Adjusting Trim Angle (Power Tilt Models); Adjusting Boat Trim - Yamaha F9.9J Owner's Manual

Make test runs with the trim set to different an-
gles to find the position that works best for
your boat and operating conditions.
EWM00400
WARNING
Stop the engine before adjusting the
●
trim angle.
Use care to avoid being pinched when
●
removing or installing the rod.
Use caution when trying a trim position
●
for the first time. Increase speed gradu-
ally and watch for any signs of instability
or control problems. Improper trim an-
gle can cause loss of control.
TIP:
The outboard motor trim angle can be
changed approximately 4 degrees by shifting
the trim rod one hole.
EMU27905
Adjusting trim angle (power tilt mod-
els)
EWM00753
WARNING
Be sure all people are clear of the out-
●
board motor when adjusting the trim an-
gle. Body parts can be crushed between
the motor and the clamp bracket when
the motor is trimmed or tilted.
Use caution when trying a trim position
●
for the first time. Increase speed gradu-
ally and watch for any signs of instability
or control problems. Improper trim an-
gle can cause loss of control.
If equipped with a power trim and tilt
●
switch located on the bottom cowling,
use the switch only when the boat is at a
complete stop with the engine off. Do
not adjust the trim angle with this switch
while the boat is moving.
1. Move the gear shift lever to the neutral
position.
TIP:
While the boat is moving, it may be difficult to
adjust the trim angle due to water pressure.
Before adjusting the trim angle, reduce the
boat speed and shift into neutral.
2. Tilt the outboard motor to the desired an-
gle using the power tilt switch.
To raise the bow ("trim-out"), tilt the outboard
motor up.
To lower the bow ("trim-in"), tilt the outboard
motor down.
Make test runs with the trim set to different an-
gles to find the position that works best for
your boat and operating conditions.
TIP:
Stay within the trim operating angle when
trimming the outboard motor using the power
tilt system.
EMU27912

Adjusting boat trim

When the boat is on plane, a bow-up attitude
results in less drag, greater stability and effi-
ciency. This is generally when the keel line of
the boat is up about 3 to 5 degrees. With the
bow up, the boat may have a greater tenden-
cy to steer to one side or the other. Compen-
sate for this as you steer. When the bow of the
boat is down, it is easier to accelerate from a
standing start onto plane.
Operation
47