© 5/2013 Ilmor Marine, LLC, Version 1.0 7-7
MAINTENANCE
REPLACE THE HIGH-PRESSURE FUEL
FILTER
WARNING! Always allow the engine to cool down completely before
attempting to service the high-pressure fuel lter in order to avoid re
or explosion.
WARNING! Always be sure that the ignition key is in the OFF position,
the main battery power switch is in the OFF position, and that no spark
or ame are present when servicing the high-pressure fuel lter.
WARNING! Always use the special tools to replace the high-pressure
fuel lter. Do not attempt to replace fuel lter without special tools.
Doing so may damage fuel line or lter. A damaged fuel line or lter
may leak and cause a re or explosion.
NOTE: System may be pressurized. It is a good idea to perform the high-
pressure fuel lter service and the fuel/water separator service together. Aer
removing the fuel/water separator, the system will be “open” and this is an
optimal time to remove the high-pressure fuel lter. Install new lters as
instructed in the following procedure.
1. Be sure that the key is in the OFF position and that the engine is
completely cooled down.
2. Close the fuel supply valve, if applicable.
3. Locate the in-line high-pressure fuel lter. Before removal, note the
direction of ow on lter by referencing the black arrow on the lter
body.
4. Using a 3/8" automotive-style, quick-disconnect fuel line tool (must be
plastic version), carefully remove one fuel line. e tool may need to
be split in half for easier removal. If possible, let lter drain into a small
pan or bucket before removing the second fuel line.
5. Remove the second fuel line and properly dispose of lter and excess
drained fuel.
6. Visually inspect fuel line ends to make sure internal o-rings are still
in place, retaining clips are not bent, and no visual obstructions are
present. If any components appear to be worn or damaged, contact
your authorized Ilmor service center for additional assistance.
7. Install new high-pressure fuel lter, in the previously noted ow
direction, inside the mounting clip on the engine.
8. Install both fuel lines onto the new lter. e lines will click when fully
engaged.
9. Once system is fully reassembled, with the bilge blowers running, cycle
ignition (letting the fuel pump run a full cycle) 3–5 times to prime fuel
system and check for leaks. ere is no need to start the engine as 3–5
ignition cycles will prime the fuel system.
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