🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLSTN Softail Deluxe

Year:

2006

👋 Introduction

Target Audience:

Owners and independent repair shops of the 2006 Harley-Davidson FLSTN Softail Deluxe seeking factory-accurate repair information.

Value Proposition:

Provides the same official factory procedures and specifications as dealership technicians, crucial for accurate maintenance and repair.

Completeness:

Extensive coverage with hundreds of pages, ensuring no critical repair or maintenance procedure is omitted.

Print Flexibility:

Ability to print only necessary pages, enhancing usability and reducing paper waste.

📋 Manual Details

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

Printable Document (likely PDF)

📖 Manual Coverage

Engine Mechanics:

Complete engine overhaul, disassembly, assembly, tuning, and diagnostics for Twin Cam 88B engine.

Fuel System:

Fuel injection (EFI) system diagnosis, cleaning, component testing, and calibration.

Ignition System:

Ignition system component testing, troubleshooting, and replacement.

Transmission Drivetrain:

5-speed Cruise Drive transmission overhaul, clutch service, belt drive maintenance, and primary drive inspection.

Electrical System:

Full electrical schematic diagrams, lighting, charging system, starting system, battery, and accessory wiring.

Suspension Steering:

Front fork assembly, rear shock absorber service, wheel bearings, and steering head bearing maintenance.

Braking System:

Front and rear brake system service, hydraulic fluid replacement, pad and rotor inspection, and caliper overhaul.

Chassis Frame:

Frame inspection, torque specifications, and general chassis component tightening.

Bodywork Trim:

Fender removal/installation, fuel tank mounting, seat service, and accessory installation guidance.

Routine Maintenance:

Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, and lubrication points.

Troubleshooting Diagnostics:

Systematic diagnostic procedures for common performance issues, electrical faults, and mechanical problems.

Major Repairs:

Detailed steps for engine rebuilds, transmission overhauls, and suspension component replacement.

Component Testing:

Methods for testing electrical components, sensors, and mechanical systems.

Tightening Torques:

Comprehensive list of torque specifications for critical fasteners across all systems.

Depth Level:

Comprehensive factory-level service and repair, suitable for professional technicians and advanced DIYers.

📊 Manual Specifications

Digital Format:

PDF (Portable Document Format)

Printability:

Designed for full printing, allowing users to print individual sections or the entire manual.

Binding Suggestion:

Professional binding recommended for printed copies for durability.

Paper Recommendation:

Standard printing paper; heavier stock recommended for frequently referenced pages.

⚙️ Engine Specifications

Engine Type:

Harley-Davidson Twin Cam 88B (Fuel Injected)

Displacement:

1450cc (88 cubic inches)

Configuration:

Air-cooled, 45-degree V-twin

Bore X Stroke:

3.75 in x 4.00 in (95.25 mm x 101.6 mm)

Compression Ratio:

8.9:1 (Typical)

Valve Train:

Overhead valves (OHV) with pushrods, 2 valves per cylinder

Horsepower:

Approximately 65-70 HP (estimated, varies with exhaust and tuning)

Torque:

Approximately 75-80 lb-ft (estimated, varies with exhaust and tuning)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Unleaded gasoline, minimum 91 octane (Research Octane Number)

Engine Oil Capacity:

3.0 US quarts (2.8 liters) with filter change

Engine Oil Type:

Harley-Davidson SYN3 (20W50) or equivalent API CI-4 rated synthetic motorcycle oil.

🔧 Transmission

Transmission Type:

5-speed Cruise Drive Manual Transmission

Optional Transmissions:

N/A for this model year and trim

Gear Ratios:

Detailed in manual, typically includes: 1st: 9.311, 2nd: 6.449, 3rd: 4.759, 4th: 3.875, 5th: 3.296

Primary Drive:

Compensating sprocket, chain, clutch, and oil bath primary cover

Final Drive:

Belt drive (72T rear pulley, 32T front pulley, 131-tooth belt)

Transmission Oil Capacity:

2.5 US quarts (2.4 liters)

Transmission Oil Type:

Harley-Davidson Formula + (GL-4 rated) or equivalent SAE 50 gear oil.

