Reply To: First Service – Which Filters? Great British Handcrafted Motorcycles › Forums › CCM Motorcycles – General Discussion › First Service – Which Filters? › Reply To: First Service – Which Filters? 11 July, 2020 at 3:49 pm #5469 ScramblerMember Maybe the OP is referring to the oil strainer filter located on the bottom left hand side of the engine behind a circular disc. In which case, yes it does get cleaned at first service.