Couldn't find a pic on site.
My e-manual covers models 99-02 which suggests they are all the same.
Check for linkage (rubber sleeved cable) between throttle plate actuator cam and cruise control actuator. It runs from throttle plate cam behind the throttle body air box to the actuator on the firewall in front of pax seat. Cruise control actuator uses vacuum to pull on the throttle through the cable link.
If you can't find this, you need more help than I can supply.
See you down the ROW!
1999 Subaru Forester