How to unscrew the lawnmower blade bolt. Step-by-step instructions for unscrewing the bolt

How to unscrew the lawnmower blade bolt

Lawn mower greatly simplifies the care of the lawn. The tool neatly mows the grass at a uniform distance from the ground, leaving behind a neat, well-groomed surface. Garden equipment has a complicated structure. The cutting mechanism is directly responsible for cutting the vegetation. Lawn mowers are usually equipped with blades. This is an expendable element, which in the process of work is blunted, damaged, broken. In order to restore full functionality to the tool, you must first familiarize yourself with how to remove the blade from a lawn mower.

The main function of lawn mower blades is cutting the grass. In a single work cycle the tool can cut a large area and remove an average of 10 kg of grass. Some models are equipped with a mulching mechanism. These tools have additional blades that are designed to shred the cut vegetation. Lawn mower blade elements have a specific design. Their blades create an upward pull that carries the cuttings into the grass catcher box.

There are such requirements for lawn mower blades:

The torches are made of high-quality stainless steel with a Rockwell hardness of at least 55. If this value is lower, the blade will blunt quickly, especially when cutting shrubs and weeds. To protect the elements from corrosion, steel is improved with special additives (chromium, zinc). This gives the blades resistance to rust. If the part is not protected, it will have a brown deposit on the surface after the first use.

How to change the blade on a lawn mower

Blades of electric, gasoline-powered equipment require periodic inspection, disassembly for sharpening, replacement if damaged. It can be done by yourself, all you need to know is the sequence of steps. For a simple repair of the mower will need to do the following:

  • Switch off the engine, unscrew the spark plug or disconnect the battery. This will eliminate the sudden start-up of the drive, ensure safe inspection and replacement of the blade;
  • blades are inspected with an empty fuel tank. This is done by draining the residue with a hose and hand pump;
  • Lift up the housing of the machine to inspect the blade. It is important to make sure that the oil does not spill. Therefore it is better to tilt the housing towards the handle and prop it up or have someone support the mower in this position;
  • Note the position of the blade before disassembly for proper installation of the new one. Make a note of the threads. The instruction manual will be an aid to replacement;
  • Unscrew 2 fixing nuts with a wrench of suitable size, remove the cutting element, install the sharp blade as specified by the manufacturer or according to the markings made, tighten the nuts according to the recommendations in the technical documentation. The main thing is not to overtighten the fasteners or tear the threads.
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Change blades with thick gloves to prevent injury. It is also recommended that you use a small block to prevent the blade from spinning when reinstalling. It is placed between the blade and the mower body to prevent the cutting element from suddenly turning.

REMOVING lawnmower blade (NOT a reverse thread typically)

If the blade replacement is done according to recommendations, with safety in mind, the process takes minutes.

Result. mower is running in normal mode, not dangerous for the owner and others.

Gardening machinery repair and maintenance.

Specialized Service Center “Agrotehservis”. Warranty and post-warranty service of world manufacturers! Attention! User information!

Step 1

  • Turn the mower on its side so the air filter is on top.
  • For a lawn mower with a seat (rider), use a jack or remove the cutting deck to gain access to the blade.

Blunt blade

Signs: poor cutting of grass. Grass cut ends are chopped, thread-shaped ends are yellow after mowing.

Troubleshooting: turn the mower over and sharpen the blade. If there are any dull spots on the blade or it is blunt, you should unscrew the nut and remove the blade. It’s easier and quicker to sharpen it. Often the nut becomes hard and unscrewing it becomes difficult. In this case drop some WD-40 or rust remover and wait for 15-20 minutes. Try again. For the convenience of unscrewing you can create a stop for the knife: in the plastic bottom there are holes into which you can insert a screwdriver, it will serve as a stop.

The next stage of lawnmower maintenance: cleaning

Quality lawnmower care is not possible without the elementary cleaning of the deck and the engine from the grass.

Getting rid of the deck of vegetation

The grass itself has an incredible corrosive effect on the unit, so you should periodically clean the DEKO. It is important to understand that the wet lawn can not be mowed in any case, because then the negative impact will increase in 2 times.

