CHAPTER 4
4-16
Fuel Vents
Currently, domestic EPA compliant fuel tanks vent fumes back into the
fuel tank system. While the tank is fi lled, air displaced by the incoming
fuel is vented through the fuel system charcoal canister.
Your vessel uses a combo type
(internal vented) fuel fi ll. Both the
fuel fi ll and vent occupy the same
cavity under a protective cover. If
fuel overfl ows through the vent the
design forces it back into the fuel fi ll
hose and tank.
A seasoned skipper will hear a
distinct sound as the tank nears the
“top out” or full mode and may see fuel overfl owing back into the fuel
hose through the vent. DO NOT OVERFILL THE TANK. This helps
avoid any overboard spills which harm the environment. There is a key
that fi ts the fuel fi ll. Use it to secure the fi tting from leaking fuel. Store
the key in a safe place so it can be easily found for fueling. Check the
vent fi ll screen periodically for debris.
COMBO FUEL FILL W/
INTERNAL VENT
The fuel tank feed line use an anti-siphon valve. The valve is threaded
into the fuel tank fi tting at the feed line. The valve is pulled off its
seat by fuel pump pressure as the engine is cranking or running. It
allows a one-way fuel roadway to the engine fuel pump . It prevents
fuel from siphoning out of the tank in the event of a fuel line rupture
or disconnected fuel feed hose. Never remove an anti-siphon valve
as it is a fuel system safety component. Clean or replace a clogged or
stuck anti-siphon valve. Contact your closest Regal dealer or marine
professional for more information.
Anti-Siphon Valve
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