y-Axis tooth belt

[MartenKL]

In Instruction_Manual_of_Felix_1_5b_v2.pdf page 12. Last Illustration and text; the M4x25 bolt is too long for the order bearing, bearing, small washer, plastic part, small washer, self-locking nut. It also is different from first image second column on page 14. What am I misunderstanding?

[satoer]

The manual has a lot of old legacy pictures from the Felix 1.0 and early felix 1.5 version. The picture on page 14 is the old way, but sometimes the belt grinds along the big washer. So Felix printers updated the design with an extra bearing on top of the first one, and remove the big washers. So, just use a M4 bold that fits: bearing, bearing, small washer, plastic part, small washer, self-locking nut.