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.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • 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.

Related Content


The "going back to the other darkside" adventure... by Monk

Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  94 replies

Michigan Motocross Tires by 288yz450

Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.