S&S Cycle provides comprehensive manuals detailing the Super E and G Series carburetors, covering installation, jetting, and detailed maintenance procedures for Harley-Davidson motorcycles.
What is the S&S Super E Carburetor?
The S&S Super E carburetor is a high-performance replacement designed primarily for Harley-Davidson motorcycles manufactured between 1955 and 1993. Detailed instruction sheets and user manuals, often available through sources like eBay, provide extensive information on its operation.
These carburetors, alongside the G Series Shorty, are known for improved fuel delivery and increased engine performance. S&S Cycle offers a 36-page manual covering all aspects of these carburetors, ensuring users have access to crucial details for optimal tuning and maintenance. Understanding its components is key, as explained in various online resources and walk-through guides.
Historical Context and Popularity
S&S Cycle’s Super E carburetor gained prominence as a performance upgrade for classic Harley-Davidson motorcycles. Introduced to address limitations in stock carburetors, it quickly became popular among enthusiasts seeking improved power and reliability. The availability of detailed manuals, including those found on eBay, contributed to its widespread adoption.
These manuals, often covering both the Super E and G Series, provided riders with the knowledge to properly install, tune, and maintain their carburetors. Resources like Lowbrow Customs offer disassembly and tuning guides, further cementing the Super E’s legacy within the motorcycle community.
Understanding the Carburetor Components
S&S manuals thoroughly explain each part, detailing function and adjustment of components like the float bowl, main jet, and idle mixture screw for optimal performance.
Float Bowl and Float
The float bowl, as detailed in S&S Cycle manuals, maintains a consistent fuel level crucial for proper carburetor operation. The float itself regulates this level, rising and falling with fuel consumption.
Proper float adjustment, covered extensively in the documentation, ensures optimal fuel delivery across all throttle positions. Incorrect float height can lead to either a rich or lean fuel mixture, impacting performance and potentially damaging the engine.
S&S emphasizes the importance of inspecting the float for leaks or damage during maintenance, as a compromised float will disrupt the fuel supply and affect tuning efforts. Detailed diagrams within the manuals illustrate the correct float height settings.
Main Jet and Needle
S&S Cycle manuals highlight the main jet and needle as critical components governing fuel delivery at higher throttle openings. The main jet controls fuel flow for wide-open throttle, while the needle regulates mixture strength during mid-range operation.
Selecting the correct main jet size, as outlined in the installation instructions, is vital for maximizing performance and preventing engine damage. The needle’s position influences the mid-range mixture; adjustments are detailed in tuning guides.
S&S documentation stresses the importance of understanding how these components interact and provides guidance on jetting based on engine modifications and riding conditions. Proper jetting ensures optimal power and fuel efficiency.
Idle Mixture Screw
S&S Cycle manuals emphasize the idle mixture screw’s role in fine-tuning the air/fuel ratio at idle speed. This screw adjusts the mixture for smooth idling and quick throttle response. Proper adjustment, detailed in tuning guides, is crucial for optimal performance.
The manuals explain how to carefully turn the screw to achieve the highest idle speed and then slightly lean the mixture for stability. Installation instructions also mention its importance during initial setup.
S&S documentation stresses avoiding excessive leaning or enriching, as this can lead to poor running or engine damage. Precise adjustment, guided by the manual, ensures a reliable idle.
Disassembly of the S&S Super E Carburetor
Lowbrow Customs offers a video walkthrough detailing step-by-step disassembly, explaining each part’s function, and preparing for reassembly, as outlined in S&S guides.
Step-by-Step Disassembly Guide
Disassembly begins with carefully removing the fuel line and choke linkage, then the float bowl for access. Lowbrow Customs’ video demonstrates removing the main jet and needle assembly, followed by the idle mixture screw – noting its original turns for reassembly.
Next, detach the throttle linkage and carefully separate the carburetor top from the main body. Pay close attention to gasket placement and condition. S&S manuals emphasize organizing parts as you remove them, preventing loss and aiding reassembly. Documenting each step with photos is highly recommended for beginners, ensuring a smooth and accurate rebuild process. Proper organization is key to a successful carburetor overhaul.
