Yanmar 3JH4E, Operation Manual

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NOTICE
If any indicator illuminates during engine
operation, stop the engine immediately.
Determine the cause and repair the problem
before you continue to operate the engine.
If the alarm window with audible alarm fails
to display and go out about 3 seconds later
when the ignition switch is in the ON
position, see your authorized Yanmar
marine dealer or distributor for service
before operating the engine.
Observe the following environmental
operating conditions to maintain engine
performance and avoid premature engine
wear:
• Avoid operating in extremely dusty
conditions.
• Avoid operating in the presence of
chemical gases or fumes.
• NEVER run the engine if the ambient
temperature is above +40˚C (+104˚F) or
below -16˚C (+5˚F).
• If the ambient temperature exceeds
+40˚C (+104˚F), the engine may overheat
and cause the engine oil to break down.
• If the ambient temperature is below -16˚C
(+5˚F), rubber components such as
gaskets and seals will harden causing
premature engine wear and damage.
• Contact your authorized Yanmar marine
engine dealer or distributor if the engine
will be operated outside of this standard
temperature range.
NEVER engage the starter motor while the
engine is running. Damage to the starter
motor pinion and / or ring gear will result.
STARTING THE ENGINE
NOTICE: If the vessel is equipped with a
water lift (water lock) muffler, excessive
cranking could cause sea water to enter the
cylinders and damage the engine. If the
engine does not start after cranking for 10
seconds, close the thru-hull water intake
valve to avoid filling the muffler with water.
Crank for 10 seconds or until the engine
starts. When the engines does start, stop the
engine immediately and press the switch to
the OFF position.
1. Open the seacock (if equipped).
2. Open the fuel cock.
3. Put remote control handle in
NEUTRAL.
Note: Safety equipment should make it
impossible to start the engine in any other
position than NEUTRAL.
0003622
(1)
(2)
(3)
(4)
Figure 1
4. Turn the battery master switch (if
equipped) to ON.
5. Turn key switch to ON (Figure 1, (3)).
Ensure that the instrument panel
indicators light and the alarm sounds.
This indicates that indicators and alarm
are working correctly.
Note: The coolant high temperature alarm
indicator does not come on during start-up.
ENGINE OPERATION
44 JH4 Series Operation Manual