I am getting some parts together in hopes of putting my Wisconsin ABN back together for my Waterloo 40. I discovered the PO neglected to include the head bolts & the base bolts in the box of misc parts.
The parts list shows some of them as "special hardness". Any idea what that means? Is it an "all bolts are grade 5 unless otherwise specified as grade 8" type situation or are they truly special?
Also, the parts diagram for the oil pump shows the top check ball above the pin (red arrow). Mine is below the pin, above the spring (green arrow). Which is correct?