Fuel filter for Mercedes 500 SEL 1985, where is it?

I bought an old mercedes and want to change the fuel filter and don't know where to find it. Do you know where it is? Also, do you know how to adjust the idle speed? Where the fuel pump is located? Thanks. I am waiting for my manual to come for that car.Fuel filter for Mercedes 500 SEL 1985, where is it?fuel filter Under vehicle, passenger side, below seating area, front of fuel tank, mounted on frame in fuel line

the pump is i would guess is in the tank or its a in line i cant remember when the went to efi look on autozone.com and there is free repair guides and trouble shooting thats where i got the fuel filter info

how can i restadeletehedge

advice about asking a girl out