Warming Up Engine; Warming Up; Models) - Yamaha F4 Owner's Manual

Operation
the engine will run poorly or stall.
5. Pull the manual starter handle slowly un-
til you feel resistance. Then give a
strong pull straight out to crank and start
the engine. Repeat if necessary.
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.
NOTE:
When the engine is cold, it needs to be
G
warmed up. For further information, see
page 31.
If the engine does not start on the first try,
G
repeat the procedure. If the engine fails to
start after 4 or 5 tries, see page 59. Also, if
the engine is warm and fails to start, open
the throttle halfway and try to start the en-
gine again.
31
EMU27670
EMU27733
Warming up (Manual start models)
1. After starting the engine, return the
choke knob to the halfway position. For
approximately the first 5 minutes after
starting, warm up the engine by operat-
ing 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.
NOTE:
If the choke knob is left pulled out after the
G
engine starts, the engine will stall.
ZMU02670
In temperatures of -5°C or less, leave the
G
choke knob pulled out fully for approxi-
mately 30 seconds after starting.
2. Check for a steady flow of water from the
cooling water pilot hole.
ECM00511
CAUTION:
A continuous flow of water from the cool-
ing water pilot hole shows that the water
pump is pumping water through the cool-
ing passages. If water is not flowing out
of the hole at all times while the engine is
running, overheating and serious dam-
age could occur. Stop the engine and
check whether the cooling water inlet on
ZMU02685
the lower case or the cooling water pilot
hole is blocked. Consult your Yamaha
dealer if the problem cannot be located
and corrected.

Warming up engine