, low productivity, poor mowing and fatigue the operator very quickly.

Husgvarna Multi 300-3 3,45mm weed knife (1)

  • It is designed for particularly heavy work (for example, on the railway slopes, where rubble, pebbles, hard bushes, iron). it is a faithful blade and it holds for a long time (and wear and wriggle);
  • But it mows grass very badly, especially if the grass is weak and very heavy.

WINDSOR 300-3 2mm weed knife (1)

  • For mowing hard weeds;
  • For lodged and twisted grasses and weeds (it comes out more awful);
  • And it’s the right knife (for me the best) it can mow anything! (the blade is wider in the middle).

Comparing a Windsor knife to a Husqvarna knife

  • It unwinds more easily.
  • It is easier to move (light weight).
  • It is easier to sharpen (metal is weaker) and there is no question how to sharpen.
  • It cuts easier (thinner).
  • It can cut small, sparse grass.
  • But the brushcutter blade wears down fast: in some places three times as fast as Husqvarna blades.
  • But it bends. when hitting a hard stump, for example.
  • But it has less inertia for chopping.

Reviews of brushcutter blades

Convinced that the 8-tooth disc mows even better in hay than the 3 or 4 blade knife. Virtually does not shred the grass and the grass is less likely to get stuck between the blade and the blade guard.

How to Sharpen the blade for grass trimmer

, short properties, including blades for lawnmowers and grass trimmer blades, purpose comparison, advantages and disadvantages, the right knife, also reviews of grass trimmer blades

How to sharpen grass trimmer and brushcutter blades

  • First carefully examine the trimmer blade for grass, no bends or cracks on it (to prevent the blade breaking at high speed).
  • Using the template of the new knife, draw the sharpening lines on the worn knife (to ensure correctness of its shape and evenness of its wear).
  • Grass trimmer blades should be sharpened on a slow-speed medium grit emery wheel (so that the cutting edges are sharpened and do not overheat the metal).
  • Sharpen all facets in an identical way!, leisurely, at an angle of 30° (to eliminate the vibration of the blade during grass trimmer operation and ensure an unobstructed and easy mowing).

If the trimmer blades are dull or not properly sharpened, it will overload the engine, increase fuel consumption, result in low productivity, poor mowing and operator fatigue.

Purpose of Husgvarna Multi 300-3 3,45mm weed knife (1)

  • It is designed for particularly heavy work (for example, on the railway slopes, where rubble, pebbles, hard bushes, iron). it is a faithful blade and it holds for a long time (and wear and wriggle);
  • But it mows grass very badly, especially the weaker ones, and it is very heavy.

Purpose of the WINDSOR 300-3 2mm weeding knife (1)

  • For mowing hard weeds;
  • For lodged and twisted grasses and weeds (comes out more awful);
  • And it is a faithful knife (for me the best) it can mow everything! (The middle of the knife is more expansive).
which, side, disc, grass, trimmer

Comparing the Windsor knife to the Husqvarna knife

  • It’s easier to untwist.
  • It is easier to move (lightweight).
  • It is easier to be sharpened (the metal is weaker) and there is no question how to sharpen.
  • It cuts easier (thinner).
  • It can cut small, sparse grass.
  • But the brushcutter blade wears out quickly: in some areas three times as fast as Husqvarna knives.
  • But it bends, for example, when hitting a hard stump.
  • But it has less inertia for chopping.
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Reviews of grass trimmer blades

Convinced that the 8-tooth disc mows hay even better than the 3 or 4-blade blade. Virtually does not shred grass and grass gets stuck between the knife and protection.

How to convert a weed trimmer with a line to a blade

With the advent of summer many owners of homestead plots are troubled by the question of how to put a knife on the trimmer for grass.

No less relevant are the questions of why and when it is advisable to replace the line for a trimmer on a brushcutter with a more durable cutting element. The oleo-mac tr 130 e grass trimmer kit includes a mower disc with a grass trimmer simple with a scythe on.

In our article, we will try to break it all down and give useful recommendations for gardeners.

a grass trimmer with a blade mounted on it is most convenient to use for more comfortable mowing tall and coarse grass in the country. The trimmer line on your brushcutter fails in such cases. Thin grass tears very quickly.

The use of thick 23 mm cord or homemade rope ropes causes the vegetation to twist on the bobbin. It puts more strain on the engine.

As a result, the piston group and other moving parts of the machine wear out very quickly.

there is always a risk of overheating the electric motor and damaging the flexible shaft. And it’s all about the high torque of the electric motor.

The grass coiled up on the spindle creates strong resistance to the shaft, reminiscent of a speedometer cable, which cannot stand and twists.

In order to save the technique from premature wear, manufacturers have provided for the possibility of installing special knives on the grass trimmers. The design and shape of existing cutting elements allow you to easily cope not only with rough and overgrown grass, but also successfully deal with young shrubs.

