🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHTCUI Ultra Classic Electra Glide

Year:

2006

Vin Decoder Prefix:

1HD1

👋 Introduction

Positioning:

Flagship touring motorcycle, offering maximum comfort, features, and range for long-distance travel.

Competitors:

Honda Gold Wing, Indian Roadmaster, Yamaha Star Venture, BMW K1600 GTL.

Features:

Large fairings, ample luggage capacity (saddlebags, tour-pak), comfortable seating for rider and passenger, advanced touring amenities, V-twin engine.

Manual Purpose:

To provide comprehensive guidance for the diagnosis, maintenance, and repair of the 2006 Harley-Davidson FLHTCUI Ultra Classic Electra Glide.

📋 Manual Details

Primary Coverage:

Factory Service Repair

Scope:

Complete Motorcycle

Estimated Pages:

Hundreds (Specific count not provided, but implies comprehensive)

Type:

Factory Service Manual (FSM)

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Engine:

Fuel Injection, Ignition, Lubrication, Cooling, Mechanical Components, Diagnosis

Transmission:

Clutch, Gearbox, Final Drive, Maintenance, Repair, Troubleshooting

Electrical System:

Battery, Charging System, Ignition System, Lighting, Instruments, Audio System, Wiring Diagrams, ECM/ECU, Sensors

Chassis And Suspension:

Frame, Front Fork, Rear Suspension, Swingarm, Bearings, Wheel Alignment

Braking System:

Front and Rear Brakes, Hydraulic System, ABS (if equipped), Service Procedures

Fuel System:

Fuel Tank, Fuel Pump, Injectors, Fuel Lines, Evaporative Emission Control (EVAP)

Exhaust System:

Pipes, Mufflers, Catalytic Converter (if equipped), Mounting

Bodywork And Trim:

Fairing, Saddlebags, Tour-Pak, Seat, Fairing Mounts, Body Panel Removal and Installation

Controls:

Handlebars, Levers, Pedals, Cables, Throttle Control

Maintenance:

Scheduled Service, Fluid Changes, Filter Replacements, Lubrication Points, Inspections

Diagnostics:

Troubleshooting Guides, Symptom-Based Diagnosis, Diagnostic Trouble Codes (DTCs), Harley-Davidson Specific Diagnostic Tools

Repair:

Component Removal and Installation, Overhaul Procedures, Adjustment Specifications, Reassembly Instructions

Calibration And Adjustment:

Throttle Position Sensor (TPS) Calibration, Idle Speed Adjustment, Clutch Adjustment

Wiring And Schematics:

Complete Color Wiring Diagrams, Component Location Charts

Depth:

Comprehensive Engine Rebuild, Full Electrical System Diagnosis, Drivetrain Overhaul, Suspension and Brake Service

Detail Level:

Factory-level detail, suitable for professional technicians and advanced DIY mechanics

📊 Manual Specifications

Format:

PDF

Searchability:

Text-searchable (assumed for standard factory manuals)

Quality:

High-resolution, suitable for printing individual pages or sections

Binding Type:

N/A (Downloadable PDF)

Paper Type:

N/A (Downloadable PDF)

⚙️ Engine Specifications

Engine Family:

Harley-Davidson Twin Cam 96 V-Twin

Displacement:

96 cubic inches (1584cc)

Bore X Stroke:

3.75 in x 4.38 in (95.25 mm x 111.25 mm)

Compression Ratio:

8.9:1

Valve Train:

Overhead Valve (OHV), 4 valves per cylinder (2 per head), pushrod actuated.

Cooling System:

Air-cooled

Horsepower:

Approx. 70-75 HP (Manufacturer not explicitly stating, typical for Twin Cam 96)

Torque:

Approx. 88-92 ft-lbs @ 3500 RPM (Manufacturer not explicitly stating, typical for Twin Cam 96)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Unleaded gasoline, minimum 91 octane (RON+MON)/91 AKI

Oil Capacity:

4.0 US qt (3.8 L) with filter change

Oil Type:

Harley-Davidson SYN3 (Synthetic) or equivalent V-Twin specific engine oil meeting Harley-Davidson specifications.

