Engine Mechanical:
Detailed breakdown and assembly of Twin Cam 88 EFI engine (carburetor and fuel injection specifics for FXDLI), including cylinders, pistons, crankshaft, camshafts, valves, and timing.
Engine Management:
Coverage of the Electronic Fuel Injection (EFI) system, including sensors (MAP, TPS, IAT, O2), fuel pump, injectors, throttle body, ECM (Engine Control Module) operation, and diagnostic trouble codes (DTCs).
Transmission Drivetrain:
Complete service and repair of the 5-speed Cruise Drive transmission, including clutch assembly, gear sets, bearings, seals, and shift mechanism. Also covers final drive belt and sprocket maintenance.
Electrical Charging Starting:
Detailed troubleshooting and repair of the charging system (stator, regulator/rectifier) and starting system (starter motor, solenoid, battery).
Ignition System:
Information on the electronic ignition system, including spark plugs, ignition coils, and related wiring.
Lighting Accessories:
Coverage of headlights, tail lights, turn signals, brake lights, horn, and accessory electrical circuits.
Fuel Delivery:
In-depth coverage of the fuel tank, fuel pump, fuel lines, fuel filter, and EFI injectors.
Exhaust System:
Details on exhaust components, including mufflers, head pipes, and mounting hardware.
Brake System:
Service and overhaul procedures for front and rear hydraulic disc brakes, including caliper disassembly/rebuild, master cylinder service, brake pad replacement, and bleeding procedures.
Suspension Steering:
Front fork (Telescopic) overhaul, fork seal replacement, oil levels, and rear shock absorber service and adjustment. Also covers steering head bearing maintenance.
Wheels Tires:
Information on wheel bearing service, tire inspection, and replacement.
Frame Chassis:
Inspection and maintenance of the frame and swingarm assembly.
Body Panels Fenders:
Removal, installation, and repair of fuel tank, fenders, side covers, and seat.
Instrumentation Gauges:
Service and troubleshooting for the speedometer, tachometer, and indicator lights.
Routine Maintenance:
Oil changes, filter replacements (oil, air, fuel), spark plug replacement, lubrication, belt tension checks, and brake system inspections.
Engine Rebuild:
Complete disassembly, inspection, measurement, and reassembly of the Twin Cam 88 EFI engine.
Transmission Overhaul:
Detailed steps for clutch replacement, gearbox disassembly and reassembly, and bearing replacement.
Efi Diagnosis Adjustment:
Troubleshooting EFI system faults, checking sensor data, and potential minor adjustments.
Brake System Service:
Calipers, master cylinder, and brake line servicing, including bleeding procedures.
Suspension Fork Rebuild:
Complete fork seal replacement and oil level service.
Electrical Troubleshooting:
Systematic diagnostic procedures for electrical faults using wiring diagrams.
Wiring Diagrams Interpretation:
Clear and detailed electrical schematics for all vehicle systems.
Component Replacement:
Step-by-step guides for replacing common wear items and major components.
Torque Specifications:
Essential torque values for all critical fasteners throughout the motorcycle.
Depth:
Comprehensive, covering everything from basic rider maintenance to full engine and transmission rebuilds. Assumes a qualified technician with general mechanical knowledge.
Engine Family:
Harley-Davidson Twin Cam 88
Engine Configuration:
Air-cooled, 45-degree V-twin
Displacement:
1450cc (88 cubic inches)
Bore X Stroke:
3.75 in. x 4.00 in. (95.25 mm x 101.6 mm)
Compression Ratio:
8.8:1 (Typical for Twin Cam 88)
Valve Train:
Overhead valves (OHV), 2 valves per cylinder
Camshafts:
Single camshaft, chain-driven
Horsepower:
Approximately 65-70 HP (estimated, varies by exhaust/tuning)
Torque:
Approximately 85-90 ft-lbs (estimated, varies by exhaust/tuning)
Fuel Delivery:
Electronic Fuel Injection (EFI) with single throttle body and Bosch injectors
Fuel Type:
Unleaded gasoline, minimum 87 octane
Fuel Tank Capacity:
4.8 US gallons (18.2 L)
First Service:
1,000 miles (1,600 km) or 6 months
Subsequent Service:
Every 5,000 miles (8,000 km) or 12 months thereafter
Engine Oil:
Harley-Davidson 20W-50 SYN3 (or equivalent API SG, Jaso MA)
Engine Oil Capacity:
3.0 US quarts (2.8 L) with filter change
Transmission Fluid:
Harley-Davidson SYN3 or equivalent
Primary Chain Case Fluid:
Harley-Davidson Primary Chain Lubricant or SYN3
Brake Fluid:
DOT 4 (refer to specific model year for potential exceptions, though 2005 typically uses DOT 4)
Fork Oil:
Harley-Davidson Motorcycle Fork Oil (specific weight detailed in manual, often 15W)
Cam Chain Tensioner Wear:
Early Twin Cam models (pre-2007) can experience wear on the hydraulic cam chain tensioners, potentially leading to noise or failure. The manual will detail inspection and replacement procedures.
Regulator Rectifier:
Some early Twin Cam models had less robust regulator/rectifier units that could fail, leading to charging issues. The manual provides troubleshooting for this.
Primary Drive Bearing:
Potential for wear in the primary drive bearing can manifest as noise. The manual covers inspection and replacement.