ENGINE OPERATION
JH Series Operation Manual 57
12/05
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 min
-1
) without
load for 5 minutes.
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.
Figure 4
4. Push and hold the stop switch.
After the engine has stopped, push the
power switch off.
Continue to hold the stop switch in until
the engine is completely stopped. If the
switch is released before the engine
has completely stopped, it may restart.
If the engine does not shut down, see
Emergency Shutdown on page 58 .
5. Turn off the battery switch (if equipped).
6. Close the fuel cock.
7. Close the seacock (if equipped).
•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.
•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).
Start switch
Stop switch
Power switch
042590-00E02
JH5_EN_OPM.book 57 ページ 2013年8月8日 木曜日 午前9時23分