🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna

Year:

2006

Chassis Designation:

FXD

👋 Introduction

Market Segment:

Harley-Davidson's Dyna platform represented a versatile and approachable cruiser segment, appealing to riders seeking classic styling with modern performance. It was positioned as a customizable platform for personalization.

Key Competitors:

Indian Chief models, other American V-twin cruisers from manufacturers like Victory, and some Japanese V-twin offerings from brands such as Honda (Shadow), Kawasaki (Vulcan), and Suzuki (Intruder) in certain configurations.

Platform Versatility:

The Dyna platform was known for its modular design, allowing for extensive customization and adaptation to different riding styles, from stripped-down bobbers to more touring-oriented setups.

Engine Character:

The Twin Cam 88 engine provided the signature Harley-Davidson V-twin rumble and torque, making it a desirable choice for riders prioritizing character and feel.

📋 Manual Details

Model Variants Covered:

FXDI Dyna Super Glide, FXDC Dyna Super Glide Custom, FXDB Dyna Street Bob, FXDWG Dyna Wide Glide

Page Count:

914

Manual Type:

Workshop Service Manual / Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Systems:

Engine disassembly, assembly, diagnosis, tuning, cooling system (air-cooled), lubrication system, fuel system (carbureted and EFI depending on model variant), ignition system, exhaust system.

Drivetrain Systems:

Clutch, primary drive, transmission (5-speed, Cruise Drive), final drive (belt drive system), wheel bearings, axle service.

Chassis Systems:

Frame, suspension (front fork and rear shocks), steering, brakes (front and rear disc brakes, hydraulic system), wheels, tires, fuel tank, fenders, seat, handlebars, foot controls.

Electrical Systems:

Battery, charging system (stator, regulator/rectifier), starting system (starter motor), ignition system (ignition module, spark plugs, coils), lighting system (headlight, taillight, turn signals), instrumentation, wiring diagrams, diagnostic codes (DTCs).

Maintenance Procedures:

Routine maintenance checks, oil changes, filter replacements, spark plug service, drive belt inspection and adjustment, brake fluid replacement, tire pressure checks, battery maintenance.

Diagnostic Procedures:

Troubleshooting guides for common issues, diagnostic trouble code (DTC) interpretation, electrical system testing, engine performance analysis.

Repair Procedures:

Complete disassembly and reassembly instructions for all major components, internal engine repairs, transmission overhauls, suspension rebuilds, brake caliper service, electrical component replacement.

Special Tool Requirements:

Identification and usage instructions for specialized Harley-Davidson tools required for specific repairs and adjustments.

Technical Depth:

Comprehensive coverage from basic maintenance to complete engine and transmission rebuilds, including detailed torque specifications, clearances, and assembly sequences. Suitable for professional technicians and experienced DIY mechanics.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution, searchable text and clear, legible diagrams.

Binding Type:

N/A (Digital PDF format)

Paper Type:

N/A (Digital PDF format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 88 V-twin

Displacement:

1450cc (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:

Pushrod activated, overhead valves, 2 valves per cylinder

Horsepower:

Approximately 65-70 HP (specifications can vary slightly based on model variant and tuning)

Torque:

Approximately 85-90 ft-lbs @ 3500 RPM (specifications can vary slightly based on model variant and tuning)

Fuel Delivery:

Keihin CV Carburetor (for most models) or Electronic Sequential Port Fuel Injection (ESPFI) on specific variants like FXDI

Fuel Type:

Unleaded gasoline, minimum 87 octane

Oil Capacity:

3.0 US qt. (2.8 L) for crankcase, additional oil in primary and transmission

Oil Type:

Harley-Davidson Genuine Motor Oil SAE 20W50 or equivalent API SG or higher.

🔧 Transmission

Transmission Type:

5-speed constant mesh, sequential manual transmission

Gear Ratios:

1st: 10.110, 2nd: 6.583, 3rd: 4.745, 4th: 3.775, 5th: 3.151 (Typical for 2006 models)

Primary Drive:

Duplex chain drive, 34/46 ratio

Final Drive:

Belt drive, 32/66 ratio (for most models)

Clutch Type:

Wet, multi-plate, diaphragm spring

Transmission Fluid Capacity:

24 oz. (0.71 L)

Transmission Fluid Type:

Harley-Davidson Genuine Formula + Transmission and Primary Chaincase Lubricant or equivalent.

