Jeff,

We're sorry, but we don't have an exploded view of the old pump from the original FS-120 Surpass engine. That pump was never repaired outside of the factory. It is made of several machined layers that are separated by glued seals. Opening the pump usually rendered it useless.

Pumps were replaced here and repaired by the factory. Unfortunately, O.S. no longer supports that pump because it's been out of production for so long.