Yanmar 3YM20, Operation Manual

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3. OPERATION
21
EN
3. OPERATION
3.1 Fuel Oil, Lubricating Oil, and
Cooling Water
3.1.1 Fuel Oil
Only use the recommended fuel to ob-
tain the best engine performance and
to keep the durability of the engine,
also to comply with the emission regu-
lations.
(1) Selection of Fuel Oil
Diesel fuel oil should comply with the
following specifications.
• The fuel specifications need to comply
with each national standard or interna-
tional standards.
• ASTM D975 No.1-DNo.2-D ... for USA
• EN590:96 ................................ for EU
• ISO 8217 DMX .............. International
• BS 2869-A1 or A2 ................... for UK
• JIS K2204 ......................... for JAPAN
The following requirements also need
to be fulfilled.
• Cetane number should be equal to 45
or higher.
• Sulphur content of the fuel. It should
not exceed 0.5%by volume. (Prefera-
bly it should be below 0.05 %)
• Water and sediment in the fuel oil
should not exceed 0.05% by volume.
• Ash should not exceed 0.01%by
mass.
• 10% Carbon residue content of the fu-
el. It should not exceed 0.35%by vol-
ume. (Preferably it should be below
0.1 %)
• Aromatics (total) content of the fuel. It
should not exceed 35% by volume.
(Preferably it should be below 30%
and aromatics (PAH*) content of the
fuel preferably it should be below
10%)
PAH*: polycyclic aromatic hydrocar-
bons
• DO NOT use Biocide.
• DO NOT use Kerosene, residual fuels.
• DO NOT mix winter fuel and summer
fuel.
Note: Engine breakdown can be attributed
to insufficient quality of fuel oil.
(2) Handling of Fuel Oil
1. Water and dust in the fuel oil cause
engine failure. When fuel is stored, be
sure that the inside of the storage con-
tainer is clean, and that the fuel is
stored away from dirt or rain water.
2. Keep the fuel container stationery for
several hours to allow any dirt or water
to settle to the bottom. Use a pump to
extract the clear, filtered fuel from the
top of the container for use.
Use the clear filtered fuel from the up-
per middle section of the container
only, leaving any contaminated fuel at
the bottom.
NOTICE