Yanmar 4JH3-TE Operation Manual page 44

40 5. MAINTENANCE & INSPECTION
(3) Inspection of Battery
Fire due to Electric Short-Circuits
Always turn off the battery switch or detach the earth cable (-) before inspect-
ing the electrical system. Failure to do so could cause short-circuiting and
fires.
Proper Ventilation of the Battery Area
Be sure the area around the battery is well-ventilated and there is nothing
which could start a fire. During operation and charging, hydrogen gas is
emitted from the battery and can be easily ignited.
Battery Fluid
Battery fluid is diluted sulfuric acid. It can blind you if it gets in your eyes, or
burn your skin. Keep the fluid away from your body. Wash it off immediately
with a large quantity of fresh water if you get any on you.
• Check the level of fluid in the battery.
When the amount of fluid nears the lower limit, fill with
battery fluid (available in the market) to the upper limit.
If operation continues with insufficient battery fluid, the
battery life is shortened, and the battery may overheat
and explode.
• Battery fluid tends to evaporate more quickly in the
summer, and the fluid level should be checked earlier
than the specified times.
• If the engine cranking speed is slower than usual rate
and the engine difficults to start, recharge the battery.
• If the engine still will not start after charging, replace
the battery.
NOTICE:
The capacity of the specified alternator and battery is sufficient for regular operation, how-
ever, the capacity may be insufficient if they are used for other purposes such as lights
inside the boat, etc. Consult your Yanmar dealer or distributor.
CUSTOMER
Upper Level
Lower Level
Follow the instructions and precautions in the
manual from the battery maker.
Battery Fluid