Yamaha 90D, Owner'S Manual

Page: 35 / 77

Operation
30
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Stopping engine
Before stopping the engine, first let it cool off
for a few minutes at idle or low speed. Stop-
ping the engine immediately after operating
at high speed is not recommended.
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Procedure
1. Push and hold the engine stop button or
turn the main switch to “
” (off).
2. After stopping the engine, disconnect
the fuel line if there is a fuel joint on the
outboard motor.
3. Tighten the air vent screw on the fuel
tank cap (if equipped).
4. Remove the key if the boat will be left
unattended.
NOTE:
The engine can also be stopped by pulling
the lanyard and removing the lock plate from
the engine stop switch, then turning the main
switch to “ ” (off).
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Trimming outboard motor
The trim angle of the outboard motor helps
determine the position of the bow of the boat
in the water. Correct trim angle will help im-
prove performance and fuel economy while
reducing strain on the engine. Correct trim
angle depends upon the combination of
boat, engine, and propeller. Correct trim is
also affected by variables such as the load in
the boat, sea conditions, and running speed.
WARNING
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Excessive trim for the operating condi-
tions (either trim up or trim down) can
cause boat instability and can make
steering the boat more difficult. This in-
creases the possibility of an accident. If
the boat begins to feel unstable or is hard
to steer, slow down and/or readjust the
trim angle.
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