🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna FX Models

Year:

2008

Chassis Code:

FXD, FXDB, FXDC, FXDF, FXDWG

Product Code:

Likely a 99482-08 (Harley-Davidson Part Number for official manual, though this is a third-party offering)

👋 Introduction

Segment:

Cruiser Motorcycle

Target Audience:

Harley-Davidson Dyna owners, independent repair shops, enthusiasts performing DIY maintenance and repairs

Value Proposition:

Provides comprehensive factory-level technical data and procedures, crucial for maintaining and repairing these performance motorcycles accurately.

Essential Documentation:

Indispensable for any owner or technician working on the 2008 Harley-Davidson Dyna FX models.

Download Convenience:

Instant digital access for immediate use.

📋 Manual Details

Geographical Coverage:

Global (standard for Harley-Davidson service information)

Language:

English

Estimated Page Count:

600-800 (Typical for a comprehensive service manual of this era)

Type:

Service Repair Workshop Manual

Format:

Downloadable PDF

File Quality:

High Resolution (Assumed for clarity and usability)

Searchable Text:

Yes (Standard for digital service manuals)

📖 Manual Coverage

Engine:

Engine assembly, disassembly, internal components, lubrication system, cooling system (air-cooled), fuel injection system (EFI), ignition system, exhaust system

Transmission:

Transmission assembly, disassembly, clutch, gearbox, final drive (belt drive)

Chassis And Frame:

Frame construction, front forks, steering assembly, rear suspension (shocks), swingarm

Electrical:

Wiring diagrams, battery, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), lighting system, instrument cluster, ignition switch, security system (if equipped)

Brakes:

Front and rear brake systems (hydraulic disc brakes), brake calipers, master cylinders, brake lines, brake fluid specifications

Wheels And Tires:

Wheel specifications, tire types, tire pressures, wheel bearing maintenance, wheel removal/installation

Bodywork And Trim:

Fuel tank, fenders, seat assembly, handlebar, mirrors, foot controls, chrome/trim components

Maintenance:

Scheduled maintenance tasks, oil changes, filter replacements, spark plug replacement, brake fluid flush, drive belt inspection and adjustment

Troubleshooting:

Diagnostic procedures for common issues, fault codes (if applicable to EFI system), symptom-based troubleshooting guides

Repair:

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

Specifications:

Torque specifications, clearances, tolerances, fluid capacities, electrical specifications

Special Tools:

Listing and usage of specialized tools required for specific procedures

Depth:

Comprehensive (covering from basic maintenance to full engine and transmission rebuilds)

Diagnostic Level:

Advanced (includes EFI diagnostics and wiring troubleshooting)

📊 Manual Specifications

Type:

PDF

Compatibility:

Compatible with all PDF readers on PC, Mac, tablets, and smartphones

Quality:

Printable (allows for physical copies)

Type:

N/A (Digital Download)

Type:

N/A (Digital Download)

Usage Rights:

Unlimited access, no expiry dates (as stated in product description)

⚙️ Engine Specifications

Engine Family:

Twin Cam 96

Engine Type:

Air-cooled, 45-degree V-twin

Displacement:

1584 cc (96 cubic inches)

Bore X Stroke:

3.75 in. x 4.496 in. (95.25 mm x 114.3 mm)

Compression Ratio:

8.9:1

Valve Train:

Overhead valves (OHV), 2 valves per cylinder, pushrod actuated

Fueling:

Electronic Sequential Port Fuel Injection (ESPFI)

Ignition:

High-performance electronic ignition

Horsepower:

Approx. 70-75 HP (at crankshaft, varies by model and tuning)

Torque:

Approx. 90-95 lb-ft (at crankshaft, varies by model and tuning)

Fuel Type:

91 octane (or higher) unleaded gasoline

Oil Type And Capacity:

Check manual for specific API SG, J1861 certified, or Harley-Davidson recommended oil. Capacity typically around 3.5 quarts (3.3 Liters) with filter change.

