Cut out existing 4” sewer main that has a crack in it. - Use repair couplings for a quick swap of the drain line. - Install two three 4” wye fittings use of solid core PVC pipe and fittings. - Repair Additional 3” Fitting that has a rubber coupling that is too large for the repair, it will eventually split. Will need to bore out inside of the fitting and use proper fittings to reattach, Put on new drain line.