09 yz450 weak threads?

4 replies to this topic
  • rmcr250r

Posted October 24, 2009 - 03:47 PM


so i just bought a brand new 09 yz450 and i was changing the oil. As i reinstalled the drain bolts (with a torque wrench at proper torque spec) the first three threads from the case broke off unto the bolt under the left footpeg.Bolt was in straight so i did not strip it. Is this a common problem with this bike?

  • grayracer513

Posted October 24, 2009 - 03:57 PM



There's no drain bolt under the left foot peg. If you mean the crankcase drain on the right side, how did you use a torque wrench on that?

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  • rmcr250r

Posted October 24, 2009 - 04:20 PM


there are two drain bolts, one on the right side and left side and yes on the left side u can get a torque wrench in there but not on the right. Im not mechanically challenged

  • grayracer513

Posted October 24, 2009 - 04:44 PM


The left drain is not under the foot peg, either. It's right out in the open under the ignition cover. The right one is "under the peg" in a manner of speaking, so that's why I asked.

So which one did you strip?

  • rmcr250r

Posted October 24, 2009 - 05:14 PM


yea i just meant the drain plug on the left under the ignition cover but i didnt exactly strip it, the first three threads just broke off onto the bolt

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