Ford 2002 F650 Owner's Manual page 200

Maintenance and Specifications
Fuel filter replacement—Caterpillar 3126 B engine
The fuel filter/water separator is
located on the left side of the
engine. Replace the fuel filter/water
separator as recommended in the
Scheduled Maintenance Guide, or
sooner if it becomes plugged.
Vehicles operated on fuel with more
than average impurities may require
replacement of the fuel filter more
frequently. The spin-on filter has a
water drain valve built into the
bottom of the filter canister.
Removal
1. Using an oil filter wrench, remove the filter.
2. Carefully clean the mating surfaces.
Installation
1. Fill the filter with clean, fresh diesel fuel.
2. Coat the filter seal with clean, fresh diesel fuel.
3. Hand-tighten the filter until it seats firmly against the mount, then
tighten (by hand) an additional 1 ⁄ to 1 ⁄ turn.
3 2
4. Start the engine and check for fuel leaks.
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