To view the timing marks on a 2001 Acura 3.5RL, first, ensure the engine is off and cool for safety. Remove the engine covers, if necessary, to access the timing belt area. The timing marks are typically located on the crankshaft and camshaft pulleys; align them according to the manufacturer's specifications to ensure proper timing. Always consult the vehicle's service manual for detailed instructions and diagrams specific to your model.