Vehicle Segment:
        
        
            Cruiser/Performance Cruiser
        
     
    
        
            Target Audience:
        
        
            Enthusiast riders seeking a blend of classic Harley styling with more aggressive performance and handling characteristics.
        
     
    
    
        
            Competitors 2004:
        
        
            Other Harley-Davidson Dyna models, some Indian Chief models, and performance-oriented Japanese cruisers.
        
     
    
    
        
            Performance Focus:
        
        
            The 'Sport' designation highlights its focus on improved handling and performance over more traditional cruisers.
        
     
    
        
            Handling Enhancements:
        
        
            Often features upgraded suspension components, dual front disc brakes, and a more aggressive riding position compared to other Dyna models.
        
     
    
    
        
            Diy Support:
        
        
            Essential for owners who perform their own maintenance and repairs, saving on dealership labor costs.
        
     
    
        
            Diagnostic Tool:
        
        
            Empowers riders to understand and diagnose issues, leading to more informed repair decisions.
        
     
 
    
    
    
        
            Engine Service:
        
        
            Engine assembly, disassembly, inspection, tuning, lubrication, cooling system, fuel system, exhaust system
        
     
    
        
            Transmission Drivetrain:
        
        
            Primary drive, transmission assembly, clutch operation, final drive (belt)
        
     
    
        
            Chassis Suspension:
        
        
            Frame inspection, front fork service (including cartridge type for FXDX), rear shock absorber and swingarm maintenance, wheel bearing service
        
     
    
        
            Electrical System:
        
        
            Battery maintenance, ignition system, lighting, starter system, charging system, instrument cluster, wiring diagrams, troubleshooting electrical faults
        
     
    
        
            Braking System:
        
        
            Front and rear brake caliper service, master cylinder overhaul, brake line replacement, ABS system (if equipped), brake fluid specifications
        
     
    
        
            Fuel System:
        
        
            Carburetor (Keihin CV) disassembly, cleaning, and adjustment, fuel pump, fuel lines, fuel tank service
        
     
    
        
            Bodywork Fittings:
        
        
            Fender removal and installation, fuel tank mounting, seat service, handlebar and control adjustments, fairing and saddlebag (if applicable) service
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacement, spark plug replacement, air filter service, lubrication points, belt tension adjustment
        
     
    
        
            Troubleshooting Diagnostics:
        
        
            Systematic diagnosis of common performance issues, electrical faults, and mechanical problems with step-by-step guides
        
     
    
        
            Rebuild Procedures:
        
        
            Complete engine rebuilds, transmission overhauls, and component-specific repair instructions with torque specifications
        
     
    
        
            Electrical Diagnostics:
        
        
            Use of multimeters, interpretation of wiring diagrams, fault code identification and resolution (where applicable)
        
     
    
    
        
            Diagnostic Level:
        
        
            Advanced diagnostic procedures, including troubleshooting charts and component testing
        
     
    
        
            Repair Scope:
        
        
            Comprehensive repair instructions, from minor adjustments to major component overhauls and replacements
        
     
    
        
            Specification Detail:
        
        
            Detailed torque specifications, clearances, fluid capacities, and component tolerances
        
     
 
    
    
    
        
            Engine Family:
        
        
            Evolution (Big Twin)
        
     
    
        
            Engine Type:
        
        
            Air-cooled V-twin, 45-degree cylinder angle
        
     
    
        
            Displacement:
        
        
            1450cc (88 cubic inches)
        
     
    
        
            Bore X Stroke:
        
        
            3.75 in. x 4.00 in. (95.25 mm x 101.6 mm)
        
     
    
    
    
        
            Horsepower:
        
        
            Approximately 65-70 HP (estimated, actual may vary based on tuning and emissions)
        
     
    
        
            Torque:
        
        
            Approximately 70-75 ft-lbs @ 3200 RPM (estimated)
        
     
    
    
        
            Fuel Delivery:
        
        
            Carbureted (Harley-Davidson Keihin CV 40mm)
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline, 91 octane (R+M)/2 or higher recommended
        
     
    
    
        
            Camshafts:
        
        
            Stock cam specifications will be detailed in the manual for timing and lift
        
     
    
        
            Valve Train:
        
        
            Pushrod-actuated overhead valves
        
     
 
    
    
    
        
            Type:
        
        
            5-speed constant mesh
        
     
    
        
            Clutch:
        
        
            Wet, multi-plate, diaphragm spring
        
     
    
    
        
            Transmission Options:
        
        
            N/A for stock 2004 FXDX
        
     
    
    
        
            Primary Drive:
        
        
            Duplex chain
        
     
    
    
    
        
            Transmission Oil Type:
        
        
            Harley-Davidson Formula+ Transmission & Primary Chaincase Lubricant or equivalent API GL-4 SAE 80W-90 gear oil
        
