🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLD Dyna Switchback

Year:

2015

Product Type:

Service Repair Manual

Engine Code:

Revolution Max (commonly referred to as Twin Cam 103B for this era)

👋 Introduction

Segment:

Cruiser Motorcycle

Target Audience:

Harley-Davidson FLD Dyna Switchback owners and independent repair shops.

Key Competitors:

Indian Chief, Victory Cross Country, and other large-displacement American cruisers.

Motorcycle Design Philosophy:

Combines classic Harley-Davidson cruiser styling with the versatility of detachable saddlebags and windscreen, allowing for quick conversion between touring and cruising configurations.

Manual Value Proposition:

Provides essential technical information for maintaining and repairing the 2015 FLD Dyna Switchback, enabling cost-effective ownership and self-sufficiency.

📋 Manual Details

Manual Scope:

Repair and overhaul of the 2015 Harley-Davidson FLD Dyna Switchback

Estimated Page Count:

Likely 500-800 pages (typical for comprehensive Harley-Davidson service manuals)

Manual Classification:

Workshop Service Manual / Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine System:

Engine assembly, disassembly, inspection, repair, troubleshooting for Twin Cam 103B V-Twin engine.

Fuel System:

Fuel injection (EFI), fuel pump, fuel tank, lines, injectors, throttle body servicing and diagnostics.

Ignition System:

Ignition module, spark plugs, ignition coils, timing and troubleshooting.

Transmission System:

Six-speed Cruise Drive transmission, clutch operation, gear inspection, bearing replacement, troubleshooting.

Drivetrain System:

Belt drive system, primary drive, final drive belt inspection, tensioning, and replacement.

Braking System:

Hydraulic brake system, front and rear brake calipers, master cylinders, brake lines, pads, rotors, bleeding procedures.

Suspension System:

Front fork assembly (GTS) including oil change and seal replacement, rear shock absorbers, swingarm servicing.

Electrical System:

Wiring diagrams, battery, charging system (stator, regulator/rectifier), lighting, starting system, fuses, relays, diagnostic codes.

Bodywork And Frame:

Frame, front fender, rear fender, fuel tank, seat, fairing, saddlebags, mounting hardware, alignment.

Wheels And Tires:

Wheel bearing inspection and replacement, tire mounting and balancing, wheel truing (if applicable).

Controls And Cables:

Handlebar controls, throttle cables, clutch cable, brake cables, foot controls, cruise control system.

Routine Maintenance:

Oil changes, filter replacement, spark plug replacement, air filter servicing, lubrication, brake pad checks.

Troubleshooting Diagnostics:

System-specific diagnostic procedures, error code interpretation, common fault identification.

Engine Rebuild:

Complete engine overhaul, piston replacement, cylinder honing, valve adjustments, gasket replacement.

Transmission Overhaul:

Disassembly and reassembly of the Cruise Drive transmission, including gearset inspection and bearing replacement.

Electrical Repairs:

Component testing, wiring harness repair, diagnostic tool usage, sensor replacement.

Suspension Repair:

Front fork seal replacement, damper rod servicing, rear shock absorber replacement.

Brake Service:

Brake bleeding, caliper service, master cylinder rebuild, rotor replacement.

Bodywork Repair And Adjustment:

Fender replacement, fairing repair, fuel tank mounting, saddlebag installation, alignment adjustments.

Diagnostic Capability:

Advanced diagnostics including Harley-Davidson's Digital Technician (DT) compatibility and error code interpretation.

Rebuild Capability:

Comprehensive coverage for complete engine and transmission rebuilds, including internal component specifications.

Special Tools Required:

Identification and usage of specialized Harley-Davidson tools required for specific procedures.

Torque Specifications:

Detailed torque values for all critical fasteners across all systems.

Clearances And Tolerances:

Specifications for critical clearances and tolerances for engine and transmission components.

Wiring Diagrams Completeness:

Detailed, color-coded wiring diagrams for all electrical systems.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content for quick information retrieval.

Image Resolution:

High-resolution images and diagrams for clarity.

Document Clarity:

Professionally formatted for easy reading and printing.

