09 yz 450f oil filter help!

Changed the engine oil and filter on my 09 yz450 bike for the 1st time today. When removing the oil filter a spring also fell out. Unsure where it came from. my guess is it was sitting between the filter and the engine. Is this right? If so how do i get it to stay there so i can put the filter back in. Waiting to go out for a ride so want it fixed


Edited by davecarrr414

my 07 doesn't have any spring.Did you look up the parts fiche to make sure it belongs there?

There is no spring that belongs in the oil filter housing of any YZF as a separate part. The filter itself has a bypass valve built in, and there is a spring involved with that, but it should stay with the filter. Discard both and install a new filter.

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