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S&S Cycle Super E and G Series Shorty Performance Carburetors for 1936-84 Harley-Davidson Big Twins and 1957-85 Ironhead Sportster Models User Manual

Page 7

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6- Install Air Cleaner Backplate

NOTE: Backplate screws supplied with kit have pre-applied thread
locking compound on threads. If screw without thread locking
compound is used, a thread locking compound such as Loctite® 242
must be applied to threads, and screws properly tightened. If screws
are removed in future, Loctite® 242 or equivalent must be applied
before reinstallation.

Failure to apply thread locking compound or properly tighten
screws may cause screws to loosen and fall into engine,
resulting in engine damage not covered under warranty.

A- Mount air cleaner backplate on carb using three 1⁄4"-20 x

9⁄16" screw/washer assemblies. Confirm that enrichment
device lever, engages enrichment device plunger, and
that enrichment device plunger does not bind at any
point in the travel of the lever. See Picture 12. Tighten
backplate mounting screws to 5-7 ft-lbs (60-84 in-lbs).

Picture  12  


B- 1957-’85 Sportster® models and 1966-’82 shovelhead big

twins - Bolt carb mounting bracket to air cleaner
backplate. Head of 5⁄16"-18 x 1" bolt should rest in hex
recess on inside of backplate with threaded portion
extending through backplate, two 1⁄8" shims and
bracket. Secure with 5⁄16" flatwasher and locknut
provided.

C- All models - Final tighten of all mounting bracket bolts

and manifold clamps.

D- 1980-’84 big twin & Harley-Davidson® Sportster® models

1980 to 1985 - Connect crankcase breather hose to air
cleaner backplate hose fitting. See Pictures 13 and 14.

 

 

Picture  12  

 

Picture  14  


7- Final assembly and checks.

A- Check carb to manifold mounting bolts.
B- Check carb to air cleaner backplate mounting screws.
C- Check each of following that is applicable:

• Air cleaner mounting bracket to rocker box bolts

• Mounting bracket to air cleaner backplate bolts.
• Mounting bracket to center case stud.
• Mounting bracket to tappet guide bolt.

D- Check fuel line connections and routing. Avoid hot

surfaces.

E- Check vacuum operated ignition advance connections if

applicable.

F- Check crankcase to backplate vent hose connections if