How do you set tappets on a Toyota 2e engine?

To set the tappets on a Toyota 2E engine, first ensure the engine is cold. Remove the valve cover and use a feeler gauge to measure the clearance between the tappet and the rocker arm. The intake valve clearance should be set to 0.15 mm, while the exhaust valve clearance should be set to 0.20 mm. Adjust the clearance by loosening the lock nut and turning the adjusting screw until the correct clearance is achieved, then recheck and secure the lock nut.