🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna Fat Bob

Model Code:

FXDF

Model Years Covered:

2008, 2009, 2010, 2011

Engine Code:

1584cc V-Twin (Twin Cam 96B)

👋 Introduction

Vehicle Segment:

Cruiser Motorcycle

Target Audience:

Riders seeking a powerful, stylish cruiser with a custom look and performance capabilities.

Key Competitors:

Other Harley-Davidson Dyna models, Indian Chief, Victory Hammer, select Japanese cruisers (e.g., Yamaha Raider, Kawasaki Vulcan).

Distinctive Styling:

Fat 240mm rear tire, dual front disc brakes, bobbed fenders, drag-style handlebar, exposed chrome front forks.

Engine Performance:

Torquey and reliable Twin Cam 96B engine providing strong acceleration and cruising power.

Customization Potential:

Harley-Davidson's extensive accessory catalog allows for significant personalization.

Manual Value Proposition:

Provides essential information for maintaining and repairing the FXDF, saving owners time and money on dealership services.

📋 Manual Details

Manual Type:

Workshop Service Repair Manual, Parts Catalog, Electrical Diagnostic Manual

Language:

English

Format:

Digital (Likely PDF, though not explicitly stated, common for workshop manuals)

Estimated Page Count:

500-700+ (typical for comprehensive workshop manuals including catalogs and diagnostics)

📖 Manual Coverage

Engine Mechanical:

Engine disassembly, assembly, inspection, overhaul, torque specifications, timing procedures, cylinder head, pistons, crankshaft, camshafts, oil pump, primary drive, clutch.

Fuel System:

Fuel injection system (EFI), throttle body, injectors, fuel pump, fuel filter, fuel tank, lines, pressure testing, diagnostics.

Ignition System:

Ignition coils, spark plugs, ignition module, sensors (crank position, cam position), timing adjustments, diagnostics.

Transmission And Drivetrain:

5-speed constant mesh transmission, clutch operation and adjustment, primary drive chain, final drive belt, torque specifications, disassembly and assembly.

Electrical System:

Wiring diagrams, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), battery, lighting (headlight, taillight, turn signals), instrumentation, switches, fuses, relays, diagnostic procedures for electrical faults.

Suspension And Steering:

Front forks (telescopic), rear shocks, fork oil change and seal replacement, steering head bearings, swingarm, wheel bearings, steering damper (if applicable).

Braking System:

Front and rear disc brakes, brake calipers, master cylinders, brake lines, brake fluid type and bleeding procedures, rotor inspection, pad replacement.

Chassis And Frame:

Frame inspection, mounting points, footpegs, handlebars, seat mounting, fenders, fuel tank installation.

Wheels And Tires:

Wheel balancing, tire inspection and replacement, rim specifications, spoke tension (if applicable).

Body And Trim:

Fenders, tank badges, side covers, seat removal and installation, handlebar controls, mirrors, exhaust system installation/removal.

Preventative Maintenance:

Scheduled maintenance, oil changes, filter replacements, lubrication points, drive belt adjustment and inspection, brake checks, tire pressure checks.

Troubleshooting:

Diagnostic flowcharts for common problems, symptom-based troubleshooting guides, electrical diagnostic procedures.

Repair And Overhaul:

Step-by-step instructions for component disassembly, repair, reassembly, and adjustment for all major vehicle systems.

Component Replacement:

Detailed guides for replacing parts such as brake pads, clutch plates, wheel bearings, fork seals, starter motor, and more.

Electrical Diagnostics:

Detailed wiring diagrams with component identification, voltage drop testing, continuity testing, signal tracing, use of diagnostic tools.

Depth Of Coverage:

Comprehensive from basic maintenance to complete engine and transmission rebuilds, including in-depth electrical diagnostics and troubleshooting.

📊 Manual Specifications

Digital Format:

Likely PDF (Searchable text and high-resolution images expected)

Image Resolution:

High-resolution for clear diagrams, schematics, and photographic examples.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 96B, 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:

8.9:1

Valve Train:

Pushrod-actuated, overhead valves with two valves per cylinder

Cooling System:

Air-cooled

Peak Horsepower:

Approx. 75-80 HP (at crankshaft, estimated)

Peak Torque:

Approx. 96 ft-lbs (at 3200 RPM, estimated)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium Unleaded Gasoline (91+ Octane)

Fuel Tank Capacity:

5.0 U.S. gal. (18.9 L)

🔧 Transmission

Transmission Type:

5-speed Manual

Primary Drive:

