There are four steps to adjust the four-cylinder machine:
First: Prepare tools: hand crank, open-end wrench, flat-mouth screwdriver, feeler gauge, measuring tool, etc.
Second: Remove the valve cover and other accessories.
Third: Check and adjust the valve clearance:
1. Determine whether the piston of the first or fourth cylinder is at the top dead center of the compression stroke;
2. Use two Adjust the valve by the secondary adjustment method: crank the crankshaft so that the first cylinder is at the top dead center of the compression stroke, adjust the valve clearance according to the "double, row, no, advance" and engine working sequence, and then crank the crankshaft one circle to make it The fourth cylinder piston is at the top dead center of the compression stroke. Press "Double, Exhaust, No, Advance" to adjust the valve clearance of each cylinder.
3. Use a feeler gauge to check the valve clearance value.
Fourth: Install the valve cover and other accessories.