Originally Posted By: Ducked
Originally Posted By: StevieC
Originally Posted By: ZeeOSix
I use to work at a bike shop way back when while going to school. A lot of smaller cc dirt bikes only had a pick-up screen (no oil filter) , but they had a centripetal oil cleaner that you could take apart and there was always some collected crud inside like you see in the video.
Cool... I hadn't heard of it until recently.
Standard on small motorcycles here, which nearly all use Honda CB or CG clone engines.
Cleaning them out is not-so-standard. I'd bet money it is never done in most cases.
OTOH the scooters mostly don't have centrifugal (or any) filtration (so clearly its lack isn't rapidly fatal) but they don't have a shared sump/wet clutch setup either.
I doubt many people even know some bike engines have a centrifugal filter. The ones I worked on had screws or sometimes a big circlip that had to be removed to in order to pop the cover off. Usually did find a thick layer of caked on debris that had to be cleaned out.
Example: