There is a little spring and ball just above the oil filter thread. My ball just fell out? the seal is jagged and I can't seem to get it out to replace. Is their a special tool or what?.Or could I just forget about it because its there to bypass the filter if the filter becomes cloged right?...I just discoverd this over the weekend. I found the half page in the fsm (not even that). The fsm says sutiable tool. What is that. I tried a small flat screw driver and a screw extractor with no luck. I'd rather replace it. Any help would be great. Thanks.