🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna

Year:

2015

Chassis Code:

This manual covers the entire 2015 Dyna range, which typically includes models like the Street Bob, Fat Bob, Low Rider, Switchback, and Sportster (though Sportster models have their own specific service manual, this manual focuses on the Dyna platform).

Engine Code:

Primarily Twin Cam 103 (1690cc) V-Twin, with potential for Twin Cam 110 variants on specific models. Manual will detail specific engine codes for each Dyna model.

👋 Introduction

Target Audience:

Professional motorcycle technicians, dealership service departments, and experienced DIY Harley-Davidson owners seeking in-depth repair and maintenance information.

Value Proposition:

Provides essential technical data, repair procedures, and diagnostic information necessary for maintaining and repairing the 2015 Harley-Davidson Dyna models to factory specifications, ensuring optimal performance and longevity.

Comparison To Other Manuals:

This manual is a comprehensive factory-level resource, offering a depth of detail typically surpassing generic Haynes or Chilton style manuals. It is the official standard for service procedures.

Completeness:

Covers all aspects of the 2015 Dyna models, from routine maintenance to complete engine and transmission overhauls.

Accuracy:

Contains factory-authorized procedures, specifications, and diagrams, ensuring accuracy for repairs.

📋 Manual Details

Systems Covered:

Engine, fuel system, ignition system, transmission, clutch, brakes (front and rear), suspension (front and rear), electrical system, lighting, chassis, frame, wheels, tires, bodywork, controls, and diagnostics.

Page Count:

Varies by specific edition, but typically between 500-800 pages for a comprehensive workshop manual covering multiple models within a platform.

Manual Type:

Workshop Service Manual / Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Powertrain:

Detailed coverage of the Twin Cam engine (Twin Cam 103/110), including disassembly, inspection, assembly, and troubleshooting of engine components, lubrication, cooling, and fuel delivery.

Drivetrain:

Comprehensive information on the clutch, primary drive, transmission (6-speed Cruise Drive), final drive, and all associated components and procedures.

Suspension And Steering:

In-depth guides for front forks (e.g., telescopic, Springer depending on specific Dyna model) and rear shock absorbers, including service, adjustment, and replacement procedures. Covers steering head bearing service.

Brakes:

Detailed instructions for servicing front and rear brake systems, including hydraulic components, calipers, rotors, master cylinders, and bleeding procedures. ABS system coverage may be included for models equipped with it.

Electrical And Ignition:

Extensive coverage of the electrical system, including battery, charging system, ignition system, lighting, starting system, fuses, relays, wiring diagrams, and troubleshooting common electrical faults.

Bodywork And Fittings:

Procedures for removing, installing, and servicing body panels, fuel tank, fenders, seat, handlebars, and other cosmetic and functional components.

Preventative Maintenance:

Detailed schedules for oil changes, filter replacements, tire pressure checks, brake fluid checks, chain adjustment (if applicable), and other routine maintenance tasks.

Troubleshooting:

Systematic diagnostic procedures, symptom-based troubleshooting guides, and diagnostic trouble codes (DTCs) for identifying and resolving common and uncommon issues.

Engine Repair And Rebuild:

Step-by-step instructions for complete engine disassembly, inspection of internal components (pistons, rings, valves, camshafts), cylinder head service, and reassembly, including torque specifications and clearances.

Transmission And Drivetrain Service:

Procedures for clutch service, transmission disassembly, inspection, and reassembly, including gear sets, shift forks, and bearings. Covers primary drive maintenance and final drive belt inspection and adjustment.

Electrical System Diagnostics:

Comprehensive guides for diagnosing and repairing electrical issues, including starting and charging system tests, ignition system troubleshooting, and fuel injection system diagnostics (EFI).

Chassis And Suspension Overhaul:

Instructions for servicing wheel bearings, steering head bearings, fork seals, fork oil replacement, and rear shock absorber maintenance and replacement.

Depth Of Coverage:

Highly detailed, covering everything from basic maintenance and fluid changes to complete engine rebuilds, transmission overhauls, and advanced electrical system diagnostics. Geared towards professional technicians but accessible to experienced DIY mechanics.

Diagnostic Capabilities:

Includes diagnostic procedures for Electronic Fuel Injection (EFI) systems, ignition systems, and other electronic components, often referencing specific diagnostic tools or procedures.

Torque Specifications:

Provides precise torque values for critical fasteners across all systems, ensuring proper assembly and preventing component damage.

Special Tools:

Lists and describes necessary special tools and equipment required for specific repair and maintenance procedures.

📊 Manual Specifications

File Format:

PDF (Portable Document Format)

Print Quality:

High-resolution digital format, optimized for clarity of text and diagrams. Printable pages.

Binding Type:

N/A (Digital PDF format)

Paper Type:

N/A (Digital PDF format)

Searchability:

Searchable text content within the PDF for quick access to specific topics and procedures.

