🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHR Road King

Year:

2012

Product Type:

Workshop Service Manual

Chassis Code:

FLHR

👋 Introduction

Market Position:

The Harley-Davidson FLHR Road King is positioned as a premium, classic touring motorcycle, emphasizing rider comfort, iconic styling, and the touring capability for long-distance journeys.

Competitors:

Competes with other large-displacement cruisers and touring motorcycles from brands like Indian Motorcycle, Victory (now defunct), and some European manufacturers offering similar touring capabilities.

Key Features:

Detachable windshield, large-capacity saddlebags, comfortable rider and passenger seating, classic styling cues, powerful V-twin engine, and a robust touring platform.

📋 Manual Details

Manual Coverage Scope:

Complete vehicle repair and maintenance

Page Count:

726

Manual Type:

Workshop Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine System:

Twin Cam 103 V-Twin engine service, troubleshooting, overhaul, and diagnostics

Fuel System:

Fuel injection (EFI), fuel pump, fuel filter, fuel tank service, throttle body maintenance

Ignition System:

Spark plugs, ignition coils, crank position sensors, ignition module diagnostics

Transmission System:

6-speed Cruise Drive transmission service, clutch service, gear inspection, shift mechanism repair

Electrical System:

Wiring diagrams, battery service, charging system (stator, regulator/rectifier), starter motor, lighting, H-D Smart Security System

Brakes System:

Hydraulic brake system, front and rear brake calipers, master cylinders, brake lines, ABS (Anti-lock Braking System) diagnostics and service

Suspension System:

Front fork service (including telescopic fork), rear shock absorber replacement and adjustment, swingarm service

Wheel And Tire System:

Wheel bearing replacement, tire mounting and balancing, spoke wheel maintenance

Bodywork And Fittings:

Fairing removal and installation, fender service, saddlebag service, handlebar and control adjustments, seat mounting

Chassis And Frame:

Frame inspection, steering head bearing service, pivot point lubrication

Diagnostics:

Troubleshooting guides for common and uncommon issues, diagnostic trouble codes (DTCs) and their meanings

Preventative Maintenance:

Oil changes, filter replacements, lubrication points, brake fluid flushes, scheduled inspections

Engine Overhaul:

Piston and cylinder removal/installation, valve adjustments, camshaft service, crankshaft inspection

Transmission Rebuild:

Disassembly and reassembly of the 6-speed gearbox, bearing replacement, seal installation

Electrical Troubleshooting:

Component testing, circuit tracing using wiring diagrams, sensor diagnostics

Brake System Repair:

Caliper rebuilding, master cylinder replacement, brake line bleeding, ABS module diagnostics

Suspension Maintenance:

Fork seal replacement, oil changes, shock absorber adjustment and replacement

Fuel System Cleaning:

Fuel injector cleaning, throttle body synchronization, fuel line inspection

Bodywork Restoration:

Panel alignment, cosmetic repair guidance, component reassembly

Technical Depth:

Comprehensive: Covers routine maintenance to complete engine and transmission rebuilds, including electrical system diagnostics and troubleshooting.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution, clear text and diagrams suitable for printing

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Searchability:

Searchable text for quick information retrieval

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 103 V-Twin

Displacement:

1690 cc (103 cubic inches)

Bore X Stroke:

3.875 in. x 4.38 in. (98.4 mm x 111.3 mm)

Compression Ratio:

9.0:1

Horsepower:

Approx. 75 HP (varies with tuning and conditions)

Torque:

Approx. 97 ft-lbs @ 3500 RPM (varies with tuning and conditions)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium Unleaded Gasoline

Engine Oil Capacity:

4.0 US quarts (3.8 liters) with filter change

Recommended Engine Oil:

Harley-Davidson Genuine Formula SYN3 (SAE 20W-50) or equivalent

🔧 Transmission

Transmission Type:

6-speed Cruise Drive

Gear Ratios:

1st: 9.593, 2nd: 6.650, 3rd: 4.938, 4th: 3.820, 5th: 3.130, 6th: 2.630 (Typical values, consult manual for exact ratios)

Clutch Type:

Clutched, Nine-Plate, Wet

Transmission Oil Type:

Harley-Davidson Formula + (SAE 50) or SYN3

Primary Drive:

Plated, Uncountershaft, 34/46 ratio

Final Drive:

Carbon Belt, 32/66 ratio

📐 Dimensions

Length:

94.5 in. (2400 mm)

Width:

37.2 in. (945 mm)

Height:

54.1 in. (1375 mm)

Seat Height Laden:

26.7 in. (678 mm)

Front Tire Size:

130/90B16 67H BW

Rear Tire Size:

180/65B16 81H BW

Dry Weight:

725 lbs. (329 kg)

Gross Vehicle Weight Rating:

1260 lbs. (572 kg)

Fuel Tank Capacity:

5.0 US gallons (18.9 Liters)

🛡️ Safety Features

ABS:

Optional, but standard on many 2012 models

Braking System:

Hydraulic disc brakes front and rear; optional ABS integration

Lighting:

Halogen headlight, LED tail light, integrated front and rear turn signals

Security System:

Standard H-D Smart Security System with immobilizer

💡 Technology Features

Audio System:

Factory-installed AM/FM/WB radio with CD player and CB/intercom capability (depending on specific trim/options). Often features speakers integrated into the fairing.

Display:

Analog gauges with integrated digital display for odometer, trip meter, gear indicator, and diagnostics.

Cruise Control:

Standard Electronic Cruise Control

Usb Ipod Integration:

Optional accessory integration for iPod and USB devices, typically via handlebar-mounted controls.

🔧 Maintenance

First Service:

1,000 miles (1,600 km) or 6 months

Subsequent Service:

Every 5,000 miles (8,000 km) or 12 months, whichever comes first

Primary Chain Case Oil:

Harley-Davidson Primary Fluid or SYN3

Brake Fluid:

DOT 4

Clutch Fluid:

DOT 4 (if hydraulic clutch)

Transmission Oil Capacity:

24 US oz. (0.71 Liters)

Primary Chain Case Oil Capacity:

2.8 US quarts (2.6 Liters)

Known Issues General:

While generally reliable, common minor issues can include regulator/rectifier failures, clutch lever adjustment, and occasional electronic glitches. The Twin Cam 103 is robust.

Oil Leaks:

Can occur from primary or transmission seals if not properly maintained or during high mileage.

ABS Maintenance:

ABS systems require periodic fluid flushes and can be sensitive to sensor contamination.

📚 Vehicle History

Brand Heritage:

Harley-Davidson boasts a long and rich heritage in motorcycle manufacturing, dating back to 1903, known for its iconic V-twin engines and distinct American cruiser styling.

Road King Evolution:

The Road King line, introduced in 1994, represents a modern interpretation of classic touring motorcycles, blending vintage aesthetics with contemporary technology. The 'King of the Highway' ethos is central to its design.

Manufacturing Location:

York, Pennsylvania, USA, and Milwaukee, Wisconsin, USA

Key Milestones 2012:

The 2012 model year saw the widespread adoption of the Twin Cam 103 engine across the touring line, offering increased torque and power for enhanced performance.

🏆 Awards & Recognition

Motorcycle Awards:

Harley-Davidson motorcycles, including the Road King line, consistently receive high praise in rider surveys and automotive publications for their build quality, comfort, and iconic status.

Owner Satisfaction:

High owner satisfaction ratings for touring comfort and overall riding experience.