Where are the timing marks on a Volvo 122s?

On a Volvo 122S, the timing marks are located on the crankshaft pulley and the timing cover. The crankshaft pulley typically has a notch or line that aligns with a mark on the timing cover to indicate the correct timing position. To set or check the timing, you would align these marks while the engine is at the appropriate timing position, usually at top dead center (TDC) for cylinder one. Always refer to the specific service manual for detailed instructions and specifications.