Demon Fuel Systems 5563020GC - Manual (Page 5)

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The carburetor should not be able to be rocked diagonally. A carburetor that rocks is an indication
that the manifold or carburetor spacer could be warped. This must be corrected before the carburetor
is bolted down. When the carburetor sits squarely, it is safe to install nuts and washers. Be sure all
nuts are installed on the studs and hand tight before beginning the final torque sequence. Use an
alternating pattern, to tighten each nut a little at a time (Fig. 7). Do not over tighten the nuts. Only 5-7
foot pounds of torque are required to secure and seal the carburetor base to the manifold. Once the
nuts are evenly torqued, check the carburetor linkage for smooth operation to wide open throttle, and
then closed again.
WARNING: Baseplates that are cracked during installation are not covered under warranty.
A socket or standard open-end wrench must be used to tighten the carburetor to the manifold.
Figure 7
Connecting the Throttle Linkage
Get a helper for this part of the installation. Have someone sit in the car and hold the pedal firmly
against the floor. While holding the pedal firmly against the floor, pull the carburetor to its wide open
position (Fig. 8). Adjust the linkage rod or cable to the proper length, and then attach it to the
baseplate linkage. Remember, the pedal should come against a positive stop (the floor or an
aftermarket stop), just as the carburetor gets to wide open throttle. With the linkage rod attached to
the baseplate, make sure the carburetor can return to its closed position. Install your return spring(s),
and check again for smooth operation to wide open throttle, and then closed again. If you rely on the
baseplate linkage as a stop, it is possible to damage the linkage causing the throttle to stick in the
wide open position.
Figure 8