Illustrations:

Includes detailed diagrams, exploded views, schematics, and photographs to aid in understanding complex procedures and component identification.

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 103 V-Twin (1690cc)

Bore X Stroke:

3.875 in. x 4.380 in. (98.4 mm x 111.3 mm)

Displacement:

103 cu. in. (1690cc)

Compression Ratio:

9.6:1

Fuel System:

Electronic Sequential Port Fuel Injection (ESPFI)

Horsepower Rating:

Typically around 70-75 HP (varies by model and dyno testing)

Torque Rating:

Typically around 95-100 ft-lbs @ 3000-3500 RPM (varies by model)

Recommended Oil Type:

Harley-Davidson SYN3 Synthetic Motorcycle Oil (SAE 20W-50) or equivalent V-Twin specific synthetic oil.

Engine Oil Capacity:

Approximately 4 quarts (3.8 liters) with filter change.

🔧 Transmission

Transmission Type:

6-speed Cruise Drive Transmission

Gear Ratios:

First: 9.312, Second: 6.412, Third: 4.724, Fourth: 3.727, Fifth: 3.207, Sixth: 2.790 (Note: Ratios may vary slightly by specific model)

Clutch Type:

Wet, multi-plate, hydraulic actuation

Transmission Oil Type:

Harley-Davidson Formula+ or SAE 85W-140 Gear Oil

Transmission Oil Capacity:

Approximately 20 oz (591 ml)

📐 Dimensions

Wheelbase:

Varies by model, typically 64.2 - 64.4 inches (1631 - 1636 mm)

Dry Weight:

Varies by model, typically 647 - 670 lbs (294 - 304 kg)

Gvwr:

Varies by model, typically around 1000 - 1030 lbs (454 - 467 kg)

Fuel Tank Capacity:

Typically 4.7 US gallons (17.8 liters)

🛡️ Safety Features

Braking System:

Dual-piston front and rear calipers with hydraulic actuation. ABS (Anti-lock Braking System) available on select models.

Frame Construction:

Steel, tubular frame and swingarm designed for stability and handling.

Headlight Type:

Halogen headlight (e.g., 55W H4) for primary models.

💡 Technology Features

Audio System:

Many Dyna models offer optional integrated audio systems with AM/FM radio and iPod/MP3 connectivity. Manual will detail operation and troubleshooting.

ABS:

Anti-lock Braking System (ABS) available as an option on some 2015 Dyna models for enhanced braking control.

Diagnostic Ports:

Diagnostic connectors for use with Harley-Davidson Digital Technician II or compatible diagnostic tools to read fault codes and monitor system data.

🔧 Maintenance

First Service:

Typically at 1,000 miles (1,600 km) or 6 months, whichever comes first. Includes oil and filter change, primary chain adjustment, and general inspection.

Subsequent Service:

Every 5,000 miles (8,000 km) or 12 months thereafter. Includes engine oil and filter, primary chain inspection/adjustment, brake inspection, tire inspection, and other checks as outlined in the manual.

Brake Fluid Type:

DOT 4 or DOT 5.1 (depending on specific model/year configuration, manual will clarify). For ABS models, specific DOT requirements may apply.

Fork Oil Type:

Harley-Davidson Factory Fork Oil (H-D 10W) or equivalent (manual will specify viscosity based on model).

Common Wear Items:

Clutch plates, brake pads, tires, wheel bearings, fork seals, and drive belt are common wear items requiring periodic inspection and replacement.

Potential Electrical Gremlins:

Wiring harness integrity, battery voltage stability, and accessory electrical connections can sometimes be sources of troubleshooting.

Spark Plug Replacement:

Regular replacement as per service interval, with specific torque values and gap settings provided in the manual.

Air Filter Maintenance:

Cleaning or replacement of the air filter element as per schedule, crucial for engine performance and longevity.

📚 Vehicle History

Harley Davidson Legacy:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines, distinctive styling, and robust build quality. The brand evokes a sense of freedom, rebellion, and American heritage.

Dyna Platform Evolution:

The Dyna line, introduced in 1991, represented a significant evolution for Harley-Davidson, featuring a rubber-mounted engine for reduced vibration, a more modern chassis design, and a blend of classic styling with improved performance. The 2015 models represent a mature iteration of this successful platform.

Production Years For Dyna:

1991-2017. The Dyna platform was replaced by the Softail platform in 2018.

🏆 Awards & Recognition

Industry Awards:

While specific awards for individual model years are not typically highlighted in service manuals, the Dyna platform has consistently been recognized for its blend of performance, handling, and classic Harley-Davidson styling, contributing to Harley-Davidson's strong market presence.

Emissions Compliance:

The manual will detail emissions control systems and their maintenance requirements to meet federal and state regulations.