The manual will be helpful for sure. I'd start at the valve itself. Cable with the black anodized end goes into the right-hand loop on the cable holder. Route the cables flat behind the crankcase and up behind the airbox, then into the dedicated cable clip on the upper right frame rail. From there the routing to the servo is pretty intuitive - just aim to keep the curve of the cables smooth all the way. The servo pulley is numbered to show which cable goes where. The manual covers this.
