Loose Suction Line fitting

3 replies to this topic
  • denny49

Posted September 18, 2011 - 10:53 AM


My 06 YZ450F has a loose fitting thst goes in the right side case, I believe this is the suction line, it has the black braided hose that is hose clamped to it. I was changeing the oil and saw that it was loose and could be pulled right out. Can anyone tell me the proper way to secure this fitting?


Denny 49

  • grayracer513

Posted September 18, 2011 - 11:09 AM


That is the air pressure balance line from the oil tank in front of the crankcases to the sump cavity. Order a new fitting, remove the crankcase cover and thoroughly clean around the hole, and install the new fitting (presses in place) with some JB Weld or similar 2 part epoxy.

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  • denny49

Posted September 18, 2011 - 11:49 AM


Are there any retainers on the inside of the case? My maual show nothing but the parts breakdown looks like there is a seal and a retainer clip on it.
Thanks for your post it really helped me out.
Denny 49

  • denny49

Posted September 18, 2011 - 12:23 PM


After taking a closer look I can see I was wrong.
I will get a new fitting and press in place.

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