How I fix my Bissell Proheat 2x Model 9300 which sprays too much shampoo?

I bought a Bissell Proheat 2x Model 9300 at a yard sale that looked almost new. It did not spray, so I took it apart. After trying several things, I took my air compressor and blew out the hoses. A thick yellow foam came out of several hoses. When I reassembled, the markings I made on the hoses to reattach them correctly had rubbed off, so I reattached them as I thought. But now the machine dispenses too much shampoo. I need a diagram for the tubing to make sure I hooked them up correctly and ideas to make this machine work.