📐 Dimensions

Wheelbase:

Approx. 62.8 in. (1595 mm) - varies slightly by model

Overall Length:

Approx. 90.5 in. (2299 mm) - varies slightly by model

Dry Weight:

Approx. 560-620 lbs (254-281 kg) - varies significantly by model variant

Gvwr:

Not typically specified by manufacturer for motorcycles in this class; rider and cargo limits apply.

Fuel Tank Capacity:

4.7 US gal. (17.8 L) for most models

🛡️ Safety Features

Crash Test Ratings:

Motorcycles are not subject to NHTSA crash test ratings in the same manner as passenger cars. Safety is determined by design and rider skill.

Braking System:

Dual-action, front and rear hydraulic disc brakes. Front typically features a 4-piston caliper, rear a 2-piston caliper.

Lighting:

Halogen headlight, taillight, brake light, front and rear amber turn signals.

Frame Construction:

Steel, cradle frame design for rigidity and vibration dampening.

Ergonomics:

Designed for rider comfort and control with handlebar positioning, seat height, and foot controls tailored to the cruiser riding posture.

💡 Technology Features

Audio System:

Optional factory-installed or dealer-installed radio/audio systems were available on some Dyna models, typically featuring AM/FM and auxiliary inputs. Not standard on all variants.

ABS:

Anti-lock Braking System (ABS) was an optional feature on select 2006 Dyna models. The manual would detail its operation and any specific diagnostic procedures.

Diagnostic Ports:

On-board diagnostics (OBD) for engine and electrical systems, accessible via specific connectors, often with associated diagnostic trouble codes (DTCs) explained in the manual.

🔧 Maintenance

Initial Service:

First service typically recommended at 1,000 miles (1,600 km) for oil change, filter replacement, and inspection.

Routine Maintenance:

Subsequent oil changes and filter replacements every 5,000 miles (8,000 km) or annually, whichever comes first. Drive belt check/adjustment every 10,000 miles (16,000 km).

Brake Fluid Replacement:

Recommended every two years or as per manual's specific interval.

Primary Chaincase Oil:

Harley-Davidson Genuine Formula + Transmission and Primary Chaincase Lubricant or SAE 50 motorcycle oil.

Transmission Oil:

Harley-Davidson Genuine Formula + Transmission and Primary Chaincase Lubricant or SAE 50 motorcycle oil.

Brake Fluid:

DOT 4 hydraulic brake fluid.

Engine Oil Filter Part Numbers:

Common part numbers include 63731-00, 63798-99A, or equivalent aftermarket filters.

Cam Chain Tensioner Wear:

Early Twin Cam 88 engines (pre-2007) are known to experience wear on the cam chain tensioners, potentially leading to noise or damage if not addressed. This manual would detail inspection and replacement procedures.

Oil Leaks:

Common areas for oil leaks can include primary cover gaskets, engine case seals, and rocker box gaskets. The manual provides guidance on gasket replacement and torque sequences.

Carburetor Adjustment:

CV carburetors may require periodic adjustment or cleaning for optimal performance, especially with age and mileage. Manual covers tuning procedures.

📚 Vehicle History

Founding Year:

1903

Core Philosophy:

Harley-Davidson is renowned for its American V-twin motorcycles, a strong brand identity, and a culture built around freedom, individuality, and the open road.

Dyna Introduction:

The Dyna line was introduced in 1991 as a replacement for the FXRS Sport Glide, featuring a new frame design and rubber-mounted engine for reduced vibration.

Twin Cam Introduction:

The Twin Cam 88 engine, introduced in 1999, became the heart of the Dyna models, offering increased displacement and improved performance over the Evolution engine.

Manufacturing Location:

Primarily manufactured in Milwaukee, Wisconsin, USA, and York, Pennsylvania, USA.

Sales Trend 2006:

2006 was a period of robust sales for Harley-Davidson, with the Dyna line contributing significantly to the brand's overall market share in the cruiser segment.

🏆 Awards & Recognition

Industry Acclaim:

Harley-Davidson motorcycles, including the Dyna line, have consistently been recognized for their iconic styling, sound, and rider experience, contributing to strong brand loyalty and a significant presence in motorcycle culture.