1986–1987 Yamaha FZX700S, FZX700SC Manual FSM (P/N LIT-11616-05-05)

• A 273-page PDF of Yamaha’s factory service manual for the FZX700S and FZX700SC, P/N LIT-11616-05-05; first edition, December 1985.
• Engine overhaul covers removal and remounting, cylinder-head and piston service, crankshaft inspection, and transmission inspection and reassembly.
• Valve-clearance adjustment and pad-selection charts accompany carburetor synchronization and fuel-level adjustment for the Mikuni BDS34 carburetors.
• Cooling-system procedures include water-pump bearing and seal replacement, thermostatic-valve testing, and radiator-cap pressure checks.
• Brake and hydraulic clutch repair extends to the calipers, master cylinders, and clutch-release assembly, with disassembly, inspection, reassembly, and air bleeding.
• Chassis repair covers front-fork overhaul, steering-head bearing service, swingarm inspection, and wheel-bearing replacement.
• Electrical troubleshooting charts and circuit diagrams address starting, TCI ignition, charging, lighting, signals, cooling-fan operation, and fuel-pump faults.

Factory Service and Overhaul Coverage

It starts with general motorcycle identification, serial number locations, and maintenance schedules. The S model is identified as 1UF, with engine starting number 1UF-000101; the SC is 1UH, starting at 1UH-000101. Corresponding VIN starting entries are provided. California-specific notes identify evaporation and canister-hose connections during removal work.

Compression-pressure testing includes diagnostic checks for ring, valve, head-gasket, and valve-timing problems. The maintenance chapter also covers ignition-timing inspection and separately groups emission-control service items.

Internal engine repair covers the liquid-cooled DOHC inline-four’s camshaft case, valve-guide replacement, and valve-seat cutting and lapping. The camshaft-case section provides color-coded valve-lifter selection, and reassembly procedures cover cam-chain timing. Crankshaft main and connecting-rod bearing selection uses stamped component codes, supported by Plastigage clearance checks.

Crankcase assembly covers the HY-VO chain and starter-clutch damper; the oil-pump section checks rotor clearances. Clutch notes identify friction-plate and pressure-plate match marks. The Camshaft and Transmission exploded views support valvetrain and six-speed gearbox assembly.

Piston, clutch, carburetor, and AC-generator removal are specifically identified as work that does not require engine removal. Yamaha also warns that uneven cam-cap tightening can damage the cylinder head, caps, and camshaft.

Carburetion and Chassis Service Details

Carburetor disassembly includes vacuum-piston diaphragms, starter plungers, and float valves. The Carburetor Section View identifies the fuel, air, and mixture passages, while the specification tables distinguish inner- and outer-cylinder jetting.

Wheel service includes static balancing and brake-disc inspection. Drive-chain and sprocket wear checks sit alongside fork-air and rear-spring preload adjustments. Rear-shock coverage includes adjustment, removal, inspection, and replacement, not internal damper rebuilding.

The fork instructions warn that bottoming the inner tube during guide-bushing removal can damage the oil lock piece.

Electrical Fault Tracing and Wiring

Starting-circuit diagnosis separates starter-motor faults from problems in the clutch, neutral, and sidestand switches. Bench checks cover brushes, the armature, relay contacts, and rectifier diodes. The Fuel Pump Circuit Operation chart explains how the controller, sender, and reserve switch interact.

The electrical specifications identify the Hitachi TID14-52 TCI unit and Omron G8D-04Y fuel-pump controller. System schematics are backed by the full FZX700S/FZX700SC Wiring Diagram and cable-routing drawings.

Engine and Chassis Specifications

Reference tables cover brake-fluid requirements, spark-plug types, drive-chain slack, and chassis geometry. Component-specific tightening torques and sequences, fluid capacities, wear limits, and electrical test values are collected in the appendices.

The Lubrication Diagram traces oil distribution to the camshaft bearings, crankshaft, transmission, and generator drive. Special-tool references include Universal Clutch Holder YM-91042 and Valve Spring Compressor YM-04019 with Attachment YM-04108.

When applying these technical schematics and torque figures in the workshop, verify your equipment calibration and follow Yamaha’s safety procedures, particularly for brake hydraulics and pressurized cooling and suspension components.