Checking The Outboard Motor Mounting Height; Checking The Power Trim And Tilt Unit; Checking The Hydro Tilt Unit - Yamaha F30B 2018 Service Manual

Checking the outboard motor mount-
ing height
1. Check:
• Outboard motor mounting height
Improper  Adjust.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Check that the anti-cavitation plate "1" is
aligned with the bottom of the boat "2".
TIP:
• If the mounting height is too high, cavitation
will occur and propulsion will decrease. Be-
sides, the engine speed will increase abnor-
mally and cause the engine to overheat.
• If the mounting height is too low, water resis-
tance will increase, which will decrease en-
gine efficiency and performance.
• The appropriate mounting height depends on
the combination of the boat and outboard mo-
tor. To determine the appropriate mounting
height, test run the outboard motor at differ-
ent heights.
2
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Check:
• Mount bolts
Loosen  Tighten.

Checking the power trim and tilt unit

1. Check:
• Power trim and tilt unit
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Check that there is no abnormal noise pro-
b. Check that there is no interference with ca-
c. Check that the trim meter, on the boat's
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

Checking the hydro tilt unit

1. Check:
• Hydro tilt unit operation
1
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Check that the outboard motor tilts up and
10-9
Abnormal noise  Check the PTT unit.
Interference  Check the hose and wire
harness routing, or mounting of the out-
board motor.
Does not display  Adjust the trim sensor
cam. See "Adjusting the trim sensor cam"
(9-31).
duced when the outboard motor is tilted up
or down.
bles, hoses, leads, or the boat when the
tilted-up outboard motor is steered.
gauge, displays full down when the out-
board motor is in the full-down position.
Not operate  Replace.
down smoothly when the tilt lock lever "1"
is in the release position "a".
1
Predelivery check
a