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Broken Bearing in Oil!!!

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I just purchased an '06 450 XC with very low hours. Took it out on Saturday and everything seemed fine. Took it for a lap around the neighborhood tonight to heat it up for an oil change, again, everything seemed fine, but when I pulled the drain plug my heart sank. The magnet pulled out a small chuck of bearing race and several tiny bearings! I continued with the oil change and was able to fish out the rest of the bearing race from the long screen hole. The bearing race is about 5/8" diameter and the bearing are tiny (probably about a 1/32"). I found 8 balls, which doesn't look like enough to go around the inside of the race so I'm sure they are still more floating around in there.

Does anyone know where this bearing may have came from? I am assuming I'll need to tear down the whole engine, hopefully it is repairable. I waited a long time to get a KTM, and now this happens! I have not yet called the guy I bought it from, I would like to find out more what I'm dealing with before I do. Any advice would be appreciated!

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Seen a few loose the roller bearing on the spring loaded shifter indent arm that runs on the star wheel at the end of the shift drum. This can be changed from the under the clutch cover once you remove the clutch hplates and inner and outer hub. Pretty sure there was a uddated bearing for that model.

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Man that sucks! Are you having any problems? Maybe you'll be lucky and it was left in there and already been repaired.

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The bike was running perfect. The bearing race only had one 1/4" chunk missing (stuck to the magnet), the rest was still in a ring with no nicks or scratches on it so I'm hopeful it didn't cause any other damage. I'm sure there are still some bearing floating around though. Heading out to the garage now to pull the clutch cover. Thanks for the advice!

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It was the bearing on the spring loaded shifter indent arm (manual calls it a locking lever). The bearing is part of the arm and there is a superceding part number for it, so hopefully that is the updated bearing. Now my problem is finding all the bearings. Only 8 came out on the oil plug, and if I line them around the bearing race they make it a little over half way around, so I'm assuming there are still 6 or 7 more left in there. None came out when I pulled the clutch cover. The parts only $10 so I will order two and take one apart to count the bearings. Any ideas on how to find them? I really don't want to have to crack the case open!

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You can flush the engine with Diesel but that means you need to remove it from the frame. I haven´t had that bearing apart so i can´t help you with the number of bearings.. Sorry.

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I have also seen this bearing fail. The three small pieces at the top of the pic are all I found.

motorpics00068.jpg

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I think I fiqured it out! The little squiqly washer looking thing in the picture above is actually the bearing holder. I found two of them in mine, one I fished out of the long screen hole when I was changing the oil, the other is still hanging around the locking lever arm. I counted and there are 8 "hoops" on mine, so it must have held 8 bearings, which is how many were stuck to my plug magnet! I think I'm good now, there shouldn't be anything left in the engine. I will probably just flush with oil the best I can and then change it again after my next ride. The part is on it's way, should have it Wednesday.

Looks like yours caused a little more damage, I guess I got lucky on mine.

Thanks for everyone's help on this!

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