How to repair the mower with your hands?

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Those who have land very familiar to what weed.

Especially when it often rains and the grass grows by leaps and bounds. Previously, and sometimes now, this problem is solved with the help of good old spit.

But technology does not stand still and now in this business to help such assistants as electric and petrol mowers.

Gasoline mower has several important advantages over electrical, such as mobility and there is no danger of electric shock. But there are many disadvantages, such as high price, a lot of noise, expensive fuel and considerable weight.

facelifted mower
Fig. 1. facelifted mower

Electric mowers are cheaper, easier to operate on inexpensive energy, and are not difficult to maintain and repair. These advantages and become the main reason for their great popularity among the customers of this type of technology.

But despite the relatively good quality, improper use and a big load can bring the device out of operation. In such cases, do not just carry the machine to a repair shop, and try to find and eliminate the cause of the damage yourself. Moreover, as mentioned above, electric mowers do not have so much as petrol units and parts.

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The main thing to have some of the tools and confidence. In this article I will just show you how to do the repair mower with your hands.

Lawn Mowers company AL-KO
Fig. 2. Lawn Mowers company AL-KO

For example taken mower AL-KO company, which has had serious problems in the work, namely stopping the engine with no load and strong overheating. Motor stops buzzing and start it again, only helps the repeated pressing "START" button. Restart button has to almost every 30 seconds, and if further work and more.

Of course, so you can work, but it is very annoying and gives the feeling that somewhere the problem.
Therefore I wanted to find out where?

After working mower for one hour, was measured engine temperature. To him it was a finger touch can not. He just radiated heat. If you continue to ignore and continue to work on such a mower, inevitably fails motor.

It is necessary to determine the cause of the motor overheating. To do this, remove the top cover of the housing, under which is a motor and its supply chain.

Remove the top cover
Fig. 3. Remove the top cover

The cover is held in the six screws with a Phillips screwdriver under the cap.

Unscrew the screws and remove the cover - up movement.

Removing the cover
Fig. 4. Removing the cover

After removing it, you can see the impeller, a capacitor, two connectors and the motor itself.

At first glance invisible no particular problems. The temperature slightly darkened the motor winding, but so far it is not critical.

Wheel, condenser, two connectors and the motor itself
Fig. 5. Wheel, condenser, two connectors and the motor itself

To more closely examine the capacitor, it is necessary to unscrew the mounting and pull it out.

We take out the capacitor
Fig. 6. We take out the capacitor

Condenser some external damage not revealed.

Capacitor mower
Fig. 6.1. Capacitor mower

To check it out, you need to disconnect the capacitor and for a short time to apply power to the motor. If it does not start and began to hoot - intact capacitor means, because the engine was started with him. Turning off the power connector and connected back to the tank circuit of the engine.

Next, try to rotate the impeller. She pushed onto the rotor shaft and rotates fairly tightly.

We turn the impeller
Fig. 7. We turn the impeller

And the reason for such heavy rotation, a mechanical brake, which for safety, stops the rotation of the motor when power is off.

It is similar to a sleeve which is free to move downward on the rotor axis.

When a voltage is not supplied to the motor, this sleeve is pressed against the upper part of the cover on which the two rubber strips glued. Thus, there is inhibition of the knife mounted on the rotor shaft.

When power is applied, brake sleeve by the magnetic field of the rotor is drawn toward the center and provides a free wheeling.

mechanical brake
Fig. 8. mechanical brake

Upon closer examination, this sleeve with brake has been observed that at the time of starting the engine, the brake retracts and allows the shaft to rotate freely, but after 2-3 seconds is released again and begins to slow down motor. This should not be. Hence, the knife stops during operation and the engine to overheat.

To find out the reason for such work, it is necessary to remove and disassemble the engine.

To do this, disconnect the connectors and place the device on its side to get to the clamping screw. Access to the knife closes with fasteners.

, You must first unscrew the bolt cutter to remove it (see Fig. figure below).

Turn off the blade bolt
Fig. 9. Turn off the blade bolt

It becomes the key to nineteen.

The direction of rotation as a conventional bolt, rather than left-handed. That is, it should be unscrewed anti-clockwise and clockwise twist.

Plastic bolt head, so using a key, it should be a good stick, so as not to "lick" the brink.

After removing the bolt is removed and the plastic knife disc.

remove the knife
Fig. 10. remove the knife
Figure 11
Figure 11

Below that is a hub height. It can be used to lower slightly the knife.

