S&S Cycle 49-State EPA Certified Engines User Manual
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WARNING
Installation Notes
S&S® Engines may include instruction sheets for individual components. Most instructions apply to all S&S Engines. In the following instances,
however, components or procedures supplied with and described for S&S 49-State EPA Certified Engines are different from those for other S&S
Engines.
A- Some S&S Engines may be configured to allow crankcase pressure to exit via the crankcase and/or cylinder head vents. S&S 49-State EPA-
Certified Engines must only utilize cylinder head venting.
B- The camshaft supplied in S&S 49-State EPA Certified Engines is of proprietary S&S design. This camshaft has been designed to allow the engine
to meet exhaust emission standards. Substitution of a camshaft with different specifications is not permitted and would be in violation of the
Clean Air Act.
C- S&S 35/8” bore engines come equipped with an S&S Super Stock® ignition system that is preset at the factory. Breaking the tamper proof seal will
void the warranty on the engine.
D- The Super Stock and IST ignition system requires the use of a 3 OHM single-fire coil like the S&S coil PN 55-1571.
E- The carburetor supplied with S&S 49-State EPA Certified Engines is not to be adjusted. For service requirements, contact S&S Cycle Technical
Services, 608-627-1497. The tuning instructions described in S&S Carburetor Instruction Sheet No. 400 do not apply to carburetors supplied
with S&S 49-State EPA Certified Engines. More specific information can be found in your S&S 49-State EPA Certified Engine Owners manual.
F- The carburetors included with 49-State Engines are butterfly type carburetors with a preset idle mixture screw and preset midrange and high
speed jets. The carburetors also feature an accelerator pump and variable fast idle device for improved throttle response, engine starting, and
warm ups. The Super E carburetor has a 17/8" (47.6mm) bore at the butterfly and a 1 9/16" (39.6mm) venturi. The Super G carburetor has a 2 1/16"
(52.3mm) bore at the butterfly and a 13⁄4" (44.5mm) venturi.
Installation Instructions
This S&S 49-State EPA Certified Engine has been manufactured, assembled, and calibrated by S&S Cycle, Inc. Before proceeding, verify that this
engine fulfills the requirements for your motorcycle. Installing an S&S engine into a motorcycle requires specialized knowledge, skills, and tools. For
this reason installation should be performed by a professional mechanic.
Improper installation of engine or related components could result in injury or death to the operator and/or passenger and damage to
the motorcycle.
Installation
1- Install the S&S engine into the motorcycle chassis according to the chassis service manual.
2- Install the ignition module.
A- For engines equipped with Super Stock ignition-
I- Mount VOES switch with the included bracket as close to the carburetor as possible.
II- Connect the VOES hose from the switch to the nipple in the manifold. Trim the hose to be as short as possible without stretching or
kinking it.