Aprilia Tuono V4 R a-PRC (2011) Service Station Manual (P/N 899005)

This factory Aprilia Service Station Manual (P/N 899005) covers the 2011 Tuono V4 R a-PRC with traction control, wheelie control, launch control, and clutchless upshifting. The specifications list ABS as disabled for this configuration.

PDF Search, Bookmarks, and Wiring Detail

Finding procedures and wiring references: The manual text is searchable. Embedded bookmarks link to individual topics, although some chapter headings only group their subtopics. Small pin numbers and wire codes in the overall wiring diagram require zooming, and some remain hard to read even when enlarged. The component legend and separate connector pinouts are searchable.

The download is one printable English-language PDF. Its 489 pages include the original cover, two introductory pages, and one motorcycle photo page.

V-4 Overhaul, a-PRC Diagnostics, and Chassis Service

This selection of workshop topics covers major repair and diagnostic jobs. The manual also includes service procedures for the exhaust system and pre-delivery inspections.

• Engine and gearbox: Engine removal and installation, cylinder-head and camshaft service, crankcase separation, wet-clutch and gearbox overhaul, and lubrication-system repair.
• Ride-by-wire and a-PRC: Marelli 7SM ECU diagnostics, throttle and twistgrip self-learning, cylinder pressure balancing, exhaust-valve calibration, and Quick Shift checks with the TXB Navigator.
• Electrical fault finding: No-start checks, fault codes, live parameters, actuator tests, relay and fuse locations, harness routing, connector pinouts, and CAN communication diagnosis.
• Suspension, steering, and wheels: Sachs fork overhaul, rear-shock adjustment, swingarm and linkage service, steering-bearing adjustment, and wheel, rim, and hub inspection.
• Brakes and cooling: Disc and pad inspection, caliper service, front and rear hydraulic bleeding, coolant replacement, radiator removal, and water-pump service.
• Workshop reference data: Scheduled maintenance, component torque tables, wear limits, bearing-selection data, electrical test values, recommended fluids, and numbered special tools.

Aprilia wrote the manual for its dealers and qualified mechanics. It assumes workshop experience and access to the specified tools and support equipment. Basic mechanical theory and some procedural detail are omitted.

Valve Timing, Engine Internals, and Gearbox

The intake cams are chain-driven and use cam-to-cam gears. The front and rear cylinder banks have separate procedures for checking clearances, selecting shims, removing the camshafts and heads, handling the chain tensioners, and inspecting valves and guides. The cam gears use different indexing marks for each bank, and the manual flags the risk of dropping a shim into the engine during tappet removal.

The engine chapter covers the starter freewheel, the clutch pack with anti-judder and slipper functions, the selector mechanism, and the gearbox shafts and shift forks. It also covers crankshaft and balance-shaft inspection, piston and connecting-rod service, bearing and bushing selection, and the dual oil pump. Exploded views show the relationships between the timing, clutch, and gearbox parts.

Maintenance Intervals, Fluids, and Tools

The maintenance chart runs from the 1,000 km service through 40,000 km. It specifies shorter intervals for wet, dusty, off-road, and track use, with separate racing intervals for selected items. The products chart lists ENI i-RIDE PG Racing 5W-40 engine oil, AGIP Permanent Spezial coolant, AGIP Brake 4 fluid, and AGIP Arnica SA 32 fork oil.

Numbered tools include the 020851Y camshaft and 020852Y crankshaft timing pins, the 020865Y camshaft-gear support, the 020883Y timing-chain tool, the AP8140181 fuel-pressure checking tool, and the 020680Y TXB Navigator.

ECU Diagnostics and Harness Routing

The manual covers ECU recovery modes, fault reading and clearing, throttle-body and twistgrip learning, and ECU activation after replacement or remapping. It also explains instrument-panel programming, immobilizer key registration, and service indicator reset.

The electrical tests cover injectors, coils, the fuel pump, MAP and temperature sensors, the oxygen sensor, fans, the secondary-air valve, and clutch and side-stand switches. The a-PRC diagnostics cover both wheel-speed circuits, the CLF tone-wheel control unit, and the inertial sensor platform.

The wiring diagram, separate ECU, CLF, and instrument-panel pinouts, and harness tables let a technician trace a circuit from a fault code to the connector and ground points to inspect. The tables identify connector colors, locking tabs, and cable paths. The fuel-injection section includes a separate ride-by-wire diagram and explains cylinder pressure balancing between cylinders on the same bank.

Sachs Fork, Brakes, and Cooling

The fork section covers disassembly, bushing inspection and replacement when worn, seal replacement, oil-level setup, and reassembly. The rear suspension section gives preload and damping adjustments and covers shock and linkage removal. The chassis sections also cover drive-chain adjustment and removal of the body panels, fuel tank, and airbox.

The brake chapter covers pad replacement, disc runout checks, and bleeding after the hydraulic circuits have been opened. The cooling chapter includes a circuit diagram and identifies the inner water-pump cover screw as a critical point when removing the cover. Pre-delivery checklists include static, road, and functional checks.

Selected Valve Clearance and Brake Disc Limits

For both cylinder banks, the valve clearance range is 0.10–0.15 mm on the intake side and 0.20–0.25 mm on the exhaust side.

The brake inspection section gives a minimum thickness of 4 mm for each front disc and 4.5 mm for the rear disc. These limits apply with the discs mounted on their wheels.