3.7.1. Fuel filter
This fuel filter has two functions not only oil
filtering but also water separating.
Before entering the suction chamber of the
injection pump, the fuel is cleaned in a
strainer of fuel feed pump and a fuel filter.
Drain water in cartridge with loosening the
cock under filter manually (6) from time to
time.
The fuel filter should be replaced at every
400 hours.
3.7.2. Fuel requirements
DAEWOO marine diesel engines was designed to use Number 2-D diesel fuel or equivalent
that meets specification DIN 51601-DK. For maximum fuel economy, Number 2-D fuel when-
ever possible. When temperatures are below -7
û
C(20
ûF
), use Number 1-D fuel. If Number 1-D
fuel is not available, the mixture of one kerosene to two gallons of Number 2-D fuel can be
used. Once kerosene has been added, the engine should be run for several minutes to mix the
fuel.
3.7.3. How to select fuel oil
Fuel quality is an important factor in obtaining satisfactory engine performance, long engine
life, and acceptable exhaust emission levels. DAEWOO engines are designed to operate on
most diesel fuels marketed today. In general, fuels meeting the properties of ASTM
Designation D975 (grades 1-D and 2-D) have provided satisfactory performance.
The ASTM 975 specification, however, does not in itself adequately define the fuel character-
istics needed for assurance of fuel quality.
The properties listed in the fuel oil selection chart below have provided optimum engine per-
formance. Grade 2-D fuel is normally available for generator service. Grade 1-D fuel should
not be used in pleasure craft engines, except in an emergency.
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