Use a dedicated chain cleaner and a soft brush; never use gasoline, as it destroys the O-rings. Fuel Injection System (PGM-FI)
Here is the harsh truth: Honda does not give these away for free. However, you have three options, ranging from ethical to "use at your own risk."
: A comprehensive parts catalogue for the Honda CB190X and CB190XR models (updated as of March 2024) is available on Scribd . It includes part numbers, descriptions, and color codes.