Yamaha XP500 / XP500A T Max Service & Repair Manual, 2005 (P/N 5VU5-AE1)

This Yamaha service manual covers the 2005 XP500 (5VU6) and XP500A (5VU5) T Max, with model-specific procedures and diagrams for the standard-brake and ABS versions. Yamaha publication 5VU5-AE1 is the first edition, September 2004.

PDF Format and Navigation

Text search and diagrams: The PDF has searchable text and bookmarks for the main chapters and full wiring diagrams. The two Return bookmarks reference separate files outside this download. Small labels in the dense circuit diagrams require zooming.

The ZIP download contains one printable English PDF with 559 pages, including the original front and back covers and nine blank pages.

Engine, Drivetrain, and ABS Service

The following selected coverage highlights summarize part of the manual. Additional topics include body-panel removal and headlight aiming.

• Engine repair: Engine removal and installation, camshaft and timing-chain work, cylinder-head and valve service, and internal engine inspection.

• Drivetrain service: Clutch disassembly and inspection, primary and secondary sheave service, V-belt replacement, internal transmission checks, and enclosed chain-drive repair.

• Chassis and brakes: Wheel and brake-disc service, master-cylinder and caliper overhaul, front-fork disassembly and assembly, steering-head service, rear suspension, and model-specific bleeding.

• XP500A ABS diagnosis: ECU and fail-safe relay checks, wheel-sensor and sensor-rotor inspection, hydraulic-unit testing, malfunction diagnosis, and final system verification.

• Fuel-injection testing: ECU self-diagnosis, fail-safe tables, meter-based diagnostic mode, sensor and actuator checks, fuel-pump testing, and fault-code troubleshooting.

• Electrical repair: Ignition, starting, charging, lighting, signaling, radiator-fan control, starter-motor overhaul, and immobilizer diagnosis, supported by circuit diagrams.

Yamaha produced this manual primarily for dealers and qualified mechanics; it assumes mechanical knowledge and familiarity with the techniques used to service these vehicles.

Maintenance and Internal Engine Work

Routine service coverage goes beyond the maintenance chart. It includes valve-clearance adjustment, throttle-body synchronization, exhaust-gas adjustment and checking, compression and oil-pressure measurement, coolant replacement, chain-drive oil service, rear brake lock cable adjustment, and battery charging.

Major repair sections pair exploded assembly views and job charts with step-by-step procedures. These references let the mechanic review component relationships, required tools, and inspection stages before teardown.

Internal engine coverage extends to valve guides and seats, pistons and rings, crankshaft bearing selection, connecting rods, the starter clutch and A.C. magneto, and oil-pump service.

Uneven camshaft-cap bolt loosening or tightening can damage the cylinder head, caps, and camshafts. The camshaft section identifies the related assembly precautions and timing checks.

Cooling-system repair includes the radiator, oil cooler, thermostat, and water pump, with removal, inspection, assembly, and installation instructions where applicable.

Fuel-Injection Fault Tracing

The fuel-injection chapter combines ECU fault-code tables, fail-safe behavior, diagnostic-mode readings, and fault-specific troubleshooting. These checks help distinguish sensor faults from wiring and connector problems before components are replaced.

Covered circuits include the crankshaft-position, intake-pressure, intake-temperature, coolant-temperature, throttle-position, lean-angle, and oxygen sensors. Fuel-injector, fuel-pump, ignition-coil, and relay checks are also included.

Throttle-position sensor inspection and adjustment are documented, while Yamaha specifically cautions that the throttle body itself should not be disassembled.

XP500A ABS Procedures and Limits

The ABS section distinguishes stored malfunctions from present faults and explains their diagnosis through the test coupler using the multifunction display or a pocket tester. Hydraulic-unit operation tests, malfunction-code deletion, a trial run, and a final check are included.

Component limits: The ABS ECU, hydraulic unit, wheel sensors, and fail-safe relay must not be internally disassembled. The manual covers their inspection, electrical testing, and replacement as applicable.

On XP500A wheel repair, metal contact with a wheel-sensor electrode or debris left in the hub can damage the sensor and inner sensor rotor.

Brake and ABS repair can leave the scooter unsafe if the specified bleeding and operational-check sequences are not followed.

Starting Circuits and Immobilizer Registration

Separate starting-circuit cut-off diagrams explain the XP500 and XP500A arrangements. The immobilizer section adds system and circuit diagrams, self-diagnosis codes, fault tracing, and key-code registration.

A replacement table identifies the registration requirements after ECU, immobilizer-unit, main-switch, or key replacement. The procedures distinguish the code re-registering key from the standard keys.

Diagrams, Specifications, and Special Tools

Visual references include engine oil-flow diagrams, the coolant-flow diagram, separate XP500 and XP500A cable-routing layouts, the fuel-injection wiring diagram, the XP500A ABS circuit diagram, and full XP500/XP500A wiring diagrams with component legends and color codes.

Specification chapters provide lubrication points, fluid capacities, wear limits, clearances, electrical test values, and component-specific engine and chassis tightening data.

Named Yamaha tools include the ABS test coupler adaptor 90890-03149, vacuum gauge 90890-03094 / YU-44456, flywheel puller 90890-01362 / YU-33270-B, and sheave spring compressor/fixed block 90890-04134 / 90890-04135. Tool numbers can vary by market; U.S./Canada equivalents are listed where available.

Valve-Clearance and Sensor-Voltage Preview

For cold-engine valve-clearance checks, the manual specifies intake clearance of 0.15–0.20 mm and exhaust clearance of 0.25–0.30 mm. The adjustment section includes a valve-pad selection table for choosing replacement pads.

For throttle-position sensor adjustment, the specified output is 0.63–0.73 V between the yellow and black/blue terminals. The related section distinguishes sensor resistance checks from voltage adjustment with the sensor connected to the wiring harness.