Information on how to do it is usually impossible to get. It's not really economical for lbs to service them and manufactures often provide no technical documentation.
 The above applies only to low end forks, particularly those produced by companies that don't also produce high end forks.[/edit]
If you want to service it you pretty much have to work out how it comes apart. Low end forks tend to be fairly simple. Often they just contain a couple of springs and no damper.
A quick search on google came up with this.
No oil. Just a spring in the cylinder on the left, and empty on the right. you can remove the cover under the adjuster, with a large adjustable wrench - carefully!
Last edited by d_D; 08-03-05 at 10:39 AM.