Yamaha F75F - Disconnecting the Quick Connector; Reducing the Fuel Pressure

Fuel system
6-1
Fuel system
Reducing the fuel pressure
Before servicing the high-pressure fuel line
or vapor separator, make sure to reduce
the fuel pressure in the fuel line. Otherwise,
pressurized fuel could spray out.
1. Reduce:
• Fuel pressure
a. Disconnect the high-pressure fuel
pump coup
ler “a”.
b. Start the engine.
After disconnecting the high-pressure fuel
pump coupler, wait until the engine stalls.
c. After the engine stalls, crank the en-
gine 2 or 3 times.
d. Turn the engine start switch to OFF.
e. Connect the high-pressure fuel pump
coupler.
Disconnecting the quick connector
Before disconnecting the quick connector,
reduce the fuel pressure. Otherwise, pres
-
surized fuel could spray out.
Cover the fuel components using a rag to pre-
vent fuel from spilling out.
1. Disconnect:
• Quick connector
a. Reduce the fuel pressure. See “Re-
ducing the fuel pressure” (6-1).
b. Wrap a rag around the quick connec-
tors “1”.
c. Disconnect the quick connectors “1”.
Cover the quick connectors, fuel rail, and vapor
separator with a plastic bag to prevent damage
and dirt from entering them.
d. Wrap a rag around the quick connec-
tor “1”, and then push the quick con-
nector tab “a” toward the stopper “b”.
Do not push the quick connector tab past
the stopper. Otherwise, the quick connec
-
tor could be damaged.
e. Disconnect the quick connector “1”.
a
1
1
b
a