How do you use the marks on crankshaft pulley 90crx?

To use the marks on the crankshaft pulley of a 90 CRX, first ensure the engine is at top dead center (TDC) on the compression stroke for cylinder one. Align the timing mark on the crankshaft pulley with the corresponding mark on the timing cover or engine block. This alignment is crucial for setting the correct ignition timing and ensuring proper engine performance. If adjusting timing, use a timing light to verify the alignment during engine operation.