How to change the blade on the trimmer. Tips and recommendations on how to wind a line for trimmer and what to know

Learning how to properly wind the line for the trimmer on the reel of the grass trimmer and lawnmower installation instructions

Owners of private homes know how necessary is such a type of tool as a trimmer for grass. It can be petrol and electric, and they differ in the design of power units. For mowing grass in areas where there are rocks, trees and other obstructing objects, a line for trimmer is used as a cutting device. This consumable material wears out during use, so how to wind the grass trimmer reel, we will consider in detail in the material.

The fishing line is called a consumable material, which consists of nylon, and serves as a cutting device. This tool is used to cut the grass by rotating the head of the tool at high frequency. This material has different thickness, which depends on its application to the respective tools electric low-power (1 to 1.6 mm), electric from 500 watts (2-2.4 mm) and gasoline grass trimmers with brushcutter (2.4 to 3.2 mm).

The more powerful the tool, the thicker the cutting attachment should be. It affects not only the quality of grass trimming, but also the service life of the material. If you’re wondering how to wind the grass trimmer reel, then it’s time to change the reloading tool. With the onset of spring, this issue is becoming more and more in demand, so it’s time to figure out the step-by-step instructions for replacing the line in the grass trimmer reel.

What types of trimmer blades there are

Initially, we should note that metal discs can be used not only on gasoline, but also on electric trimmers. The main condition for using metal cutting blades on the machine is that the transmission mechanism (shaft or gearbox) must be of the rigid type. A rigid type gearbox is a metal shaft that transmits the torque from the electric or gasoline engine to the working body.

There are models of trimmers with flexible shafts, in which the gear design is represented by a steel cable. These are usually low-powered electric grass trimmers, which are not designed for heavy loads, as well as domestic lawnmowers. Do not use metal disks on trimmers with flexible shaft (only plastic disks can be used), because this will lead to rapid failure of the gearbox. Before you buy metal cutting cutters, you need to find out the type of the transmission mechanism of your tool. rigid or flexible.

What type of transmission mechanism is used on the trimmer is specified in the technical description to the tool. If the grass trimmer has a curved boom, it uses a flexible shaft. Tools with straight boom can be equipped with rigid or flexible gearboxes, depending on the power of grass trimmer.

Trimmer blades are classified according to these characteristics:

• Material of manufacture. they come in plastic and metal. Plastic blades are less efficient than metal blades, but they put less strain on the tool’s shaft and drive train. Plastic discs are used on electric trimmers and domestic gasoline mowers
• Design of cutting devices. Steel discs can be of two types. bladed and toothed (milled). Plastic blades are available in paddle form. Toothed devices have a similar design to circular discs, while the paddle ones have large flat blades
• Number of cutting edges. The number of teeth and blades on the discs differs, which affects the performance of the cutting equipment. Toothed discs have as many as 80 links, while paddle discs have from one to four
• Additional coating. steel toothed discs are additionally equipped with pobedite tips, which allows to use the tool for mowing grass on bumpy surfaces. When the blade comes into contact with obstacles in the form of earth and stones, the teeth are not deformed or blunted, which is achieved by using pobedite tips. Specialists say that devices with a carbide tip do not last very long. The solders wear out quickly, and then the cutter is used without the pobedite

Plastic blades for trimmers not only cost less than metal blades, but they also do not put high loads on the motor and transmission mechanism. This is especially true when the blade runs into obstacles. The more elastic the cutting blade, the less likely the plastic discs are to be deformed.

This is interesting!Toothed discs with big quantity of links are used for cutting of different grass. dry grass, green lawn grass and thick-stemmed grass. Cut with such a disc is straight, clean and even. In addition, a large number of teeth eliminates their rapid blunting, and the presence of additional holes on the surface of the circle (peorats) is designed not only to cool, but also to reduce weight and increase inertia.

How to put the right knife on the grass trimmer

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

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

• We remove the protective cover;
• We block the drive. To do this, align the two holes. in the hub of the shaft and in the gear cup. After their alignment we insert a 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);
• Then mount the cutter blade, so that the slits on the hub washer are aligned with the notches in the cutter blade hole;
• Install the dust cap;
• Tighten the fastening nut (counterclockwise) holding the locking pin;
• Tighten it using a pipe wrench;
• Putting back the blade guard.

As you can see there is nothing complicated. Now you can safely start mowing weeds on your property.

How to replace the trimmer head with a Husqvarna blade?

If you want to mow tougher grass, we recommend using a mowing head with a knife instead of a fishing line. The mowing head can look like a solid metal plate with cutting blades, or like a disk with freely attached plastic blades.

• Metal cutting attachment: The metal cutting attachment is best for advanced users, because it is pretty insecure. This attachment is only recommended for straight-boom grass trimmers and U-shaped twin-grip grass trimmers.

Plastic blades: grass trimmers with D-boom and curved boom are most often equipped with a disc with plastic blades, which will ensure safety in use (but there are exceptions).

Firmly fix the metal blade to the supporting washer of the required diameter. Cover the blade with one or two lock washers from above, and then screw them onto the gearbox shaft with a nut with a left-hand thread. The nut should be pulled out carefully so that you don’t accidentally lose the.

A wide selection of quality trimmer heads and blades for trimmers, grass trimmers Husqvarna can be found on our website.