     
    
    
        
            Transmission Oil Capacity:
        
        
            Approximately 1 quart (0.95 L)
        
     
 
    
    
    
        
            Length:
        
        
            Approximately 90.4 inches (2296 mm)
        
     
    
        
            Width:
        
        
            Approximately 33.9 inches (861 mm)
        
     
    
        
            Height:
        
        
            Approximately 49.0 inches (1245 mm)
        
     
    
        
            Wheelbase:
        
        
            Approximately 63.4 inches (1610 mm)
        
     
    
    
        
            Dry Weight:
        
        
            Approximately 636 lbs (288 kg)
        
     
    
        
            Gross Vehicle Weight Rating:
        
        
            Approximately 1030 lbs (467 kg)
        
     
    
    
        
            Saddlebags:
        
        
            Optional, typically rigid or semi-rigid, capacity varies
        
     
    
    
        
            Front Tire Size:
        
        
            100/90-19 57H
        
     
    
        
            Rear Tire Size:
        
        
            160/70-17 73V
        
     
    
        
            Front Wheel:
        
        
            19-inch cast aluminum
        
     
    
        
            Rear Wheel:
        
        
            17-inch cast aluminum
        
     
    
        
            Bolt Pattern:
        
        
            5x114.3mm (typically for Harley-Davidson)
        
     
 
    
    
    
        
            Crash Test Ratings:
        
        
            N/A (Motorcycles are not subject to the same crash test ratings as automobiles)
        
     
    
    
        
            Braking System:
        
        
            Dual front disc brakes with 4-piston calipers, single rear disc brake with 4-piston caliper
        
     
    
        
            ABS:
        
        
            Anti-lock Braking System (ABS) was an optional feature for some Harley models in this era, check specific VIN.
        
     
    
    
        
            Lighting:
        
        
            Halogen headlight, LED taillight and brake light, amber turn signals
        
     
    
        
            Frame Construction:
        
        
            Steel tube frame for rigidity and handling
        
     
 
    
    
    
        
            First Service:
        
        
            Typically at 1,000 miles (1,600 km) for initial break-in service (oil change, filter, primary check, belt check)
        
     
    
        
            Subsequent Oil Changes:
        
        
            Every 5,000 miles (8,000 km) or annually, whichever comes first
        
     
    
        
            Belt Tension Check:
        
        
            Every 5,000 miles (8,000 km) or as per manual recommendation
        
     
    
        
            Spark Plug Replacement:
        
        
            Refer to manual, often around 10,000 - 15,000 miles (16,000 - 24,000 km)
        
     
    
    
        
            Engine Oil Type:
        
        
            Harley-Davidson SYN3 Synthetic Motorcycle Oil or equivalent SAE 20W-50 motorcycle specific engine oil.
        
     
    
        
            Engine Oil Capacity:
        
        
            Approximately 3 quarts (2.8 L) with filter change
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 recommended for hydraulic brake systems.
        
     
    
        
            Fork Oil Type:
        
        
            Refer to manual for specific weight (e.g., 10W or 15W) and type (e.g., Showa SS-8 or equivalent)
        
     
    
    
        
            Cam Chain Tensioners:
        
        
            Hydraulic cam chain tensioners in earlier Twin Cam models (prior to 2007) could wear prematurely. The manual will detail inspection and replacement procedures.
        
     
    
        
            Carburetor Tuning:
        
        
            CV carburetors may require periodic adjustment for optimal performance due to altitude, fuel variations, or wear.
        
     
    
        
            Charging System Issues:
        
        
            Rotor and stator failures can occur, leading to charging problems. The manual provides diagnostic steps.
        
     
    
    
        
            Oil Filter Part Number:
        
        
            Commonly 63796-77A or equivalent aftermarket (refer to manual for exact fitment)
        
     
    
        
            Air Filter Part Number:
        
        
            Varies by filter type; manual will specify OE numbers or recommend types.
        
     
 
    
    
    
        
            Harley Davidson Legacy:
        
        
            Founded in 1903, Harley-Davidson is an iconic American motorcycle manufacturer known for its V-twin engines and distinctive styling.
        
     
    
    
        
            Dyna Platform Introduction:
        
        
            The Dyna platform was introduced in 1991, evolving from the earlier FXR models, offering a balance of handling and comfort.
        
     
    
        
            Fxdx Positioning:
        
        
            The FXDX Super Glide Sport was positioned as a more performance-oriented variant within the Dyna line, featuring upgraded suspension and brakes.
        
     
    
    
        
            Production Period Fxdx:
        
        
            The FXDX model was produced from 1999 to 2005.
        
     
    
        
            Manufacturer Location:
        
        
            USA (assembly typically in York, Pennsylvania or Milwaukee, Wisconsin)