blow buy

4 replies to this topic
  • hofdoug

Posted June 09, 2009 - 04:38 PM


I just bought a yz 450f and I was wondering how much air should be coming out of the air vent tube?

  • 642MX

Posted June 09, 2009 - 06:19 PM


They blow out a lot of air, don't worry. Now, if your header glows red.... :thumbsup:

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  • grayracer513

Posted June 09, 2009 - 07:26 PM


Close to 450cc of air at a low idle. Then it should get sucked back in. The piston pushes the same amount of air out from under it as it does on top.

  • hofdoug

Posted June 10, 2009 - 07:14 AM


Thanks that had me worried. How do I check my oil? and were is a good place to get a repair manual?

  • WB450

Posted June 10, 2009 - 07:55 AM


Check here at the bottom.

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