That switch can be a fussy pain to adjust. i.e. the hex head screw is
made of soft metal and gets buggered easily when the parts are seized
up.

Some images of one I "saved" but opted to R&R for a lower mile
throttle switch assembly:

https://picasaweb.google.com/musomuso/New1988Westy#5748198481366002162

Wear at the throttle shaft can adversely affect switch adjustment.
Setting the lock screw can do same. Gowesty has good articles on this.
Van-cafe may have some too.

On 1/12/15, Kevin Duvernay <kduvey@gmail.com> wrote:
> haha, upon re-reading I can see It still may not be clear. I'm moving the
> lever with my hand to check the adjustment of the throttle switch. I'm
> adjusting the throttle switch as outlined in the manuals... first loosening
> the set screw (left) and then adjusting with the adjustment screw (right)
> the setscrew on the left moves as I adjust the adjustment screw. once
> adjusted I re-tighten the setscrew.
>
> Hope that clears it up.

--
Neil n

Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>

1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>

1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>

Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>