🏷️ Basic Information

Make:

Harley-Davidson

Model:

FXDWG Dyna Wide Glide

Year:

2004

Model Code:

FXDWG

Engine Configuration:

V-Twin, Air-Cooled

Fuel System:

Electronic Fuel Injection (EFI)

👋 Introduction

Description:

The Harley-Davidson FXDWG Dyna Wide Glide is a cruiser motorcycle known for its distinctive styling, inspired by custom choppers. It offers a relaxed riding position and a classic Harley-Davidson V-twin experience, appealing to riders who value heritage and iconic design.

Competitors:

Competes with other large-displacement cruisers from manufacturers like Indian Motorcycle, and to some extent, Japanese brands offering similarly styled models.

Design:

Long wheelbase, low seat height, pullback handlebars, wide front fork, teardrop fuel tank, classic chrome accents.

Engine Type:

Harley-Davidson's Twin Cam 88 engine evolution for this period, known for its torque and distinctive sound.

Purpose:

Essential for owners and technicians to maintain, diagnose, and repair the FXDWG Dyna Wide Glide, ensuring optimal performance and longevity.

📋 Manual Details

Primary Coverage:

Service, Repair, Maintenance, Troubleshooting, Diagnostics

Estimated Page Count:

300+

Type:

Factory Service Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Systems:

Engine assembly, disassembly, inspection, troubleshooting, performance tuning, oil pump, lubrication system, cooling system (air-cooled), fuel injection system, ignition system, exhaust system.

Transmission Drivetrain:

Clutch, primary drive, transmission gears, shift mechanism, final drive (belt drive), troubleshooting, repair.

Chassis Frame:

Frame inspection, front fork assembly, steering head bearings, rear suspension, swingarm, wheel bearings, alignment.

Electrical System:

Wiring diagrams, battery, charging system (stator, regulator/rectifier), ignition system (ignition module, coils, spark plugs), starting system (starter motor, solenoid), lighting system (headlight, taillight, turn signals), instrumentation, switches, fuses, relays, EFI control module (ECM).

Braking System:

Front and rear brake system inspection, service, repair, hydraulic lines, brake calipers, master cylinders, brake pads, brake discs, bleeding procedure.

Fuel System:

Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, throttle body, diagnostics of EFI system.

Bodywork Fittings:

Fenders, fuel tank, seat, handlebars, controls, fairings (if applicable), mounting hardware, trim.

Routine Maintenance:

Oil changes, filter replacement, spark plug replacement, air filter cleaning/replacement, brake pad inspection, chain/belt tension adjustment, tire pressure checks, lubrication of pivot points.

Diagnostic Procedures:

Troubleshooting guides for common and uncommon issues, diagnostic trouble codes (DTCs) for EFI system, circuit testing, component testing.

Repair Procedures:

Detailed step-by-step instructions for disassembly, assembly, and repair of all major components and systems.

Performance Tuning:

Information on engine tuning, EFI mapping adjustments (where applicable), and performance upgrades.

Wiring Diagrams:

Comprehensive electrical schematics for easy diagnosis and repair of the electrical system.

Depth:

Comprehensive, covering everything from basic routine maintenance to complete engine and transmission overhauls, including advanced electrical diagnostics.

📊 Manual Specifications

Format:

PDF

Searchability:

Searchable text (OCR'd)

Quality:

High-resolution, suitable for printing.

Binding:

N/A (Digital PDF)

Paper:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 88

Displacement:

1450 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

Valve Train:

Overhead valve (OHV), 2 valves per cylinder

Horsepower Estimate:

Approx. 60-65 HP (Varies by specific tune and dyno)

Torque Estimate:

Approx. 75-80 ft-lbs (Varies by specific tune and dyno)

Injection Type:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Unleaded Gasoline (91 Octane Recommended)

Oil System:

Dry Sump Lubrication

Oil Capacity:

3.5 US quarts (3.3 Liters) with filter change

Ignition Type:

Electronic Ignition (SE for some models)

Spark Plugs:

Harley-Davidson recommended (e.g., NGK D8EA or equivalent)

🔧 Transmission

Type:

5-speed constant mesh

Primary Drive:

Duplex chain, wet clutch

Final Drive:

Belt drive

Clutch Type:

Multi-plate, wet

Transmission Fluid Type:

Harley-Davidson Formula+ Transmission Lubricant (or equivalent API GL-4, SAE 50)

Capacity:

23.7 US fluid ounces (0.7 Liters)

📐 Dimensions

Wheelbase:

64.5 inches (1638 mm)

Length:

92.1 inches (2339 mm)

Seat Height Laden:

26.1 inches (663 mm)

Ground Clearance:

4.4 inches (112 mm)

Dry Weight:

Approx. 635 lbs (288 kg)

Gross Vehicle Weight Rating Gvwr:

925 lbs (420 kg)

Fuel Tank Capacity:

5.0 US gallons (18.9 Liters)

Front Tire Size:

100/90-19 57H

Rear Tire Size:

160/70B17 73V

Front Wheel Type:

Cast Aluminum

Rear Wheel Type:

Cast Aluminum

🛡️ Safety Features

Crash Test Ratings:

N/A (Motorcycle safety ratings are not standardized like automotive)

Braking:

Dual disc front brakes, single disc rear brake.

Lighting:

Halogen headlight, LED taillight, front and rear turn signals.

Frame Construction:

Steel cradle frame designed for stability.

💡 Technology Features

System:

Basic instrumentation: speedometer, tachometer (often optional or integrated), odometer, trip meter, fuel gauge, indicator lights.

Features:

N/A (No electronic driver assistance features typically found on this model)

Features:

N/A (No integrated smartphone or Bluetooth connectivity)

Description:

The Electronic Fuel Injection system provides precise fuel metering for improved throttle response, fuel efficiency, and emissions control compared to carburetors.

🔧 Maintenance

First Service:

1,000 miles (1,600 km) or 6 months

Subsequent Service:

Every 5,000 miles (8,000 km) or 12 months thereafter

Engine Oil:

Harley-Davidson V-Twin Synthetic (or SAE 20W-50 motorcycle oil meeting Harley-Davidson specifications)

Primary Chain Case Fluid:

Harley-Davidson Formula+ Transmission Lubricant

Brake Fluid:

DOT 4

Fork Oil:

Harley-Davidson Spectro HD 20W or equivalent

Potential Concerns:

Early Twin Cam engines could experience some oil consumption; cam chain tensioner wear (though less prevalent on later models like '04 than very early ones); potential for stator failure; clutch cable adjustment.

Efi Diagnostics:

While EFI offers benefits, troubleshooting can require specialized tools or knowledge of sensor readings and fuel pressure.

📚 Vehicle History

Legacy:

Harley-Davidson has a rich heritage dating back to 1903, renowned for its iconic V-twin engines and distinctive American motorcycle culture.

Dyna Series:

The Dyna family, introduced in 1991, featured a blend of traditional styling with modern engineering, characterized by its separate transmission and engine cases, and a rubber-mounted engine for reduced vibration. The Wide Glide variant specifically adopted chopper styling cues.

Manufacturing Location:

United States

2004 Updates:

This model year falls within the evolution of the Twin Cam 88 engine and typically features the electronic fuel injection system, offering improved performance and emissions compared to earlier carbureted models.

🏆 Awards & Recognition

Motorcycle Type:

Recognized for its iconic styling and faithful representation of the chopper subculture in a production motorcycle.

Owner Satisfaction:

Generally high owner satisfaction for its target market, appreciating the Harley-Davidson riding experience and customization potential.