How often do I need to set the ignition timing on my CB350 / CL350 / SL350? December 17, 2018 02:57 Every 1,500 miles / 2,400 km. Related articles How to set the ignition timing on the Honda CB350 / CL350 / SL350 How often do I need to replace the ignition points on my CB350 / CL350 / SL350? Honda CB350 | CL350 | SL350 Factory Service Manuals What is the spark plug gap for the CB350 / CL350 / SL350? What is the valve adjustment / tappet clearance specs for the Honda CB350 / CL350 / SL350?