What is the engine valve adjustment method?

First rotate it to the top dead center. If it is the top dead center of 1 cylinder, adjust the intake and exhaust of 1 cylinder, the intake and exhaust of cylinder 2 and the exhaust of cylinder 3; If it is the top dead center of cylinder 4, adjust the exhaust of cylinder 2, intake of cylinder 3 and intake and exhaust of cylinder 4. The engine valve can be adjusted by the following methods: 1, driving wheels of crankshaft, camshaft and oil pump, and marked teeth. Just aim this at the mark of the engine. 2. The key is the alignment method of the balance shaft on the left side of the engine near the air conditioning compressor. Even if this mark is aligned, it may not be correct. 3. Specific steps: Remove the bolt with the specification of 14mm on the left side of the engine and behind the engine bracket, and insert it into the cylinder horizontally with a screwdriver. After aligning the marks on the balance shaft, you can insert the screwdriver horizontally. This is correct. When it can only be inserted obliquely, rotate the balance shaft once and insert it.