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FUEL
1,740
1,720
1,700
1,680
1,660
1,640
1,620
1,600
0
5
10 15 20 25 30
FUEL INJECTION SYSTEM
35 40 45
50
˚
C
o. Measure the throttle position sensor out-
put voltage (DC). Adjust the throttle posi-
tion sensor A position if out of
specification.
Throttle position sensor output
voltage:
Pink (P) – Black/orange (B/O)
0.756 ± 0.016 V
NOTE:
• To decrease the output voltage, turn the
throttle position sensor clockwise.
• Slightly tighten the throttle position screw.
p. Start the engine and let it run at trolling
speed for 20 minutes.
NOTE:
• Warm the engine up in the water.
• While checking the engine temperature
with the Yamaha Diagnostic System,
warm the engine up until the engine tem-
perature is 50 ° C (122 ° F).
q. Adjust the throttle stop screw until trolling
speed is within specification.
Trolling speed:
Season
Temperature
30 °C (86 °F)
Summer
or more
10 °C (50 °F)
Winter
Spring/
20 °C (68 °F)
Fall
r. Adjust each cylinder to the cylinder dif-
ferences shown in the table using syn-
chronizing screws 3– 5 and using
cylinder #2 as the standard.
4-25
Specified
engine speed
1,650 r/min
1,720 r/min
or less
1,680 r/min
E
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