©2010 Edelbrock LLC
Brochure #63-0170
Part #1801-1806,1812, 1813, 1825, 1826
Rev. 6/10 - AJ/mc
Page 6 of 6
Edelbrock LLC • 2700 California St. • Torrance, CA 90503
Tech-Line: 800-416-8628 • Office Line: 310-781-2222
10. Mark air cleaner stud for proper length, remove from carburetor and
cut with hack saw. Deburr stud and re-install in carburetor
(See
Fig. 11)
.
11. Re-check all linkage for smooth operation.
12. Re-connect the negative battery cable to the battery.
13. Start the engine and check for fuel or vacuum leaks. With engine at
normal operating temperature and choke fully open, set idle speed
and mixture screws (see carburetor Owner’s Manual).
CAUTION:
Be alert to carburetor flooding. Flooding can be
caused by dirt, small particles of hose cuttings, floats and
inlet needles which have settled during shipping. When the
fuel pump is turned on or when the engine is first started,
watch closely for signs of flooding. If flooding occurs, turn
engine off immediately and lightly tap on the side of the
carburetor that is flooding, in the rear needle and seat area
with a rawhide mallet or wooden handle of a hammer. Start
engine and see if flooding continues, if so refer to owner’s
manual.
WARNING:
NEVER POUR FUEL DIRECTLY DOWN THE
CARBURETOR WHEN ATTEMPTING TO START THE
ENGINE! THIS MAY CAUSE A BACKFIRE AND POSSIBLE
ENGINE COMPARTMENT FIRE, RESULTING IN ENGINE OR
VEHICLE DAMAGE, PERSONAL INJURY AND/OR DEATH.
ADJUSTING THE AIR VALVE SECONDARY
1.
With Torx drive (T15) and flat blade screw driver in place, loosen
Torx screw, make sure flat blade is secure to prevent loss of spring
pressure
(See Fig 12)
.
2.
If you lose spring pressure, turn flat blade screw counter-clockwise
until the air valve reaches closed position plus 1-1/2 turns to
achieve the factory setting.
NOTE:
Turn only 1 full turn beyond closed position for
1803/1804 factory setting. For single carb applications, set
1803/1804 carburetors to 1-1/2 turns past closed position.
3.
The factory setting is the most common setting. If additional tuning
is required, turn the air valve screw counter-clockwise to make the
air valve open later, it is not recommend to go beyond one turn more
than the factory setting, or more than 2-1/2 turns past the closed
position.
Fig. 11
Fig. 12
Torx
Flat Blade