📐 Dimensions

Wheelbase:

64.5 inches (1638 mm)

Length:

92.4 inches (2347 mm)

Seat Height Unladen:

26.5 inches (673 mm)

Ground Clearance:

5.1 inches (130 mm)

Dry Weight:

674 lbs (306 kg)

Gross Vehicle Weight Rating Gvwr:

1050 lbs (476 kg)

Fuel Capacity:

5.0 US gallons (18.9 L)

Front Wheel:

16-inch wire-spoke

Rear Wheel:

15-inch wire-spoke

Front Tire Size:

MT90B16 72H

Rear Tire Size:

150/80B16 77H

🛡️ Safety Features

Safety Ratings:

Motorcycles of this era are not subject to automotive crash test ratings. Safety is primarily through rider skill and active safety features.

Braking System:

Dual-action, front and rear disc brakes with hydraulic actuation. Braided stainless steel lines are common for improved feel.

Lighting:

Halogen headlight, LED tail/stop lamp, amber front and rear turn signals.

Frame Construction:

Steel cradle frame providing structural integrity.

Ride Control Features:

None (no ABS or traction control offered as standard or optional on this model)

💡 Technology Features

Audio System:

Optional factory-installed radio with AM/FM, weather band, and CD player. Speakers typically integrated into fairing or saddlebags.

Instrumentation:

Analog speedometer, tachometer, fuel gauge, and oil pressure indicator. Various indicator lamps for turn signals, high beam, neutral, etc.

ABS:

Anti-lock Braking System (ABS) was not a standard or widely available option on the 2006 FLSTN Softail Deluxe.

Connectivity Features:

None (no Bluetooth, USB, or smartphone integration).

🔧 Maintenance

Initial Service:

1000 miles (1600 km) or 6 months

Subsequent Service:

Every 5000 miles (8000 km) or 12 months thereafter (engine oil, primary and transmission fluids may have different intervals as per manual).

Belt Tension Check:

Recommended at every service interval, or more frequently if noise is present.

Brake Fluid Flush:

Recommended every 2 years, regardless of mileage.

Primary Oil Type:

Harley-Davidson Formula + (GL-4 rated) or equivalent SAE 50 gear oil.

Fork Oil Type:

Harley-Davidson Suspension Fluid (or equivalent SAE 15W fork oil)

Primary Oil Capacity:

1 quart (0.95 liters)

Cam Chain Tensioners:

Early Twin Cam engines (pre-2007) are known for wear on the cam chain tensioners, potentially leading to noise and damage. This manual will detail inspection and replacement procedures.

Crankshaft Position Sensor:

While less common on the 88B, potential issues with the crank position sensor can affect ignition timing and engine performance.

Regulator Rectifier:

Some Harley-Davidson models of this era experienced premature failure of the regulator/rectifier, impacting battery charging. The manual will guide diagnosis.

📚 Vehicle History

Brand Legacy:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer known for its V-twin engines, distinctive styling, and cruiser/touring motorcycles.

Softail Lineage:

The Softail platform, introduced in the early 1980s, features a concealed rear suspension to mimic the look of a rigid 'hardtail' frame, providing a smoother ride.

Flstn Development:

The FLSTN Softail Deluxe model was introduced to offer a retro-styled cruiser, paying homage to the classic lines of 1940s Harley-Davidsons, with abundant chrome and a low-slung profile.

Model Production Years:

The FLSTN Softail Deluxe was produced with various iterations from the early 1990s through the late 2000s, with the 2006 model being a representative example of its classic styling.

🏆 Awards & Recognition

Model Awards:

While specific awards for the 2006 FLSTN are not widely publicized, the Softail platform and Harley-Davidson brand are consistently recognized for their iconic styling, rider experience, and market segment leadership.

Reliability Ratings:

Reliability is generally considered good with proper maintenance. The manual is key to addressing potential wear items.