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Guilow
04-27-2015, 04:28 PM
Hi All, new here, and new to the 400ex. Recently got a 2005 400ex and 2005 450R, both with less than 6 hours of use on them (I know the orig owner, before you say "yeah right"....) :)

Anyway, my 400ex makes a bit of a whining noise, almost exactly like this video i found on you tube. Suggestions as to what it is? It goes away after riding for 10 minutes or so. But definitely follows the revving of the bike, and happens in both neutral and while riding.

FIXED VIDEO (UPDATE):
https://youtu.be/zKtltUqtDSk

Guilow
04-28-2015, 11:25 AM
Sorry guys, fixed that broken link above. https://youtu.be/zKtltUqtDSk

Stickman400
05-04-2015, 04:12 PM
Mine does that too, just normal 400 noise. Make sure the valves are in spec and she'll be fine.