It's like this: The first digit is always a 9 as since 1989 they have been 9000 series Maximizer combines. The second digit refers to its size. For example a 9500, 9510, 9550, 9560 are all class 5 machines. The last two digits refer to the age of the unit. When they first came out, the were the 00. After came the 10 series, then 50, now 60. The next generation, unless they change the scheme, will be 70 series with models like the 9570, 9670, 9770, 9870 etc. The interesting one is the CTS. They did not follow this logic as they were only available in one size. When they upgraded the walker machine to 9610, they renamed the CTS a CTSII, kind of like the Titan II heritage. With the introduction of the 50 series they were adding the STS and they knew there would be confusion. They decided to clean this up. Since the CTSII was closest to a class 6 machine, they gave the unit a 9 for Maximizer, a 6 for class 6 and a 50 series for the fact that it was in line with the rest of the 50 series group. They then had to add the CTS tag on to the end to indicate what type of combine it is as well. The CTSII therefore became the 9650 CTS. They did the same for the STS. Since the STS came in two sizes, there was a class 6 9650STS and a 9750STS. i.e. 9 = Maximizer, 6 = class 6, 50 = 50 series, and CTS = cylinder tine seperator or 9 = Maximizer, 7 = class 7, 60 = 60 series, STS = single tine seperator. Clear as mudIJ
