"If the Jota 120 owner Clem describes had various dealers carrying out the service over a period of twelve years , and just paid the bill ..... without even knowing what oil was going in ......... then how would he know if these different dealers were bothering to drop the exhaust and check the filter each time , or not ?"
that idea doesnt work either because I (personally) did at least three services for Paul, and as I (probably) hadnt seen (for maintenance) the bike the previous year or two, I DEFINATELY dropped the strainer each time I saw it, it ran perfecty until an oil was installed that was not compatoble with the residues of the previous oil (my theory unproved).
Pirahna Bro2 the slingers catch oil "slinging" out of the two pumped fed centre main bearings, when running, they (the slingers) are probably pretty much full of oil, and the centrifugal forces, allow the oil to be spun all over the place, from the fullup larger than bearing centre tin bore hole, but the soild retained in the outer periphery which is a tight fit onto the flywheels, tight, but not neccesarrilly oil tight.
As said before IT ALWAYS happens after a short mileage following an oil change, if the dealer/mechanic/owner cleaned the strainer it could still happen) so my advice is this, change your oil brand? then only do 100 miles and drop it again to check for fluff, refill with the same oil no matter if the strainer is stil clean or contaminated, if you buy a bike and do not know what oil is in it (common) then change the bleeding oil, and again at 100 miles.
CLEM
. Cleaned the filter then dressed the bike up in bodywork that was in way better condition than when I purchased the bike and sold it on. Actually sold it back to the previous owner who loved it with all the original bodywork on. That bike still has not seen daylight and I doubt it ever will
Go ahead and zoom in to see all the shiney metal particles
