Onan DYC Series Operator's Manual And Parts Catalog page 18

F U E L S Y S T E M
Allis-Chalmers engines used pn the DYC sets are
designed for use with ASTM No." 2 Diesel fuel. They
will however, operate on diesel fuels within the
specifications delineated in the Allis-Chalmers
engine manual.
F U E L C O N N E C T I O N S
Check local regulations governing the installation of
a fuel supply tank.-
In any diesel engine installation, fuel system cleanliness If of
utmost importance. Make every effort to prevent entrance of
"moisture o r contaminants Of any kind.' Do not use lines or fittings of
galvanized material.
A 'fuel lift in excess of 8-feet (2.44 m) is not
recommended without a day tank installation,
because of fuel drainage. Horizontal run, if thesupply
tank is level with the fuel pump should not exceed 25-
feet (7.6 m). However, a day tank is again
recommended.
The fuel inlet is to the transfer pump and isthreaded
for 1/8-inch pipe. Injector pump return line is com-
mon with the injectors' return line, and requires a 1/8-
inch low pressure hose connection.
Maximum fuel return line restriction is 6.1-inches
(155 m) Hg.
: F U E L
R E T U R N
L I N E
I N J E C T O R S
F U E L P U M P
H A N D
PRIMER
PUMP
F U E L
I N L E T
3400-4 C O N N E C T I O N
F I L T E R
FIGURE 11. FUEL SYSTEM