Checks After Starting Engine; Cooling Water; Warming Up Engine; Warming Up (Manual Start Models) - Yamaha F4A Owner's Manual

6. After the engine starts, slowly return the
manual starter handle to its original po-
sition before releasing it.
7. Slowly return the throttle grip to the fully
closed position.
TIP:
When the engine is cold, it needs to be
●
warmed up. For further information, see
page 32.
If the engine does not start on the first try,
●
repeat the procedure. If the engine fails to
start after 4 or 5 tries, see page 57. Also, if
the engine is warm and fails to start, open
the throttle halfway and try to start the en-
gine 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,
ZMU02670
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.
ZMU02685
Check that no water leaks from the joints be-
tween the exhaust cover, cylinder head, and
body cylinder.
EMU27670
EMU27735

Warming up (Manual start models)

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 throt-
tle or less. After the engine has warmed up,
push the choke knob in fully. Failure to do so
will shorten engine life.
Operation

Warming up engine

ZMU02686
32