br500

Anybody have a working Stihl BR 550 Craftshaft part no: 4282 030 0404 ?? My bearings are shot. Actually, only need the bearings but the whole unit is one part. I believe the crankshaft for my unit is same part as BR500, BR550, BR600, & BR700. Willing to buy or trade chainsaw parts for your...

Not a chainsaw, but: I wish Stihl would strengthen, or redesign these BR550-600 cam gears. I change about 5 or 6 of these a year, and I don't even work on that many Stihl's, except cutquik's. Does anyone know what the main reason for plastic cam gear failure is? Detonation...