it's an 8mm allen head bolt.  Use an 8mm socket and a long extension
and hold it from the far side of the starter.

Make sure the neg. terminal of the battery is disconnected first when
working near the starter!

-Paul

>I am trying to replace a bad starter on a 91 Vanagon, Full Camper, with
>Automatic.  Two bolts hold the unit in, and the top bolt appears to be a
>torx T-50, however after putting a bit of force in attempting to remove it,
>it spun.  Which leads me to believe it may be alan.  Since my Bentley manual
>only goes to 87, it doesn't specify the type of bolt.
>
>
>
>Can anyone provide tips, and the top bolt specs?
>
>
>
>
>
>Thanks!!!
>
>
>
>Jack