Positioning:
Targeted at owners and independent mechanics seeking in-depth repair and maintenance information for a specific, performance-oriented sportbike.
Value Proposition:
Offers significant cost savings over dealership service by empowering DIY repairs and maintenance.
Features:
Detailed diagrams, exploded views, torque specifications, electrical schematics, and troubleshooting flowcharts.
Engine:
Complete engine overhaul, internal components, lubrication system, cooling system, turbocharger system.
Fuel System:
Fuel injection system, injectors, fuel pump, pressure regulator, turbocharger boost control.
Transmission:
Clutch operation, gear shifting mechanism, gearbox disassembly and assembly, lubrication.
Chassis:
Frame inspection and repair, suspension (front fork, rear shock absorber), steering system, wheel bearings.
Brakes:
Front and rear brake systems, hydraulic lines, calipers, master cylinders, brake fluid specifications.
Electrical System:
Ignition system, charging system, lighting system, starting system, wiring diagrams, component testing.
Bodywork And Accessories:
Fairing removal and installation, seat, fuel tank, controls, instrumentation.
Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, chain adjustment, brake adjustments, valve clearance checks.
Troubleshooting:
Diagnostic procedures for common problems, symptom-based troubleshooting guides.
Repair:
Detailed step-by-step repair instructions for all major components and systems.
Disassembly Assembly:
Comprehensive instructions for dismantling and reassembling the motorcycle and its various parts.
Technical Adjustments:
Precise specifications and procedures for adjusting critical parameters like ignition timing and fuel delivery.
Depth:
Comprehensive, covering everything from basic maintenance to full engine rebuilds and advanced diagnostics.
Engine Type:
Inline-4 cylinder, DOHC, 16 valves, Turbocharged
Displacement:
738 cc (45.0 cu in)
Bore X Stroke:
73.0 mm x 43.5 mm
Horsepower Claimed:
105 hp @ 9,000 rpm (approximate, varies with boost pressure)
Torque Claimed:
74 lb-ft @ 7,000 rpm (approximate)
Fuel Delivery:
Electronic Fuel Injection (EFI) with Turbocharger
Turbocharger Model:
Garrett AiResearch (specific model varies, typically small turbo)
Boost Pressure:
Approximately 14.7 psi (1.0 bar) at peak
Oil Capacity With Filter:
3.3 US qt (3.1 L)
Recommended Oil Type:
API SE, SF, SG; SAE 10W-40 (refer to manual for specific approvals)
Safety Features Era:
Focus on braking performance and handling; advanced safety features were not common on motorcycles of this era.
Braking System:
Dual front hydraulic disc brakes, single rear hydraulic disc brake.
Suspension:
Telescopic front fork with anti-dive system (Uni-Trak), Monoshock rear suspension (Uni-Trak).
Lighting:
Halogen headlight, taillight, turn signals.
Infotainment System:
N/A (Motorcycle of this era did not feature infotainment systems)
Driver Assistance Features:
N/A (Motorcycle of this era did not feature driver assistance systems)
Connectivity Features:
N/A (Motorcycle of this era did not feature connectivity features)
Engine Management System:
Electronic control unit (ECU) managing fuel injection and ignition timing, incorporating turbocharger boost control.
Dashboard Features:
Analog tachometer, speedometer, fuel gauge, coolant temperature gauge, turbo boost gauge, indicator lights.
Oil Change Interval:
Every 3,000-5,000 km or 6 months (refer to manual for precise intervals).
Valve Clearance Check:
Every 10,000-15,000 km (critical for performance and longevity).
Spark Plug Replacement:
Every 10,000-15,000 km (using correct NGK specifications).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid (refer to manual for specific grade).
Coolant Type:
Ethylene glycol-based antifreeze/coolant (50/50 mix with distilled water recommended).
Turbocharger Reliability:
Early turbo systems can be prone to seal wear or boost leaks if not maintained meticulously. Proper warm-up and cool-down procedures are crucial.
Fuel Injection System:
Older EFI systems can develop issues with sensors, fuel pumps, or injectors. Diagnostic codes and troubleshooting are essential.
Electrical Components:
Age-related degradation of wiring insulation, connectors, and electrical components can lead to intermittent faults.
Anti-Dive Mechanism:
The front suspension's anti-dive mechanism can require servicing or adjustment to function correctly.
Kawasaki Motorsports:
Kawasaki has a long and storied history in motorsports, particularly in racing and performance motorcycles.
Gpz Series:
The GPz series was known for its sportbike styling and performance, with the Turbo model being a technological showcase for its time.
Production Period:
1984-1987 (GPz750 Turbo)
Significance:
One of Kawasaki's early and notable attempts to integrate turbocharging into a production sportbike.
