Checking The Pressure Regulator - SELVA MARINE Blue Whale 250 EFI Service Manual

Checking the pressure regulator

1. Disconnect the quick connector from the
vapor separator.
NOTE:
Before disconnecting the quick connector,
reduce the fuel pressure.
2. Connect fuel pressure gauge adapter B
between the quick connector and vapor
separator.
3. Connect the fuel pressure gauge to fuel
pressure gauge adapter B.
4. Disconnect the pressure regulator hose,
and then connect the special service tool
to the pressure regulator.
WARNING
• Gently screw in the gauge until it is
firmly connected to prevent fuel from
leaking out.
• Before measuring the fuel pressure,
make sure that the drain screw is tight-
ened securely.
• Do not loosen the drain screw while
measuring the fuel pressure. Loosening
the drain screw can cause fuel to spray
out creating a fire hazard.
6P23H11
5. Start the engine and let it idle.
6. Check that the fuel pressure reduces
when vacuum pressure is applied to the
pressure regulator. If the fuel pressure
does not reduce, replace the pressure
regulator.
NOTE:
When the specified vacuum pressure is
reached, the pressure regulator is operated
and the fuel pressure is reduced.
7. Reduce the fuel pressure.
8. Remove the special service tools.
WARNING
• After measuring the fuel pressure, cover
the end of the hose with a clean, dry rag,
point the hose downward, and then
loosen the drain screw to drain the
remaining fuel from the hose and gauge.
• When storing the fuel pressure gauge,
S6P24300E
make sure that the drain screw is tight-
ened securely.
9. Connect the pressure regulator hose and
quick connector.
Fuel pressure gauge: 90890-06786
Fuel pressure gauge adapter B:
90890-06942
Vacuum/pressure pump gauge set:
90890-06756
Hose routing
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