Yamaha F150 - Checks after Starting Engine; Cooling Water; Warming up Engine; Electric Start Models

Operation
67
EMU36511
Checks after starting engine
EMU41361
Cooling water
Check for a steady flow of water from the
cooling water pilot hole. A continuous flow of
water from the cooling water pilot hole shows
that the water pump is pumping water
through the cooling water passages.
TIP:
When the engine is started, there may be a
slight delay before water flows from the cool-
ing water pilot hole.
NOTICE
ECM02251
If water is not flowing out of the cooling
water pilot hole at all times while the en-
gine is running, overheating and serious
damage could occur. Stop the engine and
check whether the cooling water inlet on
the lower case or the cooling water pilot
hole is blocked. Consult your Yamaha
dealer if the problem cannot be located
and corrected.
EMU27671
Warming up engine
EMU35265
Electric start models
After the engine has started, warm the engine
up until the engine speed settles at idling
speed.
EMU36532
Checks after engine warm up
EMU36542
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.
EMU41821
Stop switches
Perform the following procedure to check
that the main switch and engine shut-off
switch operate properly.
 Check that the engine stops when the main
switch is turned to the “ ” (off) position,
or press the Start/Stop button.
 Check that the engine stops when the clip
is pulled from the engine shut-off switch.
 Check that the engine cannot be started
with the clip removed from the engine shut-
off switch.
EMU35126
Shifting
WARNING
EWM00181
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
Warm up the engine before shifting into gear.
Until the engine is warm, the idle speed may
be higher than normal. The control lever of
the Digital electronic control can be operated
even at high engine speeds. However, gear
shifting will not work until the engine speed
has automatically decreased to a speed at
which actual gear shifting is possible. As a re-
sult, for quick gear shifting there could be a
time lag when the gear is shifted until the en-
gine speed has decreased sufficiently.
To shift out of neutral
1. Pull the neutral interlock trigger up (if
equipped).
1. Cooling water pilot hole
1
ZMU07766
U6DV37E0.book Page 67 Monday, December 10, 2018 4:07 PM
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