Yamaha F30B 2018, Service Manual

Page: 319 / 348

10-14
General periodic maintenance
Checking the engine idle speed/noise
1. Check:
• Engine idling speed
Out of specification

Perform the trouble-
shooting procedures. See “Troubleshoot-
ing procedure” (4-3).
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Check the engine idle speed using the
YDIS. See the YDIS (Ver. 2.33 or later) in-
struction manual.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Checking the cooling water inlet
1. Check:
• Cooling water inlet
Clogged

Clean.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Remove the water inlet covers “1”.
b. Mark the trim tab “2” with an identification
mark “a”, and then remove the trim tab “2”.
c. Check the water inlet covers and water in-
lets. Clean if clogged.
d. Install the water inlet covers “1” and trim
tab “2”, and then tighten the water inlet
cover screw “3” to the specified torque.
TIP:
After installing the water inlet covers “1”, make
sure that there is no rattling.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Changing the engine oil using an oil
changer
Change the engine oil after the first 20
hours of operation or
3 months, and every
100 hours or at 1-year intervals thereafter.
1. Warm up:
• Engine
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Place the outboard motor in an upright po-
sition.
If the outboard motor is not level, the oil lev-
el indicated on the dipstick may not be cor-
rect.
b. Start the engine and warm it up for 5–10
minutes.
c. Stop the engine and leave it off for 5–10
minutes.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Remove:
• Top cowling
Idle speed (in neutral)
750–850 r/min
1
1
3
Water inlet cover screw “3”
1.0 N·m (0.10 kgf·m, 0.73 lb·ft)
2
a
T
R
.
.