Model Variant:
ZXR750 H1, H2, J1, J2, K1, K2, L1, L2, M1, M2, N1, N2
Engine Code Family:
ZX750
Chassis Code Family:
ZX750
Positioning:
The Kawasaki ZXR750 was a landmark sportbike of its era, known for its race-bred technology and aggressive styling. This manual targets owners and technicians seeking to maintain, repair, or restore these high-performance machines.
Competitors:
Competed directly with iconic superbikes like the Yamaha FZR750R/YZF750, Honda CBR750RR/CBR1000RR, and Suzuki GSX-R750. The ZXR750 distinguished itself with its advanced chassis and potent engine.
Bike Highlights:
Liquid-cooled inline-four engine, DOHC, four valves per cylinder, advanced aluminum perimeter frame, powerful braking systems, sophisticated suspension.
Value:
Provides essential information for keeping the ZXR750 in optimal condition, crucial for enthusiasts and collectors.
Years Covered:
1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Specific Models Covered:
ZXR750 (ZX750 H1, H2), ZXR750R (ZX750J1, J2), ZXR750 (ZX750K1, K2), ZXR750 (ZX750L1, L2), ZXR750 (ZX750M1, M2), ZXR750 (ZX750N1, N2)
Type:
Workshop Service Repair Manual
Engine:
Complete overhaul, top-end, bottom-end, lubrication, cooling, fuel injection, ignition, starting, charging
Transmission:
Clutch, gearbox, shift mechanism, maintenance, repair
Chassis:
Frame, swingarm, steering head, wheels, hubs, spokes, suspension (front forks, rear shock absorber)
Brakes:
Front and rear brake systems, master cylinders, calipers, brake lines, hydraulic system, disc replacement
Electrical:
Wiring diagrams, battery, alternator, starter motor, lighting, indicators, ignition system, control units, troubleshooting
Fuel System:
Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, throttle body, troubleshooting fuel delivery issues
Exhaust System:
Exhaust manifold, mufflers, catalytic converter (if applicable), inspection and replacement
Bodywork And Fittings:
Fairings, seat, handlebars, footpegs, body panels, removal and installation
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, lubrication, brake fluid flush, coolant flush
Troubleshooting:
Diagnostic procedures for common issues, electrical faults, engine performance problems
Repair:
Step-by-step repair instructions for all major components and systems
Rebuilds:
Engine rebuild procedures, carburetor/fuel injection system overhauls, suspension component rebuilding
Adjustments:
Valve clearance, carburetor synchronization, ignition timing (where applicable), suspension sag
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts
Detail Level:
Detailed exploded diagrams, torque specifications, clearances, electrical schematics
Engine Type:
4-stroke, liquid-cooled, DOHC, inline-four
Displacement:
749 cc (45.7 cu in)
Bore X Stroke:
73.0 x 44.7 mm (2.87 x 1.76 in)
Compression Ratio:
11.7:1 (Varies slightly by model year/variant)
Horsepower:
Approx. 100-107 hp @ 11,000 rpm (Varies by market and model year)
Torque:
Approx. 70-73 Nm (52-54 lb-ft) @ 9,000 rpm (Varies by market and model year)
Fuel Delivery:
Carbureted (Mikuni VM29SS, 4x) for early models, Fuel Injection (KEIHIN) for later models (e.g., L/M/N series)
Fuel Type:
Unleaded gasoline, 95-98 RON
Oil Capacity With Filter:
Approx. 3.6 Liters (3.8 US qt)
Coolant Type:
Ethylene glycol-based coolant, 50/50 mix with distilled water
Ignition System:
Digital CDI with electronic advance
Safety Ratings:
N/A (Motorcycles are not typically rated by organizations like NHTSA or IIHS)
Braking System:
Dual 320mm discs with 4-piston calipers (front), Single 230mm disc with 2-piston caliper (rear)
Suspension Features:
Adjustable front forks (preload, compression, rebound damping), adjustable rear shock absorber (preload, compression, rebound damping)
Lighting:
Halogen headlight, LED tail light (later models)
Tires:
Front: 120/70ZR17, Rear: 180/55ZR17 (Typical specification, check manual for exact fitment)
Oil Change Interval:
Every 6,000 km (3,700 miles) or annually
Oil Filter Replacement:
With every oil change
Air Filter Cleaning:
Every 12,000 km (7,500 miles) or as needed based on operating conditions
Spark Plug Replacement:
Every 12,000 km (7,500 miles)
Valve Clearance Check:
Every 24,000 km (15,000 miles)
Coolant Flush:
Every 24,000 km (15,000 miles) or every 2 years
Brake Fluid Flush:
Every 12,000 km (7,500 miles) or every 2 years
Engine Oil Specification:
SAE 10W-40, API SG or higher (JASO MA recommended for wet clutch compatibility)
Engine Oil Part Number:
Refer to OEM or equivalent (e.g., KAWASAKI 10W-40, MOTUL 5100 10W-40)
Coolant Specification:
Kawasaki Coolant (or equivalent high-quality ethylene glycol coolant), 50/50 with distilled water
Brake Fluid Specification:
DOT 4 hydraulic brake fluid
Common Problems:
Cam chain tensioner noise, carburetor synchronization issues (on carbed models), starter clutch wear, suspension seal leaks, electrical connector corrosion.
Typical Repairs:
Replacement of cam chain tensioner, carburetor diaphragm replacement, stator/regulator issues, fork seal replacement.
Kawasaki Legacy:
Kawasaki has a strong heritage in motorcycle racing and performance, dating back to the 1960s. The ZXR line solidified their reputation in the sportbike category.
Zxr750 Generations:
The ZXR750 underwent significant evolution through its production run, with key updates including: H1/H2 (early models), J1/J2 (R model with larger carbs and engine tuning), K1/K2 (improved chassis and suspension), L1/L2 (introduction of fuel injection on some variants, revised styling), M1/M2 (further refinements), N1/N2 (final iterations, updated bodywork and electronics).
Production Period:
1989-1996
Manufacturing Origin:
Japan
Wsbk Influence:
The ZXR750, particularly the 'R' variants, was built with homologation for World Superbike (WSBK) racing in mind, featuring race-oriented components and design.
