That plate, item 5, is what locates the back of the seat so I can see how it would be very loose and not very safe without it. The plate goes under the metal cross piece just in front of the plastic tail piece.
There should be two screwed pieces sticking out of the seat where that plate attaches to. 6mm dia and sticking out 10mm.
I would have thought any breaker of a 600 fazer would be able to supply you with one as it is not something that gets damaged and would not detract from selling a seat.
If you are handy with metal you could easily make one from a piece of say 2 or 2.5mm sheet. 50mm wide and 65mm long with a 30 degree bend in it 25mm from the short edge. You then need two holes 12mm from the same edge to fit over the screwed fixings. The nuts, item 4, are just 6mm flanged nuts but plain nuts with a washer will do just as well.
Someone may pop along on here with a spare one. If not and you are still struggling let me know I will make you one.
If the two 6mm threaded pieces have been pulled out then more serious work would be needed. I think they are attached to a metal plate under the plastic seat base.
There should be two screwed pieces sticking out of the seat where that plate attaches to. 6mm dia and sticking out 10mm.
I would have thought any breaker of a 600 fazer would be able to supply you with one as it is not something that gets damaged and would not detract from selling a seat.
If you are handy with metal you could easily make one from a piece of say 2 or 2.5mm sheet. 50mm wide and 65mm long with a 30 degree bend in it 25mm from the short edge. You then need two holes 12mm from the same edge to fit over the screwed fixings. The nuts, item 4, are just 6mm flanged nuts but plain nuts with a washer will do just as well.
Someone may pop along on here with a spare one. If not and you are still struggling let me know I will make you one.
If the two 6mm threaded pieces have been pulled out then more serious work would be needed. I think they are attached to a metal plate under the plastic seat base.