How To Put The Disc On The Trimmer

How to put it on correctly. What types of woods are there

The most common type of line that fits almost all reel types # 8212; round cord. This is an ordinary fishing line, suitable for mowing succulent grass, but it will be much more difficult to mow dead wood with it, and even more so it will not cope with bush.

As a rule, the diameter that can be used to cut young grass does not exceed 1.6 mm. The thicker the thread, the more coarse grass it can overcome.

Important! When choosing a trimmer line, you must follow the instructions for your tool, since a thin thread will increase the wear of the torque mechanism, and a thick thread will overload the engine.

There are fishing lines with sharp edges in the form of an asterisk or a square, this option is more adapted to mowing dry grass precisely due to the existing sharp edges, but its disadvantage is greater wear and is inferior in strength to a round cord.

There are fishing lines with improved aerodynamics with characteristic dents, scales and notches, such a product makes less noise, but it is used only on lawn mowers, since it is difficult to exit such a thread from the reel, it is used most often with discs into which segments are inserted. The disadvantage of such a product is its fragility.

Most often in gasoline trimmers with an engine with an output of more than 1.5 hp. Use cords with a metal cable inside. This thread is ideal for cutting dry grass and small bushes. The presence of a core has a positive effect on the wear resistance of this material. The disadvantage of such a cord is its price, which is significantly higher than the above listed opponents.

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How to mow with a lawn mower?

The private owner wrote.
Excuse me, who is this who is meant by professionals ?

Professionals without quotation marks mean people who have undergone training and competently operate equipment.

Summer resident I wrote.
It is only necessary to release gas when moving from one cutting area to another. When mowing, it is not necessary, why does the engine need to change loads?

The private owner wrote.
The need to change the speed when the trimmer moves. What for?

At one time, there was a detailed answer to these questions from Husqvarna:

1) Gas discharge is useful, firstly, due to the fact that the engine is slightly cooled, and secondly, the cylinder-piston group is lubricated better (especially when it comes to cutting with a disc, since the disc continues to rotate and rotate the engine by inertia). The throttle valve closes, the enriched fuel flows through the idle channel, and more oil enters the parts of the cylinder-piston group.

2) Gas relief is necessary if you have an idle passage. Eg when swathing grass: to the left. Mow, discard grass, throw off gas, drive to the right, increase throttle, start mowing to the left.

3) In principle, you can mow without throwing off the gas (if there are no idle runs and the mower is constantly under load), but pay attention to the following things. A) the line may wear out, two short stumps will not give resistance to the engine, it will work at maximum speed and overheat; b) any engine can overheat if kept at maximum speed (Husqvarna designers did not set themselves the task of getting into the Guinness Book of Records for the maximum time before killing a lawn mower at maximum speed), so it is better to dump the gas.

Oleg_o wrote.
Mows with both line and disc

What I quickly found on the Internet (for example =.)) Is drawn with a fishing line. I didn’t see anything about the disc.

Oleg_o wrote.
Spin at full speed when reversing

Why just give full speed at any move? When you start to really work, you will clearly understand from the engine whether you need to add revolutions or not. Why do you need full turns when you have three blades of grass in front of you ?

Oleg_o wrote.
About variable loads, how unhelpful it is for the engine

Remember how 2T motorcycle engines work. They don’t always run at full speed. There will be nothing with a 2T engine from a change in speed.

Oleg_o wrote.
Backward, it seems to me not very convenient to mow. The grass flies in different directions

When working with a line (that’s what I described) chopped pieces of grass scatter in all directions (including your pants and shoes) in any direction of travel. That is why the fishing line can be used to level the lawn well. If you have a disc formed by an elliptical line passing at the same distance from the ground, then with your duck movement forward over the treated area, the line will pass 2 or even 3 times. This allows you to remove steps and other flaws. No need to hurry.

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How to change the line in the trimmer and which one is better to choose

Since we discussed the choice of trimmer in the previous article. Then today we will tell you how to properly fill the trimmer with fishing line, and which one is better to choose based on the working conditions.

