Manual Coverage
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Systems Covered
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Engine Mechanical:
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Detailed disassembly, assembly, inspection, and repair of the Twin Cam 96 engine (1584cc), including cylinders, pistons, crankshaft, camshafts, valvetrain, and oil pump.
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Fuel System:
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Covers fuel injection system (EFI), fuel pump, fuel filter, fuel lines, and diagnostics for fuel delivery issues.
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Ignition System:
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Details ignition module, spark plugs, ignition coils, and troubleshooting ignition system faults.
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Transmission:
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Covers the 6-speed Cruise Drive transmission, including disassembly, assembly, clutch operation, gear inspection, and fluid service.
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Electrical System:
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Comprehensive coverage of the entire electrical system, including wiring diagrams, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), battery maintenance, lighting, gauges, and accessory wiring.
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Braking System:
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Detailed procedures for front and rear brake systems, including caliper service, master cylinder overhaul, brake lines, brake fluid replacement, and bleeding procedures.
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Suspension And Steering:
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Covers front fork assembly (including internal components and oil changes), rear shock absorbers, and steering head bearing service.
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Frame And Bodywork:
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Procedures for frame inspection, body panel removal and installation, fairing components, seat, fenders, and fuel tank.
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Wheels And Tires:
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Information on wheel removal and installation, bearing maintenance, and tire replacement.
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Procedures Included
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Maintenance:
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Scheduled maintenance tasks, including oil changes, filter replacements, lubrication points, and component checks.
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Troubleshooting:
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Diagnostic flowcharts and symptom-based troubleshooting for common mechanical and electrical issues.
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Repair:
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Step-by-step instructions for repairing or replacing virtually every component on the motorcycle.
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Rebuilds:
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Complete engine and transmission rebuild procedures, including torque specifications and critical measurements.
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Technical Depth
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Technical Depth:
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Comprehensive, covering everything from basic fluid changes to complete engine and transmission overhauls, including diagnostic procedures for electronic systems.
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Engine Specifications
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Primary Engine
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Engine Type:
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Air-cooled, Twin Cam 96 V-Twin
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Displacement:
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1584 cc (96 cubic inches)
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Bore X Stroke:
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3.75 in. x 4.38 in. (95.25 mm x 111.25 mm)
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Compression Ratio:
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8.9:1
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Performance
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Horsepower:
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Approx. 70 HP (at crank, estimated, as Harley-Davidson historically did not publish HP figures).
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Torque:
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Approx. 86 ft-lbs (at 3500 RPM).
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Fuel System
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Fuel Delivery:
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Electronic Sequential Port Fuel Injection (ESPFI)
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Fuel Type:
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Unleaded gasoline, minimum 89 octane (octane rating may vary by region and specific recommendations).
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Lubrication
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Oil Type:
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Harley-Davidson recommends SYN3 (synthetic) or equivalent SAE 20W50 motorcycle oil.
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Oil Capacity:
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Approx. 4 quarts (3.8 liters) with filter change.
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Maintenance
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Service Intervals
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Engine Oil Change Interval:
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Every 5,000 miles (8,000 km) or 12 months, whichever comes first. Refer to manual for specific operating conditions.
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Transmission Oil Change Interval:
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Every 10,000 miles (16,000 km) or 24 months.
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Primary Chain Case Oil Change Interval:
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Every 10,000 miles (16,000 km) or 24 months.
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Spark Plug Replacement:
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Typically every 10,000 miles (16,000 km) or as needed based on inspection.
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Fluid Specifications
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Brake Fluid Type:
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DOT 4 brake fluid (refer to manual for specific Harley-Davidson approved fluid).
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Fork Oil Type:
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Harley-Davidson Suspension Oil (e.g., Type 15 Fork Oil) or equivalent specified viscosity.
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Known Issues
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Common Issues 2006 Twin Cam:
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Potential issues include early cam chain tensioner wear (hydraulic tensioners in later Twin Cam models addressed this, but earlier models had spring-loaded), potential for oil leaks from primary or transmission seals, and clutch release bearing wear. Manual provides diagnostic steps for these.
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