2004 Harley Davidson FLST FXST Softail Motorcycle Repair

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Type: Motorcycle

Vendor:

Sku: 144239

Tags: 2004 FLST FXST Harley Davidson Motorcycle Motorcycles Softail

Product variants

Description

This manual covers the 2004 motorcycles, including the FLSTC/FLSTCI Heritage Classic, FLSTF/FLSTFI Fat Boy, FLSTS/FLSTSI Heritage Springer, FXST/FXSTI Softail Standard, FXSTB/FXSTBI Night Train, FXSTS/FXSTSI Springer Softail, and FXSTD/FXSTDI Softail Deuce. These models are powered by the renowned Twin Cam 88B engine, an air-cooled, 45-degree V-twin displacing 88 cubic inches (1450cc). Known for their distinctive styling, comfortable ride achieved through hidden rear suspension, and powerful V-twin performance, the Softail line represents a significant part of the legacy. The 2004 models continue this tradition with a blend of classic aesthetics and evolving engineering. This comprehensive factory service and repair manual provides detailed information for the maintenance, diagnosis, and repair of your 2004 Softail. It covers all major systems, including the engine, fuel system, transmission, electrical components, braking system, and chassis. Within its pages, you will find step-by-step procedures for routine maintenance, engine tune-ups, component overhauls, and troubleshooting guides. Essential technical specifications, torque values, and wiring diagrams are also included to ensure accurate and efficient service. This manual is an indispensable resource for owners and technicians aiming to maintain the optimal performance and longevity of these iconic motorcycles.

🏷️ Basic Information

Identification

Make:

Harley-Davidson

Model Family:

Softail

Model Year:

Covered Models:

• FLSTC/FLSTCI Heritage Classic

• FLSTF/FLSTFI Fat Boy

• FLSTS/FLSTSI Heritage Springer

• FXST/FXSTI Softail Standard

• FXSTB/FXSTBI Night Train

• FXSTS/FXSTSI Springer Softail

• FXSTD/FXSTDI Softail Deuce

Codes

Vin Code Prefix:

👋 Introduction

Market Position

Manual Value Proposition:

An essential resource for owners and technicians seeking to maintain, repair, and troubleshoot their 2004 Harley-Davidson Softail motorcycles. Provides factory-level accuracy for DIY repairs and professional diagnostics.

Competitive Analysis

Manual Source Credibility:

Sourced from OEM (Original Equipment Manufacturer) or authorized factory reprints, ensuring the highest level of accuracy and completeness compared to aftermarket manuals.

Key Features

Downloadable PDF Benefits:

Instant download post-payment, convenient access on multiple devices (smartphones, tablets, computers), printable for workshop use without risking damage to a physical manual, lifetime protection policy against loss or damage.

📋 Manual Details

Coverage Areas

Manual Coverage Scope:

Comprehensive service, repair, and maintenance for all listed 2004 Harley-Davidson Softail models.

Manual Type

Manual Type:

OEM Factory Service Manual / Repair Manual / Shop Manual

Language

Language:

English

Format

Format:

Downloadable PDF

Page Count

Estimated Page Count:

Typically 500-800 pages (actual count not specified, but characteristic for comprehensive factory manuals).

📖 Manual Coverage

Systems Covered

Major Systems:

• General Information

• Routine Maintenance

• Engine (Removal/Installation, Specifications)

• Fuel System

• Lubrication and Cooling System

• Transmission

• Drive Chain & Sprockets

• Steering System

• Shocks/Suspension

• Body Work

• Intake & Exhaust Systems

• Electrical System

• Braking System

• Wheels and Tires

• Frame

• Instrument Panel

• Lighting System

• Ignition System

Procedures Included

Repair And Maintenance Procedures:

• Engine tune-up and overhaul

• Fuel injection system diagnosis and repair

• Carburetor adjustment and rebuilding (if applicable to specific variants)

• Ignition system troubleshooting

• Electrical component testing and replacement

• Transmission removal, disassembly, and reassembly

• Brake system service (pads, fluid, lines)

• Suspension fork service and shock absorber replacement

• Wheel bearing inspection and replacement

• Drive belt inspection and replacement

• Chassis lubrication

• Body panel removal and installation

• Exhaust system inspection and replacement

• Diagnostic procedures

• Troubleshooting guides

• Torque specifications for all fasteners

• Wiring diagrams

Technical Depth

Diagnostic And Rebuild Capabilities:

Advanced Troubleshooting, complete engine rebuilds, transmission overhaul, detailed electrical diagnostics, and chassis component repair.

📊 Manual Specifications

File Format

File Format Details:

Portable Document Format (PDF). Likely searchable text with high-resolution diagrams and images.

Print Quality

Print Readability:

Designed for clarity with clear text and legible diagrams, suitable for printing individual pages.

Binding Type

Binding Type:

N/A (Digital Downloadable PDF)

Paper Type

Paper Type:

N/A (Digital Downloadable PDF)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Harley-Davidson Twin Cam 88B (Fuel-injected or Carbureted variants based on model designation).

