How much does it cost to repair an off road 250 motorcycle

The cost of starting the belly will cost you about 50 yuan, and the cost of parts and maintenance (calibrating the crankshaft and grinding the valve) is about 120 yuan.

If the motorcycle cylinder is repaired in a professional repair shop, the replacement parts *** can be driven for more than two years under normal circumstances.

The main reasons for pulling cylinders on motorcycles are as follows:

Insufficient run-in:

The initial run-in of the engine is not sufficient, and the cylinder is pulled due to high-speed driving. Before the engine can really run as it wants, it is necessary to carry out a preliminary run-in on the mating surface and cut off the protruding spikes to make the surface smooth and evenly stressed. Therefore, a certain degree of running-in must be carried out after the new engine is assembled, and users should avoid long-term high-speed and rot-resistant operation during the initial 1000 2000km ride.

Cylinder pull caused by piston overheating:

When the piston is overheated, there is a local abnormal expansion. Due to the deformation of the piston, the piston ring and piston ring groove will briefly or even prolonged bite together, causing the piston ring to not work properly. At this time, the edge of the piston ring is directly in contact with the inner wall of the cylinder with extremely high pressure per unit area, so that the piston ring loses the effect of sealing the combustion gas, thus causing the cylinder to be pulled.

The piston ring clearance is not in line with Kaifushi, resulting in cylinder pulling;

When an engine is running, carbon deposits are inevitably created in its combustion chamber. When the carbon deposition in the groove of the piston ring gradually increases, it hinders the movement of the piston ring, exerts abnormal pressure on the piston ring, and makes the piston ring directly contact and friction with the inner wall of the cylinder, thus causing the cylinder to be pulled.

Millions of car purchase subsidies.

Hello, Suzuki GSX250R motorcycle engine cylinder maintenance needs 200 yuan of maintenance costs, Suzuki GSX250R motorcycle engine cylinder solution is mainly the need to replace the cylinder, piston, piston ring and other important components, plus labor costs to calculate almost 200 yuan. The so-called "pulling cylinder" refers to the inner wall of the cylinder is drawn into a deep groove, and the piston, piston ring and cylinder wall are rubbed against the sealing of the stove, resulting in the reduction of cylinder compression pressure and the loss of power

There are two methods of square dispersion to maintain the cylinder. One is to expand the cylinder, and the other is to change the cylinder. Whether it is expanding the cylinder or changing the cylinder, it takes a certain run-in period after the replacement, about 500 kilometers.

1.Cylinder expansion:

If the cylinder pulling problem is not too serious and the cylinder wall thickness can be processed, the cylinder will generally be expanded, and the piston and piston ring with larger size will be selected for repair.

2.Cylinder Replacement:

If the cylinder is serious, the machining allowance of the cylinder wall is out of tolerance, and the appropriate plug ring can not be selected, and the method of replacing the cylinder, plug and punching the ring is generally adopted.

3.Reasons for the failure of the pulling cylinder:

Motorcycle cylinder pulling refers to the phenomenon that the cylinder block and the piston are not smooth due to the lack of lubrication after the abnormal close contact. When this phenomenon occurs on a rotten motorcycle, not only will the power decrease, but also a serious oil combustion failure.

Millions of car purchase subsidies.