Engine Mechanical:
Engine assembly/disassembly, cylinder heads, valves, pistons, connecting rods, crankshaft, camshafts, oil pump, timing.
Engine Fuel System:
Carburetor(s) (Keihin CV), fuel tank, fuel lines, fuel pump, fuel filter.
Ignition System:
Ignition module, spark plugs, ignition coil, wiring, timing.
Transmission And Drivetrain:
Clutch, primary drive, gearbox, shift mechanism, final drive belt, pulleys.
Electrical System:
Battery, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), lighting (headlight, tail light, turn signals), ignition switch, fuses, relays, horn.
Suspension:
Front forks (assembly, seals, oil), rear shock absorbers, mounting hardware.
Steering:
Handlebars, risers, steering head bearings (adjustment, replacement).
Brakes:
Front and rear disc brakes, brake calipers, master cylinders, brake lines, brake pads, brake fluid specifications and bleeding procedures.
Wheels And Tires:
Wheel bearings, tire pressure, tire replacement, wheel balancing.
Chassis And Frame:
Frame inspection, engine mounting, body panels, fenders, seats, fuel tank mounting.
Exhaust System:
Exhaust pipes, mufflers, heat shields, mounting.
Tune Up:
Spark plug replacement, carburetor adjustment, ignition timing check.
Engine Rebuild:
Complete top-end and bottom-end rebuild procedures, torque specifications for all fasteners.
Transmission Overhaul:
Gearbox disassembly, inspection of gears and bearings, reassembly.
Electrical Troubleshooting:
Diagnostic steps for common electrical faults, testing procedures for components.
Fork Seal Replacement:
Detailed step-by-step guide for front fork disassembly and seal replacement.
Brake Bleeding:
Proper procedures for bleeding hydraulic brake systems.
Carburetor Rebuild And Adjustment:
Jetting information, float level adjustment, idle mixture settings.
Clutch Adjustment And Replacement:
Clutch cable adjustment, primary chain adjustment, clutch plate replacement.
Wheel Bearing Replacement:
Procedure for repacking and replacing wheel bearings.
Diagnostic Procedures:
Systematic troubleshooting flowcharts and fault code interpretation (if applicable).
Depth:
Comprehensive, covering routine maintenance to complete engine and transmission rebuilds. Suitable for experienced DIY mechanics and professional technicians.
Engine Family:
Evolution (Evo) V-Twin
Displacement Cc:
88 cubic inches (1449 cc) - Common for XLH models of this era, though a 1200cc variant also existed.
Bore X Stroke In:
3.437 in x 3.968 in (87.3 mm x 100.5 mm) for 1449cc
Compression Ratio:
9.0:1 (typical for this engine)
Engine Configuration:
Air-cooled, 45-degree V-twin
Valve Train:
Overhead valves (OHV), pushrod actuated
Horsepower Hp:
Approximately 65-70 HP (estimated, depending on tuning and specific model variant)
Torque Lb Ft:
Approximately 75-80 lb-ft (estimated, depending on tuning and specific model variant)
Fuel Delivery:
Carburetor (Keihin CV 40mm)
Fuel Type:
Unleaded gasoline, minimum 87 octane
First Service:
1000 miles (1600 km) - Oil change, primary chain adjustment, inspection of critical fasteners, brake check.
Subsequent Services:
Every 5000 miles (8000 km) or annually - Oil change, primary chain adjustment, spark plug inspection/replacement, drive belt check, brake fluid check, general inspection.
Major Service:
Refer to manual for specific mileage/time intervals for valve adjustments, fork oil changes, and brake fluid replacement.
Engine Oil Type:
Harley-Davidson SYN3 (Synthetic) 20W-50 or equivalent motorcycle-specific SAE 20W-50 oil meeting Harley-Davidson specifications.
Engine Oil Capacity Qt:
Approximately 3.0 US quarts (2.8 L) with filter change.
Primary Chain Case Oil Type:
Harley-Davidson Primary Chaincase Lubricant or equivalent motorcycle-specific primary lubricant.
Primary Chain Case Oil Capacity Qt:
Approximately 1.0 US quart (0.95 L).
Transmission Oil Type:
Harley-Davidson Transmission and Primary Chaincase Lubricant or equivalent motorcycle-specific transmission fluid (e.g., SAE 80W-90 gear oil).
Transmission Oil Capacity Qt:
Approximately 0.8 US quarts (0.75 L).
Brake Fluid Type:
DOT 4 specification hydraulic fluid.
Fork Oil Type:
Refer to manual, typically SAE 10W or 15W fork oil.
Common Wear Items:
Clutch plates, brake pads, tires, drive belt, wheel bearings, fork seals.
Potential Electrical Issues:
Wiring harness degradation, regulator/rectifier failures, battery terminal corrosion (common on many motorcycles of this era).
Carburetor Tuning:
CV carburetors can require periodic adjustment for optimal performance and fuel economy.