How to Adjust Valve Clearance in an Engine?

[KingstonDella]

Engine valve clearance adjustment method is: 1. Loosen the lock nut; 2. Select the appropriate thickness on the feeler gauge and insert it between the adjusting screw and the valve; 3. Turn the adjusting screw so that the feeler gauge can move flexibly inside; 4. Fix the adjusting screw with a screwdriver and tighten the nut with a wrench; 5. Confirm that the feeler gauge is neither too loose nor too tight. Hazards of excessive or insufficient engine valve clearance: 1. Excessive valve clearance: It will cause impact noise between the valve transmission parts and between the valve and the valve seat, and accelerate wear; 2. Reduced duration of valve opening: The cylinder charging coefficient decreases, and the exhaust is not thorough; 3. Insufficient valve clearance: When the engine is hot, the valve cannot be closed tightly, causing air leakage, resulting in reduced power and burning of the valve.