Engine Mechanical:
Cylinder heads, cylinders, pistons, connecting rods, crankshaft, camshafts, valve train, timing, lubrication system, cooling system (air-cooled components)
Fuel System:
Carburetor(s) (CV Carburetor), fuel injection (if applicable for specific sub-models), fuel tank, fuel pump, fuel lines, fuel filter
Ignition System:
Ignition module, spark plugs, ignition coils, ignition timing, sensors (e.g., Crankshaft Position Sensor)
Transmission Drivetrain:
Clutch, primary drive, transmission gears, shift mechanism, final drive (belt drive), countershaft, mainshaft, bearings, seals
Chassis Frame:
Frame construction, steering head, swingarm, rear suspension (shocks, linkages), front suspension (forks, triple trees), wheel bearings
Brakes:
Front brake caliper, rotors, master cylinder, brake lines, rear brake caliper, master cylinder, brake lines, parking brake (if applicable)
Electrical System:
Battery, charging system (stator, regulator/rectifier), starter motor, lighting (headlights, tail lights, turn signals), horn, wiring diagrams, fuses, relays, switches, instruments (speedometer, tachometer)
Body And Trim:
Fenders, fuel tank, seat, handlebars, controls, mirrors, exhaust system, side covers, fairings (if applicable), saddlebags
Routine Maintenance:
Oil changes, filter replacement, chain/belt adjustment, tire pressure checks, lubrication points, brake fluid checks
Engine Repair:
Top-end rebuilds, bottom-end overhauls, valve adjustments, timing chain/belt replacement, carburetor rebuilding/tuning, fuel injection diagnostics and repair
Transmission Repair:
Clutch service, transmission disassembly and assembly, gear inspection and replacement, final drive maintenance and adjustment
Suspension And Steering:
Fork seal replacement, shock absorber replacement, steering head bearing adjustment/replacement
Brake System Service:
Brake pad replacement, caliper service, master cylinder overhaul, brake fluid flush and bleed
Electrical Troubleshooting:
Wiring diagram interpretation, diagnostic procedures for charging system, ignition system, starting system, lighting, and accessories
Bodywork And Trim Service:
Removal and installation of body panels, fuel tank, seat, exhaust, and other cosmetic components
Troubleshooting Guides:
Common problems and their solutions, diagnostic flowcharts
Depth:
Comprehensive diagnostic and repair procedures, including complete engine and transmission overhauls, electrical system troubleshooting, and chassis component service.
Engine Type:
Harley-Davidson Twin Cam 88
Engine Displacement:
1450cc (88 cubic inches)
Engine Configuration:
Air-cooled, 45-degree V-twin
Bore X Stroke:
3.75 in. x 4.00 in. (95.25 mm x 101.6 mm)
Compression Ratio:
8.8:1 (typical)
Horsepower:
Approx. 65-70 HP (at crankshaft, estimated)
Torque:
Approx. 75-80 ft-lbs (at crankshaft, estimated)
Fuel Delivery:
Carbureted (Keihin CV Carburetor) or Electronic Sequential Port Fuel Injection (ESPFI) depending on specific sub-model and year, though carburetors were common for this era FLSTC.
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type:
Harley-Davidson SYN3 (Synthetic) or equivalent V-twin motorcycle oil SAE 20W-50.
Oil Capacity:
Approx. 3.5 US quarts (3.3 liters) with filter change.
Spark Plugs:
Harley-Davidson OEM or equivalent, e.g., NGK DCPR6E
Oil Change Interval:
Every 5,000 miles (8,000 km) or annually, whichever comes first. Refer to manual for specific conditions.
Primary Chain Tensioner Inspection:
Inspect every 10,000 miles (16,000 km). Automatic tensioner update may be required for certain models.
Spark Plug Replacement:
As recommended, typically around 10,000-15,000 miles (16,000-24,000 km) or as per manual. Check spark plug condition at each service.
Brake Fluid Flush:
Every 2 years or as specified by fluid manufacturer. Check fluid level regularly.
Belt Tension Check:
Check belt tension every 5,000 miles (8,000 km) and adjust as needed.
Engine Oil:
Harley-Davidson SYN3 or equivalent SAE 20W-50 motorcycle oil.
Transmission Oil:
Harley-Davidson Formula + Transmission Lubricant.
Primary Chain Case Oil:
Harley-Davidson Formula + Transmission Lubricant.
Brake Fluid:
DOT 5 Silicone Brake Fluid (Harley-Davidson specification for models of this era, although DOT 4 may be used in later models or aftermarket systems).
Common Problems:
Primary chain tensioner wear (especially the older spring-loaded or early automatic tensioners), potential oil leaks from engine seals, carburetor tuning issues, regulator/rectifier failure, fuel line degradation.