Segment:
Cruiser Motorcycle
Target Audience:
Owners seeking to maintain, repair, or customize their Harley Davidson Dyna models, including both professional technicians and experienced DIYers.
Differentiation:
This is the official factory service manual, providing the most accurate and comprehensive information directly from Harley Davidson, unlike generic aftermarket manuals.
Official Source:
Authored by Harley Davidson, ensuring accuracy and completeness of all procedures and specifications.
Digital Accessibility:
PDF format allows for easy viewing, searching, and printing of specific sections as needed.
Engine System:
Comprehensive coverage of the Twin Cam 88 engine, including disassembly, assembly, troubleshooting, and tuning for the EFI system.
Fuel System:
Detailed sections on the Electronic Fuel Injection (EFI) system, including sensors, fuel pump, injectors, throttle body, and diagnostic procedures.
Ignition System:
Coverage of the ignition module, spark plugs, and related components for optimal performance and troubleshooting.
Transmission System:
In-depth information on the 5-speed constant mesh transmission, including clutch, gearbox, and final drive maintenance and repair.
Electrical System:
Extensive coverage of the entire electrical system, including wiring diagrams, battery, charging system, lighting, starting system, and accessories.
Chassis System:
Detailed information on the Dyna frame, suspension (front fork and rear shocks), steering, and wheel bearings.
Brake System:
Complete guide to front and rear braking systems, including hydraulic components, pads, rotors, and bleeding procedures.
Bodywork And Trim:
Procedures for removing and installing body panels, fenders, fuel tank, seat, and other cosmetic components.
Routine Maintenance:
Covers all routine maintenance tasks such as oil changes, filter replacements, spark plug service, and lubrication schedules.
Troubleshooting:
Comprehensive diagnostic charts and procedures for identifying and resolving common and complex issues across all vehicle systems.
Component Repair And Rebuild:
Detailed step-by-step instructions for the disassembly, inspection, repair, and reassembly of major vehicle components.
Wiring Diagrams:
Full-color, easy-to-read wiring diagrams for all electrical circuits, crucial for diagnosing electrical faults.
Torque Specifications:
Precise torque values for all fasteners, essential for correct assembly and to prevent damage.
Special Tool Identification:
Identification and usage instructions for specialized tools required for specific repair procedures.
Depth:
Factory-level depth, suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from basic checks to complete engine and transmission overhauls.
File Type:
PDF (Portable Document Format)
Searchability:
Likely text-searchable PDF, enabling quick access to specific information.
Print Readability:
Designed for clear printing, with detailed diagrams and text.
Binding:
N/A (Digital Download - PDF)
Paper Quality:
N/A (Digital Download - PDF)
Engine Family:
Harley Davidson Twin Cam
Engine Configuration:
45-degree V-twin, air-cooled
Displacement:
1450cc (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)
Horsepower:
Approximately 65-70 HP (estimated, varies with tuning and conditions)
Torque:
Approximately 78-82 ft-lbs @ 3500 RPM (estimated, varies with tuning and conditions)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type Recommendation:
Unleaded gasoline, minimum 87 octane (check manual for specific Harley-Davidson recommendations)
Oil Type Recommendation:
Harley Davidson 20W-50 (specific part numbers will be in the manual)
Oil Capacity:
Approx. 3 quarts (2.8 liters) with filter change (verify in manual)
Length:
Approx. 90.5 inches (2298.7 mm)
Width:
Approx. 36.4 inches (924.6 mm)
Height:
Approx. 49.4 inches (1254.8 mm)
Dry Weight:
Approx. 635 lbs (288 kg)
Gross Vehicle Weight Rating:
Refer to manual for specific GVWR
Fuel Tank Capacity:
5.0 gallons (18.9 liters)
Wheelbase:
63.5 inches (1612.9 mm)
Crash Test Data:
Motorcycle safety ratings are typically not standardized like automobiles. Manual will provide mechanical safety-related component information.
Braking System:
Dual front disc brakes, single rear disc brake with hydraulic actuation. Manual details maintenance and potential upgrades.
Lighting System:
Halogen headlamp, LED tail lamp, front and rear turn signals. Manual covers bulb replacement and electrical checks.
Frame Construction:
Steel cradle frame designed for stability and handling. Manual details frame inspection and repair.
Audio System:
Factory systems on this model were often optional or basic, typically including AM/FM radio. Manual may cover installation and basic troubleshooting of factory-installed units.
ABS:
ABS (Anti-lock Braking System) was an optional feature for 2004 Dyna models. The manual will cover its components and diagnostics if equipped.
Diagnostic Ports:
Features diagnostic connectors (e.g., for the Delphi-based EFI system) allowing for connection to diagnostic tools for engine data retrieval and tuning. Manual details their location and use.
Efi Controller:
The manual provides detailed schematics and operational parameters for the Engine Control Module (ECM) and associated sensors.
First Service:
Typically at 1,000 miles (1600 km) for engine oil, filter change, and general inspection. Manual will specify exact mileage.
Subsequent Service:
Every 5,000 miles (8,000 km) for routine checks, lubrication, and fluid changes. Manual provides a detailed schedule.
Engine Oil Spec:
Harley Davidson 20W-50 Synthetic (check manual for exact Harley-Davidson part number)
Primary Chain Case Fluid Spec:
Harley Davidson Formula+ Transmission and Primary Chaincase Lubricant (check manual for exact Harley-Davidson part number)
Brake Fluid Spec:
DOT 4 Brake Fluid (confirm specific type in manual)
Fork Oil Spec:
Refer to manual for specific fork oil viscosity and type (e.g., Harley Davidson Type E or SE Fluid)
Common Wear Items:
Typical wear items include brake pads, tires, drive belt, clutch plates, and spark plugs. Manual addresses their inspection and replacement.
Efi System Considerations:
EFI systems can be sensitive to fuel quality and sensor failures. Manual provides diagnostic procedures for fuel delivery and sensor issues.
Transmission Noise:
Some Twin Cam transmissions can exhibit normal operational noise; manual clarifies what is considered normal versus indicative of a problem.
Legacy:
Harley Davidson boasts a rich heritage dating back to 1903, synonymous with American motorcycle culture and performance.
Dyna Lineage:
The Dyna line, introduced in 1991, represents Harley Davidson's approach to a blend of classic styling and modern performance, often catering to riders seeking a more performance-oriented cruiser than the Softail line.
Super Glide Sport Variant:
The FXDXI variant specifically emphasizes sportier ergonomics and handling, often featuring upgraded suspension and brakes compared to standard Dyna models.
Manufacturing Location:
Typically manufactured in Milwaukee, Wisconsin, USA, or Kansas City, Missouri, USA for Harley Davidson motorcycles of this era.
Production Period:
The Dyna platform was produced from 1991 through 2017. The FXDXI was a specific model within this platform for certain years.
Model Accolades:
While specific awards for the 2004 FXDXI might not be readily available, the Dyna platform consistently received praise for its blend of performance and handling within the cruiser segment.
Owner Satisfaction:
Harley Davidson motorcycles, particularly the Dyna line, generally enjoy high owner satisfaction and brand loyalty, often attributed to their customization potential and iconic status.