Checking The Fuel Pressure - Yamaha FZ09E Service Manual

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a. Connect the injector pressure adapter "1" to
the fuel rail joint "2'', and then connect an air
compressor "3" to the adapter.
b. Connect the pressure gauge "4" to the injec-
tor pressure adapter "1 ".
Pressure gauge
90890-03153
YU-03153
Fuel injector pressure adapter
90890-03210
YU-03210
4
1
3
~- 2
c. Close the valve on the injector pressure
adapter.
d. Apply air pressure with the air compressor.
e. Open the valve on the injector pressure
adapter until the specified pressure is
reached.
Specified air pressure
490 kPa (5.0 kgf/cm
2
,
71 .1 psi)
£CA1RCl106
NOTICE
~~~~~~~~~~~~~
Never exceed the specified air pressure or
damage could occur.
f. Close the valve on the injector pressure
adapter.
g. Check that the specified air pressure is held
at least one minute.
Pressure drops
~
Check the pressure gauge
and adapter.
Check the seals and 0 -rings and then rein-
stall.
Out of specification
~
Replace the fuel injec-
tors.
EA$1AC17®
CHECKING THE FUEL PRESSURE
1. Check:
• Fuel pressure
7-11
THROTILE BODIES
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a. Remove the rider seat, air scoop and fuel
tank cover.
Refer to "GENERAL CHASSIS" on page 4-1.
b. Remove the fuel tank bolt and hold up the fuel
tank.
c. Disconnect the fuel hose "1" from the fuel
pump.
Refer to "REMOVING THE FUEL TANK" on
page 7-3.
fWA1 RC11(l2
~WARNING
Cover fuel hose connection with a cloth
when disconnecting them. Residual pres-
sure in the fuel lines could cause fuel to
spurt out when removing the hose.
ECA.1RC1101
NOTICE
Be sure to disconnect the fuel hose by hand.
Do not forcefully disconnect the hose with
tools.
d. Connect the pressure gauge "2" and fuel
pressure adapter "3" to the fuel hose.
Pressure gauge
90890-03153
YU-03153
Fuel pressure adapter
90890-03176
YM-03176
e. Start the engine.
f. Measure the fuel pressure.