Tools Required for Disassembly
Disassembling an S&S Super E carburetor requires a basic toolkit. Essential items include a set of screwdrivers (flathead and Phillips), wrenches of various sizes to fit carburetor fittings, and needle-nose pliers for delicate parts. A socket set is also beneficial for removing mounting hardware.
Lowbrow Customs suggests having a magnetic parts tray to prevent losing small components like jets and screws. Additionally, a carburetor cleaning brush and solvent tank are helpful for initial cleaning during disassembly. S&S manuals don’t explicitly list tools, but imply a standard mechanic’s set is sufficient for a thorough teardown.
Identifying and Organizing Parts
Careful identification and organization are crucial during S&S Super E carburetor disassembly. As you remove each component – jets, needles, floats, screws – meticulously label and store them. A magnetic parts tray is invaluable, preventing loss of tiny pieces.
Lowbrow Customs emphasizes understanding each part’s function before removal. S&S manuals, while detailing adjustment, don’t focus on part identification directly. Creating a diagram or taking photos during disassembly aids reassembly. Proper organization minimizes frustration and ensures a smooth rebuild process, preventing incorrect installation.
Reassembly of the S&S Super E Carburetor
S&S manuals stress proper gasket and seal replacement during reassembly, ensuring optimal performance and preventing fuel leaks after a thorough cleaning;
Proper Reassembly Procedure
S&S Cycle’s detailed manuals emphasize a meticulous reassembly process for the Super E carburetor. Begin by carefully installing all jets, needles, and the float, ensuring they are clean and undamaged. Next, reattach the float bowl, tightening screws to the manufacturer’s specified torque.
Pay close attention to the throttle and choke linkages, verifying smooth operation without binding. The manuals highlight the importance of correctly seating all gaskets and O-rings to prevent air leaks. Finally, double-check all connections and adjustments before reinstalling the carburetor, referencing the diagrams within the manual for accurate placement of each component.
Gasket and Seal Replacement
S&S Cycle manuals strongly recommend replacing all gaskets and seals during a carburetor rebuild. Old gaskets can degrade, causing air leaks and impacting performance. The manuals detail specific gasket locations – float bowl, intake manifold, and throttle body – and provide part numbers for accurate replacements.
Proper installation is crucial; ensure surfaces are clean and free of debris before applying new gaskets. A light coating of grease can aid in sealing. The manuals caution against reusing old gaskets, even if they appear undamaged, as they may compromise the carburetor’s efficiency and reliability.
Checking for Proper Movement
S&S Cycle manuals emphasize verifying smooth operation of all moving parts post-reassembly. Specifically, the throttle shaft, choke plunger, and float needle should move freely without binding. Any resistance indicates a potential issue – perhaps a misaligned component or a trapped gasket.
The manuals instruct to gently operate the throttle and choke, observing their full range of motion. The float should rise and fall smoothly with fuel level changes. Addressing any binding before installation prevents performance problems and potential damage during operation, ensuring optimal carburetor function.
Tuning the S&S Super E Carburetor
S&S manuals detail adjustments for idle speed, air/fuel mixture, and main jet selection, optimizing performance based on motorcycle and riding conditions.
Idle Speed Adjustment
S&S carburetor manuals emphasize precise idle speed adjustment for optimal engine operation. Begin by ensuring the engine is fully warmed up before making any changes. Locate the idle speed screw, typically positioned on the carburetor body, and slowly adjust it while monitoring engine RPM.
The goal is to achieve a stable idle without stalling or excessively high RPMs. Refer to your motorcycle’s service manual for the recommended idle speed range. Fine-tune the screw in small increments, allowing the engine to stabilize after each adjustment. Proper idle speed ensures smooth operation and prevents issues like rough running or difficulty starting.
Air/Fuel Mixture Tuning
S&S manuals detail air/fuel mixture tuning using the idle mixture screw, crucial for smooth operation. Start with the screw gently seated, then turn it in (clockwise) until the engine begins to stumble, noting the position. Next, slowly turn it out (counter-clockwise) until the engine reaches its highest RPM and smoothest idle.
Fine-tune for the richest mixture just before the RPMs begin to drop. This ensures sufficient fuel at idle. Proper tuning minimizes exhaust smoke, improves throttle response, and prevents plug fouling. Always consult the manual for specific recommendations related to your carburetor model.
