Positioning:
The Triumph Sprint ST and RS models of the late 1990s represented a shift towards more refined, multi-purpose sport touring motorcycles, blending performance with comfort.
Competitors:
Competed with models like the Honda VFR750F/VFR800, Yamaha YZF1000R, Kawasaki ZX-9R, and Suzuki GSX-R750 in their sport-touring variants.
Sport Touring Blend:
Designed to offer exhilarating performance for spirited riding while also providing the comfort and stability for longer journeys.
Engine Powerplant:
Powered by Triumph's signature liquid-cooled, 12-valve, DOHC, inline three-cylinder engine.
Primary Coverage:
Mechanical, Electrical, Bodywork, Maintenance, Troubleshooting, Repair
Specific Systems:
Engine, Fuel System, Ignition System, Cooling System, Lubrication System, Transmission, Clutch, Suspension, Steering, Brakes, Electrical System, Lighting, Instruments, Body Panels, Fairings, Chassis
Type:
Service Workshop Repair Manual
Format:
Digital (likely PDF)
Engine Mechanical:
Complete disassembly, inspection, assembly of the 955cc triple engine, including cylinder head, pistons, crankshaft, connecting rods, valves, timing system.
Fuel System:
Fuel injection system diagnostics, component testing, fuel pump, injectors, pressure regulator, throttle body.
Ignition System:
ECU diagnostics, coil pack inspection, spark plug specifications, timing procedures.
Cooling System:
Radiator, hoses, thermostat, water pump inspection and replacement, coolant specifications and fill procedures.
Lubrication System:
Oil pump, oil filter replacement, oil specifications and capacities, oil pressure testing.
Transmission:
Gearbox disassembly, inspection, and reassembly, clutch operation and adjustment, gearbox oil type and capacity.
Suspension Front:
Fork disassembly, seal replacement, oil type and level, spring preload adjustment, damping settings.
Suspension Rear:
Monoshock adjustment, linkage maintenance, shock absorber overhaul (if applicable), swingarm bearing service.
Brakes Front:
Caliper service, pad replacement, disc inspection, master cylinder overhaul, brake fluid specifications and bleeding procedures.
Brakes Rear:
Caliper service, pad replacement, disc inspection, master cylinder overhaul, brake fluid specifications and bleeding procedures.
Electrical System:
Wiring diagrams, component testing (alternator, starter motor, battery), fuse and relay identification, lighting circuit diagnosis.
Bodywork:
Fairing removal and installation, seat and tank removal, panel alignment, cosmetic repair guidance.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment and lubrication, tire pressure checks, brake fluid level checks, coolant level checks, spark plug replacement.
Troubleshooting:
Systematic diagnostic procedures for common running issues, electrical faults, and mechanical failures.
Repair Overhaul:
Detailed step-by-step instructions for disassembling, repairing, and reassembling major components and systems.
Specifications Torque:
Essential torque values for critical fasteners throughout the motorcycle.
Depth:
Comprehensive, suitable for experienced home mechanics and professional technicians. Covers full rebuilds and in-depth diagnostics.
Engine Type:
Liquid-cooled, 4-stroke, DOHC, 3-cylinder, 12-valve
Engine Displacement:
955 cc (58.0 cu in)
Bore X Stroke:
74.0 mm x 74.0 mm
Compression Ratio:
11.2:1
Horsepower Est:
100-110 hp (approximate, depending on specific tune)
Torque Est:
70-75 lb-ft (approximate, depending on specific tune)
Fuel Delivery:
Fuel Injection (likely multi-point)
Fuel Type:
Unleaded gasoline (95 RON / 91 AKI recommended)
Oil Type Spec:
SAE 10W-40 or 15W-50 Motorcycle Oil, API SG or higher
Oil Capacity Filter Change:
Approx. 3.5 - 4.0 liters
Coolant Type:
Ethylene Glycol based coolant (50/50 mix with distilled water)
Oil Change Interval:
Every 4,000-6,000 miles or 6-12 months, whichever comes first.
Spark Plug Replacement:
Every 8,000-12,000 miles.
Chain Maintenance:
Lubricate and adjust every 500 miles or after riding in wet conditions.
Valve Clearance Check:
Every 12,000-16,000 miles (indicative, refer to manual for precise interval).
Coolant Capacity:
Approx. 2.0-2.2 liters
Common Wear Items:
Clutch plates, rear shock absorber (especially if not regularly serviced), fork seals, regulator/rectifier failures (common to many bikes of this era).
Potential Electrical Issues:
Wiring harness chafing, especially around the steering head; occasional issues with the ignition switch or starter solenoid.
Engine Performance:
Early fuel injection systems could sometimes be sensitive to air leaks or sensor faults, leading to rough running. Regular throttle body synchronization is beneficial.
Triumph Legacy:
Continuation of Triumph's long history of producing iconic British motorcycles, known for their triple engines and distinctive styling.
Sprint Series:
The 955cc engine represented a significant update from earlier T300 series models, introducing fuel injection and improved performance. The RS offered a more aggressive stance and potentially higher specification than the ST.
Manufacturing Location:
Hinckley, Leicestershire, England
Production Years:
The 955i engine was introduced around 1997-1998, with the Sprint ST and RS models utilizing this engine throughout the late 1990s and into the early 2000s. The 1999 model year falls within this early phase.
