I am new to the thread , just got my first 03 Katana 600 . I have done alot on this bike and and still going with even more plans . However i have a question for anyone who may know ? first let me start by saying i am a pretty good mechanic and can diagnose alot of issues and fix . but i have never owned a kat before and don't know if it is normal ? At under 2000 RPM there is a little chatter , kinda sounds like timing chain . 25,000 miles . it's not the valve clearance IMOP . Any help would be greatly appreciated .
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