🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna

Year:

2006

Platform:

Dyna

Vin Decoder Model Code:

Refer to VIN for specific model details (e.g., FXD, FXDX, FXDC, FXDB, FXDWG)

👋 Introduction

Positioning:

The definitive resource for owners and technicians maintaining the 2006 Harley-Davidson Dyna line.

Comparison:

Surpasses generic DIY guides by providing factory-level detail and accuracy, crucial for complex V-twin systems.

Features:

Essential for preserving performance, reliability, and resale value of a classic Harley-Davidson model.

Owner Benefit:

Empowers owners to perform a wider range of maintenance and repairs, saving time and money while ensuring correct procedures are followed.

📋 Manual Details

Primary Coverage:

Service, Maintenance, Repair, Troubleshooting

Engine Coverage:

Complete engine teardown, assembly, and tuning

Transmission Coverage:

All aspects of gearbox operation, repair, and clutch service

Electrical Coverage:

Wiring diagrams, component testing, and troubleshooting of electrical systems

Chassis Coverage:

Frame, suspension, brakes, wheels, and steering system maintenance and repair

Bodywork Coverage:

Fenders, fuel tank, seat, handlebars, and accessory mounting

Estimated Page Count:

400-600 (typical for comprehensive service manuals of this era)

Type:

Factory Service Manual (FSM) / Professional Repair Manual

Language:

English

Format:

Likely a high-quality printed manual or a searchable PDF document

📖 Manual Coverage

Engine Management:

Ignition timing, fuel injection (EFI) diagnostics, sensor testing, idle speed control

Fuel System:

Fuel pump operation, injector cleaning, fuel pressure testing, evaporative emission control (EVAP)

Exhaust System:

Muffler replacement, catalytic converter checks, exhaust leak detection

Cooling System:

Not applicable for air-cooled engines, but may cover oil cooler systems if equipped

Drivetrain:

Clutch adjustment and replacement, primary drive, transmission gear inspection, final belt drive maintenance

Brakes:

Hydraulic system bleeding, pad and rotor replacement, caliper service, master cylinder overhaul

Suspension:

Front fork overhaul, rear shock absorber replacement, spring preload adjustment

Steering:

Headset bearing adjustment and replacement, handlebar mounting

Wheels And Tires:

Tire pressure, wheel bearing inspection, tire replacement, spoke tension (if applicable)

Lighting And Signals:

Headlight, taillight, turn signal bulb replacement, wiring checks

Instrumentation:

Speedometer, tachometer, indicator lamp diagnostics

Charging System:

Stator, regulator/rectifier testing, battery maintenance

Starting System:

Starter motor testing, solenoid function

Routine Maintenance:

Oil changes, filter replacements, spark plug inspection, chain adjustment (if applicable), belt tension

Major Repairs:

Engine rebuilds, transmission overhauls, suspension component replacement

Troubleshooting:

Diagnostic flowcharts for common starting, running, and electrical issues

Diagnostics:

Reading diagnostic trouble codes (DTCs) if applicable to the 2006 EFI models

Specifications:

Torque values, clearances, fluid capacities, electrical specifications

Wiring Diagrams:

Complete and detailed wiring schematics for all electrical systems

Part Identification:

Exploded views and part number references for major assemblies

Depth:

Comprehensive from basic rider maintenance to full engine and transmission rebuilds

Detail Level:

Highly detailed, including specific tool requirements and step-by-step instructions with diagrams

📊 Manual Specifications

Format:

Physical print or Digital PDF. If PDF, likely searchable text with high-resolution images.

Quality:

Professional printing with durable paper. If digital, high resolution for clarity.

Binding:

Sturdy binding (e.g., spiral-bound, perfect-bound) for workshop use.

Paper:

Durable, high-quality paper that withstands grease and shop use.

⚙️ Engine Specifications

Engine Type:

Air-cooled, Evolution (V-Twin)

Displacement:

88 cubic inches (1449cc)

Bore X Stroke:

3.50 in. x 3.56 in. (88.9 mm x 90.4 mm)

Compression Ratio:

8.8:1 (typical for 2006 88ci)

Valvetrain:

OHV, 2 valves per cylinder, pushrod actuated

Fuel System:

Electronic Fuel Injection (EFI) with automatic idle speed control (AIS)

Ignition System:

Distributorless electronic ignition with knock sensor and individual spark plug timing

Horsepower:

Approximately 65-70 HP (estimated, actual may vary by specific model/tuning)

Torque:

Approximately 70-75 ft-lbs @ 3000-3500 RPM (estimated)

Fuel Type:

