Kuryakyn 9410 HYPERCHARGER AIR CLEANER - Manual (Page 3)

PAGE
3
STEP 11
Pull the carb free of the manifold and remove it from the motorcycle. Install the Jet Kit provided.
NOTE: Now is a good time to proceed with re-jetting of the carburetors. Consult
your factory service manual for this procedure. We have supplied jets to
cover most common applications.
CARBURETOR RE-JETTING PROCEDURE
NOTE:
Different combinations of aftermarket exhaust and air cleaners will have
a significant impact on carburetor jetting. The supplied jetting
components have been tested and found to be a good combination to
produce drivability and performance with stock or free flowing, muffled/
baffled exhaust pipes. We highly recommend NOT using drag pipes (open
style). Using drag pipes in conjunction with our air cleaner may require
additional jetting above and beyond the components included in this kit.
A)
Carefully drain all gas from the carburetor.
B) See FIG.1. Set the carburetor on its top with the float bowl facing upwards. Observe the
cylindrical casting to the rear of the float bowl. Notice the brass plug in the end of that
casting. Use a center punch to make a divot in the end of this plug. Using the supplied
drill bit carefully drill out the center of the plug. IMPORTANT: Located below the plug is
a brass adjustment screw. Be extremely careful not to allow the drill bit to break
through the plug and damage the screw below. Start the supplied slotted pan screw into
the hole you drilled and thread it in just enough for the threads to bite. Grasp the screw
with pliers and gently wiggle the screw back and fourth while pulling outward to remove
the plug. Turn the adjustment screw all the way in until it lightly bottoms out. Back the
adjustment screw out 3-1/2 turns from bottomed.
C) Carefully remove the float bowl. The stock #48 low speed jet is located in the deep
cylindrical recess. Remove and replace the main jet with one of the following:
#160 – Used in high elevations and/or with stock or restrictive exhaust
#165 – Used with baffled drag pipes (like the Vance & Hines Straight Shots)
#170 – Muffled performance pipes (like Cobra or Vance & Hines Duals)
#180 – Open drag pipes
D) Replace the float bowl.
E) Carefully remove the carburetor top, slide spring, and slide. The rubber diaphragm is
very fragile. Use caution not to tear, puncture or stretch it. The needle can be
addressed one of two ways.
1) The stock needle works well when installed with the three supplied needle
shims placed under the head of the needle, raising the installed position of the
needle.
2) The supplied needle may also be installed providing further adjustment if
additional performance modifications will be made.
F) Once your choice of needle has been installed, Replace the nylon needle retainer, slide,
and slide spring.
G)
Carefully place the lip of the diaphragm into the groove in the top of the carburetor
body and install the carburetor top. IMPORTANT: Be sure the diaphragm has not been
pinched or damaged in any way during installation. ANY leak in this seal will cause the
bike to run poorly and will require replacement of the diaphragm.
CARBURETOR TUNING TIPS
Several factors can influence the tuning and drivability of your motorcycle. Altitude,
temperature, and choice of exhaust will all affect performance. Further adjustments may be
required based on these factors. Backfires through the intake generally indicate a lean
condition. Blubbering, shuddering, smoking and plug fowling indicate a rich condition. If jet
changes are required be certain that you change the jet causing the problem. EXAMPLE: If
your bike exhibits a cough or backfire through the intake, changing the main jet would not
change the condition.
HYPERCHARGER
INSTALLATION
-cont.-
PIC 4
PIC 5
FIG 1
PIC 6
PIC 7
REMOVE AND RETAIN
BRACKET AND HARDWARE