Yamaha FZ700T / FZ750 1985–1988 OEM Service Manual (P/N LIT-11616-FZ-75)

This 272-page PDF contains Yamaha's FZ750N base service manual, covering maintenance and repair of the liquid-cooled DOHC Genesis engine, chassis, and electrical systems. Yamaha wrote it for its dealers and qualified mechanics with an existing knowledge of motorcycle service.

The cover carries reference LIT-11616-FZ-75 and the broader FZ750 (N–U)/FZ700T designation. The contents cover model code 1AE, with starting engine number 1AE-000101. Separate FZ700T and later FZ750 model supplements are not included.

Engine, Chassis & Electrical Service

Core contents include:

• Engine Overhaul: Engine removal and reinstallation, cylinder-head disassembly, valve-guide replacement and valve-seat repair, piston and cylinder inspection, and camshaft timing. Valve-clearance adjustment includes intake and exhaust pad-selection charts.
• Transmission & Clutch: Internal inspection and assembly of the six-speed gearbox, shift-fork and shift-drum checks, wet clutch inspection, and starter clutch service.
• Carburetion: Mikuni BDS34 carburetor disassembly, vacuum-piston and diaphragm inspection, float-valve checks, fuel-level adjustment, and carburetor synchronization.
• Cooling System: Water-pump bearing and mechanical-seal replacement, thermostat testing, radiator-cap checks, and cooling-system pressure testing.
• Brakes & Hydraulic Clutch: Caliper, master-cylinder, and clutch-release-cylinder disassembly and inspection, followed by assembly and hydraulic bleeding procedures.
• Suspension & Steering: Front-fork overhaul and variable-damper adjustment, steering-head bearing service, swingarm and linkage inspection, and setup of the rear shock's remote preload and damping controls.
• Electrical Diagnosis: TCI ignition testing, starter safety-circuit checks, charging-system fault tracing, and diagnosis of the electric fan and fuel-pump controller, including the reserve-switch circuit.

Factory Specifications & Rebuild Data

Periodic inspections cover compression-pressure testing and ignition-timing checks, with separate maintenance charts for emission-control items and general lubrication.

The engine sections explain crankshaft main-bearing and connecting-rod bearing selection using component identification numbers and bearing color codes. Plastigage measurement procedures accompany the bearing-selection guidance. Cylinder inspection includes the measurements used to evaluate bore wear and select replacement pistons.

The appendices provide component-specific torque tables in Nm, m-kg, and ft-lb, plus fluid capacities, wear limits, adjustment data, and electrical test specifications. Engine and chassis tables identify fastener sizes and quantities alongside the tightening values and applicable lubrication or locking-agent notes.

Detailed exploded-view diagrams identify component positioning, hardware order, and lubrication points. The carburetor section view shows its air, fuel, and mixture passages; the Lubrication Diagram traces oil delivery through the engine. Cable Routing plates locate control cables, hoses, and harness runs.

For electrical repair, the FZ750N Wiring Diagram supplies wire-color references. The Starting Circuit Operation chart explains the neutral, clutch, and sidestand interlocks, while Fuel Pump Circuit Operation documents the controller's response to engine operation and fuel-reserve selection.

Special Tools & Service Limits

The special-tool list specifies vacuum gauge YU-08030 for synchronization. Cylinder-head repair calls for valve spring compressor YM-04019 with attachment YM-04108. The manual also identifies the dedicated equipment used for valve-guide work, fork-seal installation, and cooling-system testing.

The camshaft procedures warn that uneven cap tightening can damage the cylinder head, caps, and camshaft. Fork disassembly carries a separate caution about damaging the oil lock piece by bottoming the inner tube.

The sealed rear shock absorber is treated as a replacement assembly; its internal rebuilding is outside the service scope.

Follow standard workshop safety protocols for supporting the motorcycle, servicing brake hydraulics, and handling the nitrogen-charged rear shock.