1. Shut off the engine and let it cool. Once the engine has had time to rest and cool down, you can begin the process of inspecting and adjusting the valves.
2. Remove the spark plug. It is located just below the cam cover, and you can remove it using the spark plug wrench.
3. Remove the cam cover. You will need the 10 mm socket for this step. The cam cover is located underneath the spark plug. Be sure to keep track of the various sizes of bolts you remove so that you will know where to put them when reattaching the cover.
4. Set the piston to Top Dead Center (TDC) of the compression stroke. You will know that the piston has been correctly positioned when you can insert a feeler gauge between the cam lobe and the valve stem of the intake valve with no resistance.
5. Adjust the valve clearance. There is one intake and one exhaust valve. Both should have a valve clearance of 0.006-0.007 of an inch. You will need to use a flat-blade screwdriver to turn the valve adjusting screw on the side of the cylinder head. This will lift or lower the valve stem, allowing you to adjust the clearance between it and the cam lobe.
6. Reinstall the cam cover. Apply a thin sealant around the gasket to ensure a leak-free seal, then put the cover back on and secure it with the 10 mm bolts you removed in step 3.
7. Reinstall the spark plug. Use the spark plug wrench to carefully reconnect the spark plug to the ignition lead, then lower it slowly into the spark plug hole.
7. Start the engine and recheck the valve clearance when the engine is warm to ensure that they are within specifications.