Before you buy and put on a brushcutter knife find out what they are and in what cases are used. Today, manufacturers offer the consumer a large number of types of these consumables. In general, all cutting tools designed for grass mowing can be classified:

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For safety reasons, manufacturers do not recommend steel blades for electric grass trimmers.

Depending on the manufacturer, they can be solid disc-shaped construction, with several blades, or in the form of a special mowing head that provides for the installation of removable plastic blades.

It is not so difficult to install the blade on the grass trimmer. The manufacturer has its tools with a special pin to lock the gear and a wrench that unscrew the bobbin with the fishing line. The most important thing to observe when changing cutting elements safety and sequence of assembly disassembly.

Algorithm of the blade installation on the grass trimmer is as follows:

  • Let’s remove the blade guard;
  • Lock the drive. To do this, two holes must be aligned. in the shaft hub and in the gear cup. After aligning them, insert the pin in the holes;
  • Unscrew clockwise from the hub of the bobbin with the line or the attachment nut that holds the dust cover (if the grass trimmer has not yet been used);
  • Further we mount the cutter blade, so that the slits on the hub washer coincide with the notches in the cutter blade hole;
  • Install the dust cap;
  • We tighten the mounting nut (counterclockwise) holding the locking pin;
  • Tighten it using a pipe wrench;
  • Put the protective hood back in place.

As you can see, there is nothing complicated. Now you can safely proceed to mowing weeds on the site.

With the advent of summer, many owners of homestead plots are concerned about how to put a knife on the trimmer for grass. Steel blades with double-sided sharpening the lawnmower for “winter hibernation”. As a knife is cheap and.

No less relevant are the questions of why and when it is advisable to replace the line for trimmer on brushcutter more durable cutting element. Clamp such a spool on the trimmer for grass just like a spool with me on a similar trimmer.

When the use of knives is relevant

When using a brushcutter in the countryside, the most popular attachment is a line for the trimmer. It is inexpensive, suitable for different trimmer heads, safe to use. The disadvantage of using a fishing line is that it is convenient only for mowing low growth. In other situations, the string is clogged immediately, regardless of whether a gasoline or electric grass trimmer model is used. In addition, vegetation wraps around the spindle and causes significant resistance to the shaft, leading to its breakage. It can also cause the piston system in chain saws to fail, or the motor in electric lawn trimmers to burn out.

That’s why different attachments are used for mowing tall or tough vegetation. So, for cleaning tall and rough grass, thin shoots of trees and shrubs, it is better to install and use the disc. This nozzle clogs much less frequently, which contributes to the greater durability of the technique.

Also for your convenience! Due to the fact that the engine of electric and cordless trimmers is less powerful than that of gasoline mowers, so the use of discs is more relevant for gasoline mowers.

Special features for brushcutter blades

Blade blades are available in plastic and metal, and in various shapes for various applications.

  • Two-, three- and four-blade blades with distinctive blades are used for cutting grass and brushwood. However, they are not suitable for making hay, since they chop up the shoots by shredding them several times.
  • Massive four-blade blades are not only suitable for clearing grass, but also for cutting hay. They prevent the shoots from being cut several times, making them suitable for storing for the winter.
  • Discs with cutting edges on the perimeter are useful for beveling reeds and rushes. These blades are very heavy, a necessary quality for cutting thick stems.
  • Professional sawtooth blades for brushcutters and brushcutters allow you to cut small trees and bushes.

Plastic blades are used as an alternative to metal discs. They are not held tightly in the head and rotate by centrifugal force. Plastic blades are very tough, so they last a long time.

For your information! The advantage of plastic disks is that if they hit an insurmountable obstacle, they bounce and there is no repeated contact.

Special features of brushcutter blades

Blade discs are available in plastic and metal, as well as in different shapes to perform a variety of tasks.

  • Two-, three- and four-blade blades with distinctive blades are used for mowing grass and brushwood. However, they are not suitable for making hay because they shred the shoots, cutting them several times.
  • Massive four-blade discs are designed not only for clearing the ground from the grass, but also for mowing hay. They prevent the shoots from being repeatedly cut, making them suitable for winter storage.
  • Discs with cutting edges on the perimeter are good for cutting reeds and rushes. These blades are very heavy. a necessary quality for cutting thick stems.
  • Professional sawtooth blades for brushcutters and brush cutters are good for cutting down small trees and bushes.
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Plastic blades are used as an alternative to metal discs. They do not need to be fastened tightly in the head, and they rotate as a result of centrifugal force. The durability of plastic knives is high, so the service life is long enough.

Tip! The advantage of plastic discs is that if they hit an insurmountable obstacle, they bounce and there is no renewed contact.

How to install the blade on the grass trimmer

Installing the blade on the grass trimmer is very simple. To do this, use the complete wrench to disconnect the cutting nozzle, and a pin to lock the gearbox. The procedure is as follows.

