OM773LW2 10/09
16
Servicing
FUELS - GENERAL
1. Use only clean, high quality fuels of the following
specifi cations, as defi ned by ASTM designation
D975 for diesel fuels:
a. Use grade no. 2 diesel at ambient temperatures
above freezing 32°F (0°C).
b. Use grade no. 1 at ambient temperatures below
freezing and for all temperatures at an altitude of
above 5,500 ft. (1500 meters).
2. Use fuel having less that 1% sulphur (preferably less
that 0.5%).
3. The cetane number should be a minimum of 45.
4. DO NOT use these unsuitable grades of fuel:
a. Domestic heating oils, all types.
b. Class B engine.
c. Class D domestic fuels.
d. Class E, F, G or H industrial or marine fuels.
e. ASTM-D975-60T No. 4-D and higher number
fuels.
5. Storing
fuel:
a. Keep dirt, scale, water, and other foreign matter
out of fuel.
b. Avoid storing fuel for long periods of time.
c. Fill the fuel tank at the end of each day’s
operation. This will reduce condensation.
SP7-9. FUEL FILTERS
1. Your generator set should have a primary fuel fi lter
installed. We recommend the Racor brand of fuel
fi lter-water separators.
a. Check the primary fuel fi lter daily as
recommended by the fi lter manufacturer.
Empty the collection bowl as necessary.
b. Change the element as often as necessary or
every 500 hours.
c. If the bowl fi lls with water, change the primary
and secondary element immediately.
2. Change secondary fuel fi lter every 500 hours or as
necessary.
a. Remove the spin-on fi lter by turning it
counterclockwise with a fi lter wrench. Fill the
new cartridge with fuel and install it after
applying engine oil to gasket surface. Screw on
until the gasket surface comes into contact with
sealing surface of fi lter base. Then, tighten it
two-thirds of a turn by hand. Do not overtighten.
b.
Fuel
fi lter part numbers are:
773LW
AND
773LW2: #24-52020
