Valve adjustment of Yamaha Tian Jian 125 motorcycle: Adjust the air intake by 0.08 and the air exhaust by 0. 10 with a feeler gauge, and then start it normally. If there is idle speed, it will acceler

Valve adjustment of Yamaha Tian Jian 125 motorcycle: Adjust the air intake by 0.08 and the air exhaust by 0. 10 with a feeler gauge, and then start it normally. If there is idle speed, it will accelerate the descent. ... Generally, there is no problem with the valve clearance when the idle speed is normal. 0.08-0. 10 is also a normal valve clearance, but it is not absolute. If it is only the speed rise and fall after the valve adjustment, and the exclusion is a psychological feeling problem, then the valve clearance can be readjusted and enlarged as much as possible. Don't blindly reduce the valve clearance, otherwise it will not only affect the power, but also easily increase the wear. It is normal for the engine to click slightly when working, and the valve clearance should not be adjusted too small in order to pursue the so-called quiet space.