🏷️ Basic Information

Make:

Harley-Davidson

Model:

FXDB Dyna Street Bob

Year:

2008

Model Code:

FXDB

Engine Family Code:

Dyna

👋 Introduction

Category:

Cruiser Motorcycle

Target Audience:

Riders seeking a stripped-down, customizable cruiser with a focus on raw riding experience. Known for its minimalist aesthetic and bobber-inspired styling.

Competitors:

Other cruisers in its class, including models from Indian Motorcycle, and potentially some Japanese manufacturers in the cruiser segment, though the Street Bob occupies a distinct niche.

Styling:

Bobber styling with a solo seat, mini-ape handlebars, chopped fenders, and a minimalist instrument cluster.

Engine:

Harley-Davidson's Twin Cam 96 V-twin engine, known for its torque and distinctive sound.

Customization:

Designed as a platform for extensive customization, appealing to riders who modify their bikes.

📋 Manual Details

Primary Coverage:

Mechanical, Electrical, Bodywork, Chassis, Troubleshooting, Maintenance, Repair

Total Pages:

1033

Type:

Workshop Service Manual

Language:

English

Format:

PDF (Digital Download)

📖 Manual Coverage

Engine:

Detailed disassembly, assembly, diagnosis, and repair of the Twin Cam 96 engine, including fuel injection (EFI), ignition, lubrication, and cooling systems.

Transmission:

Covered extensively, including clutch operation, gearbox disassembly, inspection, assembly, and maintenance of the 6-speed Cruise Drive transmission.

Chassis:

Includes frame, front and rear suspension (forks, shocks), steering system, wheels, and bearings.

Brakes:

Comprehensive coverage of front and rear brake systems, including hydraulic circuits, caliper maintenance, pad replacement, and bleeding procedures.

Electrical:

Detailed schematics, component testing, diagnostic procedures for ignition, lighting, starting, charging systems, battery, and accessories.

Fuel System:

In-depth information on the Electronic Fuel Injection (EFI) system, fuel pump, injectors, and throttle body.

Exhaust System:

Information on exhaust components and potential modifications, though detailed performance tuning might be limited to factory specifications.

Bodywork:

Includes fenders, fuel tank, seat, handlebars, and other cosmetic components, with procedures for removal and installation.

Maintenance:

Routine maintenance tasks such as oil changes, filter replacements, spark plug servicing, chain adjustment (if applicable, though belt drive is standard on Dyna), and fluid checks.

Troubleshooting:

Extensive diagnostic flowcharts and procedures for identifying and resolving common mechanical and electrical issues.

Repair:

Detailed step-by-step repair instructions for all major components and systems, including engine rebuilds and transmission overhauls.

Diagnostics:

Guidance on using diagnostic tools (like Harley-Davidson's Digital Technician) and interpreting fault codes.

Wiring Diagrams:

Complete electrical wiring diagrams for accurate troubleshooting and component replacement.

Special Tools:

Likely details required Harley-Davidson special tools for specific procedures (e.g., engine work, suspension adjustments), which is crucial for accurate repairs.

Depth:

Comprehensive, covering everything from basic adjustments and fluid changes to complete engine and transmission rebuilds, electrical system diagnostics, and chassis overhauls. Suitable for professional technicians and experienced DIY mechanics.

📊 Manual Specifications

File Type:

PDF

Searchable:

Yes (typically, depending on PDF source)

Printability:

Printable (suitable for home or professional printing)

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

Model Variants Covered:

Harley-Davidson FXDB Dyna Street Bob (2008)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 96 V-twin

Displacement:

1584 cc (96 cubic inches)

Bore X Stroke:

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

Compression Ratio:

8.8:1

Valvetrain:

Pushrod-actuated overhead valves with hydraulic lifters, 2 valves per cylinder

Torque Spec Ft Lbs:

92.6 ft-lbs @ 3000 RPM (approximate, may vary slightly with exhaust/tuning)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium unleaded gasoline, minimum 91 octane

Oil Type:

Harley-Davidson Genuine V-Twin 20W-50 Synthetic Motorcycle Oil or equivalent

Oil Capacity W Filter:

3.5 US quarts (3.3 liters)

🔧 Transmission

Transmission Type:

6-speed Cruise Drive

Optional Transmissions:

N/A (Standard for this model)

Clutch Type:

Cable-actuated, 9-plate, wet clutch

Final Drive:

Carbon fiber belt, 32/66 ratio

Transmission Oil Type:

Harley-Davidson Genuine Formula Plus or equivalent (e.g., Spectro Primary Chain Lubricant, SAE 50)

Transmission Oil Capacity:

2.8 US quarts (2.6 liters)

📐 Dimensions

Length:

91.5 in (2324 mm)

Width:

32.1 in (815 mm)

Height:

46.7 in (1186 mm)

Seat Height Laden:

25.8 in (655 mm)

Ground Clearance:

4.3 in (109 mm)

Dry Weight:

632 lbs (287 kg)

Wet Weight:

662 lbs (300 kg) (approximate, with all fluids)

Gross Vehicle Weight Rating:

1050 lbs (476 kg)

Wheelbase:

63.7 in (1618 mm)

🛡️ Safety Features

Safety Features:

ABS (Anti-lock Braking System) was an optional feature for 2008 models. Check specific vehicle for fitment.

Braking System:

Dual-action, front hydraulic disc brake; rear hydraulic disc brake. ABS available as an option.

Lighting:

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

Frame Construction:

Steel, 2-into-1 frame design.

💡 Technology Features

Instrumentation:

Minimalist console with speedometer, odometer, trip meter, and indicator lights. Tachometer typically not standard, often an add-on accessory.

ABS:

Optional, not standard equipment for all 2008 models.

Connectivity Features:

None standard. Primarily mechanical and electrical systems, designed for a classic riding experience.

🔧 Maintenance

First Service:

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

Subsequent Services:

Every 5,000 miles (8,000 km) or 12 months. Includes engine oil and filter change, primary chain case inspection, spark plug inspection/replacement, brake inspection, and chassis lubrication.

Engine Oil Viscosity:

20W-50

Brake Fluid Type:

DOT 4

Primary Chain Case Oil:

Harley-Davidson Genuine Formula Plus or equivalent SAE 50

Common Issues 2008 Dynas:

Potential for primary drive chain tensioner wear, charging system issues (stator/regulator), and early model Twin Cam 96 oil pressure issues (addressed with service bulletins). Clutch lever adjustment and cable maintenance are routine. Fuel injector servicing may be needed over time. Brake pad wear is normal for all motorcycles.

📚 Vehicle History

Brand Origin:

Harley-Davidson Motor Company, founded in 1903, Milwaukee, Wisconsin, USA.

Dyna Lineage:

The Dyna line, introduced in 1991, replaced the FXR chassis and was known for its blend of classic styling and modern performance. The Street Bob (FXDB) was introduced as a model within the Dyna family, offering a more minimalist, custom-oriented package.

2008 Updates:

For 2008, key updates included the introduction of the Twin Cam 96 engine across the Dyna range, the 6-speed Cruise Drive transmission, and standard disc brakes. ABS became an option for some models, including the Street Bob.

Manufacturing Location:

United States

🏆 Awards & Recognition

Industry Standing:

The Dyna platform, and the Street Bob in particular, has consistently been praised for its blend of iconic Harley-Davidson styling, accessible ergonomics, and strong customization potential. It's often regarded as a good entry point into Harley-Davidson ownership for riders seeking a more 'custom' look out of the box.