🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna

Year:

2008

Product Type:

Service Repair Workshop Manual Download

Manual Code Convention:

Factory service manuals typically follow internal manufacturer coding, not publicly standardized.

👋 Introduction

Segment:

Cruiser motorcycle segment

Target Audience:

Harley-Davidson Dyna owners, independent repair shops, motorcycle enthusiasts.

Competitors Platform:

Competes with other cruiser platforms from brands like Indian Motorcycles, Victory Motorcycles (historical), and Japanese manufacturers' cruiser lines.

Vehicle Appeal:

The Dyna platform is known for its muscular styling, accessible riding position, and a good balance of performance and comfort for cruising.

Manual Value Proposition:

Provides factory-level repair and maintenance information for owners and technicians, enabling self-sufficiency and accurate repairs.

📋 Manual Details

Primary Coverage:

Harley-Davidson Dyna family of motorcycles

Specific Models Covered:

Includes coverage for models such as the Super Glide, Street Bob, Low Rider, Fat Bob, and Switchback (depending on specific Dyna sub-variants for 2008).

Estimated Page Count:

Typically 600-900+ pages for a complete factory service manual of this era.

Type:

Factory Service Repair Workshop Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Powertrain:

Engine, transmission, clutch, drivetrain (primary and secondary).

Chassis:

Frame, suspension (front forks, rear shocks), steering, wheels, tires, brakes (front and rear).

Electrical:

Ignition system, lighting, starting system, charging system, battery, instrumentation, body control module (BCM), wiring diagrams.

Fuel System:

Fuel tank, fuel pump, fuel injectors, fuel lines, throttle body, fuel system diagnostics.

Exhaust System:

Exhaust pipes, mufflers, catalytic converter (if applicable), exhaust system diagnostics.

Bodywork:

Fenders, fuel tank, seat, handlebars, controls, fairings (if equipped).

Maintenance:

Scheduled maintenance, oil changes, filter replacements, lubrication, brake fluid replacement, spark plug replacement, drive belt inspection/adjustment.

Troubleshooting:

Diagnostic procedures, fault code interpretation, common problem diagnosis and solutions for all major systems.

Repair:

Detailed step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation.

Diagnostics:

Engine diagnostics, electrical system diagnostics, fuel system diagnostics, using diagnostic tools (e.g., Harley-Davidson Digital Technician).

Special Tools:

Identification and usage of Harley-Davidson specific tools required for various repair and maintenance procedures.

Depth:

Comprehensive, covering routine maintenance to complete engine and transmission rebuilds.

Detail Level:

Includes torque specifications, clearances, tolerances, schematics, and diagrams for all procedures.

📊 Manual Specifications

PDF Quality:

High resolution, clear text and images, optimized for digital viewing and printing.

Searchability:

Typically text-searchable PDF, allowing users to quickly find specific topics.

Reproducibility:

Designed for clear printing of all pages, ensuring legibility for workshop use.

Binding For Print:

N/A (Digital Download - Print as needed)

Paper For Print:

N/A (Digital Download - Print on standard paper)

⚙️ Engine Specifications

Engine Family:

Harley-Davidson Twin Cam 96 (1584cc)

Engine Type:

Air-cooled, 45-degree V-twin, pushrod actuated overhead valves

Bore X Stroke:

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

Displacement:

96 cubic inches (1584 cc)

Horsepower Estimate:

Approx. 75-80 HP (Varies slightly by model and tuning)

Torque Estimate:

Approx. 90-95 ft-lbs @ 3000-3500 RPM (Varies slightly by model and tuning)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Ignition System:

Spark Ignition, High-output, Coil-over-plug

🔧 Transmission

Transmission Type:

6-speed Cruise Drive Transmission

Gear Ratios:

1st: 9.312, 2nd: 6.650, 3rd: 4.971, 4th: 3.850, 5th: 3.307, 6th: 2.790 (Approximate, check specific model for exact ratios)

Optional Transmission:

N/A (6-speed Cruise Drive was standard for the Twin Cam 96)

Clutch Type:

Clutched in transmission, Hydraulically actuated, multi-plate, wet clutch

Final Drive:

Carbon reinforced belt, 14mm pitch, 1.5" width

Transmission Fluid Spec:

Harley-Davidson Formula + Transmission/Primary Oil (or equivalent GL-4 75W-90, check manual for specifics)

📐 Dimensions

Wheelbase:

