Target Audience:
Harley-Davidson owners, independent repair shops, motorcycle technicians specializing in Harley-Davidson motorcycles.
Value Proposition:
Provides authoritative, detailed service information for specific Harley-Davidson Dyna models, enabling accurate maintenance, repair, and troubleshooting, potentially saving significant costs compared to dealership service.
Manual Scope:
Covers multiple popular Dyna models, ensuring broad applicability for owners of these specific year ranges.
Engine Systems:
Engine assembly, disassembly, tuning, cooling, lubrication, fuel delivery, ignition, exhaust, emissions control.
Transmission Drivetrain Systems:
Clutch, primary drive, transmission (gearbox), final drive (belt/chain), torque analysis.
Electrical Systems:
Wiring diagrams, lighting, ignition system, charging system, battery, starter motor, instrument cluster, diagnostics, sensors, ECUs.
Chassis Suspension Systems:
Frame, front fork (suspension, steering), rear shock absorbers, swingarm, wheel bearings, steering head bearings.
Braking Systems:
Front and rear brakes (hydraulic disc), master cylinders, calipers, brake lines, ABS (if equipped), rotor specifications.
Fuel Systems:
Fuel tank, fuel pump, fuel injectors, throttle body, fuel pressure, evaporative emissions control.
Bodywork Fittings:
Fenders, fuel tank, seat, handlebars, mirrors, body panels, fenders, trim.
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, chain/belt adjustment and lubrication, brake fluid flush, tire pressure checks, fluid level checks.
Repair Procedures:
Engine rebuilds, transmission overhauls, suspension component replacement, electrical troubleshooting and repair, brake system repairs, fuel system diagnostics.
Troubleshooting Diagnostics:
Step-by-step diagnostic flowcharts for common and uncommon issues, fault code interpretation, electrical testing procedures.
Technical Specifications Data:
Torque specifications for all fasteners, clearances, tolerances, fluid capacities, electrical component resistance values.
Level Of Detail:
Comprehensive, covering everything from basic scheduled maintenance to complete engine and drivetrain rebuilds.
Digital Format Details:
Likely a PDF or similar digital format, often searchable and printable. Quality dependent on source. May include diagrams and illustrations.
Print Recommendation:
High quality printing recommended for clarity of diagrams and technical data.
Binding Style:
N/A (Digital Download). If printed, typically comb-bound or spiral-bound for lay-flat usability.
Paper Recommendation:
N/A (Digital Download). If printed, durable, thicker paper stock is advisable for workshop use.
Engine Family:
Harley-Davidson Air-Cooled Twin Cam 103 (likely, common for these models and years)
Engine Displacement:
1690 cc (103 cubic inches)
Engine Configuration:
45-degree V-twin, pushrod-actuated overhead valves
Bore X Stroke:
3.875 in. x 4.375 in. (98.4 mm x 111.1 mm) - standard Twin Cam 103
Compression Ratio:
9.6:1 (typical for Twin Cam 103)
Horsepower:
Approx. 70-75 HP (at crankshaft, dependent on model and tuning)
Torque:
Approx. 95-100 lb-ft (at crankshaft, dependent on model and tuning)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded premium gasoline, minimum 91 octane
Ignition System:
Spark Ignition, Electronic Ignition Module (EIM), dual spark plugs per cylinder
Wheelbase:
Varies by model (e.g., Fat Bob ~64.5 inches, Wide Glide ~67 inches)
Seat Height:
Varies by model (e.g., Low Rider ~26 inches, Fat Bob ~27 inches - unladen)
Dry Weight:
Varies by model, typically 600-650 lbs (270-295 kg)
Gvwr:
Typically around 1175 lbs (533 kg)
Fuel Capacity:
3.1 - 3.5 gallons (11.7 - 13.2 L), depending on model (e.g., Fat Bob usually 3.5 gal)
Crash Test Ratings:
N/A (Motorcycles are not subject to standardized automotive crash testing in the same manner as cars).
Braking System:
Hydraulic disc brakes front and rear. ABS (Anti-lock Braking System) was optional on many models by 2015-2016.
Lighting:
Halogen headlight, LED tail/brake lights and turn signals (model dependent).
Tire Specifications:
Specific tire sizes and types (e.g., Dunlop D401 or similar) for front and rear will be detailed in the manual.
Chassis Stability:
Frame design, suspension geometry contribute to stability.
Audio System:
Some models may be equipped with Harley-Davidson Advanced Audio systems with AM/FM radio, CD/MP3 player, and auxiliary input. Specific features vary by model and optional equipment.
Display:
Analog speedometer and tachometer, with integrated digital display for odometer, trip meter, gear indicator, and fuel level.
ABS:
Available as an option on most models for 2015-2016, providing enhanced braking control.
Diagnostics:
On-board diagnostics (OBD-II equivalent for motorcycles) accessible via diagnostic port for service technicians using specialized tools.
Initial Service:
First service typically around 1,000 miles (1600 km) for oil change, filter replacement, primary chain adjustment, and general inspection.
Regular Maintenance:
Subsequent services generally every 5,000 miles (8000 km) for oil, filter, and inspections. More comprehensive checks at higher mileage intervals.
Engine Oil:
Harley-Davidson 20W-50 SYN3 (Full Synthetic) or equivalent motorcycle-specific oil. Capacity approx. 4 quarts (3.8 L) with filter change.
Primary Chain Case Oil:
Harley-Davidson Formula+ (or approved 3-hole oil blend) or SYN3. Capacity approx. 2.8 quarts (2.6 L).
Transmission Oil:
Harley-Davidson SYN3 or approved transmission fluid. Capacity approx. 0.95 quarts (0.9 L).
Brake Fluid:
DOT 4 Hydraulic Fluid.
Clutch Fluid:
DOT 4 Hydraulic Fluid (if hydraulic clutch).
Common Wear Items:
Clutch plates, primary chain tensioner (hydraulic upgrade often recommended for Twin Cam), wheel bearings, fork seals, rear shock bushings.
Potential Electrical Issues:
Wiring harness chafing, regulator/rectifier failures, starter solenoid issues are occasionally reported.
Engine Considerations:
Oil leaks from primary or transmission seals, potential for cam chain tensioner wear on earlier Twin Cams (though improved by 2015).
Harley Davidson Legacy:
Harley-Davidson has a long and storied history in motorcycle manufacturing, dating back to 1903, known for its iconic V-twin engines and custom styling.
Dyna Platform:
The Dyna platform, introduced in 1991, was known for its blend of classic styling with modern performance. It was characterized by its rubber-mounted engine, giving a smoother ride compared to older rigid-mount models. It was eventually phased out and replaced by the Softail platform.
Manufacturing Location:
Primarily manufactured in the United States.
Key Design Elements:
Distinctive styling cues for each model: Fat Bob (fat front tire, dual headlights), Wide Glide (raked front end, tall handlebars), Low Rider (low seat height, forward controls), Street Bob (minimalist styling, bobbed fenders), Switchback (convertible fairing and saddlebags).
