Kuryakyn 9400 HYPERCHARGER AIR CLEANER KIT - Manual (Page 4)

PAGE
4
• Generally speaking, popping of backfiring through the carb indicates a lean condition.
Blubbering, smoking or popping out the exhaust indicates a rich condition.
• If you are experiencing backfiring through the exhaust, check the following before you
assume the carburetor is improperly jetted:
A) Leaking exhaust pipe gaskets
B) Leaking fresh air system block off plate gaskets (if applicable)
C) If the fresh air system was not removed, be sure the plug has not come out of
the 3/4” inlet hose.
STEP 12 Reinstall the carburetor according to the section in your factory service manual
that outlines procedures for carburetor removal, disassembly, reassembly and
installation.
STEP 13
Insert the supplied rubber intake duct through the main support bracket making
sure both flanges are through the support bracket as shown in PIC.2.
STEP 14
Install the 90-Degree Elbow into the threaded hole in the Hyper back plate located
at the rear section (pointed end).
STEP 15 Insert the “flanged” end of the rubber carb bumper through the opening in the
center of the chrome carb bumper bracket. You will need a small flat head
screwdriver to push it through. The “knob” should protrude through the bracket in
the opposite direction as the two mounting tabs at each end of the bracket. See
PIC.3.
STEP 16 Mount the bumper bracket to the carb support bracket as shown in PIC.4, using
the 1/4–20 x 5/8” button head cap screws, reducer washers, 1/4” flat washers,
and Nylock nuts. When positioned correctly, the rubber carb bumper will be
positioned directly between the two vertical, parallel flanges on the carb body once
the assembly is mounted to the engine.
STEP 17
Remove the round Trap Door from the front of the Hyper by removing the four
Button Socket Cap Screws using a hex wrench.
STEP 18
The front cover of the Hyper has been removed for clarity in the picture but it is
not necessary for the installation. Insert the rubber intake duct through the Hyper
back plate in the same fashion it was installed in the main support bracket. See
PIC.5. You may need to use a screwdriver to help “poke” the flange of the Rubber
Intake Boot into position inside the back plate.
STEP 19 See PIC.5. Roll back the inner “lip” of the rubber intake duct, align the mounting
holes in the Hyper back plate, rubber intake duct and support bracket and insert a
supplied 1/4”–20 x 5/8” Socket Head Cap Screw through each hole. Secure on the
bracket side of the assembly with the supplied 1/4”–20 Nylock Nuts. Tighten snugly.
STEP 20
Replace the trap door in reverse fashion as removed in STEP 17.
STEP 21
Remove the large hose clamp from the OEM rubber air cleaner boot, (air cleaner to
carburetor connection) and install it on the carb end of the new rubber intake duct.
STEP 22 Locate the vacuum line shown in PIC.6 located at the left, front side of the carb. Cut
the vacuum line about three inches form the carb and insert the supplied “T” fitting
as shown. Connect one end of the supplied 18” hose to the remaining outlet on the
“T” fitting and route the other end downward on the forward side of the carburetor.
This end will be connected in a later step.
HYPERCHARGER
INSTALLATION
-cont.-
PIC 2
PIC 3
PIC 4
PIC 5
MAKE SURE
BOTH
FLANGES ARE
THROUGH
BRACKET
FLANGED END
OF RUBBER
BUMPER ON
THIS SIDE OF
BRACKET