I need some instructions how to replace the fuel plastic fuel lines and o rings on 1998 Mercedes-Benz E300

There is some fuel leaking around the plastic low pressure lines, still running but need to fix soon. I've heard this is a common problem, but am afrid to attempt without some help.

Asked by for the 1998 Mercedes-Benz E300
try napa has a fuel line repair kit avail
Thanks for your timely reply. I will try napa.