2 Stroke Gasoline Engine Power String Trimmer Petrol Brush Cutter

During the use of a lawn mower, various problems may arise, and there are different solutions to each problem. We need to prescribe the right medicine to avoid major problems. Today, we will talk about the reasons that cause the lawn mower to pull the cylinder, the causes of violent noises when starting and stopping, and the reasons why the lawn mower shakes or vibrates violently during operation.

What are the common causes of cylinder pulling in irrigation machines?

Pulling the cylinder can be said to be a common and major malfunction of the engine of a cutting machine. There are many reasons that can cause this malfunction, and the most important one should be engine oil. It is necessary to maintain the purity and moderation of the engine oil in order for the piston to move smoothly in the cylinder under the lubrication of the engine oil. Dirty, excessive, or insufficient engine oil can cause poor lubrication and cylinder pulling. Checking the engine oil before use is particularly important for cutting machines.

Fault manifestations:

The contact surface between the crankshaft and connecting rod is stuck, and there are signs of tension on the contact surface between the connecting rod and the crankshaft.

Cause of malfunction:

Not adding lubricating oil (gasoline engine oil), or adding lubricating oil but not in place, or adding lubricating oil but not in place but the machine is used at an improper angle, resulting in oil splashing and the wheel not coming into contact with the oil, causing the contact surface between the crankshaft and connecting rod to have no lubricating oil or a lack of lubricating oil, which leads to a lack of lubrication and cooling. Normally, at the rated working speed, within a few minutes, the crankshaft and connecting rod may bite due to the above reasons, causing the connecting rod to break and crack the cylinder block.

In addition, adding counterfeit and inferior engine oil can also cause the above-mentioned problems.

Analysis basis:

1. All internal combustion engines, crankshaft and connecting rod jamming (or locking) is caused by a lack of oil;

2. Sometimes, if the oil stored in the damaged machine by the user has no signs of debris, it indicates that there is no oil during operation or the amount of oil is too low for the splash wheel to reach, or the oil in the machine was added after an accident, and the oil added after the accident did not participate in lubrication, so it is still clear and free of debris (the oil is gray black);

3. There is also a situation where, although there is enough oil, using a slope greater than 25 degrees can cause oil splashing and the wheels cannot reach the oil, resulting in the above-mentioned faults or other component pulling (or locking), accelerated wear and tear.

Why is there a loud noise when starting and stopping the irrigation machine?

The cause of the above malfunction is that the bolt in the center of the blade is not tightened. If the engine malfunctions, the bolts should be unscrewed, the coupling should be removed, checked for damage, and then the coupling and blade should be reinstalled, and the bolts tightened.

What is the reason for the shaking or violent vibration of the lawn mower during operation?

If the lawn mower experiences shaking or severe vibration during operation, it may be due to hitting some hard objects during the mowing process, causing the blade to curl and deform, which can cause the lawn mower to vibrate. In addition, grinding the blade into a top heavy and bottom light condition can also cause the lawn mower to shake. Therefore, it is necessary to grind the blades of the lawn mower to a horizontal state on both sides. During use, attention should be paid to the condition of the lawn and hard objects should be avoided as much as possible.

Pulling the cylinder of a lawn mower is one of the common malfunctions encountered by lawn mowers. It is recommended to hire professional maintenance personnel to inspect and repair each lawn mower before the first mowing, in order to be proactive. The main maintenance items include cleaning the carburetor, cleaning the carbon deposits in the combustion chamber, checking whether the high-voltage circuit is unobstructed, and whether the gearbox is working properly