Triumph Tiger 955i 2001 Factory Service Manual (P/N 3857017)

Triumph’s English-language factory service manual for the 2001 Tiger 955i, P/N 3857017, issue 1, dated 02.2001.

PDF Search, Navigation and Wiring Detail

Finding text and reading diagrams: PDF text search and embedded bookmarks are not available. Small wiring labels require zooming; some labels in the overall wiring diagram remain faint and difficult to read when enlarged.

ZIP download containing one printable PDF with 334 pages, including one front cover, one title/copyright page and 14 blank pages.

Engine Repair, MC1000 Diagnostics and Chassis Service

The following is a selection of covered topics. Additional procedures include body-panel and rear-rack removal, plus headlight-beam adjustment.

• Engine service: Step-by-step instructions cover engine removal and installation, camshaft and cam-chain service, and shim-type valve-clearance adjustment.
• Clutch and transmission: Cable-operated clutch service, transmission disassembly and reassembly, and starter sprag-clutch work are documented with assembly detail.
• MC1000 diagnostics: Engine-management procedures include fault-code retrieval, live data, freeze-frame information and actuator function tests using the specified diagnostic tool.
• Front suspension and steering: Fork rebuilding includes seal and bushing work, with separate instructions for steering-head bearing adjustment and replacement.
• Brake hydraulics: Service procedures cover bleeding, caliper and master-cylinder overhaul, pad replacement, and brake-disc thickness and runout inspection.
• Assembly and wiring references: Exploded views support mechanical repair; engine-management and chassis wiring diagrams include component keys, wire-color identification and connector references.
• Incomplete cylinder-head section: Removal coverage stops at printed page 3.19. Subsequent head inspection, installation and valve/stem-seal procedures are absent from this PDF.

Written primarily for trained technicians in properly equipped workshops, the manual also supports basic owner maintenance and repairs when the necessary mechanical knowledge, hand tools and special service tools are available.

Engine and Drivetrain Repair

Lower-engine coverage includes crankcase separation and reassembly, crankshaft and connecting-rod inspection, piston/ring checks, and cylinder-liner removal and resealing.

Bearing and balancer work: Bearing-selection charts support big-end and main-bearing replacement. A separate balancer chapter documents shaft timing and the backlash-eliminator assembly.

Clutch repair detail addresses friction-plate wear, anti-judder components and differences between plate positions. Transmission sections cover the selector forks, drum and gear-change mechanism, along with input- and output-shaft layouts.

Camshaft bearing caps: Releasing one cap completely in isolation can crack it. These caps are matched to the cylinder head and are not individually replaceable.

Fuel Injection and MC1000 Diagnostics

Diagnostic instructions use Triumph tool T3880250. The ECM Connector Pin Numbering—MC1000 view supports individual circuit tests, while separate non-electrical fault charts address poor throttle response, idle problems and fuel-delivery faults.

Throttle-position, idle-control and fuel-trim reset functions sit alongside tune downloading and interrupted-download recovery. The documented diagnostic workflow requires a dealer number, and tune updates require a Triumph-supplied password.

Fuel-pressure diagnosis: Testing with gauge T3880048 helps distinguish pump, regulator and hose faults. Throttle-body balancing, injector service and California-only evaporative-loss controls are also covered.

A fuel-system caution explains how running the pump with a hose disconnected bypasses regulation and can damage the filter or dislodge hoses inside the tank.

Lubrication and Cooling Service

The Engine Oil Circuit diagram explains lubricant distribution, backed by oil-pump inspection and oil-cooler service procedures.

Cooling-system repair covers coolant renewal and bleeding, pressure-cap testing, thermostat checks and water-pump replacement.

Suspension, Final Drive and Wheels

Rear suspension: Procedures cover shock-unit removal and installation with the remote preload adjuster, the shock’s lower needle-roller mounting and swingarm bearings. Internal shock rebuilding is not included.

Final-drive procedures cover eccentric chain adjustment and chain replacement. The wheel section addresses spoked, inner-tube wheels, bearing replacement and the rear cush-drive layout.

The Fork Oil Level Chart specifically identifies Tiger VIN 71699 onward, with oil and fork-position data for that application. Brake pages pair the Front Brake Layout with hydraulic-component service and inspection references.

Work on the pressurized fuel and cooling systems and brake hydraulics requires the manual’s system-specific safety precautions and appropriate workshop equipment.

Electrical Components and Circuit Diagrams

Component procedures cover alternator rotor/stator removal, starter-motor replacement and instrument-pack removal.

The Starting and Charging Circuit Diagram traces the starter interlocks and charging components. Separate lighting and auxiliary circuits identify the associated relays, switches and accessory connections.

Maintenance Schedules and Workshop Reference Data

Component-specific torque tables cover chassis, engine and suspension fasteners, including staged crankcase tightening. Reference data include fluid capacities, bearing clearances and wear limits.

The routine maintenance chart organizes inspection, adjustment and replacement work by elapsed time and mileage.

Selected Valve-Clearance and Sensor Test Values

Cold-engine valve-clearance specifications are 0.10–0.15 mm for the intake valves and 0.15–0.20 mm for the exhaust valves. Measurement instructions and intake/exhaust shim-selection charts accompany these limits.

For the MC1000 coolant-temperature sensor, the diagnostic table gives 2.35–2.65 kΩ at 20°C ambient with the engine cold. The table pairs resistance data with connector checks, wiring-continuity tests and fault-code clearing, helping distinguish sensor faults from circuit problems.