Note: Ensure the engine is cool to the touch before attempting to set the timing marks.
1. Locate the timing marks on the camshaft and crankshaft. The camshaft timing mark is usually a small notch or hole in the cam gear, while the crankshaft timing mark is a small notch or hole in the crankshaft pulley.
2. Position the engine at top dead center (TDC) on the compression stroke. To do this, first, remove the spark plug from the number one cylinder. Then, use a wrench to turn the crankshaft until the piston in the number one cylinder is at the top of its stroke and the timing mark on the camshaft is aligned with the timing mark on the crankshaft.
3. Adjust the timing chain or timing belt so that camshaft timing is aligned with the crankshaft timing mark. To do this, loosen the timing chain or timing belt tensioner, and then use a wrench to turn the camshaft until the timing marks are aligned.
4. Tighten the timing chain or timing belt tensioner.
5. Reinstall spark plug.
6. Start the engine and check that timing is correct. To do this, use a timing light to shine a light on the timing marks. If the marks are aligned, then the timing is set correctly.
