Valve Clearance of Haot7h Engine

First of all, you should make sure that the piston of the first cylinder of the engine reaches the top dead center, and then feel the gap between the two valves of the first cylinder or the fourth cylinder with your hands. You must have two valves. After determining that it is the first cylinder, adjust it from front to back to 1236, and then adjust the engine from back to front to 1245 after another revolution. The valve clearance of diesel engine is a little smaller than that of gasoline, which is not strong enough.