RBX375 action
 

anyone know how to adjust it?

same way you do any other action , except the truss rod slot , if you need to adjust neck relief, is at heel end of the neck , not at the top under a truss cover

i don't know how to adjust any actions :L need i take the strings off of the bass first?

You want to head over to the hardware, setup and repair section. You'll get a better response over there.

But to start, read through this thread: http://www.talkbass.com/forum/f18/al...d-here-125382/

Despite the name, it won't answer all your questions. But it will give you a much better understanding of the process and is a good place to start.

All the best,

Bob

http://www.fender.com/en-CA/support/...r-setup-guide/ here ya go , procedure is pretty much the same for any guitar,

thank you so much