🔧 Transmission

Type:

6-speed Cruise Drive Manual Transmission

Transmission Type:

N/A (Standard 6-speed manual)

Clutch:

Hydraulically actuated, multi-plate wet clutch

Final Drive:

Belt Drive

Transmission Oil Type:

Harley-Davidson Formula+ (GL-4 or GL-5 specification for gears)

Transmission Oil Capacity:

24 US fluid oz (0.7 L)

📐 Dimensions

Length:

103.5 in (2629 mm)

Width:

39.5 in (1003 mm)

Height:

62.0 in (1575 mm)

Wheelbase:

63.5 in (1612 mm)

Ground Clearance:

5.1 in (130 mm)

Dry Weight:

832 lbs (377 kg)

Gross Vehicle Weight Rating:

N/A (Typically not specified for motorcycles, implied by load capacity)

Saddlebag Capacity:

Approx. 2.2 cu ft (63 L) total

Tour Pak Capacity:

Approx. 2.4 cu ft (68 L)

🛡️ Safety Features

Crash Test Ratings:

N/A (Motorcycles are not typically rated by organizations like NHTSA or IIHS)

ABS:

Anti-lock Braking System (Standard on FLHTCUI)

Cruise Control:

Electronic Cruise Control (Standard)

Lighting:

Halogen Headlamp, Passing Lamps, Auxiliary Front and Rear Running Lights, Integrated Turn Signals

Horn:

Dual Tone Horn

💡 Technology Features

Audio System:

Harley-Davidson Advanced Audio System with AM/FM/WB tuner, CB/PA, Cassette player, and provision for CD changer or MP3 integration.

Speakers:

Fairing-mounted speakers, potentially rear passenger speakers.

Cruise Control System:

Electronic cruise control for highway comfort.

ABS:

Integrated Anti-lock Braking System (ABS) for enhanced stopping control.

Intercom:

Integrated rider-passenger intercom system.

Diagnostic Port:

Likely utilizes Harley-Davidson's proprietary diagnostic connectors, requiring specific tools (e.g., Digital Technician) for advanced diagnosis, which this manual will cover.

🔧 Maintenance

First Service:

1,000 miles (1,600 km) or 6 months, whichever comes first. Includes engine oil and filter change, primary chain tension check, and general inspection.

Subsequent Service:

Every 5,000 miles (8,000 km) or 12 months, whichever comes first. Includes engine oil and filter, primary lubrication, transmission oil, inspection of various components.

Spark Plug Replacement:

Typically every 10,000 - 20,000 miles (16,000 - 32,000 km), check manual for specific recommendation.

Drive Belt Inspection:

Regular inspection for wear and tension at each service interval.

Engine Oil:

Harley-Davidson SYN3 (20W-50) or equivalent V-Twin specific synthetic oil meeting Harley-Davidson specifications.

Primary Chain Case Oil:

Harley-Davidson Formula+ or equivalent V-Twin specific primary lubricant.

Transmission Oil:

Harley-Davidson Formula+ (GL-4 or GL-5 specification for gears) or equivalent V-Twin specific transmission lubricant.

Brake Fluid:

DOT 4 Synthetic Brake Fluid (check manual for specific Harley-Davidson part number or equivalent).

Common Wear Items:

Clutch wear, drive belt wear, suspension bushings, potential for exhaust header pipe leaks due to heat cycles, internal engine components (e.g., cam chain tensioners) as the bike ages.

Electrical Concerns:

Wiring harness integrity, voltage regulator, battery health, starter solenoid are common areas to inspect on older Harley-Davidsons.

Fuel System:

Fuel pump performance and injector cleanliness can be factors, especially with varied fuel quality.

📚 Vehicle History

Brand Identity:

Iconic American motorcycle manufacturer known for its V-twin engines and cruiser/touring motorcycles.

Electra Glide Lineage:

The Electra Glide line has been a cornerstone of Harley-Davidson's touring offerings since the late 1960s, evolving significantly with engine technology and features.

Twin Cam Introduction:

The Twin Cam engine platform was introduced in 1999, replacing the Evolution (Evo) engine. The Twin Cam 96 variant became standard on most Big Twin models in 2007, but was available on select models like this one in 2006.

Production Period:

Harley-Davidson motorcycles are produced in the United States.

🏆 Awards & Recognition

Model Awards:

While specific awards for the 2006 FLHTCUI model aren't readily documented, the Ultra Classic Electra Glide line consistently receives accolades for comfort, touring capability, and overall rider satisfaction in motorcycle publications and rider surveys.

Rider Satisfaction:

Generally high rider satisfaction for touring comfort and features. Often ranks well in 'best touring bike' categories.

Emissions:

Compliant with EPA and California Air Resources Board (CARB) emissions standards for its model year.