How much is Yuchai natural gas 4-valve hinge low plane?

The recommended value is 0.25mm-0.4mm.

The sequence of valve adjustment is as follows: when the first cylinder is at the end of the compression stroke (seen from the front end of the engine, the No.4 and No.5 valves are pressed to the lowest position), the valves of 1, 2, 3, 6, 7 and 10 can be adjusted (seen from the front end of the engine); When the sixth cylinder is at the end of the compression stroke (the 7th and 10 are pressed to the lowest position as viewed from the front end of the engine), the 4th, 5th, 8th, 9th, 1 1 2 can be adjusted as viewed from the front end of the engine.

The function of the valve is specially responsible for inputting air into the engine and discharging exhaust gas after combustion. From the engine structure, it can be divided into intake valve and exhaust valve. The function of the intake valve is to draw air into the engine and mix it with fuel for combustion; The function of the exhaust valve is to exhaust the exhaust gas after combustion and dissipate heat.