Shutting Down The Engine; Normal Shutdown; Emergency Shutdown - Yanmar 3JH5E Operation Manual

ENGINE OPERATION
SHUTTING DOWN THE
ENGINE

Normal Shutdown

1. Reduce engine speed to low idle and
put remote control handle in NEUTRAL.
2. Accelerate from low speed to high
speed and repeat five times. This will
clean out the carbon from the cylinders
and the fuel injection nozzles.
3. Allow engine to run at low speed
(approximately 1000 rpm) without load
for 5 minutes. NOTICE: For maximum
engine life, Yanmar recommends that
when shutting the engine down, you
allow the engine to idle, without load, for
5 minutes. This will allow the engine
components that operate at high
temperatures, such as the turbocharger
(if equipped) and exhaust system, to
cool slightly before the engine itself is
shut down.
(1)
Figure 4
4. With the key in the ON position, push
and hold the STOP button
(Figure 4, (1)). After the engine has
stopped, turn the key switch to OFF.
NOTICE: Continue to hold the STOP
button in until the engine is completely
stopped. If the button is released before
the engine has completely stopped, it
may restart. If the engine does not shut
down, see Emergency Shutdown on
page 52.
5. Remove the key and cover the key
switch with the moisture cap.
52
6. Turn off the battery master switch (if
7. Close the fuel cock.
8. Close the seacock (if equipped).

Emergency Shutdown

NOTICE: NEVER use the emergency stop
switch for a normal engine shutdown. Use
this switch only when stopping the engine
suddenly in an emergency.
0004487
If the engine cannot be shut down by the
STOP button on the panel, stop the engine
by pushing the button (Figure 5, (1)) at the
back of the stop solenoid (Figure 5, (2)).
© 2009 Yanmar Marine International
equipped).
NOTICE: Be sure to close the seacock.
Neglecting to close the seacock could
allow water to leak into the boat and may
cause it to sink. NOTICE: If seawater is
left inside the engine, it may freeze and
damage parts of the cooling system
when the ambient temperature is below
0°C (32°F).
3JH5E / 4JH5E
(2)
(1)
Figure 5
JH Series Operation Manual
027092-00X