Approx. 64.25 - 64.75 inches (1632 - 1644.6 mm) depending on specific Dyna model

Length:

Approx. 90 - 92 inches (2286 - 2337 mm) depending on specific Dyna model

Seat Height:

Approx. 26 - 27 inches (660 - 686 mm) unladen, depending on specific Dyna model

Dry Weight:

Approx. 630 - 660 lbs (286 - 299 kg) depending on specific Dyna model

Gross Vehicle Weight Rating Gvwr:

Typically around 1000-1100 lbs (454-499 kg), check specific model

🛡️ Safety Features

Crash Test Ratings:

Motorcycles are not typically rated by NHTSA/IIHS in the same way as cars. Safety is assessed through design and component integrity.

Braking System:

Dual-piston caliper front brake with 292mm disc, Dual-piston caliper rear brake with 292mm disc. Anti-lock Braking System (ABS) was an optional feature on many 2008 Dyna models.

Lighting:

Halogen headlight, LED tail light, amber incandescent front and rear turn signals.

Frame Design:

Steel, rigid-mount, trike frame construction (for standard Dyna, not trike models) providing structural integrity.

💡 Technology Features

Instrumentation:

Analog speedometer, tachometer, fuel gauge, voltage meter, oil pressure gauge, and indicator lights. ABS indicator light if equipped.

Audio System:

Optional accessory audio systems were available, not standard on all 2008 Dynas.

ABS Availability:

Anti-lock Braking System (ABS) was an option for 2008 Dyna models. The manual will detail its operation and servicing.

Diagnostic Interface:

On-board diagnostics (OBD-II equivalent for motorcycles) accessible via Harley-Davidson Digital Technician (requires proprietary interface tool, covered in manual).

🔧 Maintenance

Initial Service:

First service typically at 1,000 miles (1600 km) - includes engine oil and filter change, primary chain tensioner check, all fasteners torque check.

Subsequent Service:

Subsequent services typically every 5,000 miles (8,000 km) or annually, whichever comes first.

Spark Plug Replacement:

Recommended every 10,000 - 15,000 miles (16,000 - 24,000 km), refer to manual for specific type and gap.

Drive Belt Tension:

Check and adjust belt tension at 2,500 mile intervals and as needed.

Engine Oil Type:

Harley-Davidson V-Twin 20W-50 or Syn3 (Synthetic) SAE 20W-50 engine oil. Consult manual for specific temperature range recommendations.

Engine Oil Capacity:

Approximately 4 quarts (3.8 liters) with filter change. Check dipstick before starting.

Primary Chain Case Oil Type:

Harley-Davidson Formula + Transmission/Primary Oil or suitable equivalent.

Primary Chain Case Oil Capacity:

Approx. 2.8 quarts (2.6 liters). Check level via sight glass.

Brake Fluid Type:

DOT 4 compatible fluid for hydraulic clutch and brake systems.

Common Wear Items:

Clutch plates, brake pads, tires, drive belt, wheel bearings.

Engine Specific Considerations:

Primary chain tensioner wear (especially early Twin Cam models), cam chain tensioner wear, potential for oil leaks from seals and gaskets.

Electrical Considerations:

Wiring harness integrity, regulator/rectifier issues, starter solenoid failures can occur with age.

📚 Vehicle History

Brand History:

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

Dyna Lineage:

The Dyna line, introduced in 1991, represented a more modern take on the classic Harley-Davidson cruiser, evolving from earlier FX series models with a focus on a more rigid chassis and the introduction of the Twin Cam engine.

2008 Updates:

The 2008 model year saw the widespread adoption of the Twin Cam 96 engine across the Dyna range and the availability of Electronic Sequential Port Fuel Injection (ESPFI).

Manufacturing Location:

Typically manufactured in Milwaukee, Wisconsin, USA.

🏆 Awards & Recognition

Model Awards:

The Harley-Davidson Dyna platform has consistently received acclaim for its styling and performance within the cruiser segment, though specific annual awards for the 2008 model year are not widely documented in a consolidated manner. Its reputation is built over years of consistent performance and iconic design.

Reliability Reputation:

Generally good reliability when properly maintained. Key to longevity is adherence to the service schedule and using correct fluids and parts, as detailed in this manual.

Emissions Compliance:

Meets EPA and CARB emissions standards for the year of manufacture. Manual will contain relevant specifications.