How do you adjust the timing on a Corsa Lite?

To adjust the timing on a Corsa Lite, first, ensure the engine is at operating temperature and then locate the timing marks on the crankshaft pulley and the timing cover. Use a timing light to check the current timing by aiming it at the marks while the engine is running. If adjustment is needed, loosen the distributor hold-down bolt and rotate the distributor slightly to advance or retard the timing as required. Finally, retighten the bolt and recheck the timing to ensure it's set correctly.