Quote:
Originally Posted by greg737
It's known that over time the EX250's Engine Mounting Bolts will loosen up (probably due to the constant high-frequency vibrations produced by engine's high-revving nature).
There are 3 Engine Mounting Bolts (1 front and 2 rear) and the rear 2 bolts are the ones that are found to be loose more often (sometimes the nut will even be missing off the other end of the bolt).
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I've found this to be the creaking noise on a couple of my Ninjas, I can usually make the creaking noises by holding the front brake and lightly rocking the bike back and forth. Tightened the bolts and creaking was gone.