Ducati Monster S4R 2003–2007 Workshop Manual (P/N 914.7.052.1A)

Ducati workshop manual P/N 914.7.052.1A for the Model Year 2004 Monster S4R, edition 08-03, with English and Italian text. Added annotations address wording changes and refer to separate 2005 updates for Sections A, B, C, D, N, and P. The separate update PDFs are not included.

PDF Bookmarks and Wiring Detail

Navigation and small labels: Embedded bookmarks link to major sections and many subsections. Manual text is not searchable in this PDF. Small wiring labels require zooming, and a diagonal watermark crosses some diagrams.

Supplied as one 563-page printable PDF, including both original covers, contents pages, section dividers, and the subject index. Update comments appear within the file rather than as separate publications.

Desmodromic Engine Work, Chassis Service, and MATHESIS Diagnosis

This is a selection of the manual’s contents, rather than a complete table of contents. Other topics include headlight aiming and seat-release mechanism service.

• Engine repair: Step-by-step procedures for engine removal, cylinder-head disassembly, timing-system installation, cylinder/piston inspection, crankcase work, and reassembly.

• Clutch and gearbox: Dry-clutch fault diagnosis, clutch-pack inspection, primary-drive service, gearbox-shaft disassembly, and selector-component inspection.

• Scheduled maintenance: Oil and filter service, valve-clearance checks, timing-belt tensioning, coolant replacement, hydraulic-circuit bleeding, and chain adjustment.

• Chassis and brakes: Showa fork overhaul, wheel inspection, swingarm and suspension-linkage service, brake-component replacement, and steering-bearing adjustment.

• Fuel and ignition diagnosis: MATHESIS parameter checks, component activation, throttle-body synchronization, throttle-position and CO adjustment, and pressure testing.

• Electrical reference: Injection-ignition and main wiring diagrams, connector references, charging and starting checks, immobilizer programming, and multimeter testing.

Written for Ducati Authorized Service Centers and skilled workshop personnel, the manual assumes technical experience and access to the specified service equipment.

Maintenance and Engine Inspection

The maintenance schedule runs from pre-delivery checks and the first service through recurring inspections and replacements. It covers brake and clutch hydraulics, steering, wheels, suspension, and safety-critical fasteners alongside engine servicing.

Desmodromic valve information distinguishes intake and exhaust opening and closing rockers, with adjustment procedures and inspection limits. The oil-pressure and cylinder-compression sections connect test results with possible causes, helping technicians assess engine condition before deciding how far to disassemble it.

Internal Engine, Clutch, and Gearbox Repair

Internal coverage includes oil cooler and oil pump service, the breather circuit, radiator and coolant-pump work, camshafts, valve guides and seats, crankshaft inspection, and connecting rods. Component-specific torque tables include staged cylinder-head tightening requirements.

Timing-belt roller self-locking ring nuts are identified as replacement items because loosening can cause serious engine damage. Connecting-rod parts must remain matched and return to their original mounting positions.

Clutch diagnosis distinguishes slipping, dragging, and noise before internal work begins. Inspection extends to the clutch drum, cush-drive elements, plates, and springs; a pressure-plate bearing removed by the specified extraction method is treated as a replacement item.

Gearbox procedures cover shafts, engagement dogs, selector forks, the selector drum, and shimming. Exploded views support the timing-system, clutch-assembly, and gearbox-shaft procedures.

Forks, Swingarm, and Brake Service

Chassis sections cover wheel bearings and rims, the adjustable Showa front fork, rear suspension rocker and linkage, final drive, frame inspection, stands, footpeg supports, and control assemblies. Fork and shock settings accompany inspection dimensions and brake-disc wear limits.

Service boundaries: Front Brembo caliper work is limited to pads, fasteners, and the bleed unit; internal caliper overhaul is discouraged. Rear brake master-cylinder internals are not replaceable, and the rear eccentric hub is handled as a complete assembly rather than dismantled internally.

The rear shock section provides inspection and replacement guidance rather than an internal rebuild procedure. Suspension and brake work requires the precautions specified for pressurized components and safety-critical assemblies.

Marelli Engine Management and Electrical Testing

The Marelli 5.9M CPU sections explain the roles of the injectors, ignition coils, temperature and pressure sensors, throttle-position sensor, and timing/rpm sensor. Fuel-system procedures cover the pump, pressure regulator, throttle bodies, air intake, exhaust, and USA canister installation.

MATHESIS procedures address ECU parameters, active diagnosis, throttle adjustment, and fuel-pressure measurement. Charging-system tests, starter-enabling input tables, lighting and switch checks, instrumentation, and immobilizer/transponder programming extend the electrical coverage.

The Injection-Ignition System Diagram and main Wiring Diagram are supported by connector references and color-coded wire-routing plates. These let technicians follow circuit connections and check harness placement after components have been removed.

Factory Tools and Workshop Preparation

The special-tool tables identify MATHESIS tester kits 88765.1363A–E, timing-belt roller ring-nut wrench 88700.5644, TDC check gauge 88765.1297, crankshaft gear locking tool 88713.0137, and clutch drum wrench 88713.2133. These references help establish the holding and measuring equipment required before starting the documented work.

Selected Fluid, Belt, and Engine-Test Specifications

Fluid tables list engine-and-circuit oil capacity at 3.4 liters and coolant capacity at 2.7 ± 0.5 liters. MATHESIS timing-belt data specify 110 Hz ± 5 Hz for both horizontal and vertical cylinders.

With oil temperature at least 80°C, the oil-pressure test specifies above 0.8 bar at 1,100–1,300 rpm and above 4 bar at 3,500–4,000 rpm. Cylinder-compression data give an 11–12 bar standard, a 10 bar minimum, and a maximum 2 bar difference between cylinders.