Engine Displacement:

88 cubic inches (1450cc)

Engine Configuration:

Air-cooled, 45-degree V-twin

Engine Bore X Stroke:

3.75 in. x 4.00 in. (95.25 mm x 101.60 mm)

Engine Compression Ratio:

8.8:1 (typical for Twin Cam 88)

Performance

Estimated Horsepower:

Approximately 60-65 HP (varies slightly by model and tuning).

Estimated Torque:

Approximately 65-70 ft-lbs (varies slightly by model and tuning).

Fuel System

Fuel Delivery System:

Electronic Sequential Port Fuel Injection (ESPFI) for 'I' suffix models (FLSTCI, FLSTFI, FLSTSI, FXSTFI, FXSTBI, FXSTSI, FXSTDI); Carbureted (e.g., Keihin CV) for non-'I' suffix models.

Fuel Tank Capacity:

4.0 gallons (15.1 L) for most Softail models, 5.0 gallons (18.9 L) for FLSTC/FLSTCI Heritage Classic.

🔧 Transmission

Standard

Transmission Type:

5-speed constant mesh

Transmission Case:

Trapezoidal (Softail specific design)

Features

Drive Type:

Belt drive (primary drive), Chain drive (final drive)

Clutch Type:

Wet, multi-plate

📐 Dimensions

Exterior

Wheelbase:

Approx. 64.0 - 66.0 inches (1626 - 1676 mm), varies by model.

Weights

Dry Weight:

Approx. 650 - 700 lbs (295 - 318 kg), varies by model.

Gross Vehicle Weight Rating:

Approx. 1000 - 1050 lbs (454 - 476 kg), varies by model.

🛡️ Safety Features

Ratings

Safety Standards:

Meets applicable U.S. EPA and CARB emission standards for motorcycles. Complies with DOT lighting and signaling requirements.

Active Features

Braking System:

Hydraulic disc brakes, front and rear. Dual piston calipers front, single piston calipers rear. Specific rotor sizes vary by model.

Passive Features

Lighting:

Halogen headlight, front and rear turn signals, brake light, tail light.

💡 Technology Features

Infotainment

Instrumentation:

Analog speedometer, tachometer (on some models), fuel gauge, odometer, trip meter, indicator lights for turn signals, oil pressure, neutral, high beam, and engine diagnostics.

Driver Assistance

Engine Management:

Engine Control Module (ECM) manages fuel injection, ignition timing, and idle speed for fuel-injected models. Carbureted models utilize mechanical and vacuum-actuated systems.

Connectivity

Diagnostic Ports:

Proprietary diagnostic connector for use with Harley-Davidson diagnostic tools (e.g., Digital Technician).

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 5,000 miles (8,000 km) or annually, whichever comes first. Check manual for specific oil type and capacity.

Primary Chain Tensioner Inspection:

Recommended at 10,000-15,000 mile intervals due to potential wear and failure modes.

Spark Plug Replacement:

Typically every 10,000 miles (16,000 km).

Fluid Specifications

Engine Oil Type:

Harley-Davidson Genuine V-Twin 20W50 Synthetic Motorcycle Oil or equivalent API CI-4 rated oil. Specific viscosity may vary by climate; consult manual.

Primary Chain Case Oil Type:

Harley-Davidson Genuine Primary Chain Case Lubricant or equivalent transmission lubricant.

Transmission Oil Type:

Harley-Davidson Genuine Formula Transmission Lubricant or equivalent SAE 80W-90 Hypoid Gear Oil.

Brake Fluid Type:

DOT 4 or DOT 5.1 (refer to specific model requirements, as some Harley-Davidsons specified DOT 5 silicone fluid in certain years/models; manual will clarify).

Known Issues

Twin Cam 88B Primary Chain Tensioner:

Early hydraulic tensioners on the Twin Cam 88B can wear prematurely, leading to rattling noises and potential failure. Upgraded or manual tensioner conversions are common modifications.

Rear Main Seal Leaks:

Some Twin Cam engines may be prone to rear main seal leaks over time, requiring engine disassembly for replacement.

Cam Chain Tensioner Wear:

Similar to the primary chain tensioner, cam chain tensioners can wear, requiring inspection and potential replacement.

📚 Vehicle History

Brand Heritage

Harley Davidson Legacy:

Harley-Davidson has a storied history of producing iconic American motorcycles, known for their distinctive styling, V-twin engines, and rider experience.

Model Evolution

Softail Development:

The Softail line, introduced in 1983, is characterized by its hidden rear suspension, designed to mimic the rigid frame look of vintage motorcycles while providing a more comfortable ride. The Twin Cam engine marked a significant evolution in Harley-Davidson's powertrain technology.

Production

2004 Model Year Significance:

The 2004 model year saw continued refinement of the Twin Cam engine and the Softail platform, offering a range of styles from classic cruisers to modern interpretations.

🏆 Awards & Recognition

Recognitions

Harley Davidson Market Standing:

Harley-Davidson motorcycles, including the Softail line, are consistently recognized for their iconic styling, cultural impact, and dedicated rider community. While specific awards for the 2004 models are not listed, the platform itself is a cornerstone of the brand's success.