Below is my original posting I am about to attempt to replace the fuel pump on my 850 series this weekend....I need your help what direction will I be turning to take off the plastic retainer? Also what tool would you guys recommend to take it off? And last question does the wiring on top come off? ...

I am planning on replacing a fuel pump on a 1993 850 series volvo, I am pretty handy with doing mechanic work that isn't a problem but, i have never replaced a fuel pump before. Can anyone tell me before I tackle this project what tools are needed? And what will I be encountering? Thanks for your re...