The quick couplings series can connect and disconnect in tube system quick, operation safely and reliable,many material and application for choose. Widely used in aviation, aerospace, automobiles, vessels, metallurgy, energy, petrochemicals, medical appliance, heavy machinery and other industrial fluid systems. There are ISO standard series, liquid cooling series, Customization Series and foreign trade series. Flat-faced poppet configuration ensure there is only little air inclusion when the valves coupling. The coupling body have standard high resistant carbon steel with zinc plating .Available seal optiongs have NBR,AU, FKM and EPDM ,etc.
Air Hose Quick Release Coupling,Quick Disconnect Hose Coupling,Quick Release Hydraulic Couplings,As1709 Series Quick Couplings XINXIANG PINGYUAN AVIATION HYDRAULIC EQUIPMENTS CO.,LTD , https://www.coupling.pl
Engine oil is the first place in maintenance. It is important to choose the right oil and the amount of oil added.
2, air filter
Air filter is the lung of an athlete for a good car. So using a clean air filter is a must. If the air filter is damaged, dust and sand will enter the cylinder through the carburetor (the same is true for EFI). Wear rings and valves, if blocked, can cause insufficient power and increase fuel consumption. The increase in fuel consumption will inevitably lead to high-speed exhaust smoke. After a long period of gas accumulation, the durability of the car, the power will be discounted.
3, tires
The maintenance of daily tires is to clean and keep the tread clean. Do not put stones in the pattern. The most important thing is that the tires can't be filled with water wax or oil. Because the oil has affinity for rubber, it will cause the tire to crack and deteriorate. Self-safe, because the motorcycle is pressed to achieve the cornering, the tire is the most important. 
4, the fuel tank
Domestic gasoline has a lot of impurities. If you have time, you can remove the fuel tank once a year. Remove the oil switch, pour off the bottom rust, then dry the tank and reinstall it.
5, carburetor
Same as above, the carburetor has been used for a long time, and some impurities will be accumulated inside. The oil drain screw under the carburetor can be loosened to make the impurities flow off with the gasoline. If the carburetor leaks oil, it must be repaired and replaced in time. Once the carburetor leaks oil, the gasoline will leak into the tank. If you push, the gasoline will leak into the crankcase and dilute the oil. If you just like to pull the high, then your car is not far from scrapping. This is why the basic carburet has a common car. The reason for calling a garbage truck.
6, the battery
It is best to recharge the battery once every six months. Turn off the headlights before each time you hit the car. Do your best.
7, shock absorption
The front shock absorber is basically a shock absorber oil for 1 year. The shock absorber oil can use the shock absorption oil of the famous factory car, and the effect is very good. Also, the quality of the domestic oil seals is still not very good, don't be cheap, and it is easy to leak oil after driving a few times. At the same time as changing the oil seal, it is necessary to change the oil again, which is time consuming and laborious. Although the original oil seal is expensive, it eliminates a lot of unnecessary troubles and is the most cost-effective in the long run. If the rear shock absorber leaks oil, replace the oil seal when the core is not spent, but once the core is spent, only the assembly can be replaced.
8, the valve
This is amazing, how to maintain the valve? The answer is yes, many cars need to adjust the valve clearance in the rated kilometers. The original maintenance manual is marked on the manual. However, most of the maintenance masters will not adjust or are too troublesome to adjust, which requires the rider to find the right technician to adjust the valve clearance. If some riders in remote areas do not have the conditions to adjust, it is important to pay attention to not frequently driving in the limit state during the use of the car.
9, spark plug and ignition line
I think that if you care about the ignition line and have a budget, it is necessary to invest in several modified high voltage lines and a set of sheet metal spark plugs. If you have a big budget, a set of imported high-voltage lines is indispensable. If you like the price/performance ratio, don't change it when it is not necessary to replace it. Then, the car in the starting performance, the ignition performance in the humid environment such as rain, fuel economy, it will be much more ideal. The throttle response will be more sensitive.
10, the chain of the tooth plate
Generally speaking, it is only primitive to maintain the oil with dripping oil and other oils. Because these oils can easily make the chain stained with dirt and dust, it will intensify the wear and tear, and it will splash everywhere. Yes, very indecent. The correct way is: spray the chain oil. There are two types of chain oils, one is similar to ordinary oils, but it is relatively sticky. The other type is like a white powder that won't splash. Of course, the second is the best. Chain oil only needs to be sprayed with a thin layer, it can be maintained for more than a thousand kilometers, it is also very cheap, and the shelf life is basically very long, regardless of storage problems. This way you can buy the car's sprocket chain for years without worrying.
11, brake pads
As long as the brake pads are used more than 2/3, they must be replaced. Can't wait until the basic polishing or all the grinding is done. The first is the safety problem. Because the brake pad has 3 parts left, the heat of the brake is quickly transmitted to the substrate of the brake pad, which is easy to cause the brake friction material to fall off. Caused an accident. The second is the wear on the brake disc. As we all know, the brake disc is very expensive. To save the brake pads and lose expensive brake discs, it is definitely not worth the candle. Also, if there is an opportunity, there are conditions to change the brake steel throat, which will definitely improve safety and improve the brake feel.
12, the circuit
Maintenance of the circuit, the line of the general circuit should not be cut. Also, don't just add appliances to the car and increase the burden on the car. Light bulbs such as turn signals and brake lights are now available for sale. Can be replaced by LED. On the one hand, it reduces the burden on the circuit, on the other hand, it also saves valuable power.
13, waterway
For water-cooled cars, it is best to use genuine antifreeze. First, the waterway is not easy to cause problems, and the second is that the cylinder will not freeze and crack in the cold area. If the water in your car's water tank is **, then you must step up the cleaning waterway. All major auto parts cities have water tank cleaners. Please ask for any brand and model.
14, gasoline
The compression ratio of basic large displacement multi-cylinder vehicles is generally high, and it is recommended to use higher-grade gasoline. If there is no high standard of gasoline, it is ok to buy a fuel additive with a high octane rating from a large manufacturer. There is no problem with the use, but the horsepower of the vehicle may be slightly reduced, but this is the best known solution.
How much do you know about motorcycle "big health care"?
1, engine oil