WARNING  Fuel is flammable. Keep all cigarettes, flames, pilot lights, arcing equipment, and switches out of the work area and areas sharing ventilation to avoid severe personal injury or death when working on the fuel system.

Clean the area around the fuel filter head and filter.

Remove the fuel filter with filter wrench, Part No. 3376807.

Remove the thread adapter sealing ring (1).

Use a clean, lint-free towel to clean the filter head gasket surface.

Use the correct filter(s) for your engine. Cummins Engine Company, Inc. requires a fuel-water separator be installed in the fuel supply system. It must remove a minimum of 94 percent of free water (per SAE J1839) and 88 percent of emulsified water (per SAE J1488).

Fuel-Water Separator (Superfilter)

Cummins, Part No. 3889716

Fleetguard®, Part No. FS-1000

Install a new thread adapter sealing ring supplied with the new filter. Apply a light coating of clean engine oil to the filter gasket surface.

Fill the filter(s) with clean fuel.

CAUTION  Mechanical overtightening of the filter can distort the threads or damage the filter element seal.

Install the filter on the filter head. Turn the filter until the gasket contacts the filter head surface.

Tighten the filter an additional one-half to three-fourths of a turn after the gasket contacts the filter head surface, or as specified by the filter manufacturer.