Market Position:
Essential resource for Harley-Davidson Sportster owners and independent repair shops seeking professional-level service information.
Competitive Advantage:
Provides the same level of detail as dealership-level service manuals, empowering users to perform a wide range of maintenance and repairs.
Key Features:
Authoritative, detailed, and comprehensive coverage for the 2006 Harley-Davidson XLH Sportster models.
Engine Mechanical:
Engine overhaul, disassembly, assembly, inspection, tuning, timing, cooling system, lubrication system
Fuel System:
Carburetor (CV or EFI dependent on specific XLH variant) service, fuel pump, fuel lines, fuel tank maintenance
Ignition System:
Ignition system components, timing, troubleshooting, spark plugs
Transmission:
Clutch, gearbox disassembly, assembly, inspection, maintenance, lubrication
Drivetrain:
Belt drive system, primary drive, final drive maintenance and inspection
Brakes:
Hydraulic brake system, front and rear brake caliper service, master cylinder, brake lines, bleeding procedures
Suspension:
Front fork service (oil change, seal replacement), rear shock absorber maintenance and replacement
Electrical System:
Wiring diagrams, lighting, starter motor, charging system (stator, regulator/rectifier), battery maintenance, fuses, relays
Chassis And Body:
Frame inspection, bodywork disassembly and reassembly, fenders, fuel tank, seat, handlebars, controls
Wheels And Tires:
Wheel bearing service, tire inspection and replacement, spoke tension adjustment (if applicable)
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, chain/belt adjustment, lubrication points
Troubleshooting:
Diagnostic procedures for common problems, fault code interpretation (if EFI)
Repair Procedures:
Step-by-step instructions for component removal, disassembly, repair, and reassembly
Diagnostic Charts:
Flowcharts and tables for diagnosing electrical and mechanical issues
Depth:
Comprehensive from basic rider maintenance to full engine and transmission rebuilds, including electrical diagnostics.
Engine Type:
Evolution V-Twin, Air-Cooled
Displacement:
88 cubic inches (1449 cc) - typical for 2006 XLH models, though variations may exist
Bore X Stroke:
3.56 in. x 4.47 in. (90.4 mm x 113.6 mm)
Compression Ratio:
9.0:1 (typical)
Horsepower:
Approx. 70-75 HP (varies by specific model and tuning)
Torque:
Approx. 78-82 ft-lbs (varies by specific model and tuning)
Fuel Delivery:
Carburetor (e.g., Keihin CV) or Electronic Fuel Injection (EFI) depending on specific XLH variant.
Fuel Type:
Unleaded Gasoline, 87-91 Octane
Length:
Approx. 88.5 in. (2248 mm)
Width:
Approx. 35.0 in. (889 mm)
Height:
Approx. 47.0 in. (1194 mm)
Dry Weight:
Approx. 545 lbs (247 kg)
Gross Vehicle Weight Rating:
Approx. 960 lbs (435 kg)
Fuel Capacity:
3.0 gal (11.4 L) or 4.5 gal (17.0 L) depending on fuel tank style.
Oil Capacity:
3.0 US qt (2.8 L)
Safety Ratings:
Motorcycle safety is primarily determined by rider skill and adherence to traffic laws. Specific crash test ratings are not typically provided for motorcycles in the same manner as passenger vehicles.
Active Safety Features:
Dual-piston front brake caliper, rear drum brake (on some models) or disc brake, robust frame design.
Passive Safety Features:
Steel frame construction, rider ergonomics designed for control.
Initial Service:
1000 miles (1600 km) or 6 months, whichever comes first (includes engine oil and filter change, primary chain case lubrication, inspection of critical components).
Subsequent Service:
Every 5000 miles (8000 km) or 12 months, whichever comes first (includes engine oil and filter change, primary chain case lubrication, inspection of brakes, tires, belts, and other systems).
Spark Plug Replacement:
Every 10,000 miles (16,000 km) or 12 months.
Fork Oil Change:
Recommended every 20,000 miles (32,000 km) or as needed based on performance.
Engine Oil:
Harley-Davidson 20W-50 SYN3 or equivalent motorcycle-specific oil.
Primary Chain Case Oil:
Harley-Davidson primary fluid or SAE 85W-140 gear oil.
Brake Fluid:
DOT 4 or DOT 5.1 fluid (refer to manual for exact specification and color coding to avoid mixing).
Known Issues:
Potential for oil leaks from primary and engine seals, clutch adjustment requirements, carburetor tuning needs, potential charging system issues (regulator/rectifier).
Brand Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser-style motorcycles.
Model Evolution:
The Sportster line, introduced in 1957, is one of Harley-Davidson's longest-running models, evolving from a sporty performance bike to a versatile cruiser. The XLH designation typically refers to models with the larger Evolution engine.
Production Years:
The Evolution engine was introduced in 1986 for Sportster models. The 2006 model year falls within this generation.
