Checks After Starting Engine; Cooling Water; Warming Up Engine; Choke Start Models - Yamaha 20D Owner's Manual

7. Immediately after the engine starts, re-
lease the main switch and allow it to re-
turn to " " (on). NOTICE: Never turn
the main switch to "
while the engine is running. Do not
keep the starter motor turning for
more than 5 seconds. If the starter
motor is turned continuously for
more than 5 seconds, the battery will
be quickly discharged, thus making it
impossible to start the engine. The
starter can also be damaged. If the
engine will not start after 5 seconds
of cranking, return the main switch to
" " (on), wait 10 seconds, then
crank the engine again.
EMU36510

Checks after starting engine

EMU36520

Cooling water

Check for a steady flow of water from the
cooling water pilot hole. A continuous flow of
water from the pilot hole shows that the wa-
ter pump is pumping water through the cool-
ing passages. If the cooling passages are
frozen, it may take a while for water to start
flowing out of the pilot hole.
ECM01810
NOTICE
If water is not flowing out of the pilot hole
at all times while the engine is running,
overheating and serious damage could
occur. Stop the engine and check wheth-
er 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 cor-
rected.
" (start)
Check that no water leaks from the joints be-
tween the exhaust cover, cylinder head, and
body cylinder.
EMU27670
EMU27683
[ECM00192]

Choke start models

After starting the engine, allow it to idle for 3
minutes to warm up. Failure to do so will
shorten engine life. Gradually return the
choke knob to its home position as the en-
gine warms up.
EMU36530

Checks after engine warm-up

EMU36540

Shifting

While tightly moored, and without applying
throttle, confirm that the engine shifts
smoothly into forward and reverse, and back
to neutral.
EMU31721

Stop switches

G
G
G

Warming up engine

Confirm that turning the main switch to the
" " (off) position stops the engine.
Confirm that removing the clip from the en-
gine shut-off switch stops the engine.
Confirm that the engine cannot be started
with the clip removed from the engine
shut-off switch.
Operation
ZMU02968
38