Market Segment:
Cruiser / Power Cruiser
Target Audience:
Harley-Davidson owners and independent repair shops servicing Dyna models.
Key Competitors:
Indian Motorcycles (Chief, Scout), Victory Motorcycles (Cross Country, Vegas), Japanese cruisers (Honda Shadow, Yamaha Bolt, Kawasaki Vulcan).
Platform Strength:
Dyna platform is known for its accessible riding position, V-twin power, and customization potential, bridging the gap between traditional cruisers and more performance-oriented bikes.
Manual Value Proposition:
Provides expert-level technical guidance to perform a wide range of maintenance and repair tasks, saving costs and ensuring proper vehicle upkeep.
Coverage Scope:
Comprehensive service, repair, and troubleshooting for all listed 2015 Harley-Davidson Dyna models.
Page Count Estimated:
Over 700 pages (typical for Harley-Davidson service manuals)
Manual Type:
Factory Authorized Service Manual / Workshop Manual
Engine System:
Twin Cam 103 (positive or rubber mounted depending on specific model variant), lubrication, cooling, fuel & exhaust systems, engine diagnostics, performance tuning.
Transmission System:
6-speed Cruise Drive transmission, clutch, primary drive, internal gear inspection and repair, fluid service.
Electrical System:
Ignition, lighting, charging system (alternator, stator, regulator), starting system, battery service, instrumentation, EFI (Electronic Fuel Injection) system, diagnostics, wiring diagrams.
Chassis System:
Frame, suspension (front forks, rear shock absorbers), steering, wheel bearings, brakes (front and rear disc brakes, ABS components if applicable), tires.
Bodywork And Trim:
Fenders, fuel tank, seat, handlebars, controls, mirrors, exhaust system mounting, body panel removal and installation.
Maintenance Procedures:
Routine maintenance, oil changes, filter replacements, spark plug service, brake pad replacement, belt adjustments, battery charging, fluid level checks.
Repair Procedures:
Engine overhaul, transmission rebuild, brake system repair, electrical component replacement, suspension overhaul, fuel system component diagnosis and repair.
Troubleshooting Guides:
Diagnostic charts for common problems, symptom-based troubleshooting, error code interpretation for EFI system.
Technical Specifications:
Torque specifications for all fasteners, fluid capacities, electrical specifications, diagnostic parameters, timing settings.
Depth Of Coverage:
Comprehensive, from basic maintenance to complete engine and transmission rebuilds. Includes detailed schematics and diagnostic procedures.
Engine Type:
Air-cooled, Twin Cam 103B (Black or Chrome finish, depending on model variant)
Displacement:
1690 cc (103 cubic inches)
Bore X Stroke:
3.875 in. x 4.38 in. (98.4 mm x 111.3 mm)
Horsepower Estimated:
Approx. 77 HP @ 5010 RPM (flywheel horsepower, may vary)
Torque Estimated:
Approx. 101 lb-ft @ 3200 RPM (flywheel torque, may vary)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded premium gasoline, 91 octane or higher recommended.
Oil Type Specification:
Harley-Davidson SYN3 Synthetic Motorcycle Oil (or equivalent V-twin specific synthetic oil meeting H-D specifications).
Oil Capacity:
3.0 US quarts (2.8 Liters) with filter change.
Transmission Type:
6-Speed Cruise Drive
Optional Transmission:
N/A (All 2015 Dyna models featured the 6-speed Cruise Drive)
Primary Drive Type:
Spur gear, 1.366:1 ratio.
Transmission Fluid Type:
Harley-Davidson Formula+ (or equivalent SAE 50 motorcycle transmission fluid).
Transmission Fluid Capacity:
2.5 US quarts (2.4 Liters)
Length Overall Fxdf Fat Bob:
91.1 inches (2315 mm)
Length Overall Fxdwg Wide Glide:
95.7 inches (2430 mm)
Wheelbase Fxdf Fat Bob:
63.7 inches (1618 mm)
Wheelbase Fxdwg Wide Glide:
67.2 inches (1707 mm)
Ground Clearance:
Varies by model, typically around 4.5-5 inches (114-127 mm).
Dry Weight Fxdf Fat Bob:
Approx. 677 lbs (307 kg)
Dry Weight Fxdwg Wide Glide:
Approx. 702 lbs (318 kg)
Gvwr:
Varies by model, typically around 1180-1200 lbs (535-544 kg)
Safety Certification:
Meets EPA, CARB, and DOT requirements for the respective markets.
Braking System:
Dual-action, front and rear disc brakes. Optional Anti-lock Braking System (ABS) available on select models/trims.
Lighting:
Halogen headlamp, LED tail lamp and stop lamp, amber incandescent front and rear turn signals.
Chassis Stability:
Low center of gravity, robust frame design contributing to stable handling.
Instrumentation:
Analog speedometer with integrated digital tachometer, gear indicator, fuel gauge, clock, and diagnostic indicators. May feature optional H-D infotainment systems on higher trims.
ABS:
Optional Anti-lock Braking System (ABS) available on select models for enhanced braking control.
Diagnostic Ports:
H-D proprietary diagnostic connector for use with Harley-Davidson Digital Technician II or compatible aftermarket tools.
Efi System:
Electronic Sequential Port Fuel Injection (ESPFI) for precise fuel delivery and emissions control.
Initial Service:
1000 miles (1600 km) or 6 months, whichever comes first.
Subsequent Engine Oil Service:
Every 5000 miles (8000 km) or 12 months, whichever comes first.
Transmission Oil Service:
Every 10,000 miles (16,000 km) or 24 months.
Primary Chain Case Oil Service:
Every 20,000 miles (32,000 km) or 48 months.
Spark Plug Replacement:
Every 10,000 miles (16,000 km).
Brake Fluid:
DOT 4 for ABS models, DOT 5.1 for non-ABS models (refer to manual for specific model application).
Fork Oil:
Harley-Davidson Suspension Fluid Type 1 (or equivalent 10W fork oil).
Common Issues Vibrations:
Due to the rubber-mounted engine, some vibrations can be felt, especially at idle. Issues can arise if engine mounts degrade.
Common Issues Charging System:
Stator failures or regulator/rectifier issues can occur, affecting battery charging. Regular voltage checks are recommended.
Common Issues Fuel System:
Occasional issues with fuel injectors or the electronic throttle control (ETC) sensor may require diagnosis.
Common Issues Clutch:
Clutch cable adjustment and wear can impact clutch operation; hydraulic clutch systems on later models are generally robust.
Brand Origins:
Harley-Davidson Motor Company, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser motorcycles.
Dyna Lineage:
The Dyna line, introduced in 1991, was characterized by its rubber-isolated powertrain, offering a blend of classic styling and modern comfort. The Twin Cam engine became standard in 2000.
2015 Updates:
For 2015, Dyna models largely carried over the Twin Cam 103 engine and chassis refinements from previous years. Key model variants offered distinct styling and features, such as the Fat Bob's fat tire, Wide Glide's chopper styling, and Switchback's touring versatility.
Manufacturing Location:
United States (various Harley-Davidson plants)
Production End Of Line:
The Dyna line was discontinued after the 2017 model year, with its platform evolving into the Softail line starting in 2018.