Main Jet Selection for Performance
S&S manuals emphasize that main jet selection directly impacts performance, especially at higher throttle openings. Jetting depends on engine modifications, altitude, and ambient temperature. Larger jets deliver more fuel for increased power, while smaller jets lean out the mixture.
Start with the manufacturer’s recommended jet size and adjust based on plug readings – a slightly rich condition (tan/brown color) is preferable to lean (white/grey). Installation instructions and booklets provide guidance on jetting for various setups. Careful jetting optimizes power and prevents engine damage;
Installation Instructions (1955-1993 Harley Davidson)
S&S booklets offer detailed installation and jetting instructions specifically for Harley-Davidson motorcycles manufactured between 1955 and 1993, ensuring proper fitment.
Mounting the Carburetor
Proper mounting of the S&S Super E carburetor is crucial for optimal performance and avoiding air leaks. The S&S installation booklets detail the correct manifold flange compatibility for Harley-Davidson models from 1955-1993.
Ensure a clean and undamaged mounting surface. Use new gaskets as recommended by S&S Cycle to create a tight seal.
Torque the mounting bolts to the manufacturer’s specifications, avoiding over-tightening which can warp the flange. Carefully align the carburetor to prevent strain on the throttle and choke linkages during installation.
Throttle Cable and Choke Linkage
S&S Super E carburetor manuals emphasize the importance of correctly adjusting the throttle cable and choke linkage for smooth operation. The installation instructions detail how to connect the throttle cable to the carburetor’s throttle lever, ensuring free movement without binding;
Proper choke linkage adjustment is also vital for easy starting, especially in cold weather.
S&S Cycle recommends verifying full throttle opening and complete choke closure after installation. Lubricate all linkage points to maintain responsive control and prevent sticking.
Fuel Line Connection
S&S Super E carburetor manuals stress the necessity of a secure and leak-proof fuel line connection. Installation instructions specify using appropriate fuel line compatible with gasoline and resistant to deterioration. Connect the fuel line to the carburetor’s fuel inlet, ensuring a tight fit with a fuel line clamp.
S&S Cycle recommends checking for fuel leaks after connection and before starting the engine.
Proper fuel delivery is crucial for optimal carburetor performance. Always use a quality fuel filter to prevent debris from entering the carburetor.
Maintenance and Troubleshooting
S&S manuals detail regular cleaning, common issues like jetting problems, and solutions for optimal performance, ensuring your Super E carburetor runs reliably.
Regular Cleaning Procedures
S&S Cycle manuals emphasize the importance of consistent carburetor maintenance for peak performance. Periodic disassembly, as outlined in their guides, allows for thorough cleaning of all components. Specifically, the float bowl should be inspected and cleared of debris regularly to ensure proper fuel delivery. Jets and passages require careful cleaning with specialized carburetor cleaner and fine wire to remove varnish and obstructions.
The manuals also recommend inspecting gaskets and seals during cleaning, replacing them if any signs of wear or damage are present. Following these procedures, detailed in the S&S documentation, will help prevent common issues and maintain optimal fuel-air mixture control, extending the life of your Super E carburetor.
Common Issues and Solutions
S&S Cycle manuals address frequent problems encountered with the Super E carburetor. A common issue is a clogged main jet, leading to lean running and poor performance; cleaning or replacing the jet resolves this. Float bowl issues, like debris accumulation, cause inconsistent fuel delivery, requiring bowl inspection and cleaning.
The manuals also detail troubleshooting for idle mixture screw adjustments and potential vacuum leaks. Incorrect jetting, covered extensively in the guides, can cause various running problems. Referencing the S&S documentation provides specific solutions and jetting recommendations based on engine modifications and riding conditions, ensuring optimal carburetor function.
Jetting Considerations
S&S manuals emphasize that proper jetting is crucial for Super E carburetor performance. Jet selection depends heavily on engine modifications – camshafts, compression, and exhaust systems all influence fuel requirements. The guides detail how to read spark plugs to diagnose rich or lean conditions, informing jetting adjustments.
They provide baseline jetting recommendations, but stress the need for customization. Altitude and temperature also impact jetting; the manuals offer guidance for these variables. Understanding the relationship between main jet size, needle position, and idle mixture screw settings is key, as detailed within the S&S documentation, for optimal tuning.