How to adjust valve clearance?

[DiAnderson]

Methods for adjusting valve clearance: 1. Cylinder-by-cylinder adjustment method: Determine the compression top dead center position of a cylinder according to the firing order, then adjust the intake and exhaust valve clearances of that cylinder; 2. Two-step adjustment method: Rotate the crankshaft to position the first cylinder piston at compression top dead center, align the flywheel mark with the inspection hole mark (e.g., EQ6100 engine), then adjust valves 1, 2, 4, 5, 8, and 9. Automotive valves, also called throttle valves, are responsible for introducing fuel into the engine and expelling exhaust gases. Traditional engines have only one intake valve and one exhaust valve per cylinder, featuring a relatively simple design structure.