Target Audience:
Designed as a muscular, stripped-down streetfighter-style V-twin standard for experienced riders
Target Market:
Riders seeking an aggressive, minimal-fairing V-twin with distinctive Buell styling
Competitive Advantage:
Sportster-derived 1200cc V-twin with Buell's unique chassis geometry and low unsprung mass rear wheel design
Key Feature:
Unsprung rear wheel-mounted transmission and oil-in-swingarm design for agile handling
Manual Type:
Complete factory-level service and repair workshop manual
Delivery Method:
Instant download on completion of payment
Printable:
All pages printable - print only what you need and take it into the garage
Coverage Areas:
Diagnostics, repair, maintenance, rebuild, refurbishment and restoration procedures
Illustrations:
Detailed illustrations, diagrams, wiring schematics and specifications throughout
Instruction Style:
Step-by-step instructions for every procedure
Engine:
Complete teardown, inspection, rebuild and reassembly of the 1200cc V-twin engine
Fuel System:
Carburetor and/or fuel injection service, tuning and troubleshooting
Ignition System:
Ignition module, pickup, coil and spark timing diagnostics and repair
Electrical System:
Full wiring schematics, charging system, starting system and lighting circuits
Transmission and Primary Drive:
Clutch, 5-speed gearbox and primary chain service and rebuild
Final Drive:
Belt final drive inspection, adjustment and replacement
Frame and Suspension:
Front forks, rear shock, swingarm and frame inspection and service
Brakes:
Front and rear disc brake service, caliper rebuild and pad replacement
Wheels and Tires:
Three-spoke cast wheel service and tire removal, mounting and balancing
Steering:
Steering head bearings, adjustment and triple clamp service
Exhaust System:
Exhaust header and muffler removal, inspection and installation
Bodywork:
Belly pan, seat and body component removal and installation
Diagnostics:
Complete troubleshooting charts and fault-finding procedures for all systems
Periodic Maintenance:
Full scheduled maintenance charts, service intervals and tune-up procedures
Lubrication:
Lubrication points, fluid capacities and recommended lubricants
Torque Specifications:
Torque values supplied for all major fasteners and assemblies
Special Tools:
Special tool identification and usage where required
Assembly Torque Sequences:
Step-by-step tightening sequences and clearances for rebuilds
Technical Depth and Parts
Technical Depth:
Written at full workshop level - complete disassembly to reassembly, aimed at technicians and DIY owners
Parts Information:
Component identification, exploded views and part specifications to support ordering
Specifications:
Complete engine, chassis and electrical specifications tables included
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
Air-cooled, pushrod 45-degree V-twin (Buell/Sportster 1200-derived)
Displacement:
1200 cc (approximately 73.5 cubic inches)
Bore and Stroke:
Approximately 88.8 mm x 96.8 mm
Valvetrain:
Overhead valves, pushrod-operated, 2 valves per cylinder
Compression Ratio:
Approximately 9.0:1
Fuel System:
CV carburetor
Lubrication:
Dry-sump, oil carried in the swingarm (uniflow oiling design)
Horsepower:
N/A - not specified for this model, verify against factory data
Standard Transmission:
5-speed constant mesh manual gearbox
Transmission Location:
Housed in the rear wheel / swingarm, part of Buell's un sprung mass design
Clutch:
Wet multi-plate clutch
Primary Drive:
Chain primary drive
Final Drive:
Belt final drive
Features:
Manual 5-speed with chain primary and belt final drive for smooth, low-maintenance power delivery
Wheelbase:
Approximately 1,460 mm (57.5 in)
Length:
N/A - not specified for this model
Seat Height:
Approximately 780 mm (30.7 in)
Curb Weight:
Approximately 227 kg (500 lb) dry, verify exact wet weight against factory data
Fuel Capacity:
Approximately 17 liters (4.5 US gal)
Active and Passive Features
Crash Test Rating:
N/A - motorcycles are not subject to consumer crash test ratings
Braking:
Front and rear disc brakes
Front Suspension:
Telescopic fork with anti-dive link (Buell Showa fork design)
Lighting:
Full headlight, tail light and signal lighting with relays
Frame:
High-strength steel perimeter-style frame with aluminum swingarm carrying oil
ABS:
N/A - not fitted on this model
Instrumentation and Electronics
Instrumentation:
Analog speedometer and tachometer with warning indicator lights
Ignition Electronics:
Solid-state electronic ignition module
Charging System:
Alternator with voltage regulator/rectifier
Audio System:
N/A - no factory audio fitted on this model
Driver Assistance:
N/A - no electronic rider aids fitted on this model
Service Intervals and Fluids
Engine Oil:
Harley-Davidson/Buell approved 20W50 engine oil, dry-sump system, capacity specified in manual
Transmission Lubricant:
Gear oil per Buell specification, capacity stated in manual
Primary Chain:
Periodic chain adjustment and lubrication
Final Belt:
Belt deflection check and adjustment at each service interval
Valve Adjustment:
Periodic pushrod/valve clearance inspection
Spark Plugs:
Replace at scheduled service intervals
Brake Fluid:
DOT-approved hydraulic fluid, periodic flush and pad inspection
Tires:
Pressure and wear checks at every service interval
Known Issues and Wear Items
Common Wear Items:
Brake pads, tires, drive belt and primary chain are the primary wear items
Known Issue:
Check swingarm oil seal and primary chain tensioner condition during service
Manufacturer:
Buell Motorcycle Company, founded by Erik Buell, based in East Troy, Wisconsin, USA
Model Evolution:
The Lightning S1 debuted in 1996 as Buell's flagship streetfighter, followed by the updated S1W with a wider rear wheel and improved suspension
Production Location:
East Troy, Wisconsin, USA, using Harley-Davidson 1200cc Sportster-derived engines
Design Philosophy:
Signature Buell innovations including oil carried in the swingarm and transmission mounted to the rear wheel