Duplex, chain, 1.250 in. wide, oil bath, compensator mechanism

Final Drive:

Belt, 14mm pitch, 1.125 in. wide

Clutch Type:

Clutched, nine plate-wet

Transmission Fluid Type:

Harley-Davidson Syn3 Full Synthetic Transmission Fluid or equivalent SAE 50 Premium Motorcycle Oil (check specific manual for exact recommendation)

📐 Dimensions

Length:

Approx. 92.1 in. (2339.3 mm)

Width:

Approx. 37.0 in. (939.8 mm) (handlebars)

Height:

Approx. 46.7 in. (1186.2 mm)

Wheelbase:

64.0 in. (1625.6 mm)

Ground Clearance:

4.7 in. (119.4 mm)

Dry Weight:

Approx. 632 lbs (286.7 kg)

Gross Vehicle Weight Rating Gvwr:

Approx. 1050 lbs (476.3 kg)

🛡️ Safety Features

Safety Ratings:

Motorcycles are not subject to federal crash test ratings in the same way as cars. Safety is dependent on rider skill and adherence to safe riding practices.

Braking System:

Dual front disc brakes, single rear disc brake, often with optional ABS (Anti-lock Braking System) depending on market and specific model configuration.

Lighting:

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

Frame Construction:

Steel frame and swingarm providing a robust chassis.

Rider Controls:

Handlebar-mounted controls, foot controls for shifting and braking.

💡 Technology Features

Instrumentation:

Analog speedometer with integrated digital tachometer, odometer, trip meter, and indicator lights. Some models may have a basic LCD display.

ABS:

Optional Anti-lock Braking System (ABS) was available on some models, enhancing braking safety.

Diagnostics:

On-board diagnostics (OBD-II) functionality for accessing engine fault codes via a diagnostic port (often under the seat or side cover), enabling sophisticated troubleshooting.

🔧 Maintenance

First Service:

Typically at 1,000 miles (1,600 km) or 12 months, whichever comes first. Includes engine oil and filter change, primary chain case oil change, inspection of all critical components.

Subsequent Services:

Generally every 5,000 miles (8,000 km) or 12 months for routine checks, oil changes, and filter replacements. More in-depth checks and adjustments may be required at higher mileage intervals (e.g., 10,000 miles, 20,000 miles).

Engine Oil Type:

Harley-Davidson 20W-50 Full Synthetic Motor Oil or equivalent motorcycle-specific oil meeting Harley-Davidson specifications.

Engine Oil Capacity:

Approx. 3.0 U.S. quarts (2.8 liters) with filter change.

Primary Chain Case Oil Type:

Harley-Davidson Primary Chaincase Lubricant or equivalent SAE 85W-140 gear oil.

Primary Chain Case Oil Capacity:

Approx. 32 U.S. fluid ounces (946 ml).

Brake Fluid Type:

DOT 4 specification brake fluid (typically for models without ABS). Consult manual for ABS models if equipped.

Common Wear Items:

Clutch plates, brake pads, tires, fork seals, drive belt (wear and potential premature replacement if misaligned or damaged).

Electrical Gremlins:

Intermittent issues with sensors, switches, or wiring can occur with age and vibration. Comprehensive electrical diagnostics are crucial.

Engine Vibration:

While the Dyna platform has isolation, some vibration is inherent to the V-twin design. Excessive vibration may indicate an issue with mounting or engine components.

Fuel Line Issues:

Early models sometimes had issues with fuel line degradation or leaks; regular inspection is recommended.

📚 Vehicle History

Heritage:

Harley-Davidson is an iconic American motorcycle manufacturer with a legacy dating back to 1903, known for its V-twin engines and cruiser styling.

Dyna Platform:

The Dyna platform, introduced in 1991, was characterized by its rubber-isolated engine mounting, offering a balance between classic Harley feel and improved comfort. The FXDF Fat Bob was a popular model within this platform, introduced in 2007.

Production Period:

The FXDF Fat Bob was produced from 2007 to 2017. This manual specifically covers the 2008-2011 model years, which fall within the early production run of the model.

🏆 Awards & Recognition

Model Recognition:

The Harley-Davidson Fat Bob is consistently praised for its aggressive styling, powerful V-twin engine, and custom cruiser appeal. It has been a popular choice among riders seeking a distinctive look and feel.

Motorcycle Press Reviews:

Frequently featured and positively reviewed in motorcycle publications for its performance and customization potential.

Emission Standards:

Manufactured to meet U.S. EPA and California ARB emission standards for the respective model years.