Malfunction Of The Carburetor Trimmer

6th August 2020

Can lawn mowers repair themselves? Lawn mowers are repaired in specialized workshops. You can fix minor faults with your own hands after studying the maintenance instructions, following the recommendations.

Repair and lubrication of the lawn mowers gearbox

The role of the gearbox is to transfer the torque from the motor shaft to the cutting tool through 2 gears with different numbers of teeth. The torque is transmitted at an angle of 30 0. The number of revolutions of the lower cutting blade is 1.4 times less than the engine speed. Gears must be clean and lubricated. To supply oil to the teeth, there is a hole under the screw on top.

First, the place where the plug closes the hole should be cleared of soil and grass. Unscrew the plug with a suitable tool, it is included with the saw. We use a grease tube. Either a native lubricant from the manufacturer is selected, or well-known high-quality compounds, such as Oleo-Mas, Litol.24, Azmol 158. We open the protective layer of the tube and lay the instrument on its side. Slowly rotating the knife, squeeze the grease into the gear housing. The gears, turning, carry the composition with teeth over the entire surface. You can also pour grease with a special syringe.

Too little or too much lubricant can cause the gear unit to heat up. An audible knock and backlash indicate a broken bearing or dirt from a damaged boot. Bearings must be replaced using a puller, without using the heating method.

If the gearbox staggers and runs on the rod, it is necessary to replace the housing, or temporarily tighten the knot with a clamp to secure it to the pipe. If the knife stops rotating, it means that the gears do not engage. The teeth are worn out or crumbled. A pair will need to be replaced with a complete disassembly of the assembly.

When replacing the gearbox, it is necessary to select a new unit, guided by:

Pipe diameter;
The diameter of the drive shaft;
Section of the drive shaft;
Method of fastening protection

Lawn mowers malfunctions and how to fix them

Any type of lawn mower has a hollow rod, in which a connecting cable is placed between the motor shaft and the lower gearbox, which transfers rotation to the working body with the cutting tool. In the upper part there is a carburetor and a motor, at the bottom. A gearbox and a working tool, covered with a casing. In the middle part there is a transverse handle in which the control buttons are located. To unload the arms, there is an unloading belt that holds the bar with the operator’s torso.

They follow this, the repair of lawn mowers is to troubleshoot;

The engine does not start;
The cutting mechanism is not picking up speed;
The engine stalls;
The reducer is heated;
Extraneous knocking is heard, strong vibration of the bar.

Before eliminating the malfunction, you need to diagnose, determine the non-working unit.

It is important to know the lubrication points of the tool. Constant care, cleaning the device after work will extend its life. Before work, it is necessary to tighten the fastening bolts, prepare the fuel and fill the tank.

Can lawn mowers repair themselves?

At first glance, a simple device for mowing grass with a two-stroke engine is fine-tuned. Repair of lawn mowers must be entrusted to a specialist or to study the technique yourself, using the operating instructions. The streamer maintenance is essential. Gearbox lubrication, line replacement, and teeth sharpening can be done on our own.

Problem 4: wear of the button-bubble for manual fuel priming

Step 20

Install the main membrane.

Problem 1: Clogged holes, channels and nozzles with dirt

The first thing that happens is that the holes and jets in the fuel supply system are clogged with dirt. Filters installed in the tank and directly in the carburetor do not help. They do allow small particles to pass through, which will cause lawn mowers to fail.

Step 6

There is another gasket under the membrane. We also carefully remove it, without damaging it in any way.

Step 11

Another particle of dirt can get stuck under the needle. See photo. This will also cause lawn mowers to fail.

Do-it-yourself lawn mowers carburetor adjustment

Lawn mowers, like all gas powered garden tools, are not difficult to maintain. It is possible and necessary to repair, configure yourself. For example, adjusting the carburetor of a lawn mower with your own hands is a matter of five minutes.

A lawn mower carburetor is a unit in the power system. In it, like any carburetor, there is a process of mixing air and fuel (gasoline) for further supply to the engine cylinders.

The main problems and malfunctions of the carburetor.

Mesh filter. There are often only two problems with this element:

Blockage.
Breaking.

In order to find out the cause of the breakdown, the fuel filter cap is unscrewed to remove the strainer. If dirt just accumulates on it, then flushing in gasoline or blowing will help.

If there is visible damage to the mesh filter, it is imperative to install a new one. There may also be damage to the fuel supply pipe (during repair, they practice checking this element).

The carburetor starter in most cases does not function due to blockages. Use acetone or the same gasoline for flushing.

Blowing compressed air into clogged carburetor parts is an acceptable and convenient repair practice.

Lawn mowers carburetor device

The basis of the carburetor for lawn mowers is an aluminum body. It contains a diffuser (hole with internal contours). Air is blown through this hole. The flow rate of oxygen (air) depends on the cross-section (orifice) of the diffuser.

The diffuser is equipped with fuel channels. Fuel is drawn in from them using an air stream.

Outside the carburetor is installed: