Re: Rattle/Knocking sound
Sounds just like I had on my bike...it turned out to be the final drive. I just posted the following on the Final Drive Failure Registry thread.
...good luck & hopefully you will resolve the issue!
Final drive failure at 57,348 miles on my 2001 K1200LT. Got the bike back a couple weeks ago and rides like a brand new bike...I just hope that it lasts at least another 50,000 miles.
Symptoms - started feeling vibration at the foot pegs and handle bars, mostly at 2,500 RPM and at 40 MPH. Also rough sound when coasting with the engine shutoff. For two weeks a was puzzled and thought that it may a problem internally in the engine or shaft drive, but it wasn't until I decided to take it into the shop to have checked that problem was pin pointed.
Findings - metal shavings in drain plug, main bearing removed due to excessive backlash: .65mm Limit is .1 - 22 mm, also had ball cage failure.
Repairs - replacement of main bearing, shaft bearing, shaft seal, and re-shim.
Total Cost: $489.35