Hi all, Beware that all 600-900ss carby seats are not interchangeable. The seats with the 'pin' mechanism to attach them to the lock are longer than the ones with the 'bar' mechanism. I have been caught out with this one. The 'pin' lock plastic is shorter to accommodate the longer seat and therefore does not fit both sides of the handrail. I have uploaded a picture of the later type Also, the very early 1991 seats are too 'plump' to allow the plastic pillion seat cover to fit (well mine is)
I have also tried this before, the part numers underneath are different, even though the catch can be swapped
Notwithstanding being able to change the locking mechanism over, the earlier seats were also different from the later ones (about 1995) underneath where they sit on the frame - IIRC, the main difference is that the later ones had rubber bungs mid-way along each side underneath to stop the seats from breaking across the middle, roughly where the 'bend' is.