Model Codes:
XS1100 (various sub-models likely exist, e.g., Standard, Special, Midnight Special)
Generation Designation:
First Generation
Engine Code:
Likely a designation specific to the 1100cc DOHC inline-four engine, e.g., 2H1, 3X5, etc. (specific codes not provided but are common in Yamaha manuals)
Market Segment:
High-performance Japanese motorcycle of its era, known for its large displacement inline-four engine and powerful performance, often competing with European litre-bikes.
Competitors:
Honda CB900F/CB1100F, Kawasaki KZ1000/KZ1100, Suzuki GS1000/GS1100.
Engine Configuration:
1077cc DOHC inline-four engine, shaft drive, providing strong torque and comfortable cruising capability.
Design Philosophy:
Yamaha's approach to a large-displacement, performance-oriented motorcycle designed for both touring and spirited riding.
Engine:
Complete engine disassembly, assembly, inspection, repair, tuning, and troubleshooting. Includes cylinder head, valves, pistons, crankshaft, lubrication system, cooling (if applicable), and timing.
Fuel System:
Carburetor (likely Mikuni VM series) overhaul, adjustment, synchronization, fuel pump, fuel lines, and fuel tank maintenance.
Transmission:
Gearbox disassembly, inspection, assembly, troubleshooting, and related components.
Drivetrain:
Shaft drive system maintenance, inspection, and overhaul.
Chassis And Frame:
Frame inspection, front fork, rear suspension (shocks/swingarm), steering head bearings, and wheel bearings.
Brakes:
Hydraulic disc brake system maintenance, caliper overhaul, master cylinder, brake fluid replacement, and bleeding procedures.
Electrical System:
Ignition system (CDI, coils, spark plugs), charging system (stator, rectifier/regulator, battery), lighting, starter motor, and wiring diagrams.
Bodywork And Fittings:
Fuel tank, seat, fenders, side covers, exhaust system, and handle-bar assembly.
Maintenance:
Routine checks, lubrication, filter changes, fluid changes, spark plug service, and general tune-up procedures.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon problems, symptom-based fault finding.
Repair And Overhaul:
Detailed step-by-step instructions for component removal, disassembly, inspection, repair, assembly, and installation.
Adjustments:
Carburetor synchronization, ignition timing, valve clearance, brake lever free play, and clutch adjustment.
Special Tools:
Identification and usage instructions for specialized tools required for specific repair operations.
Depth:
Comprehensive, covering everything from basic maintenance and adjustments to complete engine and transmission rebuilds. Includes diagnostic information and specifications.
Searchability:
Likely text-searchable (common for modern PDF manuals), enhancing usability.
Printability:
Yes, all pages are printable, allowing for hard copies.
Binding Type:
Digital (Instant Download PDF, not physically bound).
Paper Type:
Not applicable (digital format).
Operating Systems:
Windows, Mac, Linux OS compatible.
Software Requirement:
Adobe Reader (or compatible PDF viewer).
Engine Type:
Four-stroke, air-cooled, DOHC inline-four
Displacement:
1077 cc (65.7 cu in)
Bore X Stroke:
72.0 mm x 66.0 mm (2.83 in x 2.60 in) - typical for this model
Compression Ratio:
Approximately 8.8:1 to 9.2:1 depending on specific sub-model and year
Horsepower:
Approximately 85-95 hp @ 7,500-8,000 rpm (estimated, actual figures vary by dyno and test conditions)
Torque:
Approximately 65-70 lb-ft @ 6,000 rpm (estimated)
Carburetion:
Four Mikuni VM29 (or similar) constant velocity carburetors. Specific jetting and settings are detailed in the manual.
Oil Capacity:
Approximately 4.0-4.5 liters (4.2-4.8 US qt) with filter change. Specific oil type and grade are crucial and found in the manual.
Overall Length:
Varies by sub-model (e.g., Standard, Special), but generally around 2200-2300 mm (86.6-90.6 inches).
Overall Width:
Varies, around 800-850 mm (31.5-33.5 inches).
Overall Height:
Varies, typically around 1200-1300 mm (47.2-51.2 inches).
Dry Weight:
Around 240-260 kg (529-573 lbs), depending on model and equipment.
Wet Weight:
Approximately 260-280 kg (573-617 lbs) with all fluids.
Safety Ratings:
Not applicable to motorcycles in the same way as cars. Focus is on design integrity and rider safety features.
Active Safety:
Effective dual front disc brakes, reliable rear disc brake, stable chassis geometry, and well-balanced weight distribution.
Passive Safety:
Sturdy frame construction, robust suspension components. Emphasis on rider skill and adherence to safe operating procedures.
Infotainment System:
Not applicable. This era of motorcycle featured analog instrumentation (speedometer, tachometer, fuel gauge, warning lights).
Driver Assistance Features:
Not applicable. Rider is responsible for all control and awareness.
Connectivity Features:
Not applicable. Primarily mechanical and electrical systems.
Ignition System:
Transistor Controlled Ignition (TCI) with dual spark plugs per cylinder for improved combustion efficiency.
Charging System:
AC generator (stator) with a transistorized voltage regulator/rectifier.
Oil Change Interval:
Typically every 3,000-5,000 km (1,800-3,000 miles) or annually. Refer to the manual for precise intervals and conditions.
Valve Clearance Interval:
Generally every 10,000-20,000 km (6,000-12,000 miles). Crucial for performance and engine longevity, detailed procedure in the manual.
Spark Plug Replacement:
Recommended at intervals specified in the manual, often tied to general tune-ups (e.g., every 10,000 km).
Engine Oil:
Yamaha typically recommended SAE 20W-40 or 10W-40 motorcycle-specific oil. The manual will specify exact grades and API service classifications.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid. Manual will confirm specific type and replacement intervals.
Gearbox Oil:
Yamalube Gear Oil (or equivalent SAE 80W/90 gear oil) for the final drive unit. Manual specifies type and capacity.
Common Issues:
Potential for wear in valve guides, cam chains, and drive shafts. Carburetor synchronization can be finicky. Electrical connectors can corrode over time. Early models might have CDI unit issues.
Maintenance Focus:
Regular and thorough maintenance is key to keeping the XS Eleven reliable. Adherence to the manual's service schedule is paramount.
Yamaha Motorcycles:
Yamaha Motor Corporation has a rich history in motorcycle design and racing, dating back to the early 1950s, known for innovation and performance.
Xs Eleven Evolution:
The XS Eleven was Yamaha's flagship large-displacement motorcycle of the late 1970s, representing their entry into the high-performance 'superbike' class, evolving from earlier XS models.
Production Years:
Generally produced from 1978 to 1981/1982, with minor variations and sub-models (Standard, Special, Midnight Special) introduced during its run.
Manufacturing Location:
Japan
Motorcycle Awards:
While specific 'awards' are rare for individual motorcycle models from this era, the XS Eleven was highly regarded in motorcycle press for its performance, comfort, and handling in its class, often receiving positive reviews and comparisons.
Performance Ratings:
Consistently rated as a top-performing large-displacement motorcycle of its time, praised for its power delivery and long-distance touring capability.
