Jack: I have a question for you...I just took delivery of a Southwest pump, and I thought it was a 712. The ID tag is marked 612 CSP2. Your book shows a similar one as a 712 CSP and denotes it as a computer pump with outside site gauge, and the photo shows a display pump. My pump is missing the computer/clock and my question is what the "CSP" denotes? Is is a display pump? The book has a model 612 with a clockface, and so I am confused as to what kind of animal mine is supposed to be.
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Robert Usrey