  • First of all, you should disconnect the electric grass trimmer from the network, the gasoline one. just shut off. Detach and set aside the blade guard.
  • Next you need to align the holes on the gearbox and the shaft to stick a pin in them and lock the drive.
  • If a bobbin with fishing line was used, it must be unscrewed in a clockwise direction.
  • Then you need to find a nut to screw the blade.
  • The next step is to install the blades. Trimmer owners often wonder which side to put the disc. This should be done so that the marking with the numbers and letters is at the top.
  • Then you need to put a dust cover on top, and above it. a fixing nut, which must be tightened tightly with a wrench.
  • The last step is to install the protective cover.
which, side, disc, grass, trimmer

As you can see, the procedure is very simple and the same for many brands, whether it’s STIHL or Husqvarna equipment.

Note! If the owner of the device wishes to replace the disc back to the line for the trimmer, you can install the spool with it in the same way.

Plastic discs on the grass trimmer. when to use

While petrol trimmers use metal milling and paddle discs, plastic discs are recommended for electric tools. The low weight is their main advantage, so the strain on the electric motor is completely eliminated. The mowing head is a plastic base plate on which the blades are mounted on the perimeter. The blades are made of soft plastic that does not deform when it comes into contact with an obstacle. The blades are mounted on a circular base at an angle of 120 degrees.

They are designed for mowing dense grass with electric trimmers when the trimmer line fails. If the nozzle has a high moment of inertia, it can be reduced by making symmetrical holes. When the teeth are blunted, they should be sharpened at an angle of 30 degrees, using a grinding wheel with low or medium roughness.

Disc design Use Characteristics
Cutter peorized with 40 teeth For a clean cut of lawns and high grass. Great for mowing grass in fields and brushwood Eliminates wrapping of grass on discs and low gearbox loading. High efficiency in big quantities of grass
Milling peorized with more than 40 teeth (60-80) For small trees with a stem thickness of 7-8 cm Suitable for cutting grass with small growing trees
Mono-tooth mowing with 8 to 32 tines Mowing thin and tough bushes in raspberry and currant bushes. Cope with grass mowing effectively, but only with powerful machines Effectively cuts stems of small bushes. Pressure on gearbox
Blade with one, two and three knives Stiff grass, brushwood Repeatedly shredding grass, which increases load on the gearbox
Blade design with 4 or more blades Branches and hard grass scythe, can be used for making hay Has a low moment of inertia
Plastic discs For small and dense grass in household plots Does not stress the electric motors of trimmers

Sharpening trimmer blades correctly what you need to know about it

Metal cutting blades with blunt cutting edges can become dull during use. This is normal and should not be used any longer. Blunt blades have a low performance, so in addition to unsatisfactory mowing results, you also get overheated engine and gearbox wear. If blades or teeth of the cutting discs are blunted on the trimmer, they must be resharpened. Some people prefer to buy new cutting blades, which is not rational at all.

This is interesting!All blades and wheels should be sharpened including pobedite blades. To sharpen a wheel with a pobedite tip, you will need a special diamond wheel. How to sharpen a tipped disc is described in detail in this article. A step-by-step description of how to sharpen a grass trimmer disc:

  • First you need to remove the cutting element from the tool. It is not safe to grind on the tool
  • Inspect the workpiece for suitability. Cracks, chips and other deformations are not allowed. In the presence of such, it is necessary to perform the replacement of the device
  • To sharpen the disk, such tools and materials as a sharpener, file, angle grinder are used. What is the best choice, depends on the skill of the operator. The easiest and safest way is to use a file. To do this, attach cutting equipment to the vice jaws and grind manually at an angle of 30 degrees
  • If you use a grinder (emery) or angle grinder, then in such a case you will need to carefully perform sharpening. When sharpening, do not allow the metal to turn red (metal tempering will occur), otherwise it will lead to rapid wear and abrasion of the cutting part
  • The optimal option, which is recommended for beginners (it is also used by masters with experience). is the use of a file. The file can be used to sharpen the cutting edge as accurately and precisely as possible at an angle, which will have a positive effect on the performance of the tool
  • If you have to sharpen a milling disc with a large number of teeth, then an angle grinder with a fine abrasive wheel is recommended for such cases

The video below shows how to correctly sharpen mower discs with a large number of teeth.

After sharpening the grass trimmer blade, all you have to do is put it back in place and check how effectively the tool works. After sharpening, make sure you do not touch the sharp cutting edges of the disc, otherwise it may cause injuries.

To summarize, it should be noted that the efficiency of grass mowing depends on the right choice of trimmer disc. For mowing grass on the roadsides and paths, trimmer line is used, but for fighting weeds in the countryside, as well as for making hay in the fields and wooded areas, lawn mowers with metal discs are used. If your budget allows, we recommend buying 3 types of metal discs and trying them out for yourself to see the difference.