Demon Fuel Systems 1902 - Manual (Page 4)

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F. Unbolt and remove the carburetor from the manifold.
3. If the intake manifold is being changed at this time, install the new manifold according to the manifold manufacturer ’s
directions.
Installation of Street Demo
n™ Carburetor
1. Install the carburetor-mounting studs (provided) in the proper location on the intake manifold carburetor flange.
2. Place a new carburetor flange gasket, sealing plate and
second flange gasket provided with the carburetor, in the
proper position on the intake manifold (Fig. 1).
NOTE: The sealing plate is required for the proper function
of the idle circuit which aids in idle fuel atomization
along with a reduction in heat transfer from the
intake manifold.
NOTE:
If installing the Street Demon™ on a factory cast iron
spread bore style manifold, a spacer may be
required for proper throttle opening.
3. Place the carburetor on top of the flange gasket on the
manifold. Install the hold down nuts and snug down
progressively in a “crisscross” pattern (60-80 in./lbs.).
4. Open and close the throttle a few times to ensure the throttle
operates smoothly with no binding or sticking.
WARNING:
Over tightening may result in a warped or
cracked carburetor throttle body.
WARNING:
Any sticking, binding, or other interference in
the throttle linkage could result in
uncontrolled engine speed. This could result
in engine damage or personal injury.
5. In some cases, the existing fuel line will have to be cut and
connected with a length of rubber fuel hose and a clamp. The
Street Demon
™ carburetor comes with three fuel fittings.
5/16” hose barb, 3/8” hose barb (installed) and a 3/8” inverted
flare fuel fitting for a hard line. Select the appropriate fuel fitting
and install into the carburetor making sure to use the new fuel
inlet fitting gasket also supplied in the kit. Figure 1
Optional Fuel Inlet Fittings
Street Demon™ 9/16"- 24 threaded fuel inlet boss accepts the following optional fittings:
FITTING TYPE MANUFACTURER PART NUMBER
# 6 MALE INLET SNIPER PERFORMANCE
60406421 (BLUE)
60406423 (BLACK)
#6 STANDARD EARL’S 991942ERL
If installation requires cutting the metal fuel line, cut the fuel line with a good tube cutter. This will minimize the chance of
producing metal chip particles. If a hacksaw must be used, then metal chips must be removed.
WARNING:
During the fuel line installation, DO NOT allow any foreign particles to enter the fuel lines, which
could then cause flooding and may result in a fire.
WARNING:
Keep the fuel line away from the EGR valve (if equipped) on the intake manifold.