Posted by Bob Thompson on Saturday, October 22, 2005 at 11:56PM :
In Reply to: Picked up a Poly today posted by Tim Holloway on Saturday, October 22, 2005 at 6:53PM :
My 64 D200 Manual covered the poly and the 251. it also had the 540 in the trans section.
I believe the little well you asked about is where the bi-metal auto choke spring lives.