Rough Vibration Around 8k -
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post #1 of 3 (permalink) Old 09-12-2019, 09:38 AM Thread Starter
Join Date: Aug 2019
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Rough Vibration Around 8k

2009 750
its always had this problem, i figured id ask now since im stuck. i have checked a majority of the bolts to make sure they are tightened down. everythings fine until it hits 8k then i feel the rough vibration like its metal rubbing together. i feel it in the handlebars mainly and a bit on the seat. bike rides very well. no lag in power or take offs. bike has 9900 miles on it. im not sure if the valves need adjustment or maybe just the oil. oil change was done at 7500. even before that, it still had this issue. any ideas would help. it doesnt kill me but just annoying. Thank you

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post #2 of 3 (permalink) Old 09-12-2019, 12:42 PM
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Join Date: Mar 2013
Location: In the twisties around Hendersonville, NC
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Check the exhaust system from front to back. Look for less than 1/4" clearances to frame and engine parts. Then check the exhaust mounts. I think there is one or two just behind the engine that have rubber bushings. It is likely they are gone after this amount of time.

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post #3 of 3 (permalink) Old 09-13-2019, 06:43 AM
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Wheel bearings, forks, loose chain/bad gears, motor mount, old spark plugs....
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