🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHTCUI Ultra Classic Electra Glide

Year:

2006

Product Name:

2006 Harley Davidson TOURING FLHTCUI ULTRA Classic ELECTRA GLIDE Service Repair Manual

Chassis Code:

FLHTCUI

👋 Introduction

Market Segment:

Luxury Touring Motorcycle

Target Audience:

Owners seeking to perform their own maintenance and repairs, professional motorcycle technicians.

Key Competitors:

Indian Roadmaster, Honda Gold Wing, Yamaha Star Venture.

Vehicle Description:

The 2006 FLHTCUI Ultra Classic Electra Glide is Harley-Davidson's flagship touring motorcycle, known for its comfort, extensive features, and long-distance capabilities. It is designed for rider and passenger comfort on extended journeys.

Manual Value Proposition:

Provides detailed, manufacturer-level information essential for maintaining and repairing this complex and feature-rich motorcycle, saving owners time and money.

📋 Manual Details

Engine:

Included

Transmission:

Included

Fuel System:

Included

Electrical System:

Included

Brakes:

Included

Suspension:

Included

Chassis:

Included

Bodywork:

Included

Maintenance:

Included

Troubleshooting:

Included

Diagnostics:

Included

Wiring Diagrams:

Included

Page Count:

Estimated 800-1000+ pages (typical for comprehensive service manuals of this era and model complexity)

Manual Type:

Service and Repair Manual

Language:

English

Format:

Likely Digital (PDF); may also be available in Printed format

📖 Manual Coverage

Engine Mechanical:

Detailed coverage of Twin Cam 96 engine: cylinder heads, pistons, rings, crankshaft, connecting rods, camshafts, timing, valve train, lubrication system, cooling system (air-cooled).

Fuel And Emissions:

Fuel injection system (EFI), throttle body, injectors, fuel pump, fuel lines, evaporative emissions control system, O2 sensors, exhaust system.

Transmission And Drivetrain:

5-speed Cruise Drive transmission overhaul, clutch operation and adjustment, primary drive, final drive belt inspection and tensioning.

Electrical And Ignition:

Ignition system, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), battery, lighting system (headlight, taillight, signals), instrumentation, accessories, wiring harness, diagnostic connectors.

Brakes:

Front and rear brake system diagnostics, hydraulic lines, master cylinders, calipers, brake pads, brake rotors, bleeding procedures, ABS (if equipped).

Suspension And Steering:

Front fork (air-adjustable, if applicable) maintenance and repair, rear shock absorbers, steering head bearing adjustment and replacement, wheel bearing inspection.

Chassis And Frame:

Frame inspection, front and rear fender mounting, saddlebag mounting, fairing attachment, crash bar installation and removal.

Body And Trim:

Fairing disassembly and reassembly, windshield adjustment, seat removal and installation, luggage system (saddlebags, tour-pak) maintenance, fuel tank mounting.

Routine Maintenance:

Oil changes, filter replacements, air filter service, spark plug replacement, belt tension checks, brake fluid flush, tire pressure checks.

Engine Overhaul:

Complete engine disassembly, inspection, repair, and reassembly of all internal components.

Transmission Repair:

Gearbox disassembly, rebuild, and reassembly, including shift drum, pawls, and related components.

Electrical Diagnostics:

Troubleshooting electrical faults using multimeters, diagnostic codes, and wiring diagrams. Battery testing, charging system analysis.

Brake System Service:

Brake pad replacement, caliper servicing, rotor replacement, hydraulic system maintenance, ABS bleeding procedures.

Suspension Service:

Fork seal replacement, fork oil changes, rear shock adjustment and replacement, steering head bearing service.

Fuel System Cleaning And Repair:

Fuel injector cleaning, throttle body inspection, fuel filter replacement.

Bodywork Repair And Adjustment:

Fairing panel alignment, windshield replacement, saddlebag latch repair.

Depth Of Coverage:

Comprehensive. Covers everything from basic scheduled maintenance to full engine and transmission rebuilds, and detailed electrical system diagnostics.

Diagnostic Codes:

Includes specific diagnostic trouble codes (DTCs) and their interpretation/resolution procedures.

Torque Specifications:

Detailed torque values for all critical fasteners and assembly points.

Special Tools:

Lists and describes required special tools for various procedures.

📊 Manual Specifications

File Format Quality:

High-resolution digital format (PDF) with clear, legible text and diagrams. Searchable text functionality is highly desirable.

Print Quality:

N/A (for digital format); for printed, expects durable paper, clear ink, and professional binding.

Binding Type:

N/A (for digital format); for printed, typically spiral-bound or saddle-stitched for lay-flat usability.

Paper Type:

N/A (for digital format); for printed, durable, semi-gloss paper to withstand workshop environments.

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 96 V-twin

Displacement:

96 cu in (1584 cc)

Bore X Stroke:

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

Compression Ratio:

8.8:1

Valve Train:

Overhead valve (OHV), 4 valves per cylinder (2 exhaust, 2 intake), pushrod actuated.

