Shutting Down The Engine; Emergency Shutdown - Yanmar 3JH4E Operation Manual

ENGINE OPERATION
SHUTTING DOWN THE
ENGINE
NOTICE: Avoid engine damage. Do not stop
engine abruptly during operation. Yanmar
recommends that when shutting the engine
down, allow the engine to run, without load,
for 5 minutes. This will allow the engine
components that operate at high
temperatures, such as the exhaust system,
to cool slightly before the engine itself is shut
down.
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.
(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.
Note: 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 48.
5. Remove the key and cover the key
switch with the moisture cap.
48
6.
7.
8.

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.
If the engine cannot be shut down by the
STOP button on the panel, stop the engine
0004487
by pushing the button (Figure 5, (1)) at the
back of the stop solenoid (Figure 5, (2)).
Turn off the battery master switch (if
equipped).
Close the fuel cock.
Close the seacock (if 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.
3JH4E / 4JH4AE
(1)
Figure 5
4JH4-TE / 4JH4-HTE
(1)
Figure 6
JH4 Series Operation Manual
(2) 0003624
(2)
0004488