Yamaha F225A Service Manual page 92

FUEL
Test harness (3 pins): 90890-06793
10. Turn the engine start switch to ON.
11. Measure the throttle position sensor out-
put voltage. Adjust the throttle position
sensor B position if out of specification.
Digital circuit tester: 90890-03174
Throttle position sensor output
voltage:
Pink (P) – Black (B)
660 ± 5 mV
12. Tighten the synchronizing screw 6 of
cylinder #3 and stop tightening it when
the throttle position sensor output voltage
starts to change. Similarly, tighten and
adjust the synchronizing screw 7 of cyl-
inder #5.
4-17
Fuel system
13. Tighten the starboard throttle stop screw
4 until the output voltage is adjusted to
specification as mentioned in step 11,
plus 40 mV.
Throttle position sensor output
voltage:
Pink (P) – Black (B)
700 ± 5 mV
14. Attach a synchronizing check tool C as
shown to the port #2 throttle body (to
facilitate the monitoring of the throttle
plate D movement).
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