How to adjust the valve clearance of Haojue HJ 125-F motorcycle?

First open the left gearbox cover, and then align the T-notch of the magneto with the notch on the gearbox. This is just at the top dead center, preferably when the engine is in the compression stroke. If this is the exhaust stroke, you can turn it again. Then unscrew two large screws with a diameter of 2 cm on the cylinder head. At this time, you can see the rocker tail and valve stem of the exhaust valve and intake valve, and the valve clearance can be adjusted by adjusting the screw at the tail of the valve stem. When measuring the clearance with a feeler gauge, the cold clearance of the intake valve is almost 0.08-0. 10MM, and that of the exhaust valve is almost 0. 10-0. 12 mm .. Finally, reload.