Binding:

N/A (Digital PDF)

Paper:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 103B 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:

9.6:1

Valve Train:

Pushrod-actuated, overhead valves with two valves per cylinder

Horsepower:

Approximately 78 hp @ 5010 rpm (Manufacturer claimed, can vary slightly)

Torque:

Approximately 99.5 ft-lbs @ 3250 rpm (Manufacturer claimed, can vary slightly)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Unleaded gasoline, minimum 91 octane

🔧 Transmission

Transmission Type:

6-speed Cruise Drive

Clutch Type:

Clutch, constant mesh, wet multi-plate

Primary Drive:

Belt, 34/46 ratio

Final Drive:

Belt, 32/66 ratio

Gear Ratios:

1st: 9.593, 2nd: 6.650, 3rd: 4.934, 4th: 3.831, 5th: 3.155, 6th: 2.790

Transmission Fluid Type:

Harley-Davidson transmission oil, SAE 80W-90 or equivalent

📐 Dimensions

Length:

92.3 in. (2345 mm)

Width:

35.0 in. (889 mm)

Height:

49.4 in. (1255 mm)

Wheelbase:

64.2 in. (1630 mm)

Ground Clearance:

4.7 in. (119 mm)

Dry Weight:

651 lbs (295 kg)

Wet Weight:

692 lbs (314 kg)

Gross Vehicle Weight Rating Gvwr:

1060 lbs (481 kg)

Saddlebag Capacity:

Approximately 1.7 cu ft per bag (detachable, locking)

🛡️ Safety Features

Crash Test Ratings:

Motorcycles are not typically subject to standardized crash test ratings like automobiles.

Braking System:

Dual-channel Anti-lock Braking System (ABS) standard on 2015 models.

Lighting:

Halogen headlamp, LED tail lamps and stop lamps, amber LED front and rear turn signals.

Frame Construction:

Steel, welded frame and swingarm.

Ergonomics:

Ergonomically designed for rider comfort and control, with a low seat height.

💡 Technology Features

Audio System:

Optional: Harley-Davidson Advanced Audio System with AM/FM radio, CB, and Intercom (if equipped).

Display:

Analog speedometer with integrated digital display for odometer, trip meter, gear indicator, fuel level, and clock (if equipped).

Cruise Control:

Standard electronic cruise control.

Diagnostic Tools:

Requires Harley-Davidson Digital Technician (DT) or equivalent diagnostic tool for advanced troubleshooting and module programming.

🔧 Maintenance

First Service:

1,000 miles (1,600 km) or 6 months, whichever comes first.

Subsequent Services:

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

Engine Oil Type:

Harley-Davidson SYN3 (Fully Synthetic) SAE 20W-50 or Harley-Davidson Genuine Motor Oil SAE 20W-50.

Engine Oil Capacity:

3.0 US quarts (2.8 liters) with filter change.

Primary Chain Case Oil Type:

Harley-Davidson primary chaincase lubricant, SAE 85W-140 or Formula +.

Primary Chain Case Oil Capacity:

24 US fluid ounces (0.71 liters).

Transmission Oil Type:

Harley-Davidson transmission oil, SAE 80W-90 or Formula +.

Transmission Oil Capacity:

28 US fluid ounces (0.83 liters).

Brake Fluid Type:

DOT 4 Harley-Davidson Premium Motorcycle Brake Fluid.

Common Wear Items:

Clutch wear, drive belt wear, brake pads, fork seals, wheel bearings.

Engine Related Concerns:

While generally reliable, potential issues can include oil leaks due to aging seals, occasional sensor failures, or clutch adjustment needs.

Electrical Concerns:

Some owners report issues with voltage regulators or stator failures over time, though this is not exclusive to the Switchback.

Chassis Concerns:

Front fork seals can be susceptible to leaks, particularly with heavy use or exposure to elements.

Air Filter Part Number Example:

Harley-Davidson part number 29000004 (for Screamin' Eagle Heavy Breather, check specific application)

Oil Filter Part Number Example:

Harley-Davidson part number 63796-77B or 63731-98

📚 Vehicle History

Brand History:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser-style motorcycles.

Dyna Lineage:

The Dyna family, introduced in 1991, is characterized by its rubber-mounted engine for reduced vibration and a more traditional motorcycle look compared to the Softail line.

Switchback Introduction:

The FLD Dyna Switchback was introduced for the 2012 model year, designed to offer riders the flexibility to quickly convert between a comfortable cruiser and a touring machine.

Production Years:

2012-2016

Manufacturing Location:

USA (Various Harley-Davidson facilities)

🏆 Awards & Recognition

Industry Recognition:

While specific awards for the FLD Dyna Switchback are not widely publicized, Harley-Davidson motorcycles consistently receive recognition for their iconic design, V-twin performance, and rider lifestyle.

Owner Satisfaction:

Generally high owner satisfaction due to brand loyalty and the unique convertible nature of the model.

Manufacturing Standards:

Manufactured to Harley-Davidson's stringent internal quality and safety standards.