🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHTCUI Ultra Classic Electra Glide EFI

Year:

2004

Trim:

Ultra Classic Electra Glide EFI

Vehicle Type:

Touring Motorcycle

Harley Davidson Model Code:

FLHTCUI

👋 Introduction

Positioning:

The FLHTCUI Ultra Classic Electra Glide EFI represented the pinnacle of Harley-Davidson's touring capabilities for 2004, offering unmatched comfort, amenities, and long-distance cruising potential.

Target Audience:

Touring enthusiasts, long-distance riders, and those seeking a premium, feature-rich motorcycle experience.

Competitors:

Primary competitors included other large displacement touring motorcycles from brands like Honda (Gold Wing), Kawasaki (Voyager), and Victory (Vision).

Defining Features:

Vast luggage capacity (saddlebags and tour-pak), integrated audio system, cruise control, comfortable seating for rider and passenger, fairing with windscreen for wind protection, anti-lock braking system (ABS).

Manual Value Proposition:

This manual provides the essential technical knowledge to maintain, repair, and optimize the performance of the 2004 Ultra Classic Electra Glide EFI, ensuring its longevity and rider satisfaction.

📋 Manual Details

Primary Coverage:

Full Service, Repair, and Workshop Procedures

Secondary Coverage:

Maintenance Schedules, Troubleshooting, Diagnostics, Electrical Schematics, Wiring Diagrams, Component Overhaul

Estimated Pages:

Approximately 800-1000 pages (typical for this model year and manual type)

Type:

Service Repair Workshop Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine:

Detailed inspection, disassembly, assembly, tuning, troubleshooting of Twin Cam 88 EFI engine.

Fuel System:

EFI system components (throttle body, fuel injectors, fuel pump, fuel pressure regulator), diagnostics, service.

Ignition System:

Ignition module, spark plugs, ignition coils, troubleshooting.

Transmission:

5-speed Cruise Drive transmission overhaul, inspection, clutch service, primary drive maintenance.

Electrical System:

Comprehensive wiring diagrams, charging system (alternator, stator, regulator), starting system (starter motor, solenoid), lighting, instrumentation, accessories, battery service.

Chassis And Suspension:

Front fork (showa), rear shock absorbers, swingarm, wheel bearings, steering head bearings, frame inspection.

Braking System:

Hydraulic brake systems (front and rear calipers, master cylinders, brake lines, fluid flush and bleed), brake pad replacement, rotor inspection.

Bodywork And Trim:

Fairings, saddlebags, tour-pak, fenders, seat removal and installation, chrome components care.

Comfort Features:

Cruise control system diagnosis and repair, audio system service, climate control (if applicable).

Maintenance:

Regular scheduled maintenance, oil changes, filter replacements, spark plug service, lubrication points.

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon issues, fault code interpretation.

Repair:

Complete disassembly and reassembly instructions for all major vehicle components.

Diagnostics:

EFI system diagnostics, component testing, use of diagnostic tools.

Depth:

Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds.

Detail Level:

Expert-level, suitable for professional mechanics and experienced DIY enthusiasts.

📊 Manual Specifications

Format:

PDF

Searchable:

Yes, fully searchable text

Image Quality:

High-resolution images, diagrams, and illustrations

Printability:

Printable pages for on-hand reference

Binding:

Not Applicable (Digital Format)

Paper Type:

Not Applicable (Digital Format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 88 V-Twin

Displacement:

1450 cc (88 cubic inches)

Bore X Stroke:

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

Compression Ratio:

8.8:1

Valve Train:

Pushrod-actuated, overhead valves with two valves per cylinder

Cooling System:

Air-cooled

Horsepower:

Approximately 67 hp @ 5200 rpm (crank)

Torque:

Approximately 86 ft-lbs @ 3500 rpm (crank)

Induction:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Unleaded gasoline, minimum 91 octane (Research Octane Number)

Fuel Capacity:

5.0 US gallons (18.9 L)

🔧 Transmission

Type:

5-speed Cruise Drive constant mesh, sequential gear selection

Gear Ratios:

1st: 9.59, 2nd: 6.65, 3rd: 4.94, 4th: 3.81, 5th: 3.15

Primary Drive:

Plated, heavy-duty, rubber-isolated chain drive

Final Drive:

