Category:
Large displacement Japanese motorcycle, sport-touring/muscle bike segment.
Competitors:
Honda CB900F/CB1100F, Kawasaki KZ1100, Suzuki GS1100E/G.
Engineering:
Innovative for its time, featuring a powerful four-cylinder engine, shaft drive, and advanced (for the era) suspension and braking systems.
Target Audience:
Motorcyclists seeking performance, long-distance comfort, and reliability from a Japanese manufacturer.
Engine:
Engine overhaul, disassembly, assembly, inspection, tuning, troubleshooting, lubrication, cooling system.
Fuel System:
Carburetor service (Mikuni VM series), fuel tank, fuel pump, fuel lines, fuel filter.
Electrical System:
Ignition system, charging system (alternator, regulator/rectifier), starter motor, lighting, wiring diagrams, battery.
Transmission:
Gearbox inspection, disassembly, assembly, shift mechanism, clutch operation.
Drivetrain:
Shaft drive system, universal joints, final drive inspection and maintenance.
Suspension:
Front fork service (telescopic forks), rear shock absorber service, swingarm maintenance, linkage inspection.
Brakes:
Front and rear brake systems (hydraulic), caliper service, master cylinder overhaul, brake fluid replacement, pad replacement.
Chassis:
Frame inspection, steering head bearing service, wheel bearing service, general chassis components.
Bodywork:
Fairing removal/installation, seat, fuel tank, fenders, trim components.
Maintenance:
Routine service tasks, oil changes, filter replacements, spark plug service, chain adjustment (if applicable, though shaft drive), lubrication points.
Troubleshooting:
Diagnostic procedures for common faults, symptom-based troubleshooting guides.
Repair:
Detailed step-by-step repair instructions for all major mechanical and electrical components.
Disassembly Assembly:
Complete breakdown and reassembly instructions for engine, gearbox, suspension, and other major assemblies.
Technical Data Reference:
Specifications, tolerances, torque values, clearances, wiring diagrams.
Depth:
Comprehensive, designed for mechanical technicians, covering detailed diagnostics, repairs, and overhauls.
Engine Type:
Four-stroke, air-cooled, DOHC inline-four.
Displacement:
1097 cc (cubic centimeters).
Bore X Stroke:
71.5 mm x 68.2 mm (typical for XS1100).
Compression Ratio:
9.2:1 (typical for XS1100E).
Horsepower:
Approximately 95 hp (at crankshaft, depending on specific model year and tuning).
Torque:
Approximately 64 ft-lbs (87 Nm) at 6000 rpm (typical for XS1100E).
Carburetors:
Four Mikuni VM Series carburetors, typically 34mm.
Fuel Tank Capacity:
Approximately 5.5 US gallons (21 liters).
Oil Type Specification:
API SE, SF or SG class, SAE 20W-40 or 10W-40 (refer to manual for exact specification).
Cooling Method:
Air-cooled.
Length:
Approximately 2250 mm (88.6 in).
Width:
Approximately 820 mm (32.3 in).
Height:
Approximately 1250 mm (49.2 in).
Dry Weight:
Approximately 245 kg (540 lbs).
Wet Weight:
Approximately 260 kg (573 lbs).
Front Tire Size:
3.50-19 (typical).
Rear Tire Size:
4.50-17 or 4.00-18 (typical, verify with manual).
Wheelbase:
Approximately 1525 mm (60.0 in).
Wheel Type:
Cast alloy or spoke wheels depending on specific XS1100E variant.
Oil Change Interval:
Typically every 2,000-3,000 miles or annually (refer to manual for precise recommendations).
Spark Plug Replacement:
Every 10,000-15,000 miles (refer to manual for exact type and gap).
Valve Clearance Adjustment:
Every 10,000-12,000 miles (critical for engine performance and longevity).
Brake Fluid Type:
DOT 3 or DOT 4 Hydraulic Brake Fluid (refer to manual for exact specification).
Coolant Type:
N/A (Air-cooled engine).
Common Wear Items:
Carburetor synchronization issues, cam chain tensioner wear, aging fuel lines, front fork seal leaks, drive shaft spline wear.
Electrical Reliability:
Older electrical components can degrade; regulator/rectifier units are known failure points on many bikes of this era.
Ignition Timing:
Specific timing advance curves and static timing procedures are detailed in the manual.
Idle Speed:
Typically around 1000-1200 RPM (refer to manual).
Wheel Alignment:
Specific procedures and alignment marks detailed for ensuring correct tracking.
Torque Values:
Comprehensive list of torque specifications for critical fasteners throughout the motorcycle, vital for safe and proper assembly.
Manufacturer Focus:
Yamaha Motor Company, known for its musical instrument heritage and pioneering work in motorcycle engineering.
Predecessors:
Yamaha XS750, XS850 series, which established Yamaha's inline-triple and inline-four platforms.
Successors:
Yamaha XS1100 became a platform for later models like the Virago and Maxim series, influencing Yamaha's large displacement strategy.
Production Period:
1978-1981 for the XS1100E variant, with the broader XS1100 line continuing with variations.
Manufacturing Location:
Japan.
