Restarting After Starting Failure; Starting At Low Temperatures - Yanmar 3JH4E Operation Manual

6. Turn key switch to START
(Figure 1, (4)). Release the key switch
when the engine has started. NOTICE:
NEVER hold the key in the START
position for longer than 15 seconds or
the starter motor will overheat.
7. The alarm should stop and the
indicators should go out. NOTICE: If
any indicator fails to illuminate when the
key switch is in the ON position, see
your authorized Yanmar marine dealer
or distributor for service before
operating the engine.
Note: When the engine has not been used
for a long period of time, check that the key
can move from the START position to the
ON position smoothly.

Restarting After Starting Failure

Before turning the key switch again, be sure
to confirm that the engine has stopped
completely. If an attempt to restart is made
while the engine is running, the pinion gear
of the starter motor will be damaged.
NOTICE: NEVER hold the key in the START
position for longer than 15 seconds or the
starter motor will overheat.
NOTICE: NEVER attempt to restart the
engine if the engine has not stopped
completely. Pinion gear and starter motor
damage will occur.
Air Bleeding the Fuel System After
Starting Failure
If the engine does not start after several
attempts, there may be air in the fuel system.
If air is in the fuel system, fuel cannot reach
the fuel injection pump. Bleed the air out of
the system. See Bleeding the Fuel System
on page 30.
JH4 Series Operation Manual
ENGINE OPERATION

Starting at Low Temperatures

Comply with local environmental
requirements. Use engine heaters to avoid
starting problems and white smoke. Do not
use starting aids. NOTICE: NEVER use an
engine starting aid such as ether. Engine
damage will result.
To limit white smoke, run the engine at low
speed and under moderate load until the
engine reaches normal operating
temperature. A light load on a cold engine
provides better combustion and faster
engine warm-up than no load.
Avoid running the engine at idling speed any
longer than necessary.
Starting with Air Heater (If
Equipped)
1. Open the seacock (if equipped).
2. Open the fuel tank cock.
3. Put remote control handle in
NEUTRAL.
4. Turn the battery master switch (if
equipped) ON.
5. Turn key switch to GLOW for 15
seconds.
6. Turn key switch to ON. Ensure that the
instrument panel indicators light and
the alarm sounds. This shows that
indicators and alarm are working
correctly.
Note: The coolant high temperature alarm
indicator does not come on during start-up.
7. Turn key switch to START. Release the
key switch when the engine has started.
The alarm should stop and the
indicators should go out. NOTICE:
NEVER hold the key in the START
position for longer than 15 seconds or
the starter motor will overheat.
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