Mellow Yellow is an automatic. The throttle cable is attached to the
throttle arm on the throttle body by a pin. See
http://www.altavistaaudio.com/Westy/crusing.html  - I have circled the pin.

Manual transmission versions use a bolt and a threaded in that spot. See
the picture is at http://flickr.com/photos/xio/162699929/in/photostream/

I want to buy one of those bolts and one of those threaded sleeves.

--

Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
KG6RCR