Yamaha XS1100H, XS1100SH Eleven - Motorcycle Owner's Operation & Maintenance Manual, 1981

Yamaha XS1100H & XS1100SH Eleven - Ultimate Motorcycle Owner's Operation & Maintenance Guide (1981)

Rev up your ownership experience with the definitive guide for the 1981 Yamaha XS Eleven series. This manual is an essential tool for any rider looking to maintain the legendary reliability and craftsmanship of the XS1100H and the XS1100SH Eleven Special. Whether you are navigating the open road on the standard touring model or cruising on the custom-styled Special, this manual provides the technical depth needed to keep your machine in peak condition.

Models Covered

This guide is specifically tailored for the 1981 model year, focusing on the distinct hardware of the XS Eleven series:

• Yamaha XS1100H Eleven (1981): The classic high-capacity tourer featuring a massive 6.3 US gallon (24 liter) fuel tank and a factory-equipped oil cooler for long-distance endurance.
• Yamaha XS1100SH Eleven Special (1981): The sleek, custom-style variant with a 4.0 US gallon (15 liter) tank, unique lighting configurations, and specialized trim.

Precise Machine Identification

For ordering the correct parts or registering your vehicle, this manual shows you exactly where to find your unique identifiers:

• Frame Serial Number: Stamped on the right side of the steering head pipe.
• Engine Serial Number: Located on the elevated part of the right rear section of the engine.
• Model Codes: The first three digits of these numbers identify your specific model (4R1 for the XS1100H and 4R0 for the XS1100SH).

Technical Features & Maintenance Highlights

Get under the skin of your Yamaha with detailed specifications and procedures:

• Pneumomechanical Suspension: Step-by-step instructions for adjusting the front fork air pressure (up to 36 psi) and rear shock damping to match your load, whether riding solo or with a passenger.
• Shaft Drive Maintenance: Critical data for the middle and final gear oil changes using SAE 80 API "GL-4" Hypoid gear oil.
• Advanced Braking: Complete guide for the triple-disc system, including wear indicator checks and the recommended DOT #3 fluid specifications.
• Electrical & Wiring: Includes comprehensive wiring diagrams and fuse location guides (Main fuse 30A) to troubleshoot your lighting and ignition systems.
• Quartz Headlight Care: Specific instructions for replacing and aligning the 12V 60W/55W quartz bulb without damaging the sensitive glass.

Why This Manual is Essential

Owning a vintage "Eleven" means taking responsibility for its longevity. This manual eliminates the guesswork, providing the exact torque specifications (like the 77.5 ft-lb for the front axle) and fluid capacities (3.7 US qt for an oil change with filter) required to prevent mechanical failure. It guides you through the 1,000 km (600 mi) break-in period and beyond, ensuring that your DOHC 4-cylinder engine continues to deliver its legendary power safely and efficiently.

Practical Benefits for the Owner

• Safety First: Detailed pre-operation checklists to identify potential hazards like spongy brakes or low oil pressure before you hit the road.
• Save on Repairs: Perform your own periodic maintenance—from air filter cleaning to spark plug gapping (0.7~0.8 mm)—using the included tool kit guide.
• Optimize Performance: Use the recommended shift point charts and suspension combination tables to tailor the bike’s handling to your specific riding style.

Empower yourself with the knowledge to maintain your 1981 Yamaha XS Eleven. This manual isn't just a book; it’s a blueprint for a safer, smoother, and more rewarding ride.