📚 Vehicle Manual Information

1999 Triumph Sprint ST RS 955 Service Workshop Repair Manual

🏷️ Basic Information

Make:

Triumph

Model:

Sprint ST RS

Year:

1999

Engine Code:

955i

👋 Introduction

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.

📋 Manual Details

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

Estimated Pages:

300+

Type:

Service Workshop Repair Manual

Language:

English

Format:

Digital (likely PDF)

📖 Manual Coverage

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.

📊 Manual Specifications

Digital Format:

PDF

Quality:

High-resolution scans of original factory documentation, ensuring clarity of diagrams and text.

Binding:

N/A (Digital)

Paper Quality:

N/A (Digital)

⚙️ Engine Specifications

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)

🔧 Transmission

Transmission Type:

6-speed sequential manual

Optional Transmission:

N/A

Clutch Type:

Wet, multi-plate

Final Drive:

Chain drive

Gearbox Oil Type:

API GL-4 or GL-5 SAE 75W-90 Hypoid Gear Oil

Gearbox Oil Capacity:

Approx. 1.5 liters

📐 Dimensions

Length Est:

Approx. 2150 mm

Width Est:

Approx. 740 mm

Height Est:

Approx. 1200 mm

Wheelbase Est:

Approx. 1450 mm

Dry Weight Est:

Approx. 205-210 kg

Wet Weight Est:

Approx. 225-230 kg (with fluids)

Luggage Capacity:

Optional pannier and top box mounting points, often fitted with factory or aftermarket luggage systems for touring.

🛡️ Safety Features

Safety Standards:

Manufacturer's internal safety standards; specific government crash test ratings typically not applied to motorcycles of this era.

Braking System:

Hydraulic disc brakes front and rear. ABS was an optional feature on some models or later iterations.

Lighting:

Dual halogen headlights for enhanced visibility.

Chassis Design:

Robust perimeter frame design for stability and rider confidence.

💡 Technology Features

Infotainment System:

None (basic analogue instrumentation with LCD trip computer).

Driver Assistance Features:

N/A (Motorcycle)

Connectivity Features:

N/A (Motorcycle)

Instrument Cluster:

Analogue speedometer and tachometer, LCD display for odometer, trip meter, clock, and basic warning lights. Some later models may have had more advanced displays.

🔧 Maintenance

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).

Brake Fluid Type:

DOT 4

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.

📚 Vehicle History

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.

🏆 Awards & Recognition

Industry Acclaim:

The Sprint ST and RS models generally received positive reviews for their powerful triple engines, comfortable riding position for a sportbike, and capable handling, making them strong contenders in the sport-touring segment.

Performance Ratings:

Praised for strong mid-range torque delivery and refined engine characteristics.

Emission Standards:

Compliant with prevailing emission standards for the period of manufacture in its primary markets.