Allis-Chalmers WD Operating Instructions And Repair Parts Illustrations page 16

FUELS FOR ECONOMY AND PERFORMANCE
USE FUELS SPECIFIED FOR
Engines for Model "WD "Tractors may be
secured with either a high or low compres-
sion ratio. Each is designed to efficiently
burn a particular class of fuel. For best
performance use the class of fuel for which
the engine was designed.
Standard compression engines are equipped
to burn distillate, tractor fuel or low octane
gasoline. These fuels should have the fol-
l o w i n g s p e c i f i c a t i o n s : G r a v i t y - - 3 8 o r
higher: End Point - 525O
Rating -- 30 or more; Gasoline --60 octane
or higher. Engines equipped to burn the
above fuels are designated by the letter "K"
following the engine serial number located
on the left rear of engine block (Example
WD-1106 50 KX.)
High compression engines
burn gasoline only. For average loads use
60 octane gasoline or higher. For continued
heavy loads use 70 octane gasoline or higher.
These engines are designated by the letter
"G" following the engine serial number.
(Example: W D - 1 1 0 6 5 0 G A . )
MANIFOLDS - The WD Tractor is supplied with
two types of manifolds.
The two fuel manifold is used with standard
compression engines and can be used for
tractor fuel or gasoline. The gasoline mani-
fold is supplied on high compression engines
and uses gasoline only.
When using the two fuel manifold install the
cover marked "K " when burning tractor fuel
or distillate. Install the cover marked "G"
when using gasoline.
FUEL FILTER - The fuel filter is provided for
the purpose of keeping dirt and water from
entering the carburetor. However the best
results are obtained by using adequate fuel
storage and handling facilties. If the fuel is
kept free of dirt and water by use of clean
containers and proper handling, the filter will
have little work to perform.
To clean the filter, shut off the fuel supply.
Loosen the bowl retaining nut and move bail
to one side.
Remove bowl, gasket and felt element. Note
which side of the element is up and be sure
to re-install with the same side up.
FUEL SYSTEM
.
YOUR ENGINE.
or less; Octane
are equipped to
GASOLINE MANIFOLD
F U E L F I L T E R
The element can be cleaned with ordinary
soap and water and a small stiff brush. The
element must be thoroughly dried before
re-installing.
It is well to carry an extra element on hand.
This will avoid delay in the drying operation.