Segment:
Cruiser Motorcycle
Target Audience:
Harley-Davidson owners, DIY mechanics, motorcycle repair shops.
Key Competitors:
Other V-twin cruisers from brands like Indian Motorcycle, Victory Motorcycles (discontinued), Japanese manufacturers' cruiser offerings.
Model Appeal:
Stripped-down, aggressive styling, minimalist approach, customizable platform, iconic V-twin engine.
Manual Value:
Essential for maintaining performance, longevity, and ensuring safe operation of the Harley-Davidson Dyna Street Bob.
Engine Mechanical:
Engine assembly, disassembly, cylinder heads, pistons, rings, crankshaft, connecting rods, camshafts, valvetrain, oil pump, lubrication system.
Engine Fuel System:
Fuel injection system (EFI), throttle body, fuel injectors, fuel pump, fuel filter, fuel lines, evaporative emissions control (EVAP).
Ignition System:
Ignition coils, spark plugs, crank position sensor, ignition control module.
Exhaust System:
Exhaust pipes, mufflers, catalytic converter (if applicable), exhaust gaskets.
Transmission:
Clutch operation, primary drive, transmission gears, shift mechanism, final drive (belt drive), transmission lubrication.
Electrical System:
Battery, charging system (stator, regulator/rectifier), starter motor, lighting system (headlight, taillight, turn signals), ignition switch, main breaker, fuses, wiring diagrams, diagnostic codes (DTCs).
Chassis Frame:
Frame inspection, steering head bearings, swingarm, wheel bearings.
Suspension Front:
Front fork assembly, fork oil, fork seals, springs, damping adjustments.
Suspension Rear:
Rear shock absorbers, suspension linkages (if applicable), adjustment procedures.
Braking System:
Front and rear brake calipers, brake master cylinders, brake lines, brake pads, brake fluid, bleeding procedures, ABS system (if equipped).
Wheels Tires:
Wheel removal and installation, tire types, tire pressures, wheel balancing.
Bodywork:
Fenders, fuel tank removal/installation, seat, handlebars, controls, cables, electrical components mounting.
Diagnostics Troubleshooting:
Diagnostic trouble codes (DTCs), common faults and their solutions, diagnostic procedures for all major systems.
Scheduled Maintenance:
Oil changes, filter replacements, spark plug changes, drive belt inspection and adjustment, brake fluid flush, fork oil change, battery checks.
Major Repairs:
Engine rebuilds, transmission overhauls, suspension component replacement, brake system repairs.
Component Replacement:
Clutch replacement, starter motor replacement, regulator/rectifier replacement, wheel bearing replacement.
Troubleshooting Guides:
Step-by-step diagnostic procedures for electrical and mechanical issues.
Wiring Diagrams:
Complete and detailed electrical schematics for all models covered.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds. Includes detailed diagnostic procedures and specifications.
Engine Family:
Harley-Davidson Twin Cam 103
Engine Type:
Air-cooled, V-twin
Bore X Stroke Mm:
3.875 in. x 4.427 in. (98.4 mm x 112.5 mm)
Valvetrain:
Overhead valves (OHV), 2 valves per cylinder, pushrod actuated.
Horsepower Hp:
Approx. 70-75 HP (estimated, dependent on model year and tuning).
Torque Lb-Ft:
Approx. 96-100 lb-ft @ 3000 RPM (estimated, dependent on model year and tuning).
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 91 octane (R+M)/2
Fuel Tank Capacity Liters:
18.9 (5.0 US gal)
Initial Service Km Miles:
1000 (600 miles)
Oil Change Interval Km Miles:
8000 (5000 miles) or annually, whichever comes first.
Primary Chain Case Oil Change Km Miles:
8000 (5000 miles) or annually.
Transmission Oil Change Km Miles:
8000 (5000 miles) or annually.
Spark Plug Replacement Km Miles:
24000 (15000 miles)
Drive Belt Inspection Km Miles:
8000 (5000 miles)
Engine Oil Type:
Harley-Davidson SYN3 Full Synthetic Motorcycle Oil (or equivalent 20W-50 synthetic motorcycle oil).
Engine Oil Capacity Liters:
3.7 (3.2 US quarts) with filter change.
Primary Chain Case Oil Type:
Harley-Davidson Formula+ Transmission Lubricant (or equivalent SAE 50 motorcycle transmission oil).
Primary Chain Case Oil Capacity Liters:
1.2 (1.0 US quart).
Transmission Oil Type:
Harley-Davidson Formula+ Transmission Lubricant (or equivalent SAE 50 motorcycle transmission oil).
Transmission Oil Capacity Liters:
1.2 (1.0 US quart).
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid.
Fork Oil Type:
Harley-Davidson Factory Recommended Fork Oil (e.g., Type E or equivalent).
Cam Chain Tensioner Wear:
Hydraulic cam chain tensioners can wear, leading to rattling noises. Replacement with upgraded units is common.
Crank Position Sensor Failure:
Failure can cause intermittent starting issues or stalling. Replacement is typically straightforward.
Regulator Rectifier Failure:
Can lead to charging system issues. Symptoms include a dead battery or erratic electrical behavior.
Drive Belt Sprocket Wear:
The rubber damper on the rear pulley can wear out, causing noise or vibration. Belt tension and alignment are critical.
Brand Origin:
Founded in Milwaukee, Wisconsin, USA, 1903.
Dyna Lineage:
The Dyna platform was introduced in 1991 as a successor to the Sturgis model and evolution from the Softail family, featuring a rubber-mounted engine for reduced vibration.
Street Bob Concept:
The Street Bob model, introduced as the FXDB-I in 2006, offered a more minimalist, 'bobbed' style compared to other Dynas, featuring a solo seat, smaller fender, and typically blacked-out components.
Twin Cam Era:
The Twin Cam engine, introduced in 1999, powered Harley-Davidson models through the early 2000s, with the Twin Cam 103 becoming a significant upgrade for performance and torque, particularly in the Dyna and Softail lines from 2007 onwards.
Platform Discontinuation:
The Dyna platform was discontinued after the 2017 model year, with its role largely absorbed by the redesigned Softail lineup for 2018.