After you bought a trimmer and began to actively use it, sooner or later the question of replacing the fishing line will arise, since this is the most wearing element in the tool, then intensive use of the trimmer will lead to frequent replacement of consumables.

How to thread the line into the trimmer spool

It will take about 10-15 minutes to wind the line. What is a trimmer coil? Plastic body with a cassette inside, which has a special hook for easy winding of the fishing line. Almost all trimmer reels have a similar fastening principle, this is a central screw-button, when pressed, it becomes possible to pull out the line of the required length. The photo below shows a few examples of different trimmer spools.

The bobbins of the trimmers, the motor of which is located near the ground, have a different attachment to the axis of rotation, they have two buttons on the spool located on the sides that need to be wrung out, otherwise the replacement of the thread is no different from other cassettes.

The principle of correct winding of the fishing line is similar in all of the above cases, so for example, consider the standard version with two antennae.

To remove the spool with the fishing line, you need to unscrew the centrally located screw, but note that the thread is left there, so you will have to turn it clockwise, this was done on purpose so that during operation it does not open under the influence of centrifugal force.

Next, using a screwdriver, disassemble the head and remove the spool, onto which the fishing line is directly wound. Having measured the required length and folded in half, you need to tuck the fishing line into the spool, eventually bringing its ends opposite each other (for this there are special slots for fixing).

After that, it is necessary to assemble the head in the reverse order, threading the ends of the cord into two corresponding holes.

If you have doubts or it is not entirely clear how to load the line on the trimmer, we recommend that you look at: how to properly wind the line into the lawn mower. In this in detail, step by step, the instructor will open the trimmer head, measure the required amount of line, usually from two to four meters, and demonstrate assembly and installation on the trimmer.

What knives to put on an electric and lawn mower

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

  • By the type of material from which it is made;
  • By the shape of its cutting blades.

The main material for making trimmer knives can be plastic or metal. The use of such consumables largely depends on two parameters:

  • Lawn mowers type;
  • Mowing areas.

For safety reasons, manufacturers do not recommend putting steel knives on electric trimmers. Almost all electric and battery powered lawn mowers are equipped with plastic blades. Depending on the manufacturer, they can be of a solid disc-shaped design, with several blades or in the form of a special mowing head providing for the installation of removable plastic blades.

Straight bar for petrol trimmer and curved for electric

To put a metal knife on an electric trimmer is not allowed by its design features.

  1. The curved bar of the machine reduces the distance from its working part to the mower’s feet. In the event of a collision of the blades with a stone or other solid object, the scythe is thrown to the feet.
  2. The high torque we mentioned above, in the event of a metal blade hitting a hard object, transfers a large load to the trimmer flex shaft and its motor. What causes them to fail prematurely.
  3. The handle of the electric scythe most often does not have a limiting bar acting as a stop. Which does not exclude injury to the legs.

It is these features that make it possible to use exclusively plastic knives on trimmers with electric motors. When colliding with an obstacle, the blades are destroyed, thereby protecting the mower’s legs from possible injury.

The use of metal knives only on gasoline trimmers is also due to design features.

  1. Straight bar design increases leg clearance for complete safety.
  2. Comfortable U-shaped and J-shaped handles provide a firm grip. D-shaped handles of lawn mowers are equipped with a limiter that rests on the leg of the mower, which does not allow the head to come close to the feet when the cutting disc meets a solid obstacle.
  3. The clutch of the gasoline engine allows for smooth acceleration to the optimum level. And when the blade hits a hard surface, it is able to absorb part of the impact.
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Thus, petrol trimmers with a metal blade installed are best used in large areas. They will successfully cope not only with high coarse grass, weeds, burdocks and nettles, but also shrubs, as well as young trees.

The shape of the blades of the disc supplied to the trimmer does not in any way affect the quality of the work performed. Speed ​​does not depend on them either. Triangular, trapezoidal, rectangular shapes are all marketing ploy of manufacturers.

Why you need to put the knife on the trimmer

A trimmer with a knife mounted on it is most convenient to use for more comfortable mowing of tall and coarse grass in the country. The line on the lawn mower fails in such cases. Thin breaks very quickly. Using 2.3mm thick cord or homemade rods with cables causes the vegetation to wrap around the spool. This increases the load on the engine. As a result, the piston group and other moving parts of the unit wear out very quickly.

