Yamaha YZF-R1 / YZF-R1S / YZF-R1SC 2004 Service Manual (P/N LIT-11626-17-55)

This three-PDF factory set covers the 2004 Yamaha YZF-R1 family under the exact U.S. designations YZF-R1S (5VY4, U49/49-state) and YZF-R1SC (5VY5, California). It combines shop-level repair material with the owner’s operating and maintenance reference and a model-specific illustrated parts catalog. Yamaha states that the service manual was produced primarily for its dealers and qualified mechanics; accordingly, the repair sections are suited to professional technicians and experienced owners who already understand motorcycle service and have the specified tools and test equipment.

• Exact model and VIN coverage: YZF-R1S/5VY4 U49 from JYARN13E34A000009 and following, plus YZF-R1SC/5VY5 California from JYARN13Y34A000005 and following.
• Engine and drivetrain repair: Covers engine removal and installation, camshaft and timing-chain service, cylinder head and valve work, clutch inspection, crankcase separation, oil-pump service, pistons and connecting rods, crankshaft bearing selection, and transmission/shift-fork repair.
• Chassis and brake work: Includes wheel and brake-disc inspection, static balancing, master-cylinder and caliper overhaul, hydraulic brake bleeding, front-fork disassembly and seal installation, steering-head service, swingarm and drive-chain work, and rear-shock removal.
• Fuel-injection and emissions diagnosis: Provides ECU diagnostic mode, fail-safe tables, fault-code troubleshooting, throttle-body synchronization, throttle-position and sub-throttle sensor adjustment, fuel-pressure checks, EXUP cable adjustment, air-induction testing, and California evaporative-emissions coverage.
• Electrical fault tracing: Breaks out ignition, starting circuit cut-off, starter motor, charging, lighting, signaling, cooling-fan, fuel-pump, and self-diagnosis circuits with system-specific test charts and electrical specifications.
• Factory reference material: Supplies component torque tables, fluid-capacity data, wear limits, clearance and adjustment specifications, cable-routing views, cooling and lubrication diagrams, a color wiring schematic, and exploded parts views with Yamaha part numbers.

Model- and Market-Specific Coverage

The parts catalog identifies both variants by model code and starting VIN, then marks the application as “and following.” For correct fitment, use those identifiers rather than relying on the R1 name alone. It separates U49 and California throttle-body assemblies (5VY-13750-00-00 and 5VY-13750-10-00) and frame assemblies (5VY-21110-00-00 and 5VY-21110-10-00). California-only listings include the canister, rollover valve, vapor pipes, hoses, and brackets. The service specifications also distinguish USA and California charging-system components, while the maintenance material adds the California evaporative-emission control system.

Diagnostic and Factory-Reference Depth

This is more than a routine-maintenance guide. The fuel-injection chapter links ECU self-diagnosis and diagnostic-mode results to circuit checks, sensor testing, injector and throttle-body inspection, fuel-pump operation, and fail-safe behavior. Diagram coverage includes the cooling-system diagrams, engine oil lubrication chart, fuel-injection wiring diagram, ignition circuit diagram, starting circuit cut-off operation chart, and the full YZF-R1S/YZF-R1SC color wiring diagram with component and connector identification.

The special-tool section gives both Yamaha’s general 90890-series numbers and North American YM/YU numbers. Useful examples include the fork spring compressor 90890-01441 / YM-01441, fork seal driver 90890-01442 / YM-01442, camshaft wrench 90890-04143 / YM-04143, and fuel-pressure adapter 90890-03176 / YM-03176.

Two repair cautions are particularly relevant during major work. Each camshaft cap must return to its original position and orientation, and the cap bolts must be tightened evenly; incorrect placement or turning the crankshaft during camshaft installation can damage the head or camshafts and disturb valve timing. The fuel-tank section also warns against resting the tank on the fuel-pump mounting face or shocking the pump, which can damage the pump assembly or sender. Brake, suspension, engine-removal, hot-cooling-system, and gas-charged shock work should be performed with the motorcycle securely supported and the Yamaha safety procedures followed.

Included Publications

644 PDF pages total — Service Manual P/N LIT-11616-17-55, first edition, December 2003: 457 pages; Owner’s Manual P/N LIT-11626-17-55, first edition, December 2003: 114 pages; illustrated 2004 Parts Catalog: 73 pages. The owner’s volume covers controls, multi-function meter and shift-light settings, pre-operation checks, scheduled maintenance, minor service, troubleshooting charts, and storage. The parts catalog supports repair planning with exploded assembly views, quantities, factory part numbers, and U49/California remarks. Its cover references Assembly publication P/N LIT-11666-17-55, but that separate publication is not included in this three-PDF set.