Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson owners, independent mechanics, enthusiasts performing DIY maintenance and repairs.
Competitors:
Other Harley-Davidson Dyna models of the era, similar displacement cruisers from Indian, Japanese manufacturers (e.g., Yamaha V-Star, Honda Shadow, Kawasaki Vulcan).
Model Characteristics:
The FXDX Dyna Super Glide Sport was known for its sportier ergonomics, dual front disc brakes, and more advanced suspension compared to other Dyna models of its time, appealing to riders seeking a more performance-oriented cruiser.
Engine:
Engine removal, disassembly, inspection, assembly, tuning, troubleshooting, specific components (crankcase, cylinders, pistons, heads, camshafts, valves, ignition, lubrication system, cooling system if applicable)
Transmission:
Gearbox removal, disassembly, inspection, assembly, clutch operation, primary drive system, troubleshooting
Fuel System:
Carburetor (Keihin CV) or fuel injection system (EFI) servicing, fuel pump, fuel lines, fuel tank maintenance
Electrical System:
Battery, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), ignition system (ignition module, spark plugs), lighting, instrumentation, wiring diagrams, troubleshooting electrical faults
Brakes:
Brake system servicing (front and rear calipers, master cylinders, brake lines, brake fluid replacement), rotor inspection, troubleshooting brake performance
Suspension:
Front fork (telescopic) disassembly, seal replacement, fluid changes; rear shock absorber servicing or replacement, adjustments
Frame And Bodywork:
Frame inspection, front fender, rear fender, fuel tank removal/installation, seat, handlebars, controls, footpegs, exhaust system servicing
Wheels And Tires:
Wheel bearing maintenance, tire inspection and replacement, wheel balancing
Preventative Maintenance:
Regular service intervals, lubrication points, fluid level checks, filter replacements, belt tension checks
Diagnostic Procedures:
Troubleshooting common problems, identifying symptoms, using diagnostic tools (if applicable)
Repair Procedures:
Step-by-step instructions for component repair and replacement, including detailed diagrams and torque specifications
Assembly Disassembly:
Complete breakdown and reassembly of major motorcycle components
Depth:
Comprehensive, covering routine maintenance to major engine and transmission overhauls, including electrical diagnostics and chassis component repair.
Engine Type:
Air-cooled, 45-degree V-twin, Evolution (Big Twin)
Displacement:
1449 cc (88 cubic inches)
Bore X Stroke:
3.75 in x 4.00 in (95.25 mm x 101.6 mm)
Compression Ratio:
8.8:1 (typical)
Valve Train:
Overhead valve (OHV), two valves per cylinder, operated by pushrods
Horsepower:
Approx. 65-70 HP (at crank, depending on specific tuning and dyno)
Torque:
Approx. 75-80 ft-lbs (at crank, depending on specific tuning and dyno)
Fuel Delivery:
Carburetor (Keihin CV 40mm) for most models, or Electronic Fuel Injection (EFI) on some variants.
Fuel Type:
Unleaded gasoline, minimum 87 octane
Type:
5-speed constant mesh, manual gearbox
Primary Drive:
Duplex chain, compensator sprocket
Clutch Type:
Wet, multi-plate, diaphragm spring
Transmission Oil Spec:
Harley-Davidson Formula + (or equivalent GL-4 gear oil, 75W-90)
Safety Features Overview:
As a motorcycle, safety is primarily rider-dependent. Key design elements include robust braking and stable chassis dynamics.
Braking System:
Dual 4-piston caliper disc brakes (front), Single 4-piston caliper disc brake (rear). FXDX often featured larger rotors for improved stopping power.
Lighting:
Halogen headlight, LED tail/brake lights, amber turn signals.
Audio System:
Optional audio systems were available, typically AM/FM radio with cassette or CD player. Manual would cover installation and basic operation if equipped.
ABS:
Anti-lock Braking System (ABS) was an optional feature on some models of this era, not standard. The manual would detail its operation and maintenance if equipped.
Cruise Control:
Cruise control was an optional accessory, not standard. The manual would cover installation and operation.
Initial Service:
First service typically at 1,000 miles (1,600 km): engine oil and filter change, primary chain case oil change, check belt tension, inspect brakes and tires, check all fasteners.
Subsequent Services:
Subsequent services typically every 5,000 miles (8,000 km): engine oil and filter, primary chain case oil, check belt, inspect brakes, clutch, and throttle cables. Ignition module and spark plug checks may be specified.
Annual Maintenance:
Annual inspection of brake fluid, all control cables, and tire condition, regardless of mileage.
Engine Oil:
Harley-Davidson SYN3 (synthetic) or equivalent SAE 20W-50 motorcycle oil meeting Harley-Davidson specifications.
Engine Oil Capacity:
Approx. 3.0 US quarts (2.8 liters) with filter change.
Primary Chain Case Oil:
Harley-Davidson Formula + (or equivalent GL-4 gear oil, 75W-90).
Primary Chain Case Oil Capacity:
Approx. 2.4 US quarts (2.3 liters).
Transmission Oil:
Harley-Davidson Formula + (or equivalent GL-4 gear oil, 75W-90).
Transmission Oil Capacity:
Approx. 1.0 US quart (0.95 liters).
Brake Fluid:
DOT 4 or DOT 5.1 (check specific model variant and manual recommendations, as some older Harley models used DOT 5 silicone fluid).
Cam Chain Tensioners:
Early models (pre-2007) used hydraulic tensioners that could wear out, potentially causing noise or engine damage. The manual would detail inspection and replacement procedures.
Crank Position Sensor:
Can fail, leading to starting problems or stalling. The manual provides diagnostic steps.
Voltage Regulator:
Can fail, leading to charging issues. The manual covers testing and replacement.
Carburetor Tuning:
Keihin CV carburetors require periodic tuning (idle mixture, jetting) for optimal performance, especially after modifications. The manual details this process.
Brand Identity:
Harley-Davidson, established in 1903, is renowned for its American V-twin motorcycles, cruiser styling, and a strong heritage of rider customization and community.
Dyna Lineage:
The Dyna line, introduced in 1991, featured a distinct frame with the engine rubber-mounted to reduce vibration compared to earlier Big Twins. The Super Glide Sport (FXDX) was a performance-oriented variant.
Fxdx Specialties:
The FXDX model was characterized by its sportier suspension (often with adjustable cartridges in the front forks and preload-adjustable shocks), dual front disc brakes, and a more aggressive riding posture, setting it apart from the more comfort-oriented Dyna models like the Wide Glide or Low Rider.
Production Period:
The 1450cc Evolution engine was produced from 1999 onwards. The FXDX model was produced in various forms until the Dyna line was discontinued and replaced by the Softail platform in 2018.