If the weeds are mowed with an electric trimmer without a knife, only a fishing line, even a thick one with a curly section, will not solve the problem. There is always a risk of overheating the motor and damaging the flexible shaft. And it’s all about the large torque of the electric motor. Grass wrapped around the spindle creates strong resistance to the shaft, which resembles a speedometer cable, which does not withstand and twists.

In order to protect equipment from premature wear, manufacturers have provided for the possibility of installing special knives on the trimmers. The design and shape of the existing cutting elements allows you to easily cope not only with coarse and overgrown grass, but also successfully deal with young shrub growth.

How to put the knife on the trimmer

With the arrival of summer, many owners of personal plots are worried about the question of how to put the knife on the trimmer. No less relevant are the questions of why and when it is advisable to replace the line on a lawn mower with a more durable cutting element. In our article we will try to disassemble all this and give useful recommendations to summer residents.

How to put a knife on the trimmer correctly

Putting the knife on the trimmer is not that difficult. The manufacturer completes its tools with a special pin that allows you to block the gearbox and a wrench with which the spool and fishing line are unscrewed. The most important thing is to observe safety precautions and the sequence of assembly and disassembly when changing cutting elements.

The algorithm for setting the knife to the trimmer is as follows:

  1. Remove the protective cover;
  2. We block the drive. To do this, it is necessary to align the two holes in the shaft hub and in the gearbox cup. After combining them, insert a pin into the holes;
  3. We unscrew the spool with line or the fastening nut holding the boot (if the trimmer has not been used yet) from the hub clockwise;
  4. Next, install the cutting knife so that the slots on the hub washer coincide with the recesses in the hole of the cutting disc;
  5. Install the boot;
  6. We tighten the fastening nut (counterclockwise) while holding the locking pin;
  7. We tighten it using a tubular wrench;
  8. Putting back the protective cover.

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

How to put the disc on the trimmer correctly. How to mow with a trimmer (with a metal knife)

1. First walk around the site ,
a) to determine:
the boundaries of the area where you will mow with a trimmer;
where are plants in the grass that cannot be cut (flowers, bushes, seedlings);
b) to determine the place of the beginning (it is necessary to start mowing with the trimmer from the lightest area in order to create an open space in order to move to bómore grass it is better to see the mowing area);
c) to determine the direction of mowing with the trimmer (depending on the presence of ditches, slopes and slopes of the grass);
d) to determine how to cut with the trimmer:
in folds, if the area is flat with flat grass (so that there are fewer transitions);
with the transition back to a clean place, when mowing lodged grass (its slope should be directed forward);
mowing across a large slope (it is much easier to cut across a slope with the trimmer than going up and down a slope).

2. We put a metal knife: weed or hay. Protection, i.E. Knife guard, mandatory (no additional protection for the trimmer head)
to mow with a trimmer, you need to assemble in order: a drive chuck, a metal knife (you need to put it without skewing), a support cup, a mounting flange and screw on a nut (left thread);
insert the locking pin and turn the metal knife to lock the output shaft of the Husqvarna gearbox;
tighten the nut with a wrench with a force of 3 5 kg / m;

4. When cutting with a trimmer with a metal knife, you need to set:
speed of movement of the knife, depending on the unevenness (to mow with the trimmer cleaner and faster);
working grip of the disc: between 8 and 12 o’clock (when the knife moves to the left);
reverse (can be working, cleaning or idle);
gas (by load);
on level: knife tilt angle and mowing width (more);
cutting height (to make it easier to cut with a trimmer or to make it cleaner);
where to move (along the ditch, along the slope of the grass, along the site);

Move the fuel and bag as you go;
if the grass has fallen: you need to move the steering wheel forward and mow to the left with an inclination of the handles to the left (sector

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11 o’clock) and to the right with an inclination of the handles to the right (sector

1 hour), and take your time. To mow with a trimmer cleanly and not to dig the ground;
while working (and turning), do not forget to look around !:
1.To notice the gestures of others, turn off the engine and remove the headphones,
2. So that children, animals, spectators and assistants do not come closer than 15 m. When a metal knife collides with a stationary object in the grass, the trimmer or lawn mower (lawn mower) can be thrown to the side or turned back, and the maximum speed of the metal knife is 10,500 rpm. And he is able to cut off an arm or a leg,
and also, when mowing with a trimmer, various objects (rubble, glass, debris) can fly out and ricochet out from under the metal knife.

