Yamaha WaveRunner FX140 Service Manual page 102

FUEL
9
B/O
P
FUEL INJECTION SYSTEM
0
A
B
NOTE:
For best results, use a vacuum gauge
(commercially obtainable), like 9 or 0
shown in the illustration, that has four
adapters.
È For USA and Canada
É For worldwide
i. Install the throttle bodies.
NOTE:
Adjust the throttle body synchronization
with the air filter case uninstalled.
j. Connect the fuel hose and clamp.
k. Connect the Yamaha Diagnostic Sys-
tem.
l. Remove the sub wire harness from the
air filter case, and then connect it to the
throttle bodies and main wire harness.
m. Connect the test harness (3 pin) to the
throttle position sensor A.
Test harness (3 pins):
YB-06793/90890-06793
n. To start the ECM normally, start the
Yamaha Diagnostic System.
CAUTION:
If the Yamaha Diagnostic System and
ECU are started, fuel can spurt out. Be
sure to connect the fuel hoses and throt-
tle bodies when adjusting the throttle
position sensor.
NOTE:
Use the test connector B to start the ECU
normally only if the Yamaha Diagnostic
System is not available.
Test connector:
YW-06862/90890-06862
o. Measure the throttle position sensor out-
put voltage (DC). Adjust the throttle posi-
tion sensor A position if out of
specification.
4-23
E