Yamaha F225F Service Manual page 543

Checking the engine oil level
1. Place the outboard motor in an upright
position. NOTICE: If
motor is not level, the oil level indi-
cated on the dipstick may not be cor-
rect.
2. Start the engine and warm it up for 5–10
minutes.
3. Stop the engine and leave it off for 5–10
minutes.
4. Remove the top cowling.
5. Remove the dipstick a and wipe it clean.
6. Insert the dipstick a completely for a
correct measurement and remove it
again.
7. Check that the oil level indicated on the
dipstick a is between the upper mark a
and the lower mark b. If the engine oil is
not at the proper level, add or extract
engine oil.
a
Checking the communication
between the engine and the Digital
Electronic Control
Check the SPS output voltage, shift request,
LPS output voltage, and throttle request that
are displayed on the YDIS engine monitor.
the outboard
a
b
1. Move the control lever to the F, N, and R
positions to check the SPS output volt-
age and shift request in each position.
SPS output voltage:
F position: 0.20–0.79 V
N position: 2.24–2.77 V
R position: 4.21–4.80 V
Shift request:
F position: 100%
N position: 0%
R position: –100%
2. Move the control lever to the F fully open
position, F position, N position, R posi-
tion, and R fully open position, and then
check the LPS output voltage and throttle
request in each position.
LPS output voltage:
F fully open position: 4.41–4.71 V
F position: 2.66–2.92 V
N position: 2.07–2.33 V
R position: 1.47–1.74 V
R fully open position: 0.29–0.59 V
Throttle request:
Fully open F position: 100%
F position, N position, R position: 0%
R Fully open position: 100%
Fail: Over 4.8 V and less than 0.2 V
Predelivery check
10-4
0
1
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10
A