Oil issues-05 yz450f

2 replies to this topic
  • slh0616

Posted February 23, 2012 - 09:56 AM


I just changed the oil in my bike for the first time (bought it a week ago). I did not get a Manuel with the bike so im kinda running blind on how to change everything. I talked to a Yamaha dealer and they said to just drain the ONE bolt at the bottom of the engine (and the oil filter), i pulled out about .75L from this. I did this and then refilled with 1.1 L of semi-synthetic oil. I ran the bike for a few minutes and checked the dip stick and oil is flowing out of the dip stick valve every time i open it up. My thought is that I didn't drain the oil in the frame (my buddy with a 01426 does this) and i filled with to much oil. What is everyone's thought? is there to much oil in the bike? How do i get it right without wasting all the new oil I put in the bike? THANKS!

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  • grayracer513

Posted February 23, 2012 - 10:25 AM


Well, now that you've mixed your new oil with the used stuff, you've already pretty much wasted it. It's a common mistake for people not used to or expecting dry sump oil systems. But to adjust the oil level downward, run the bike for 45-90 seconds and then drain oil from the frame a little at a time until it's at the right level.

In the Common Threads Sticky, you would have found these resources:

Oil Change Procedure

Manual downloads:

...and a bunch of other stuff. At least you won't have done any serious damage by this mistake. About the loss involved is the oil and the mess it makes.

  • slh0616

Posted February 23, 2012 - 10:30 AM


Ya thanks for the tip. The Yamaha dealer guy must have not known what he was talking about. I just double checked the oil level and it is a little high, I just let some out and will recheck here in a few minutes. I guess ill have to change the oil again after a few rides. Thanks

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