Tyler Bell

I have a Husqvarna YTH20b42 tractor.  The product number is 960430032.    When I type in YTH20b42 on Husqvarna manual / part search  it brings up YTH20b42T.  The Yth 20b42t has an electric pto clutch, while mine just has the lever.  So where is the normal YTH20b42 ? And when I type in 960430032 it brings up a mower that looks different and says it was made in 2007 while mine has a sticker that says it was made in Dec 2006.  So why is it so hard to find the YTh20b42?

Thanks