Horsepower:

Approx. 70-75 HP (at crank, estimated for 2006 model year; actual figures vary)

Torque:

Approx. 88-92 ft-lbs @ 3500 RPM (at crank, estimated for 2006 model year; actual figures vary)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Unleaded gasoline, minimum 91 octane recommended

Fuel Tank Capacity:

5.0 gallons (18.9 L)

🔧 Transmission

Transmission Type:

5-speed Cruise Drive manual

Gear Ratios:

1st: 9.59; 2nd: 6.65; 3rd: 4.94; 4th: 3.83; 5th: 3.15

Primary Drive:

Patented dual-clutch, 37/59 ratio

Final Drive:

Belt drive, 32/66 ratio

Clutch Type:

Multi-plate, wet clutch

Transmission Fluid:

Harley-Davidson Syn3 or equivalent SAE 20W-50 engine oil (primary and transmission)

📐 Dimensions

Length:

103.1 in. (2619 mm)

Width:

37.6 in. (955 mm)

Height:

63.5 in. (1613 mm)

Wheelbase:

63.5 in. (1613 mm)

Ground Clearance:

5.1 in. (130 mm)

Saddlebag Capacity:

Approx. 2.25 cu ft (63.7 L) total

Tour Pak Capacity:

Approx. 2.4 cu ft (68 L)

Dry Weight:

Approx. 775 lbs (351 kg)

Gross Vehicle Weight Rating Gvwr:

1360 lbs (617 kg)

Payload Capacity:

Approx. 585 lbs (265 kg)

🛡️ Safety Features

Safety Ratings:

Motorcycle safety is primarily focused on active safety systems and rider preparedness; no formal crash test ratings like automobiles.

Brakes:

Four-piston calipers, front and rear disc brakes. ABS (Anti-lock Braking System) available as an option or standard on certain trims.

Lighting:

Halogen headlight, integrated turn signals, stop/tail lights. Fairing provides wind protection.

Frame Construction:

Steel cradle frame designed for stability.

Passenger Features:

Comfortable seating, armrests, and backrest for passenger.

💡 Technology Features

Audio System:

Factory-installed stereo system with AM/FM radio, cassette player, and CB/intercom (may vary by specific package).

Cruise Control:

Electronic cruise control system for highway comfort.

ABS:

Anti-lock Braking System available as an option on FLHTCUI models for enhanced braking control.

Diagnostic Port:

Industry-standard diagnostic port for accessing engine and system data, facilitating troubleshooting with compatible tools.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles or 6 months, whichever comes first (Harley-Davidson recommendation).

Primary Chain Tension:

Check every 10,000 miles or annually.

Spark Plug Replacement:

Typically every 10,000-15,000 miles (refer to manual for exact specification).

Brake Fluid Flush:

Every 2 years or as recommended by fluid condition.

Engine Oil:

Harley-Davidson Genuine V-Twin 20W-50 or equivalent (e.g., SYN3)

Engine Oil Capacity:

3.5 US quarts (3.3 L) with filter change.

Primary Chain Case Oil:

Harley-Davidson Syn3 or equivalent SAE 20W-50 engine oil.

Primary Chain Case Oil Capacity:

2.7 US quarts (2.6 L).

Transmission Oil:

Harley-Davidson Syn3 or equivalent SAE 20W-50 engine oil (shared with primary).

Brake Fluid:

DOT 5.1 Silicone-based fluid (check manual for specific Harley-Davidson part number and compatibility).

Cam Chain Tensioners:

Early Twin Cam models (pre-2007) can experience wear in the hydraulic cam chain tensioners, potentially leading to noise or failure. Upgraded higher-pressure tensioners are a common modification.

Crankshaft Runout:

Some Twin Cam engines may have slightly excessive crankshaft runout, which can impact bearing longevity. The manual will provide specifications for checking this.

Fuel Injector Clogging:

Can occur due to poor fuel quality or sediment. Regular use of quality fuel and occasional injector cleaner is recommended.

Rear Shock Seals:

Can develop leaks over time, especially with age and mileage. The manual covers seal replacement.

📚 Vehicle History

Brand History:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and distinctive styling.

Electra Glide History:

The Electra Glide lineage dates back to the 1960s, evolving from basic touring bikes to the feature-rich, electronically sophisticated models of the 21st century.

Twin Cam Introduction:

The Twin Cam engine platform was introduced in 1999, with the 96 cubic inch version becoming standard on many touring models by 2007, but present in earlier models like the 2006 FLHTCUI.

Production Location:

United States (York, Pennsylvania; Milwaukee, Wisconsin)

🏆 Awards & Recognition

Model Awards:

Specific awards for the 2006 model year are less common than general recognition for the Ultra Classic Electra Glide as a benchmark in the touring segment. Often cited in 'Best Touring Bikes' lists.