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About apulskamp

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  1. apulskamp

    CRF250R valve question...

    My '04 250 made a similar sound after a valve adjustments. It worried me so I pulled the valve cover back off and found an exhaust shim loose in the bottom of the head. I have no idea how it came out from under the rocker arm but it did. With a sound that loud I would take it back apart and double check just to be safe.