🏷️ Basic Information Identification Make: Yamaha Model: Genesis FZ750 Model Years Covered: 1985, 1986, 1987, 1988 Codes Chassis Code: 1FN (for early models), 2LM (for later models) 👋 Introduction Market Position Target Audience: Technicians, mechanics, and owners seeking to repair and understand their FZ750. Key Features Comprehensiveness: Combines service, repair, and owner's manual information for ultimate utility. Data Accuracy: Technical data kept like original manufacturer books. Value Proposition Benefits: Low price, great quality, instant access, expert support. 📋 Manual Details Coverage Areas Manual Title: Yamaha Genesis FZ750 1985-1988 Service Repair Manual and Owner Manual Ultimate Manual Type: Comprehensive Service, Repair, and Owner's Manual Page Count Estimated Page Count: Hundreds to thousands (printable) Language Language: English Format File Format: PDF File Requirement: Adobe PDF Reader, WinZip (for larger files) 📖 Manual Coverage Systems Covered Engine Service Repair: Complete engine overhaul, disassembly, assembly, inspection, and tuning. Transmission Service Repair: Clutch operation, gearbox inspection, repair, and maintenance. Brake System: Front and rear brake system servicing, including hydraulic components, pads, and rotors. Wiring Diagram: Detailed electrical wiring diagrams for all circuits. Electrical System: Comprehensive coverage of ignition, charging, lighting, and accessory electrical systems. Suspension: Front fork (telescopic with anti-dive mechanism) and rear monoshock suspension servicing and adjustments. Steering: Handlebar, steering head bearings, and linkage maintenance. Cooling System: Radiator, coolant flow, fan operation, and pump maintenance. Fuel Injection: Detailed information on the Yamaha Electronic Fuel Injection (EFI) system. Fuel System: Fuel tank, pump, filter, and line maintenance. Emission System: Components and operation related to emissions control. Engine Control System: ECU, sensors, and actuators related to engine management. Chassis Body: Frame inspection, body panels, fairings, and mounting points. Restraint System: While primarily a motorcycle, this may refer to rider safety considerations or specific component security. Interior: Instrumentation, controls, seating (if applicable to specific variants, though unlikely for this model). Drive Differential: Rear swingarm, chain drive, and sprocket maintenance. Axle: Front and rear wheel hub and axle inspection and lubrication. Procedures Included General Maintenance: Routine checks, cleaning, and lubrication schedules. Troubleshooting: Diagnostic procedures for common and uncommon problems. Periodic Lubrication: Specific lubrication points and intervals for all moving parts. Component Disassembly Assembly: Step-by-step instructions for dismantling and reassembling major components. Tuning And Adjustment: Procedures for adjusting fuel injection, ignition timing, and suspension. Technical Depth Diagnostic Capabilities: Advanced diagnostics for electrical and fuel injection systems. Repair Scope: Covers routine maintenance to complete engine rebuilds and system overhauls. 📊 Manual Specifications File Format Print Quality: Great Quality Delivery Delivery Method: Instant Download ⚙️ Engine Specifications Primary Engine Engine Type: DOHC, 5-valve per cylinder, inline-four cylinder Displacement: 749 cc (approximately) Bore X Stroke: 68.0 mm x 51.3 mm (typical for this era's 750cc inline-fours) Compression Ratio: 10.2:1 (typical) Performance Horsepower Output: Approximately 105-110 hp at 9,000-10,000 rpm (manufacturer claims vary by market and year). Torque Output: Approximately 55-60 lb-ft at 7,500-8,000 rpm. Fuel System Fuel Delivery: Yamaha Electronic Fuel Injection (Y.E.C.I.) Cooling System Cooling Method: Liquid-cooled 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Features Clutch Type: Wet, multiple-disc Final Drive: Chain drive 📐 Dimensions Exterior Length: Approximately 2,200 mm (86.6 in) Width: Approximately 780 mm (30.7 in) Height: Approximately 1,200 mm (47.2 in) Weights Dry Weight: Approximately 210 kg (463 lbs) Wet Weight: Approximately 230 kg (507 lbs) 🛡️ Safety Features Passive Features Frame Construction: Steel diamond frame for rigidity and handling. 💡 Technology Features Infotainment Instrumentation: Analog tachometer, speedometer, fuel gauge, and warning lights. Driver Assistance ABS: Not available on these models. Performance Enhancement Yfsi: Yamaha's pioneering Fuel Injection system was a significant technological advancement for its time. 🔧 Maintenance Service Intervals Oil Change Interval: Recommended every 3,000-5,000 km (1,800-3,000 miles) or 6 months, whichever comes first. Valve Clearance Check: Typically at 10,000-20,000 km (6,000-12,000 miles) intervals, with detailed procedures in the manual. Fluid Specifications Engine Oil Type: Yamalube 4 (or equivalent API SF/SG, SAE 10W-40) Coolant Type: Ethylene glycol-based antifreeze coolant (typically 50/50 mix with distilled water) Brake Fluid Type: DOT 4 Known Issues Fuel Injector Clogging: Can occur with age and fuel quality, requiring cleaning or replacement. Camchain Tensioner: Some models may develop a noisy camchain tensioner, requiring adjustment or replacement. Anti-Dive Mechanism: The anti-dive unit on the front forks can require maintenance and proper adjustment for optimal performance. 📚 Vehicle History Brand Heritage Yamaha Motorsports Legacy: Yamaha has a long and storied history in motorsports, known for innovation and performance. Model Evolution Genesis Engine Technology: The FZ750 was one of the first sportbikes to feature Yamaha's 'Genesis' engine concept with its 5-valve cylinder head technology, tilted forward cylinders, and rear-mounted shock absorber. Production Production Period: The FZ750 was produced from 1985 until the early 1990s, with the specific model years 1985-1988 being the focus of this manual.