Arml,
The D in B7100D is for Diesel. I think the e on your B5100e indicates 2WD.
Anyway, the weight is removable and removed in the pics attached.
I have three bolt holes that mount the unit to each side of the tractor.
I believe the pto output shaft would bolt to the front plate (which mine has 8 holes)
See the following pics
Pic 1 - Showing a side pic with 3 bolt holes for the unit to mount to
Pic 2 - Showing PTO spline end (18MM x 22 tooth) (where the front pto shaft would slide onto - then bolt onto the front plate in pic 3)
Pic 3 - Showing the front mounting plate/bumper with 8 holes (in the middle of pic 3 you can make out a portion of the pto output spline from pic 2)
Hopefully that makes sense?
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