Mining industry HS code analysis

List of catalogs of this article:

• 1、How to maintain motorcycles daily
• 3,Mining industry HS code analysis How to maintain the motorcycle engine?

How to drive and maintain a motorcycle?

1. When the motorcycle is just starting, it is best not to press the button for more than 5 seconds. If it cannot be started several times in a row, the fuel supply system, ignition system and start-up system should be checked. In addition, it should be noted that if the motorcycle startsIt's difficult. The headlights are dimmed, and the horn is not as loud as before, indicating that the battery is not enough. Remember to charge it in time.

2. When the motorcycle is driving, when the engine power is insufficient (such as uphill) or there are obstacles on the road, the low gear should be changed in time. The essentials of the operation of changing from high-end to low gear are: first close the small accelerator, reduce the speed, quickly grip the clutch handle, change to the required gear, and then gradually relax the clutch handle and increase the accelerator at the same time.

3. When using a new car, you should avoid severe wear and tear, do not drive on informal highways; do not speed or overload. Check at any time while driving. If the engine temperature is too high, stop immediately to dissipate heat. Check the tightness of the screws of each machine part in time and make appropriate adjustments.

4. How to maintain the motorcycle during normal driving period: oil replacement cycle: if semi-synthetic oil is used, the replacement cycle is generally 3,000 kilometers.It's okay to run to 4,000 kilometers, but in order to ensure the longevity of the engine, I suggest changing the oil at 3,000 kilometers, and inject about 100 ml of residual oil into the exhaust cylinder each time the oil is changed.

How to maintain motorcycles daily

1,, use special wheel attendants With a spark plug sleeve, tighten the spark plug to the specified tightening torque.Maintenance of air filter Air filter is the respiratory system of motorcycles.

2. Chain maintenance: Check the condition of the chain every 500 kilometers to see if it is loose and lacks oil. Disassemble the chain every 5,000 kilometers, clean it, and then oil it for maintenance.

3. Gasoline: When refueling, try to refuel the local three barrels of oil. In terms of gasoline selection, it is recommended to choose No. 93 gasoline with carbon removal. Don't wait until the gasoline is completely out of refueling, because the engine stops due to lack of fuel, which is very harmful to the engine.

How to maintain the motorcycle engine?

1. Spark plug maintenance Spark plugs are the key parts of motorcycle engines. The normal combustion of the mixed gas is the key to the normal operation of the engine.Note: Determine the thread size and the length of the plug rod. If the plug rod is too short, it will cause carbon accumulation and damage to the engine in the thread of the plug hole.

2. Remove the engine oil and clean the engine (the purpose of cleaning the engine this time is not to clean the residue in the car, but to replace the oil of other brands and models, because the mixture of two different brands and models of oil will produce sediment that is not good for the engine).

3. These maintenances are relatively complicated and tedious, but under normal use, there is not much maintenance required, mainly to change the oil regularly. Other things that need regular maintenance are mainly cleaning or replacing the air filter.

4. In order to adapt to multiple speeds, change the speed from time to time and avoid full-on throttle operation. EngineThe oil needs to be changed once within 300 kilometers, and the motorcycle-specific oil should be changed once every 1,000~2000 kilometers in the future.

5. Maintenance of the air intake system The intake system of modern motorcycle electric injection system is mainly composed of air flow meters or absolute pressure sensors and intake temperature sensors, etc., which are all precision electronic control components. In use, as long as it works under clean conditions, technical failures will not occur in general.