Engine:
Detailed diagnostics, repair, overhaul, troubleshooting for Twin Cam 103 engine.
Transmission:
Service and repair of the 6-speed Cruise Drive transmission.
Electrical:
Comprehensive wiring diagrams, diagnostics for ignition, lighting, starting, charging, and accessories.
Chassis:
Frame, suspension (forks, rear shocks), steering, wheels, and tires.
Brakes:
Front and rear brake system service, adjustments, and component replacement.
Fuel System:
Fuel injection system (EFI), fuel pump, lines, and tank service.
Cooling System:
Air-cooled engine management, cylinder head temperature sensor.
Exhaust System:
Exhaust pipe, muffler, and sensor service.
Bodywork:
Fenders, fuel tank, seat, handlebars, controls, and fairings.
Diagnostics:
Troubleshooting procedures, fault code identification, and diagnostic tool usage (e.g., Digital Technician).
Routine Maintenance:
Oil changes, filter replacements, spark plug service, drive belt inspection/adjustment, chain maintenance (if applicable for specific Dyna variants, though typically belt drive).
Engine Overhaul:
Piston, cylinder, camshaft, crankshaft, and valve train service and repair.
Transmission Rebuild:
Gearbox disassembly, inspection, and reassembly.
Electrical Repair:
Component testing, wiring harness repair, sensor replacement, module troubleshooting.
Brake Service:
Brake pad replacement, caliper service, bleeding procedures, master cylinder overhaul.
Suspension Service:
Fork seal replacement, shock absorber adjustment/replacement.
Wheel And Tire Service:
Tire replacement, wheel balancing, bearing service.
Fuel System Diagnostics:
Fuel injector cleaning, pressure testing, sensor calibration.
Clutch Service:
Clutch plate replacement and adjustment.
Depth:
Factory-level detail, suitable for professional technicians and experienced DIY mechanics.
Diagnostic Capability:
Advanced diagnostics, including troubleshooting trees and component testing procedures.
Rebuild Instructions:
Comprehensive instructions for engine, transmission, and other major component rebuilds.
Engine Type:
Air-cooled, Twin Cam 103™ V-Twin
Displacement:
1690 cc (103 cubic inches)
Bore X Stroke:
3.875 in. x 4.380 in. (98.4 mm x 111.3 mm)
Horsepower:
Approx. 75 HP (Manufacturer's estimate, varies with exhaust/tuning)
Torque:
Approx. 98 ft-lbs @ 3,000 RPM (Manufacturer's estimate, varies with exhaust/tuning)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium unleaded gasoline, 91 octane minimum
Audio System:
Optional factory radio with AM/FM and CB capability on some models.
Display:
Analog speedometer with integrated digital display for odometer, trip meter, gear indication, fuel level, and clock.
ABS:
Anti-lock Braking System (ABS) typically an optional feature, not standard on all 2013 FXDC models.
Diagnostic Interface:
Requires Harley-Davidson Digital Technician or compatible diagnostic tool for advanced system diagnostics.
Initial Service:
Typically at 1,000 miles (1,600 km) or 6 months, whichever comes first.
Subsequent Oil Change:
Every 5,000 miles (8,000 km) or 12 months, whichever comes first.
Drive Belt Tension Check:
Check every 2,500 miles (4,000 km) or every 6 months.
Engine Oil:
Harley-Davidson V-Twin 20W50 Synthetic (or equivalent meeting H-D specifications). Capacity: Approx. 4 quarts (3.8 L) with filter.
Transmission Fluid:
Harley-Davidson Formula +, SAE 50 (or equivalent meeting H-D specifications). Capacity: Approx. 1 quart (0.95 L).
Primary Chain Case Fluid:
Harley-Davidson Formula + (same as transmission fluid). Capacity: Approx. 1 quart (0.95 L).
Common Wear Items:
Clutch plates, primary chain tensioner (hydraulic upgrade often recommended), fork seals, wheel bearings.
Engine Performance Notes:
Torque linkage can wear, affecting engine vibration characteristics; Twin Cam 103 is generally robust but benefits from proper maintenance.
Brand History:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser styling.
Dyna Lineage:
The Dyna platform, introduced in 1991, featured a rubber-mounted engine for reduced vibration, offering a blend of classic styling and modern comfort. The Super Glide Custom (FXDC) typically offered a more custom-oriented aesthetic.
Production Era:
The Dyna platform was produced from 1991 to 2017 before being replaced by the Softail platform.
