How often do I need to replace the ignition points on my CB450 / CL450 / CB500T? December 17, 2018 05:32 Inspect and set every 1,500 miles / 2,400 km. Consider replacing after 6,000 miles / 9,600 km. Related articles How do I set the ignition timing on my CB450 / CL450 / CB500T? How often do I need to set the ignition timing on my CB450 / CL450 / CB500T? Honda CB450 / CL450 / CB500T Factory Service Manuals What is the spark plug gap for the CB450 / CL450 / CB500T? How to Synchronize Carburetors The Honda CB450 / CL450 / CB500t