Fuel Filter; Biocides - Isuzu AU-4LE1T Maintenance Manual

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WARNING:
The water/diesel fuel mixture is flammable, and could be hot.
To help avoid personal injury and/or property damage, do not
touch the fuel coming from the drain valve, and do not expose
the fuel to open flames or sparks. Be sure you do not overfill
the container. Heat (such as from the engine) can cause the
fuel to expand. If the container is too full, fuel could be forced
out of the container. This could lead to a fire and the risk of
personal injury and/or machine or equipment damage.
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Fuel Filter

1) Be sure to use the genuine fuel filter. The fuel injection system is
precision structure so that its filter has a finer mesh than conventional
one to extend life of the system. Be sure to use "Genuine fuel filter".
2) Replacement interval may
characteristic of fuel. Clogged fuel filter may cause to result in stopping
the engine. In a place where fuel gets mixed with foreign matter,
perform early inspection and periodic replacement.
Depending on the machine, the electromagnetic type fuel pump is
equipped in this engine. Periodical replacement or cleaning is required
for this pump filter. (Refer to Filter Replacement or Cleaning)
When the filter exchange of this pump is necessary, please inquire at
your machine supply source or contact ISUZU dealer.
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Biocides

In warm or humid weather, fungus and/or bacteria may form in diesel
fuel if there is water in the fuel.
be shortened depending on the