Heavy-Duty Fuel Precleaner Filter (Optional)—Flushing

1. 
   H100500-UN-29JUN11

   A - Bleed Screw

   B - Drain Valve

   Do not clean fuel precleaner and change primary and secondary fuel filters at the same time. Doing so makes it difficult to restart machine. Perform this procedure, then run engine before changing primary and secondary fuel filters.

   Heavy-duty fuel precleaner should be back flushed whenever bowl is half full of water or when diagnostic code appears. Reset code after cleaning. If code still displays, see Heavy-Duty Fuel Precleaner Filter (Optional)—Replacing and Cleaning.

   Filter element can be back flushed up to five times before being replaced.

   Shut OFF engine and close valve at bottom of the fuel tank.

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2. Open bleed screw (A) on top of the water separator. Allow water and dirt to be released from filter element and settle in bottom of bowl.

3. Push in on the drain valve (B) and turn counterclockwise to drain water and dirt from bowl.

   As fuel, water, and dirt are drained from bowl, more water and dirt are flushed from filter element and collect in bottom of bowl.

4. Close drain valve and allow water and dirt to settle again.

5. Repeat steps 3 and 4 until all dirt and water is removed.

6. Close bleed screw and open valve at bottom of the fuel tank.

7. Turn key switch ON for 60 seconds to allow fuel pump to prime the fuel system and check for leaks.

8. Start engine and run 3—5 minutes at low idle. If engine does not start or dies, see Primary and Secondary Fuel Filter Element—Replacing.