Motorcycle Segment:
Full-size touring motorcycle.
Target Audience:
Harley-Davidson Softail owners, independent motorcycle mechanics, and enthusiast DIYers.
Competitors 2006:
Other large displacement touring motorcycles from American manufacturers and some European brands.
Distinctive Features:
Road Glide fairing design, Softail chassis, Twin Cam engine, emphasis on long-distance touring comfort.
Why This Manual:
Essential for maintaining, diagnosing, and repairing the 2006 FLTRI Road Glide to factory specifications, ensuring optimal performance and longevity.
Engine:
1450cc (88 cubic inch) Twin Cam 88B engine disassembly, assembly, inspection, and troubleshooting.
Fuel System:
Carburetor (CV type), fuel injection (EFI systems), fuel pump, fuel filter, and fuel tank.
Ignition System:
Ignition module, spark plugs, ignition coils, wiring, and troubleshooting.
Transmission:
5-speed constant mesh transmission, clutch assembly, primary drive, and drive belt maintenance.
Electrical System:
Battery, charging system (alternator, regulator), starting system (starter motor), lighting (headlight, taillight, signals), instruments, horn, and related wiring diagrams.
Frame And Suspension:
Frame inspection and repair, front fork (tele-glide), rear shock absorbers, swingarm, and wheel bearings.
Braking System:
Front and rear brake calipers, master cylinders, brake lines, brake pads, rotors, and bleeding procedures.
Wheels And Tires:
Wheel removal and installation, tire mounting and balancing, spoke inspection.
Bodywork And Fairings:
Fairing removal and installation, saddlebags, fenders, fuel tank, and seat.
Controls:
Handlebar, controls, cables, and linkages.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain/belt adjustments, brake checks, and lubrication.
Troubleshooting:
Diagnostic charts, common problems and their solutions, symptom-based troubleshooting.
Repair:
Detailed step-by-step instructions for disassembly, repair, and reassembly of all major components.
Rebuilds:
Engine and transmission rebuilding procedures, including component tolerances and specifications.
Wiring Diagrams:
Comprehensive color-coded wiring diagrams for all electrical systems.
Diagnostic Capabilities:
Advanced diagnostics for EFI and electrical systems, including sensor readings and fault code interpretation (where applicable).
Torque Specifications:
Detailed torque specifications for all critical fasteners.
Clearances And Tolerances:
Precise specifications for component clearances and wear limits.
Special Tools:
Identification and usage instructions for Harley-Davidson specific tools.
Engine Family:
Twin Cam 88B
Displacement:
1450 cc (88 cubic inches)
Configuration:
Air-cooled, 45-degree V-twin
Bore X Stroke:
3.75 in x 4.00 in (95.25 mm x 101.6 mm)
Valve Train:
Overhead valves (OHV), 2 valves per cylinder, pushrod actuated.
Cooling System:
Air-cooled
Horsepower Est:
Approximately 60-65 HP (at crankshaft, unconfirmed)
Torque Est:
Approximately 75-80 lb-ft (at crankshaft, unconfirmed)
Fuel Delivery System Fltri:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 89 octane (USA)
Oil Type:
Harley-Davidson recommended V-Twin specific 20W-50 synthetic motorcycle oil.
Oil Capacity W Filter Change:
3.0 US quarts (2.8 Liters)
Transmission Type:
5-Speed Cruise Drive
Gear Ratios:
1st: 9.270, 2nd: 6.450, 3rd: 4.750, 4th: 3.750, 5th: 3.150 (typical for this era, confirm in manual)
Primary Drive:
Duplex chain, compensator sprocket, and clutch
Final Drive:
Belt drive, 32 tooth front pulley, 66 tooth rear pulley (typical, confirm)
Clutch Type:
Wet, multi-plate
Transmission Oil Type:
Harley-Davidson Genuine Formula Transmission and Primary Chain Case Lubricant or equivalent.
Transmission Oil Capacity:
24 US fluid ounces (0.71 Liters)
Safety Standards:
Adheres to DOT and relevant motorcycle safety regulations for its production year.
Braking System Type:
Dual disc front, single disc rear, hydraulic actuation.
Anti Lock Braking System ABS:
ABS was an optional feature on the 2006 FLTRI. Confirm if the specific model is equipped.
Lighting:
Halogen headlight, LED taillight, amber turn signals.
Chassis Stability:
Softail frame provides a rigid platform, contributing to stability.
Initial Service:
500 miles (800 km) - includes engine oil change, primary chain case oil change, inspection of all fasteners, controls, and brake systems.
Routine Maintenance:
Every 5,000 miles (8,000 km) or annually: engine oil and filter change, check primary chain tension, inspect brake pads and fluid, check tire pressure and wear, lubricate pivot points.
Transmission Service:
Every 10,000 miles (16,000 km) or every two years: change transmission and primary chain case lubricant.
Belt Drive Inspection:
Inspect belt for wear and alignment every 5,000 miles. Check tension according to manual specifications.
Engine Oil Specification:
Harley-Davidson V-Twin Synthetic 20W-50
Primary Oil Specification:
Harley-Davidson Genuine Formula Transmission and Primary Chain Case Lubricant
Transmission Oil Specification:
Harley-Davidson Genuine Formula Transmission and Primary Chain Case Lubricant
Brake Fluid Specification:
DOT 4 brake fluid
Cam Chain Tensioners:
Early Twin Cam 88 engines (prior to some 2002 models) had issues with hydraulic cam chain tensioners. The 2006 model typically uses updated internal spring-loaded tensioners or has been retrofitted.
Oil Leaks:
Common areas for leaks can include primary gasket, transmission seals, and rocker box gaskets. Manual will detail inspection and sealing procedures.
Idle Control Module Ics:
Some EFI models can experience idle issues. Manual will cover diagnostics for the Idle Speed Control (ISC) motor and related components.
Harley Davidson Legacy:
Over a century of motorcycle manufacturing, known for iconic V-twin engines and touring capabilities.
Softail Platform:
The Softail line, introduced in 1984, features a hidden rear suspension to mimic the appearance of a hardtail frame.
Road Glide Introduction:
The Road Glide styling, characterized by its frame-mounted fairing, was introduced earlier in Harley-Davidson's history and has been a popular touring model.
Twin Cam 88 Era:
The Twin Cam 88 engine, introduced in 1999, replaced the Evolution engine, offering increased displacement and improved performance.
Production Location:
York, Pennsylvania, USA and Milwaukee, Wisconsin, USA.