Engine:
Evolution V-Twin (1200cc), including disassembly, assembly, tuning, and troubleshooting
Fuel System:
Fuel injection (EFI) system, components, diagnostics, and adjustments
Ignition System:
Electronic ignition, spark plugs, coils, and related components
Transmission:
5-speed constant mesh transmission, clutch, primary drive, and final drive
Electrical System:
Wiring diagrams, battery, charging system, starting system, lighting, instrumentation, and accessories
Braking System:
Front and rear hydraulic disc brakes, master cylinders, calipers, and fluid specifications
Suspension:
Front fork (telescopic) and rear shock absorber systems, including adjustments and overhaul
Frame And Bodywork:
Frame inspection, body panel removal/installation, seat, fenders, and tanks
Wheels And Tires:
Wheel bearing maintenance, tire pressure, and replacement procedures
Exhaust System:
Exhaust components, gaskets, and mounting hardware
Cooling System:
Air-cooled engine management, oil cooler (if applicable to specific sub-models)
Routine Maintenance:
Oil changes, filter replacements, spark plug inspection/replacement, chain/belt adjustments, lubrication
Troubleshooting:
Diagnostic charts, common problems, and step-by-step solutions for various systems
Engine Overhaul:
Detailed procedures for engine disassembly, component inspection, reassembly, and break-in
Transmission Repair:
Clutch adjustment, primary drive inspection, transmission disassembly and reassembly
Electrical Diagnostics:
Troubleshooting electrical faults using wiring diagrams, testing procedures for components
Brake System Maintenance:
Brake fluid bleeding, pad replacement, caliper service, and master cylinder replacement
Suspension Service:
Fork seal replacement, fork oil changes, rear shock absorber service
Fuel System Cleaning:
Injector cleaning, fuel filter replacement, fuel line inspection
Performance Tuning:
Basic adjustments for EFI and ignition timing (where applicable and user-adjustable)
Depth:
Comprehensive from basic maintenance to advanced internal component repair and diagnostics
Engine Type:
Air-cooled, Evolution V-Twin
Displacement:
1200cc (73.3 cu. in.)
Bore X Stroke:
3.496 in. x 4.000 in. (88.8 mm x 101.6 mm)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Horsepower:
Approximately 67 hp @ 5500 rpm (Manufacturer estimate, actual may vary)
Torque:
Approximately 70 ft-lbs @ 3500 rpm (Manufacturer estimate, actual may vary)
Fuel Type:
Unleaded gasoline, minimum 91 octane (R+M)/2
First Service:
1,000 miles (1,600 km) or 6 months
Subsequent Service:
Every 5,000 miles (8,000 km) or 12 months thereafter
Engine Oil Change:
Every 5,000 miles (8,000 km) or annually, whichever comes first
Transmission Oil Change:
Every 10,000 miles (16,000 km) or 24 months
Primary Chain Case Oil Change:
Every 10,000 miles (16,000 km) or 24 months
Engine Oil Type:
Harley-Davidson SYN3 (SAE 20W-50) or equivalent V-twin specific motorcycle oil
Engine Oil Capacity:
3.0 US qt. (2.8 L) with filter change
Transmission Fluid Type:
Harley-Davidson Formula+ or equivalent
Transmission Fluid Capacity:
1 US qt. (0.95 L)
Primary Chain Case Fluid Type:
Harley-Davidson Formula+ or equivalent
Primary Chain Case Fluid Capacity:
1 US qt. (0.95 L)
Brake Fluid Type:
DOT 4 hydraulic fluid
Primary Chain Tensioner:
Early models (pre-2007) had a less robust tensioner; 2008 models typically have the improved hydraulic unit. Regular inspection for wear is advised.
Fuel System Efi:
EFI systems can be sensitive to fuel quality and may require occasional cleaning of fuel injectors.
Rear Belt Drive:
Requires proper tensioning and inspection for cracks or damage. Belt replacement interval is typically longer than chain, but proper alignment is crucial.
Heritage:
Harley-Davidson is an iconic American motorcycle manufacturer with a rich history dating back to 1903, known for its V-twin engines and distinctive styling.
Sportster Lineage:
The Sportster line, introduced in 1957, is one of the longest-running motorcycle models in continuous production, evolving through various engine displacements and styles, including the XL1200C Custom which emphasizes classic styling with modern features.
Manufacturing Location:
United States (Wisconsin)