🔧 Transmission

Type:

6-speed Cruise Drive Transmission

Type:

N/A (6-speed was standard for these models)

Clutch:

Hydraulic, multi-plate wet clutch

Final Drive:

Carbon fiber reinforced belt, 140 tooth, 1.125" width

Transmission Oil Type:

Check manual for specific Harley-Davidson Formula+ or approved equivalent.

📐 Dimensions

Length:

Varies by FX model (e.g., FXDWG typically longer)

Wheelbase:

Varies by FX model (e.g., FXDWG ~66.7 in., FXD/FXDB/FXDC ~64.5 in.)

Seat Height:

Varies by FX model (e.g., typically 26-28 inches unladen)

Dry Weight:

Varies by FX model (e.g., FXD/FXDB around 630 lbs, FXDWG around 645 lbs)

Gross Vehicle Weight Rating Gvwr:

Consult specific model's owner's manual or VIN plate. Typically around 1000-1100 lbs.

Fuel Capacity:

Varies by FX model (e.g., 4.9 US gallons / 18.5 Liters)

Front Tire Size:

Commonly 100/90-19 or similar

Rear Tire Size:

Commonly 150/80-16 or similar

Wheel Bolt Pattern:

N/A (Harley-Davidson uses bolt-on hubs)

🛡️ Safety Features

Crash Test Results:

N/A (Motorcycles are not typically subjected to standardized automotive crash testing like cars)

Braking System:

Dual-piston front caliper, single-piston rear caliper hydraulic disc brakes

Lighting:

Halogen headlamp, LED tail/brake light, incandescent turn signals

Frame Construction:

Steel frame and swingarm designed for stability and handling

Security System:

Optional H-D Smart Security System with hands-free fob

💡 Technology Features

System:

Basic instrumentation with speedometer, tachometer (on some models), odometer, trip odometer, and indicator lights. No factory-installed infotainment/audio systems on standard Dyna models.

Features:

N/A (No electronic rider aids like ABS or traction control were standard on most 2008 Dyna models, though some aftermarket options might exist).

Features:

N/A (No native Bluetooth or smartphone connectivity)

🔧 Maintenance

Initial Service:

1000 miles (1600 km) or 6 months, whichever comes first (typically includes oil change, filter, primary chain tensioner inspection, and general inspection).

Subsequent Oil Change:

Every 5000 miles (8000 km) or 12 months, whichever comes first.

Drive Belt Tension Check:

Every 5000 miles (8000 km).

Spark Plug Replacement:

Refer to manual, typically around 10,000-15,000 miles.

Engine Oil:

API SG, J1861 certified, SAE 20W50 (Harley-Davidson recommends their own proprietary blends or equivalent).

Primary Chain Case Oil:

Harley-Davidson Formula+ or equivalent transmission lubricant.

Transmission Oil:

Harley-Davidson Formula+ or equivalent transmission lubricant.

Brake Fluid:

DOT 4 specification.

Primary Chain Tensioner:

Early Twin Cam models (including some 2008) could experience wear on the hydraulic tensioner shoes, leading to noise or potential failure. Later models had updated components.

Cam Chain Tensioners:

Similar concern as primary chain tensioner for the cam chain tensioners within the engine cases, though less frequent on Twin Cam 96 compared to earlier Twin Cams.

Starter Clutch:

Some reports of starter clutch wear or failure on higher mileage bikes.

Rear Brake Pads:

Can wear relatively quickly depending on riding style and conditions.

📚 Vehicle History

Legacy:

Harley-Davidson is an iconic American motorcycle manufacturer with a rich history dating back to 1903.

Dyna Lineage:

The Dyna line, introduced in 1991, was known for its blend of classic styling with modern V-twin performance. The FX chassis served as the basis for various Dyna models.

2008 Updates:

The 2008 models featured the Twin Cam 96 engine and the 6-speed Cruise Drive transmission as standard across the Dyna range, offering improved performance and cruising comfort.

Manufacturing Location:

United States (primarily York, Pennsylvania and Milwaukee, Wisconsin)

🏆 Awards & Recognition

Brand Awards:

Harley-Davidson consistently recognized for its brand heritage, iconic styling, and American manufacturing.

Model Reputation:

The Dyna line is highly regarded by its owners for its raw V-twin character, handling, and customization potential.