SMF - Just Installed!
I have one of the last wire wheel SJ models 88/89. No external decompressor assembly. I think by that stage they were sharing some of the kit from the Dommie and later GB500. Surprising some of the differences though. I always assumed that the XBR and GB engines were identical - they are very similar but having recently acquired a 89 GB500 I see that the crankcase oil drain plug is on the RHS rather than the left on the XBR. I'll fetch my anorak! LolRegardsTony