Carbon fiber belt drive, 32/66 ratio

Clutch:

Hydraulically actuated, 9-plate, wet clutch

Transmission Oil Capacity:

2.8 US quarts (2.65 L)

Transmission Oil Specification:

Harley-Davidson Formula + Transmission & Primary Chaincase Lubricant (or equivalent GL-4, SAE 50 API MT-1, GL-5 is NOT recommended)

📐 Dimensions

Length:

102.0 in. (2591 mm)

Width:

38.0 in. (965 mm)

Height:

61.0 in. (1550 mm) (to top of windshield)

Seat Height Laden:

29.5 in. (750 mm)

Ground Clearance:

5.1 in. (130 mm)

Saddlebag Capacity:

Approximately 2.2 cubic feet total

Tour Pak Capacity:

Approximately 2.4 cubic feet

Dry Weight:

818 lbs. (371 kg)

Gross Vehicle Weight Rating:

1360 lbs. (617 kg)

Payload Capacity:

542 lbs. (246 kg)

🛡️ Safety Features

Crash Test Ratings:

Not applicable for motorcycles in the same manner as automobiles.

ABS:

Yes, Anti-lock Braking System (standard on FLHTCUI)

Linked Brakes:

No

Traction Control:

No

Lighting:

Halogen headlight, auxiliary passing lamps, LED tail/stop light, amber turn signals.

Reflectorization:

Reflectors on front/rear, saddlebags, and tour-pak for visibility.

Horn:

Dual-tone horn

💡 Technology Features

Audio System:

Integrated AM/FM stereo radio with CB and intercom functionality, cassette player.

Display:

Analog gauges for speedometer, tachometer, fuel, oil pressure, voltage; LCD display for odometer, trip meters, gear indicator, clock.

Cruise Control:

Electronic cruise control (standard)

Cb Intercom:

Yes, integrated CB radio and rider-passenger intercom system.

Auxiliary Lighting:

Front fairing-mounted passing lamps.

🔧 Maintenance

First Service:

1000 miles (1600 km) or 6 months, whichever comes first.

Subsequent Oil Change:

Every 5000 miles (8000 km) or 12 months.

Air Filter Service:

Inspect at every 5000 miles (8000 km), replace as needed.

Spark Plug Replacement:

Replace at 10,000-15,000 miles (16,000-24,000 km) or as per manual recommendations.

Brake Fluid Flush:

Every 24 months.

Engine Oil Type:

Harley-Davidson 20W-50 SYN3 or equivalent SAE 20W-50 motorcycle-specific oil (API SG, SH, SJ, or higher).

Engine Oil Capacity:

4.0 US quarts (3.8 L) with filter change.

Primary Chaincase Oil:

Harley-Davidson Formula + Transmission & Primary Chaincase Lubricant or equivalent (see Transmission Oil Specification).

Brake Fluid Type:

DOT 4 (for ABS models, consult manual for specific requirements).

Fork Oil Type:

Harley-Davidson Type 'E' or 'HD 10W' fork oil, or equivalent (check manual for specific viscosity).

Common Wear Items:

Cam chain tensioners (early Twin Cam 88), stator failures, wheel bearing wear, clutch cable adjustment (if not hydraulic), exhaust system leaks.

Efi Considerations:

Ensure proper battery voltage for starting and ECU operation, potential for idle control issues if throttle body is dirty.

📚 Vehicle History

Heritage:

Harley-Davidson, founded in 1903, has a long-standing reputation for building iconic V-twin motorcycles, particularly in the touring segment.

Electra Glide Lineage:

The Electra Glide lineage dates back to the 1960s, evolving significantly with technological advancements while retaining its core touring identity.

Twin Cam 88 Introduction:

The Twin Cam 88 engine was introduced in 1999, offering increased displacement and improved performance over the Evolution engine.

Production Era:

The 2004 model year is part of the early Twin Cam 88 era for the Ultra Classic Electra Glide.

Manufacturing Location:

York, Pennsylvania, USA and Milwaukee, Wisconsin, USA (assembly)

🏆 Awards & Recognition

Market Reputation:

The Ultra Classic Electra Glide is consistently lauded for its comfort, touring capability, and iconic status within the motorcycle industry.

Industry Rankings:

Often ranked among the top touring motorcycles by motorcycle publications for its comprehensive feature set and rider comfort.