Fuel System; Fuel Specifications; Fuel Filter - Kohler 6EKOD Operation Manual

3.4 Fuel System

3.4.1

Fuel Specifications

Use a clean, good quality diesel fuel oil with a cetane
number of 51 or greater. Clean fuel prevents the diesel
fuel injectors and pumps from clogging.
Diesel Fuel Specifications
Cetane number minimum 51
Viscosity 2.0/4.5 centistokes at 40_C
Density 0.835/0.855 kg/litre
Distillation 85% at 350_
Sulphur maximum 0.05% of the weight
Diesel Fuel Recommendations
Fuel with low sulphur content *
Fuel with high sulphur content
* The countries in which diesel normally has a low sulphur content are
Europe, North America, and Australia.
Note: Never store diesel fuel in galvanized containers;
diesel fuel and the galvanized coating react
chemically to produce flaking that quickly clogs
filters or causes fuel pump or injector failure.
Note: Avoid storing fuel for more than one month. Take
special precautions to keep all dirt, water, and
other contaminants out of fuel to prevent the
growth of microbes. Microbes form slime that
clogs the fuel filter and lines.
48 Section 3 Scheduled Maintenance
API CF4, CG4
API CF, CD, CE
Note: Do not run the generator set out of fuel because
the fuel lines will draw in air and necessitate
bleeding the fuel system before restarting the
unit.
3.4.2

Fuel Filter

The quality and condition of the fuel largely determine
the filter's useful life. Replace the fuel filter element as
listed in the service schedule. Section 1 shows the
typical location of a fuel filter.
procedure below to replace the fuel filter.
Fuel Filter Cleaning/Replacement Procedure
1. Close the fuel supply valve.
2. Loosen the fuel filter by turning it counterclockwise.
Remove the fuel filter and use rags to clean up
spilled fuel oil. Dispose of the fuel filter in an
approved manner.
3. Clean the contact surface of the fuel oil filter
adapter.
4. Lightly lubricate the gasket surface of the new fuel
filter with fresh fuel oil. Thread the filter on the
adapter until the
hand-tighten the filter an additional one-half turn.
Wash hands after any contact with fuel oil.
5. Open the fuel supply valve.
6. Bleed the system. See Section 3.4.3, Fuel System
Bleed.
Use the applicable
gasket makes contact;
TP-6772 2/14b