Shimano 7 speed STI's Help
Could someone please help? All my bikes are fitted with Campagnolo groupsets of which I am farmiliar, however I have voulenteered myself to fix my dad's bike that is fitted with 7 speed Shimano. I don't even know which type because it is partially worn away it looks something like "FSR" I appreciate that they are not servicable but how do I get them apart to check/change the cables? They have an allen bolt in the front, but I think that I read somewhere not to remove this, but I can't find anything else even under the hood.