How to mow with a trimmer correctly (more about mowing technique).

The engine speed when mowing with a trimmer is set depending on the load on the engine, the thicker the grass and, naturally, the heavier the engine, the more boldly you need to open the hole (the throttle valve in the carburetor diffuser).
Try to keep the engine running speed constant while cutting with the trimmer (slightly above average). or less gas only depending on the total engine load. It is not necessary to completely release the throttle (and immediately accelerate again) with each sweep of the streamer. So the clutch does not burn for long, and the edges on the drive shaft can overtake, and the overall wear of the trimmer (lawn mowers) increases sharply.

We find out the parameters of the site before mowing with the trimmer:
(to know which knives to take, how much fuel and time you need)

The density of the grass;
the hardness of the grass;
lodging of the grass;
weaving grass;
(the height and thickness of the grass are not important)
plot boundaries;
what irregularities (how to enter);
the presence of hidden obstacles (remember)
what not to cut (bushes, flowers, seedlings).

Bicycle garage (drawings). Arrangement of stairs on wooden stringers (visual sketches)

Installing a diamond blade

This operation outwardly does not differ from the fastening of a typical disk, except that even more attention, accuracy and thorough control is required.

Remove the spool with the line, blocking the gearbox shaft with a special pin or a screwdriver of a suitable diameter, rotating the line container counterclockwise.

We measure the diamond disc against the lower spline washer and make sure that its bore is larger than the diameter of the seating collar on the washer. At high rpm, the saw blade can move, imbalance can occur, which will inevitably lead to tool breakage and even injury to the operator or people nearby.

How To Put The Disc On The Trimmer

We try on the compensating washers one by one and choose the one that fits the width and completely selects the gap between the saw blade seat and the centering shoulder of the lower washer.

We install alternately on the gearbox shaft the lower washer with a compensation ring, a diamond disc, an upper washer and a protective cup, which still partially redistributes the pressing force over a large area.

We tighten the entire resulting package on the gearbox shaft with a nut with a left-hand thread, first by hand, and then with a socket wrench, blocking the gearbox shaft from below using a suitable screwdriver.

We remove the protective split plastic tube from the teeth and once again check the strength of the saw blade on the gearbox shaft. If it turned out to be reliable, then the trimmer, with the installed diamond disc, is completely ready, both for traditional and not intended for this tool, work.

Test in practice

For safety, you must wear a protective helmet with a transparent visor to protect your face, gloves on your hands.

First, we try to remove thin dry branches, gradually moving to larger ones, and end the testing by cutting down dry and semi-dry tree trunks with a diameter of 7-8 cm.

Make sure the diamond blade trimmer works efficiently, reliably and safely. Sections, both transverse and oblique, are very smooth. They do not show crumpled and torn wood fibers.

Mowing grass with a diamond blade is also quite comfortable, efficient and productive, regardless of its height, density and degree of dryness.

So, a trimmer with a saw blade not only perfectly fulfills its direct functions (mowing grass), but also expands the field of application (removing twigs and branches from trees, and cutting thin trunks).

Attention! Do not get carried away by installing large diameter and thick saw blades on the trimmer, as this will cause an increase in the load on the gearbox and motor, and possible premature failure. Also, the safety of work with such a tool will decrease, which should not be allowed in any case.

How to attach a saw blade to a trimmer

The main working bodies of any trimmer are a line spool or a special disc (plastic or metal). With a plastic knife, like a fishing line, you can mow green herbaceous plants, dry metal grass, reeds and even shrubs. Is it possible to increase the functionality of the trimmer by installing a saw blade on it?


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