Parts are not available. I went directly to the manufacture and talked to someone I trust there. They even went as far as to have someone rummage through the R&D rooms. But in the meantime I figured out a solution to my problem.

The pump is actually a miniature gear pump….a standard pump for powered sprayers. I took mine apart. Everything looked fine except there was no grease in the stuffing box. (the stuffing box is a small compartment where the shaft comes out of the pump. This area should be filled with a waterproof grease)

I filled the box up with white lithium, reassembled the unit and it works great! It primes immediately and doesn’t leak.

Actually the Sprayer is alive and well! But it is getting a new life (with a new part number) in the Lawn & Garden Department alongside the C3 string trimmer, hedge trimmer, blower and chainsaw.