Unleaded gasoline, minimum 91 octane (R+M)/2 rating recommended for EFI models

Fuel Tank Capacity:

4.9 US gallons (18.5 liters) for most Dyna models

🔧 Transmission

Type:

5-speed constant mesh manual transmission

Clutch Type:

Wet, multi-plate, diaphragm spring

Final Drive:

Belt drive (40T rear sprocket, 32T primary drive sprocket typical)

Gear Ratios:

1st: 9.347, 2nd: 6.514, 3rd: 4.730, 4th: 3.750, 5th: 3.150 (typical)

Transmission Fluid Type:

Harley-Davidson Formula+ (or equivalent SAE 50 transmission oil)

Transmission Fluid Capacity:

24 US fl oz (0.7 L)

📐 Dimensions

Wheelbase:

Approx. 63.0 inches (1600 mm) depending on model variant

Seat Height:

Approx. 27.1 inches (688 mm) unladen

Dry Weight:

Approx. 590-640 lbs (268-290 kg) depending on model variant

Gvwr:

Refer to vehicle specific plate

🛡️ Safety Features

Crash Testing:

Not applicable for motorcycles in the same manner as cars; focus is on design integrity and component safety.

Braking System:

Dual-piston front caliper, single-piston rear caliper with hydraulic actuation. ABS was not standard or widely available on Dyna models in 2006.

Lighting:

Halogen headlamp, integrated taillight/stoplight, front and rear turn signals

💡 Technology Features

Audio System:

Optional audio systems were available, often integrated into the fairing or handlebar mounts, typically featuring AM/FM radio and CD player capabilities. Not standard on all models.

Cruise Control:

Available as an option on some 2006 Dyna models (e.g., FXDC, FXDL).

Diagnostics Port:

EFI models typically have a diagnostic connector for connecting service tools to retrieve DTCs and monitor engine parameters.

🔧 Maintenance

Oil Change:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Primary Chain Tensioner:

Inspect at 10,000 miles (16,000 km) and replace if necessary (automatic tensioner is recommended for later models, but manual check is crucial).

Spark Plugs:

Inspect every 10,000 miles (16,000 km), replace as needed.

Belt Drive Tension:

Check and adjust as needed according to service manual specifications (typically 1/4" to 1/2" deflection).

Brake Fluid Flush:

Every 2 years or as recommended by service manual (DOT 4).

Engine Oil:

Harley-Davidson 20W-50 SYN3 (or equivalent motorcycle-specific 20W-50).

Engine Oil Capacity:

Approximately 3.5 US quarts (3.3 L) with filter change.

Brake Fluid:

DOT 4 Hydraulic Fluid.

Primary Chain Tensioner:

The stock spring-loaded primary chain tensioner can wear prematurely, leading to chain slap and potential damage if not replaced with a more robust unit (e.g., Hayden or similar aftermarket automatic tensioner).

Carburetor Issues:

While 2006 models are primarily EFI, some earlier models might still be carbureted; carburetor tuning and float bowl leaks can be common. EFI issues usually relate to sensor failures or fuel delivery.

Regulator Rectifier Failure:

A common failure point across many Harley-Davidson models of this era, leading to battery charging issues.

Rocker Box Gasket Leaks:

Minor oil seepage from rocker box gaskets can occur over time and mileage.

📚 Vehicle History

Heritage:

Harley-Davidson, a legendary American motorcycle manufacturer with a rich history dating back to 1903, renowned for its V-twin engines and custom cruiser aesthetics.

Dynafamily Origin:

The Dyna platform was introduced in 1991, evolving from earlier FX models, characterized by its rubber-mounted engine for reduced vibration and a distinct twin-downtube frame.

2006 Updates:

The 2006 model year for the Dyna line featured the introduction of Electronic Fuel Injection (EFI) across most variants, replacing carburetors for better emissions and throttle response. Key models include the Super Glide (FXD), Super Glide Custom (FXDC), Low Rider (FXDLI with 1450cc EFI), Street Bob (FXDB), and Wide Glide (FXDWG).

Production Period:

The Dyna platform was produced from 1991 to 2017, with the 2006 model year representing a significant technological shift with the widespread adoption of EFI.

🏆 Awards & Recognition

Brand Awards:

Harley-Davidson is consistently recognized for its iconic design, V-twin performance, and the lifestyle it represents, often appearing on 'best of' lists for cruisers and motorcycles.

Industry Perception:

The 2006 Dyna models are well-regarded for their solid performance and classic styling, representing a sweet spot in the evolution of the Dyna platform before significant chassis changes in later years.