Segment:
Cruiser Motorcycle
Target Audience:
Riders seeking classic styling, customization potential, and the Harley-Davidson experience.
Competitors 2006:
Yamaha V-Star series, Honda Shadow series, Kawasaki Vulcan series, Indian Chief.
Engine Platform:
Evolution Engine, a hallmark of Harley-Davidson's Sportster line for decades.
Customization:
Renowned for its vast aftermarket support and customization potential.
Brand Legacy:
Harley-Davidson's long-standing heritage of V-twin motorcycles, offering distinctive sound, feel, and style.
Engine:
1200cc Evolution V-Twin (Air-cooled), Carbureted and Fuel Injection variants (specific to 2006 model year)
Transmission:
5-speed constant mesh, clutch, drive chain, primary drive system
Fuel System:
Carburetor (Keihin CV type) or Electronic Fuel Injection (EFI) systems, fuel pump, fuel lines, fuel tank service
Electrical System:
Ignition system, lighting, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), battery, wiring diagrams, ECM/ECU diagnosis
Suspension:
Front forks (telescopic, cartridge/emulsion), rear shock absorbers (twin, adjustable/non-adjustable), fork seals, fork oil replacement, rear shock mounting and adjustment
Brakes:
Front and rear disc brakes, hydraulic system, brake fluid specifications, caliper service, master cylinder overhaul, brake pad replacement, bleeding procedures
Chassis And Frame:
Frame inspection, steering head bearing service, swingarm and pivot bearings, wheel bearings, chassis alignment
Bodywork And Trim:
Fenders, fuel tank, seat, handlebars, controls, fairings (if applicable), mounting hardware
Exhaust System:
Exhaust pipes, mufflers, mounting hardware, gasket replacement
Maintenance:
Scheduled maintenance, oil changes, filter replacements (oil, air), spark plug replacement, lubrication points, chain adjustment and lubrication, brake fluid flush
Repair:
Engine rebuilds (top-end and bottom-end), transmission overhaul, clutch replacement, fork seal replacement, brake caliper rebuild, starter motor repair, carburetor/EFI tuning and repair
Diagnostics:
Troubleshooting guides for common issues, diagnostic trouble codes (DTCs) for EFI models, electrical system diagnostics, performance tuning advice
Specifications:
Torque values for critical fasteners, engine clearances, fluid capacities, electrical component specifications, performance data
Wiring Diagrams:
Detailed, color-coded wiring schematics for all electrical systems
Depth:
Comprehensive, suitable for professional technicians and experienced DIY mechanics. Covers everything from basic checks to complete engine and transmission overhauls.
Engine Type:
Air-cooled, 45-degree V-twin, Evolution engine
Displacement:
1200cc (73.7 cubic inches)
Bore X Stroke:
3.496 in. x 4.000 in. (88.8 mm x 101.6 mm)
Compression Ratio:
9.0:1 (typical for 2006 XLH 1200)
Valvetrain:
OHV (Overhead Valve), 2 valves per cylinder, operated by pushrods and rocker arms
Ignition System:
Electronic Ignition (Distributorless for some models, SE ignition for others)
Horsepower:
Approx. 65-70 HP (varies slightly by model and tuning)
Torque:
Approx. 70-75 lb-ft @ 3500 RPM (varies slightly by model and tuning)
Carburetor Type:
Keihin CV (Constant Velocity) 40mm
Fuel Injection Type:
Single-port, throttle body EFI (if applicable to specific 2006 XLH variant)
Oil Type:
Harley-Davidson 20W50 V-Twin Oil or equivalent API SG/SH/SJ/SL rated motorcycle oil
Oil Capacity:
3.0 US quarts (2.8 liters) without filter change, 3.5 US quarts (3.3 liters) with filter change
Oil Filter Part Number:
Harley-Davidson 63796-77A (or equivalent aftermarket)
Transmission Type:
5-speed, constant mesh, manual gearbox
Primary Drive:
Chain, 34/49 tooth (typical)
Secondary Drive:
Belt drive, 32/65 tooth (typical)
Clutch Type:
Multi-plate, wet clutch, cable-actuated
Transmission Fluid Type:
Harley-Davidson primary chaincase lubricant or equivalent Harley-Davidson transmission oil
Transmission Fluid Capacity:
Approx. 1.0 US quart (0.95 liters)
Crash Safety Ratings:
N/A (Motorcycle safety is assessed differently than automobiles, focus on rider safety features and design)
Braking System:
Dual-disc front braking, single-disc rear braking (hydraulic)
Lighting:
Halogen headlight, LED taillight, incandescent turn signals
Frame Construction:
Steel frame designed for stability and handling
Oil Change Interval:
Every 2,500-5,000 miles or 6 months, whichever comes first (consult manual for specifics)
Primary Chain Adjustment:
Every 2,500-5,000 miles
Spark Plug Replacement:
Every 7,500-10,000 miles (depending on plug type)
Brake Fluid Flush:
Every 12-24 months or as needed based on condition
Front Fork Oil:
Harley-Davidson Type HD 20W or equivalent motorcycle fork oil
Front Fork Oil Capacity:
Approx. 10.0 US fl oz (296 ml) per fork leg (check manual for exact specification)
Cam Chain Tensioners:
Early Evolution engines (prior to 2007) had cam chain tensioner pads that could wear. 2006 is on the cusp, manual will guide inspection.
Carburetor Tuning:
CV carburetor may require occasional adjustment for optimal performance and idle.
Starter Solenoid:
Solenoid can sometimes fail, leading to starting issues.
Founding:
Founded in 1903 by William S. Harley and Arthur Davidson.
Iconic Models:
Electra Glide, Fat Boy, V-Rod, Sportster
Sportster Introduction:
The Sportster line was introduced in 1957.
Evolution Engine Debut:
The Evolution engine debuted in 1984.
2006 Updates:
2006 saw the continued refinement of the Evolution engine Sportster, with potential minor styling and component updates over earlier years.
Manufacturing Location:
Milwaukee, Wisconsin, USA (primarily)