Adjustment is made washers, planted under the collar (see. figures below).

regulirovka-1
Fig. 12
Fig. 13
Fig. 13
Fig. 14
Fig. 14

All the shooting, there is only the motor shaft and hex screws of its fastening.

Key to these bolts has a distance between the faces 6 mm. Unscrew them counterclockwise. Removing the last screw, with one hand, adhere to the engine.

The motor shaft
Fig. 15. the motor shaft. unscrew the bolts

Next, put the mower on its wheels, and clasping his hands engine - it raises.

Fig. 16.
Fig. 16.
motor mowers
Fig. 16. motor mowers
motor mowers
Fig. 17. motor mowers

To disassemble the motor, it is necessary to release tightening studs. Turn off all of them.

Dismantle the lawnmower engine
Fig. 18. Dismantle the lawnmower engine

Remove impeller with two screwdrivers.

I removed the impeller
Fig. 19. I removed the impeller

Proceed to remove the back cover. This will help a piece of wood and a hammer.

But first you need something sharp to mark the position of the covers in relation to the motor housing.

Marking covers provisions
Fig. 20. Marking covers provisions

We put the engine on its side and hit with a hammer through a wooden strip, on the rear shaft.

Hit by the rear shaft
Fig. 21. Hit by the rear shaft

Motor at this point is to keep the other person.

We hit until the moment when the axis is not completely released from the bearing.

motor mowers
Fig. 22
Shaft motor mowers
Fig. 23
Fig. 24
Fig. 24

Still it is possible to lift the engine and hit the shaft vertically on a wooden plank. Such a method is also possible to remove the shaft from the bearing.

If the shaft is released, remove the lid, the brake hub and the two brackets in it with a screwdriver.

Remove the screwdriver 2 clamps
Fig. 25. Remove the screwdriver 2 clamps
bushing brake
Fig. 26. bushing brake

Now, when the brake elements are removed, install the rear cover. We are looking for the previously set mark, and combines them.

Brake parts removed
Fig. 27. Brake parts removed
Set back cover back
Fig. 28. Set back cover back

Threaded connector with wires in the cut-out cover.

Next, attach the lens cap with the bearing on the shaft and tapping on it from all sides, we achieve the complete installation.
Beat on the lid should not be hard to not cracked brittle aluminum. Therefore, bumps must be applied through tree or rubber.

We put on the cover with the bearing
Fig. 29. We put on the cover with the bearing

When the cover with the bearing tightly "village", spin tightening studs. Clamping should be gradually diagonally. Thus we achieve maximum engine speed lightness.

Twist-tightening pins
Fig. 30. Twist-tightening pins

Further, push-fit on the impeller rotor. With the help engine is cooled during operation.

Nasazhivajut impeller on the rotor
Fig. 31. Nasazhivajut impeller on the rotor

At first the impeller put on his hands, and after lightly tapping the center of the hammer. Too deep "to plant" item and should not be, otherwise it will cling to the engine cover.

Now drop the engine in the seat.

Lowered engine seat
Fig. 32. Lowered engine seat

Connect the connectors of the motor and capacitor. It is important not to confuse a plug where. Otherwise the engine will not work correctly. Therefore, when all the dismantling should be signed and take pictures.

plugs
Fig. 33. plugs

Next, you need to fix the motor. To do this, put the mower on its side, and holding the motor for the impeller, combine the bolt holes.

Tightening all four screws, booster of an Allen key. It should be done also on the diagonal.

Twist-bolts
Fig. 34. Twist-bolts

After that, the next item on the skewer shaft.

skewer detail
Fig. 35. skewer detail

It set the foundation for the knife and the knife itself.

The knife should be set up bends. They need to push the grass clippings back into the container.

Set knife back
Fig. 36. Set knife back

This entire structure is clamped with bolt plastic head. We try to rotate the blade by hand. It should move without rubbing and scratches.

Hold the bolt
Fig. 37. Hold the bolt

Now we put the machine on its wheels, and install a protective cover. Fasten it with the screws.

Install protective cover
Fig. 38. Install protective cover

Turn on the engine and listen to his work. At the same time there should be no extraneous sounds, and only a slight rustling of the knife.

Finally, check the mower on a patch of grass.

Lawn mower is OK!
Fig. 39. Lawn mower is OK!

As can be seen, the machine does its job without tripping and braking. Now we can not fear that the engine will overheat, and will come out standing.

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