Thank you for information.Pic looking in the filter sock. Pic of the motor inlet. I'm not seeing anything get past the sock filter.
I think there are two cases regarding this fuel system failure.
One is the trouble caused by the processing of the tank.
One is the design problem of the fuel pump.
I will omit the flake of the tank and the sandy black soot (welding debris) because it is as discussed in the past topic.
Another possible source of fuel pump design is that fuel pump life is typically determined when the motor brushes reach their wear limit.
By design, the main filter filters impurities (black micropowder) from this pump, but in the case of a car, it will not clog even 100,000 km or 200,000 km. (Confirmation of micro-powder is evidenced by washing the strainer with a parts cleaner and turning it white. This powder passes through the strainer and accumulates in the main filter, which is normal operation.)
However, in the case of motorcycle filters, the filter life is short due to the small filter capacity. (*The filter of CRF1000 is the same as CBR250 and CRF250. Also, HONDA may judge that this is good from experience). In short, one of the causes may be that the filter is clogged with too much impurities from the pump (the cause of breakage earlier than the designed life?).
I can't tell if this is good or bad.