Metallic residue on bolt magnet

[stabak]

what do you guys think? Had a piston/rings change before 20 hours and a powervalve adjustment.... Changed oil and found a lot of metallic residue like this, as if something was shaved.... the parts had a round shape like a washer



any thoughts?

[Leo]

There a hole thru power valve right side to crankcase....

[stabak]

seems like one pv bearing seal is broken but not that much to justify the amount found.... opened the right case, everything looked normal... Is there any seal that could have possibly fell off?

[bkwdc]

pull out that bearing and I'll bet you'll find what else is missing