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Dry vegetation itself will fall away from the object, and it will be possible to clean it as well as possible with the help of an air compressor or blower. Some models are equipped with a special flushing connection, saving the user from additional hassle.

Getting rid of vegetation from the motor

Since mower engines are air-cooled, the entire system will only work properly if the ribs are not contaminated. Otherwise, you should expect overheating of the device and its rapid failure.

The ribs can be cleaned by removing additional engine parts and using compressed air. Perfectly suitable even a soft small brush, which in this case will demonstrate excellent efficiency.

What you need to know for making a lawn mower from a washing machine

At first glance, the lawnmower with their own hands from a washing machine looks a certain absurdity, but in fact it is quite a real way to get a tireless assistant for the care of the site.

It turns out that it is possible to make such a useful design, taking a washing machine motor, which is reliable, designed for prolonged operation and significant loads.

In addition, the washing machine has drive belts and two pulleys. The 1700 rpm motor from an old washing machine only needs to be mounted on the frame. Then connect the knives to the shaft. There are no problems with the installation of asynchronous motors of washing machines.

But even a motor with less power than a washing machine, for example, 500 watts is perfect for making a homemade design. It all depends on what size you want to have. The greater this value, the more power a motor is needed.

The wheels needed to move the lawnmower from a washing machine can be “borrowed” from an old baby baby carriage, as well as a handle to help push the device and serve as the basis for attaching a wire. Underneath, t.ะต. On the side opposite to that where the motor is attached, the knife is attached.

It is put on the motor shaft, using a flange, which is not difficult to turn on a lathe. The flange is attached to the shaft with three bolts. You will also need pipes for plumbing and steel corners.

The design from a washing machine has almost no disadvantages: there is no smell of gasoline, there is no noise and exhaust fumes, the start is quite smooth, as well as maintaining the revolutions. But the main thing is the minimum number of parts and compact construction from the end-of-life machine.

The disadvantages of the device from the washing machine include only that not enough travel, which is limited by the length of the cable.

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How to unscrew a hexagon bolt with ripped faces

The choice of method depends on the location of the fastener and the effort to tighten it.

It is recommended to try the following techniques:

  • reduce the gap between the key and the bolt with a flat screwdriver. insert it between the faces and horns of the tool;
  • Cut a groove in the head for a screwdriver;
  • use extractors;
  • Use special wrenches Super Lock;
  • Use a spline bit.
  • Tap on the head to loosen the clamp;
  • Heat it with a gas burner;
  • weld new nuts.

12-beam spline bit

The universal and most reliable method. use extractors, the technology described above.

Choose which string

polyethylene thread thickness depends on the technology model and varies from 1.2 to 4 mm. It can be:

  • with a round section. this is the strongest material for mowing grassy plants;
  • with shaped section. used for mowing soft plants;
  • Twisted. used for fine grass;
  • professional, not suitable for all technology models.
unscrew, lawnmower, blade, bolt

To change the line for the trimmer on the lawnmower, you need to buy a cutting line. which is ideal for a particular type of mower.

You can soak the thread in a basin of water for a few minutes to increase elasticity and strength.

How to set the blade

Once the blade has been sharpened, it must be put back in place. Installing the cutting elements is not very difficult. The main thing is to follow the rules:

unscrew, lawnmower, blade, bolt
  • Determine what position the blade was in before.
  • In the same position, secure it with the new or old bolt, washer and nut.
  • Do not over tighten the nuts. This will deform the cutterbar.
  • You should wear thick gloves on your hands while working. It is important to remember that the renewed blades are sharp.
  • Once the mower is on the ground in its normal position, do not turn it on immediately. You have to wait one hour to allow the oil to drain out of the sump.

Mower Blade Bolt Stuck

Even a gardening novice can work out the tricks of the trade to remove the cutting element from the lawnmower. However, when sharpening yourself, you must be extremely careful not to hurt yourself and not to remove too much metal, thinning the knife.