How to install the disc on the grass trimmer

Installation of the blade on the grass trimmer is very simple. Use the complete wrench to disconnect the cutting attachment and the pin that locks the gearbox. The procedure is as follows.

• First of all, you should unplug the electric trimmer for grass, gasoline trimmer. simply turn off. Release 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.

As you can see, the procedure is very simple and the same for many brands, whether the technique or Husqvarna.

As a side note! If the owner of the device wants to replace the disc back to the line for the trimmer, you can install the spool with it in a similar way.

The procedure for installing the disc on the grass trimmer

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

• First of all, you should unplug the electric grass trimmer, gasoline trimmer. just shut off. Disconnect 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 you used a bobbin with a fishing line, it must be unscrewed in a clockwise direction.
• Then you need to find the nut to tighten the blade.
• The next step is to install the knives. Trimmer owners often wonder which side to put the disc. Make sure that the marking with the numbers and letters is on the top.
• Then you need to put the dust cover on top and above it the fixing nut and tighten it with a spanner.
• The last step is to install the dust cover.

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

For your future reference! If the owner of the device wishes to replace the disc back on the line for the trimmer, you can install the spool with it in a similar way.

Self-made blade

The easiest way to make a disc for the grass trimmer in its paddle version. For this you will need:

• Part of a pipe (preferably copper rather than steel) with a suitable diameter. it will be used to make a transition sleeve for the output part of the flexible shaft.
• Steel plate not more than a millimeter thick (to make a washer).
• Standard splint (GOST 297-66) (fixing the base in the shaft).
• Stainless steel strips (1 to 1.2 mm thick) (the blade itself).
• Fixing element (it is preferable to use rivets rather than nuts/screws, even though these are supplied as spare parts with the machine).
• First you need to mark the overall dimensions of the device to ensure that they do not go beyond the protective casing during cutting. After that you can proceed to the manufacture of the bushing from the pipe.
• For a better fit, the sleeve is cut and shrunk along the outer surface of the trimmer shaft. Since the diameter of the washer can only be determined by the available space, it is also possible to choose from the closest available sizes.
• The washer must be welded to the sleeve so that the resulting cathetus of the seam would occupy a minimum of space.
• It is better to make the blades on a milling machine, paying special attention to the sharp edges and corners. they should not bend unnecessarily when sharpening them later.
• The cotter pins, which have a small vertical play, will allow you to make a good cut, especially from dead wood.
• In order to prevent the blades from jamming due to possible thermal expansion, you must carefully check the clearances (min. 1,5 mm) between the blades and the pipe.
• The last step will be the reliable fixation of the entire structure on the shaft with a cotter pin.

How to install the blade on the grass trimmer

The blade on the grass trimmer is easy to install. To do this, use the complete wrench to disconnect the cutting attachment, and the pin that locks the gearbox. The procedure is as follows.

• First of all, you should unplug the electric grass trimmer, gasoline trimmer. just shut off. Disconnect and set aside the blade guard.
• Next, you need to align the holes on the gearbox and 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 the nut to tighten the blade.
• The next step is to install the knives. Owners of trimmers often wonder which side to put the disk. This should be done so that the marking with numbers and letters was on top.
• Then it is necessary 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 blade guard.

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

Note! If the owner wishes to replace the disc back to the trimmer line, you can install the spool with it in a similar way.

Sharpening trimmer discs correctly what you need to know about it

During the operation of the lawnmower with metal cutting blades, their dulling is observed. This is a normal phenomenon, but you can not continue to operate such an attachment. Blunt blades have a low performance, so in addition to unsatisfactory mowing results, you also get overheating of the tool motor and wear of the gearbox. If the blades or teeth of the cutting discs are blunt on the trimmer, it is necessary to sharpen them. Some people prefer to buy new blades, which is not at all sensible.

This is interesting! All cutting discs can be sharpened, including white tips. To sharpen a wheel with a pobedite, you will need a special diamond wheel. What is the sharpening process for a tipped disc, see in detail in this brochure.

A step-by-step description of how to sharpen the disc of the grass trimmer:

• First of all the cutting element must be removed from the tool. It is not safe to sharpen the tool
• Inspect the element for professional 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 disc use tools and materials such as a sharpener, file, angle grinder. 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, the cutting equipment is clamped in the jaws of the vice and the grinding process is performed manually at an angle of 30 degrees
• If a sharpener (emery board) or angle grinder is used, then in such a case it is necessary to accurately perform the sharpening. When sharpening, do not allow the metal to turn red (metal tempering), otherwise it will lead to quick 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 precisely and accurately as possible at an angle, which has a positive effect on the performance of the tool
• If a milling disc with a large number of teeth is to be sharpened, an angle grinder with a fine abrasive wheel is recommended for such cases

The video below shows how to properly sharpen milling discs with a large number of teeth.

When you have finished sharpening the grass trimmer’s mowing disc, all that remains is to put it back in place and check the effectiveness of the tool. After sharpening, keep in mind that it is better not to grasp the sharp parts, as you can get injured.

To summarize, it should be noted that the effectiveness of grass mowing depends on the right choice of trimmer disc. For mowing the grass on the roadsides and paths, a line for the trimmer is used, but for fighting weeds in the countryside, as well as for making hay in the fields and forest plantations, lawn mowers with metal discs are used. If your budget allows, it is recommended to buy 3 types of metal discs and try them out on your own to experience the difference.