Warming Up Engine; Warming Up; Checks After Engine Warm Up; Shifting - Yamaha F4B Owner's Manual

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1. Cooling water pilot hole
EMU27670

Warming up engine

EMU40070

Warming up

After starting the engine, return the choke
knob to the halfway position. For approxi-
mately the first 5 minutes after starting, warm
up the engine by operating at one fifth throttle
or less. After the engine has warmed up, push
the choke knob in fully. Failure to do so will
shorten engine life.
TIP:
If the choke knob is left pulled out after the
G
engine starts, the engine will stall.
In temperatures of -5°C or less, leave the
G
choke knob pulled out fully for approximate-
ly 30 seconds after starting.
EMU36531

Checks after engine warm up

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Shifting

While the boat is tightly moored, and without
applying throttle, confirm that the engine shifts
smoothly into forward and reverse, and back
to neutral.
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Stop switches

Perform the following procedure to check that
the engine stop switch and engine shut-off
switch operate properly.
Start the engine, and then check that the
G
engine stops when the engine stop button
is pushed.
Restart the engine, and then check that the
G
engine stops when the clip is pulled from
the engine shut-off switch.
Check that the engine cannot be started
G
with the clip removed from the engine shut-
off switch.
ZMU06747
EMU39342
EWM00180
WARNING
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
ECM02220
NOTICE
Before shifting the outboard motor, turn
the throttle grip to the fully closed position
and let the engine speed return to idle
speed. Otherwise, the shift mechanism
could be damaged.
To shift to forward or reverse
Move the gear shift lever to the forward posi-
tion or reverse position.
1. Forward position
2. Neutral position
3. Reverse position
Operation
Shifting
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