Demon Fuel Systems 421440 - Manual (Page 6)

6
Figure 12
12. With the choke installed onto the carburetor, re-install the carburetor to the engine. Now, run a
wire from a switched +12V source to the connection on the pod cover marked with a (+). Run a
second wire from the terminal marked (-) to a good ground. See Fig. 13.
13. Now that the choke has been installed, it is important to make sure that it is adjusted properly.
Figure 13 Figure 14
There are two primary adjustments: the choke idle speed screw and the choke timing. The choke idle
speed screw controls how open the primary butterflies are open when the choke butterfly is closed or
partially closed. It sets your fast idle (Fig. 14).
This idle can be increased by turning the choke idle screw clockwise, or decreased by turning it
counterclockwise. It is important to note that when the choke butterfly is open completely (vertical up
and down), the choke idle speed screw must not be holding the primary butterflies open at all. In
other words, when the choke idle speed screw is in the deepest cut on the fast idle cam, it must not
be hitting the fast idle cam.
Note: If the fast idle cam is not resting on the choke idle speed screw in the deepest slot, a
slight bend to lengthen the choke linkage will correct that problem. It is best to do this with
pod removed. Bend the link on the long leg near the 90
° as to not break the link.