Target Audience:
DIY motorcycle owners, home mechanics, professional technicians, and restoration enthusiasts.
Value Proposition:
Provides professional-grade repair and maintenance information at a fraction of the cost of dealership service, empowering owners to perform their own work.
Manual Attribute 1:
Factory-level detail and accuracy.
Manual Attribute 2:
Comprehensive troubleshooting assistance.
Manual Attribute 3:
Clear, step-by-step instructions with illustrations.
Manual Attribute 4:
Instant digital access and storage flexibility.
Service Scope:
Comprehensive service, repair, restoration, maintenance, and troubleshooting for the 1979 Harley-Davidson XLH and XLCH 1000 motorcycles.
Manual Classification:
Service Manual / Workshop Manual / Repair Guide / Factory Manual
Language Of Manual:
English
Delivery Format:
PDF Download (potentially zipped/rar)
Engine Systems:
Engine disassembly, assembly, tuning, carburetor (CV & other variants), ignition system, lubrication system, cooling system (air).
Transmission Systems:
Gearbox disassembly, assembly, shifting mechanisms, clutch operation, lubrication.
Electrical Systems:
Wiring diagrams, lighting, ignition coils, starter motor, battery, charging system, switches, controls.
Chassis Systems:
Frame, suspension (front forks, rear shocks), wheels, tires, brakes (front & rear), steering head, swingarm.
Miscellaneous Systems:
Bodywork, fuel tank, seat, fenders, exhaust system, controls (throttle, clutch, brake levers), instrument cluster.
Maintenance Procedures:
Oil changes, filter replacement, chain adjustment, spark plug maintenance, brake adjustments, lubrication points.
Repair Procedures:
Engine rebuilding, gearbox overhauls, carburetor rebuilding, electrical component replacement, brake system repairs, suspension component replacement.
Troubleshooting Guides:
Step-by-step diagnostic procedures for common and uncommon issues, including starting problems, running issues, electrical faults, and performance issues.
Diagnostic Capabilities:
Advanced diagnostics, component testing, and fault identification for all major motorcycle systems.
Rebuild Complexity:
Detailed instructions for complete engine and transmission rebuilds, including torque specifications and assembly sequences.
Restoration Guidance:
Information pertinent to restoring the motorcycle to original specifications, including component identification and service details.
File Compression:
May be zipped (.zip, .rar)
Printable Pages:
Yes, printable on any computer and printer.
Image Quality:
Illustrated with clear step-by-step instructions, zoomable illustrations, and exploded views.
Binding:
N/A (Digital Download)
Paper Quality:
N/A (Digital Download)
Engine Name:
Shovelhead Evolution (early variant)
Bore X Stroke:
3.1875 in. x 3.875 in. (81 mm x 98.4 mm) - Approximate for 1000cc
Compression Ratio:
Approx. 8.0:1 (varies by specific model/tune)
Valve Train:
OHV (Overhead Valve), 2 Valves per Cylinder
Horsepower Approximate:
Approx. 60-65 HP @ 6000 RPM
Torque Approximate:
Approx. 70-75 ft-lbs @ 3500 RPM
Carburetor Type:
Typically Keihin butterfly (CV) or Linkert, depending on specific sub-model and market.
Fuel Type:
Unleaded gasoline (minimum 87 octane recommended, higher if available/specified).
Fuel Tank Capacity:
Typically 2.0 - 2.5 Gallons (7.6 - 9.5 Liters)
Safety Standards:
As per relevant national motorcycle safety regulations of the era; no standardized crash ratings like modern cars.
Braking System:
Front: Hydraulic Disc; Rear: Drum Brake (typically)
Lighting System:
Headlight, Taillight, Stop Light, Turn Signals (if equipped), Brake Light.
Oil Change Interval:
Typically every 2,000-3,000 miles or annually. Check manual for exact mileage.
Primary Chain Tension Check:
Check at every oil change or every 1,000 miles.
Spark Plug Replacement Interval:
Typically every 5,000-7,500 miles, or as needed based on condition.
Engine Oil Type:
Harley-Davidson recommended 20W50 motorcycle oil (or equivalent).
Engine Oil Capacity:
Approx. 3 quarts (2.8 Liters).
Transmission Oil Type:
Harley-Davidson recommended transmission lubricant (e.g., Syn3 or equivalent).
Transmission Oil Capacity:
Approx. 1 quart (0.95 Liters).
Primary Chain Case Oil Type:
Harley-Davidson primary lubricant or SAE 50 motorcycle oil.
Primary Chain Case Oil Capacity:
Approx. 1 quart (0.95 Liters).
Ironhead Common Issues 1:
Oil leaks (common with older Harleys), primary chain adjustment and wear, carburetor tuning issues, ignition system reliability.
Ironhead Common Issues 2:
Pushrod tube seals, valve seat wear, exhaust flange leaks.
Manufacturer History:
Harley-Davidson, established in 1903, is one of the oldest motorcycle manufacturers in the world, known for its iconic American motorcycles.
Sportster Lineage:
The Sportster line, introduced in 1957, is Harley-Davidson's longest-running model family, evolving from the K Model. The 1000cc Ironhead engine variant was a significant development.
Production Period Engine:
The Ironhead Sportster engine was produced from 1957 through 1985.
