2005 yz250f fork oil replacement?

[Brraaappp]

Hello,
I am helping a friend change the fork springs in the front of his 2005 yz250f. We changed the springs with not to much trouble but I am not real sure the proper procedure for replacing the oil. These forks are a lot different than I am use to. The book say to use 8.28 us oz. However I see there is an inner valve on the top. I guess you hold the outer ring nut and remove the inner with a special tool. Does this have to be removed to add oil? Also where do you prime/pump the fork to get the oil distributed evenly? The book does not give the greatest discription on how to add the oil. Any help would be great!
Thanks,
Brraaappp

 

[russ17]

You don't need to change the inner cart fluid to change the springs.


Russ

 

[Brraaappp]

Ok Great! How much oil do I need to replace? Is there a spec for the amount in just the out tube area. Also do I just pour it in the outer tube area where the spring is. I did pour out some oil during the spring change but it did not seem like a lot of oil to me! Thanks for the help!
-Brraaappp

 

[WhiPit]

The new KYB forks don't use much oil in the outer chamber. There's a lot of plastic bits taking up the space in the bottom of the fork. I'd say an "average" amount of oil in the outer chamber is about 265cc.

 

[ActiveRide]

Your bike comes with 250cc's in it.