S&S Cycle Super B Series Carburetor - Manual (Page 5)

6. Install Air Cleaner Backplate
A. Mount air cleaner backplate on carb using three 1⁄4 -20
x 3⁄4” screw/washer assemblies through holes “C”. See
Figure A.
B. 1966 to 1982 shovelhead and ironhead Sportster ®
models - Bolt bracket to air cleaner backplate through
hole “B”. See Figure A. Use 1⁄4” bolt, flatwasher and
locknut provided and snug all mounting bracket bolts.
Final tighten all mounting bracket bolts.
C. Harley-Davidson ® 1984 to 1992 Evolution ® and
Sportster ® models to 1990 - Bolt air cleaner backplate
bracket to cylinder heads with 5⁄16 -18” bolts,
flatwashers and lock washers. Fill gap between cylinder
heads and mounting bracket with shims as previously
determined in manifold installation step.
D. Shovelhead and Sportster ® models 1980 to 1985 and all
Evolution ® - Connect crankcase breather hose to air
cleaner backplate hose fitting.
7. Reassemble Anything That Was Disassembled for
Installation and Final Check Installation
A. Check carb to manifold mounting bolts.
B. Check carb to air cleaner backplate mounting screws.
C. Check carb mounting bracket to head or to tappet block
mounting bolts and air cleaner backplate to heads
mounting bolts.
D. Check fuel line connections and routing.
E. Check vacuum operated advance ignition connections
if applicable.
F. Check crankcase to air cleaner backplate vent hose
connections if applicable.
G. Test throttle to be sure it opens and closes freely. Turn
handlebars to extreme left and open and close throttle,
then turn bars to extreme right and check throttle.
NOTE - Throttle must not bind and must snap shut to fully closed
position when released.
If throttle does not return to fully closed position when
released, it may inadvertently stick open possibly causing loss
of control of motorcycle and personal injury to you or others.
H. Reassemble anything that was disassembled for
installation. Consult your Harley-Davidson
® service
manual for installation of parts not covered in
these instructions.
8. Bolt on Air Cleaner Cover
A. Check fuel needle and seat assembly to be sure it
works properly. Fill gas tank with just enough fuel to
test system. Lean motorcycle over towards carburetor
side, turn on fuel petcock and wait 20 seconds. If gas
runs out end of carb, turn off petcock and check
needle and seat.
NOTE - Fuel needle and seat assembly must completely shut off
fuel supply entering bowl. Fuel inlet fitting to bowl sealing area
and/or fuel line connections must not leak.
Unwarranted gasoline leaking by inlet needle may flood
engine causing damage to components.
Unwarranted gasoline leaks , at fuel line connections and/or
past inlet needle may flood engine and overflow on
surrounding area creating fire hazard.
B. If needle and seat assembly works properly, install
element and air cleaner cover using three 1⁄4 -20 x 1”
mounting screws.
C. Fill gas tank.
Carb Operation
This carburetor does not have conventional choke. Instead, a
mixture enrichment device, part #11-2084, is used for starting.
This device utilizes separate air and fuel pickup passageways.
This device is engaged by raising the lever on top left side of
carburetor and turning it slightly (See Picture 1).
Enrichment Device NOTES:
●
Enrichment pickup tube located directly below fast idle
plunger is pressed into carburetor body and must not
be removed.
Removal of enrichment/fast idle pickup tube from carburetor
body may alter hole size in carb body and cause irreversible
damage to carburetor.
● Enrichment device may be removed for cleaning purposes,
but must not be disassembled any further.
Cold Starts
1. Open fuel petcock.
NOTE - When motorcycle is not running, fuel shutoff valve should
always be turned off to prevent possible leakage should needle
and seat not work properly.
Unwarranted gasoline leaking by inlet needle may flood
engine causing damage to components.
Unwarranted gasoline leaking past inlet needle may flood
engine and overflow on surrounding area creating fire hazard.
5
WARNING
CAUTION
WARNING
CAUTION
CAUTION
WARNING