I bought a sportjet 90, 1995 that will not start, except with starting fluid. I had a mobile mechanaic who knows nothing about them, tear into it, it has good compression and spark, he said it needed a enrichener, so he took off the old one, and then left with it, and never came back. I ordered a new one, and I have it now, but I can't figure out where it goes on the carb. I thought I would at least try it with the new one if I knew where it goes. Do you you know where I can look at a schematic?