Yamaha F200B Service Manual

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10. Connect the engine ECM coupler.
NOTICE: Make sure that the rubber
seal is installed properly in the engine
ECM coupler.
11. Install the engine ECM, and then tighten
the engine ECM bolts to the specified
torque.
12. Install the engine ECM cover.
13. Connect the pulser coil coupler.
14. Install the flywheel magnet cover.
Checking the air temperature sensor
1. Measure the ambient temperature.
2. Connect the YDIS to display “Intake tem-
perature” (air temperature).
3. Check that the difference between the
ambient temperature and the displayed
intake temperature is within ± 5 °C (± 41
°F).
TIP:
• Check the air temperature sensor when the
engine is cold.
• When checking the air temperature sensor,
remove the top cowling and do not start the
engine.
4. Remove the flywheel magnet cover.
5. Disconnect the air temperature sensor
coupler a.
6. Turn the engine start switch to ON, and
then measure the input voltage at the air
temperature sensor coupler.
7. Turn the engine start switch to OFF.
8. Remove the air temperature sensor.
9. Place the air temperature sensor in a
container of water and heat the water
slowly.
10. Measure the air temperature sensor
resistance at the specified temperatures.
11. Install the air temperature sensor.
12. Remove the engine ECM cover.
13. Remove the engine ECM, and then dis-
connect the engine ECM coupler b.
Wiring harness continuity:
a Terminal 1–b Terminal 15
a Terminal 2–b Terminal 16
Engine ECM bolt:
7 N·m (0.7 kgf·m, 5.2 ft·lb)
Air temperature sensor input voltage:
Black/Yellow (B/Y)–Black (B)
4.75–5.25 V
Air temperature sensor resistance
(reference data):
2.21–2.69 kΩ at 20 °C (68 °F)
0.32 kΩ at 80 °C (176 °F)
B
B/Y
a
Ignition unit and component

Yamaha F200B Specifications

General

Brand	Yamaha
Model	F200B
Category	Outboard Motor
Language	English