Vehicle Segment:
Full-size Cruiser / Touring Motorcycle
Target Audience:
Touring riders, cruiser enthusiasts, those seeking comfort and classic Harley-Davidson styling
Key Competitors:
Indian Chief Vintage, Honda Gold Wing (Touring Segment), Kawasaki Vulcan 1700 Voyager
Distinctive Features:
Iconic Road King styling, comfortable seating, large saddlebags for storage, powerful V-twin engine, smooth ride, rider-friendly ergonomics, wind protection via Batwing fairing
Manual Value Proposition:
Provides comprehensive factory-level diagnostic and repair information, essential for maintaining the integrity and performance of the 2015 FLHR Road King.
Engine Systems:
Twin Cam 103™ engine, lubrication, fuel system (EFI), ignition system, exhaust system, cooling (air-cooled)
Transmission Drivetrain:
6-speed Cruise Drive transmission, primary drive, belt final drive, clutch
Chassis Suspension Steering:
Frame, front suspension (forks), rear suspension (shocks), steering system, wheels, tires
Braking System:
Front and rear hydraulic disc brakes, ABS (Anti-lock Braking System)
Electrical Systems:
Battery, charging system (alternator, regulator), starting system, lighting, instrumentation, wiring diagrams, security system, accessory circuits
Bodywork Fittings:
Fairing (Batwing), saddlebags, fenders, fuel tank, seat, controls, cables
Maintenance Procedures:
Routine inspections, fluid changes, filter replacements, brake pad service, tire pressure checks, belt tension adjustment
Repair Procedures:
Engine disassembly/assembly, transmission overhaul, suspension component replacement, brake system bleeding, electrical component diagnosis and replacement
Troubleshooting Diagnostics:
Step-by-step diagnostic flowcharts for common and complex issues, error code interpretation
Installation Replacement:
Procedures for replacing major components and accessories
Depth Of Coverage:
Comprehensive, suitable for professional technicians and experienced DIY enthusiasts; includes detailed diagrams and torque specifications
Engine Family:
Harley-Davidson Twin Cam 103™
Engine Type:
Air-cooled, 45-degree V-twin, pushrod-actuated valves, overhead valves
Displacement:
103 cubic inches (1690 cc)
Bore X Stroke:
3.875 in. x 4.38 in. (98.4 mm x 111.3 mm)
Torque:
Approx. 105 ft-lbs (142 Nm) @ 3500 RPM (Factory Spec)
Horsepower:
Approx. 78 HP @ 5000 RPM (Factory Spec - not always officially published)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI), Electronic Throttle Control (ETC)
Fuel Type:
Unleaded gasoline, minimum 89 octane (Octane Rating Recommendation)
Fuel Tank Capacity:
6.0 gallons (22.7 liters)
Transmission Type:
6-speed Cruise Drive
Optional Transmission:
N/A (Standard for FLHR)
Primary Drive:
Plated, wet, multiple-disc, hydraulic actuation
Final Drive:
Carbon-belt, 2.217:1 ratio
Transmission Fluid Type:
Harley-Davidson Syn 3 (or equivalent API GL-5, SAE 80W-90) for transmission; Harley-Davidson Formula+ or equivalent for primary chaincase.
Safety Certification:
Meets applicable US EPA, California EPA and CARB emissions regulations.
ABS:
Standard (Anti-lock Braking System)
Lighting:
Halogen headlight, LED tail/stop lights, amber incandescent front turn signals, clear lens rear turn signals
Security:
Standard H-D Smart Security System (Transponder based)
Audio System:
Boom!™ Box 4.3 Infotainment System (Standard on many FLHR models, optional on some trims)
Features:
AM/FM radio, USB port, Bluetooth connectivity, optional GPS navigation
Driver Assistance Systems:
ABS (Anti-lock Braking System)
Connectivity Options:
Bluetooth for audio streaming and hands-free calling (with compatible devices)
First Service:
1,000 miles (1600 km) or 6 months
Subsequent Services:
Every 5,000 miles (8000 km) or 12 months thereafter
Engine Oil Type:
Harley-Davidson Genuine V-Twin Synthetic Motor Oil 20W-50 or Harley-Davidson Genuine V-Twin 20W-50 (Mineral)
Engine Oil Capacity:
3.8 US quarts (3.6 liters) with filter change
Primary Chaincase Fluid:
Harley-Davidson Formula+ or equivalent
Primary Chaincase Capacity:
3.0 US quarts (2.8 liters) (Check level via inspection plug)
Transmission Fluid:
Harley-Davidson Syn 3 (75W-90) or equivalent SAE 80W-90 API GL-5
Transmission Fluid Capacity:
24 US fl oz (0.7 liters)
Brake Fluid Type:
DOT 4 (For ABS and non-ABS models)
Coolant Type:
N/A (Air-cooled)
Common Wear Items:
Tires, brake pads, drive belt, clutch plates, wheel bearings
Potential Problems:
Cam tensioner wear (early Twin Cam models, but improved by 2015), fuel sensor issues, electrical connector corrosion
Spark Plug Gap:
0.038 - 0.043 in. (0.97 - 1.09 mm)
Idle Speed:
950-1050 RPM (Engine warm)
Tire Pressure Front:
36 psi (2.5 bar) cold
Tire Pressure Rear:
40 psi (2.75 bar) cold (Solo rider), 55 psi (3.8 bar) cold (Rider + passenger/cargo)
Brand Philosophy:
American motorcycle manufacturing, freedom, individualism, classic design, performance
Road King Introduction:
1994
Project Rushmore Impact:
The 2015 model benefits from the 'Project RUSHMORE' updates, focusing on improved rider comfort, storage, and overall performance.
Manufacturing Location:
United States (Various Harley-Davidson facilities)
