Question about 2003 Yamaha YZ 125

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Gear box oil drain bolt

Please some one help me!! been trying to do an oil change on my 99 yz125,
could some one please tell me what size oil drain key i need 10mm etc hex or square etc.... thank you very very much!! need to get this oil out its foul as!!

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Im pretty sure its a 14mm its definatly a hex not a square and its right on the bottom of the engine.

Posted on Jul 12, 2010

  • Curtis Shaw Jul 16, 2010

    wouldnt hurt to rate my answer... :)

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It is most likely a 12mm or 13mm. I cant see it being any bigger then that

Posted on Jul 06, 2010

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