YZ250f 09 Oil Pressure Relief Value not in genuine Part manual

Attached are two pics of pressure relief valve on the outside clutch cover plate case,  i'm trying to find parts or part number to replace seal.  I'm unable to find parts through manuals or online OME parts sites.  Took it into Yamaha and mechanic couldn't find parts.  Can anyone out there help with part number or link to a part site.  It would be very much appreciated

 

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(Wrong forum.  Moved to YZ450F)

 

 

Attached are two pics of pressure relief valve on the outside clutch cover plate case,  i'm trying to find parts or part number to replace seal.  I'm unable to find parts through manuals or online OME parts sites.  Took it into Yamaha and mechanic couldn't find parts.  Can anyone out there help with part number or link to a part site.  It would be very much appreciated

 

Item #29 on the Crankcase Cover 1 page of the parts fiche; PN 583-13113-00-00 "Check Ball Seat"

 

It's not a pressure relief valve, BTW, it's the low pressure check that prevents oil from quickly migrating back from the oil reservoir to the sump while the engine is not running.

 

Yamaha Parts: http://www.yamahamotorsports.com/partviewer/default.aspx?ls=sport

Hi Greyracer513,

Thanks for the info, much appreciated, it helped heaps, keep up the good work

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