Market Position:
Essential resource for owners and technicians of the 1992-1993 Kawasaki KX125 and KX250 motocross bikes, covering a critical era of performance development.
Competitive Analysis:
Factory service manuals are the gold standard for repair documentation, offering a level of detail and accuracy often not found in aftermarket manuals. This manual provides factory-backed procedures for precise maintenance and repair.
Key Features:
Comprehensive coverage, factory accuracy, digital accessibility, detailed diagrams and illustrations, troubleshooting guides.
Coverage:
All repairs and servicing
Page Count:
Not specified in product information, but expected to be extensive for factory service manual
Manual Type:
Factory Service & Repair Workshop Manual
Format:
Digital Download (Computer, Tablet, Smartphone compatible)
Engine:
Top-end overhaul, bottom-end assembly, carburetor tuning, cooling system, lubrication, ignition system, exhaust system
Transmission:
Clutch operation and adjustment, gearbox inspection and repair, shifting mechanism, final drive sprocket and chain maintenance
Chassis Suspension:
Front fork service and adjustment, rear shock absorber overhaul and replacement, swingarm pivot and bearings, steering head bearings
Brakes:
Front and rear brake system maintenance, hydraulic fluid replacement, caliper inspection and service, brake pad replacement, bleeding procedure
Electrical:
Ignition system troubleshooting, lighting circuits, wiring diagrams, battery maintenance, CDI unit checks
Bodywork Frame:
Frame inspection and repair, plastics and body panels, seat removal and installation, fuel tank maintenance
Preventative Maintenance:
Regular servicing, lubrication points, filter replacement, chain adjustment, spark plug checks, coolant checks
Troubleshooting:
Diagnostic charts for common performance issues, starting problems, overheating, and electrical faults
Repair Rebuild:
Step-by-step instructions for engine rebuilds, transmission overhauls, suspension component replacement, and electrical system repairs
Component Disassembly Reassembly:
Detailed procedures for dismantling and reassembling all major vehicle components
Depth:
Comprehensive, from basic adjustments to complete engine and chassis rebuilds, suitable for professional mechanics and advanced enthusiasts
File Format:
Likely PDF, optimized for digital devices; high-resolution scans of original factory documentation
Print Quality:
N/A (Digital)
Binding Type:
N/A (Digital)
Paper Type:
N/A (Digital)
Searchability:
Typically includes searchable text layers in PDF format for quick information retrieval
Licensing:
Perpetual license for use on personal devices, no expiry dates, no additional fees
Engine Type:
Liquid-cooled, 2-stroke, single-cylinder
Displacement:
123 cc (7.5 cu in)
Bore X Stroke:
56.0 x 50.6 mm (2.20 x 1.99 in)
Compression Ratio:
Approx. 8.7:1 (varies slightly by market/tune)
Carburetion:
Mikuni VM28SS (or similar)
Engine Type:
Liquid-cooled, 2-stroke, single-cylinder
Displacement:
249 cc (15.2 cu in)
Bore X Stroke:
66.4 x 72.0 mm (2.61 x 2.83 in)
Compression Ratio:
Approx. 8.2:1 (varies slightly by market/tune)
Carburetion:
Mikuni VM34SS (or similar)
Horsepower Kx125:
Approx. 35-38 HP (estimated, unverified)
Horsepower Kx250:
Approx. 45-48 HP (estimated, unverified)
Fuel Type:
Unleaded gasoline (minimum 91 octane recommended)
Oil Mixing:
2-stroke pre-mix oil, typically 32:1 or 40:1 ratio (refer to manual for exact specification)
Coolant Type:
Ethylene glycol-based coolant, pre-mixed with distilled water (50/50 ratio typical)
Overall Length Kx125:
Approx. 2,135 mm (84.1 in)
Overall Length Kx250:
Approx. 2,175 mm (85.6 in)
Wheelbase Kx125:
Approx. 1,450 mm (57.1 in)
Wheelbase Kx250:
Approx. 1,465 mm (57.7 in)
Ground Clearance Kx125:
Approx. 330 mm (13.0 in)
Ground Clearance Kx250:
Approx. 335 mm (13.2 in)
Dry Weight Kx125:
Approx. 95 kg (209 lbs)
Dry Weight Kx250:
Approx. 104 kg (229 lbs)
Safety Ratings:
N/A (Motocross bikes are not subject to typical road vehicle safety ratings)
Active Safety Features:
Effective braking system, responsive suspension for control
Passive Safety Features:
Reinforced frame structure, protective body panels (limited compared to street bikes)
Infotainment System:
N/A (Pure motocross bike, no infotainment features)
Driver Assistance Systems:
N/A (Pure motocross bike, no electronic rider aids)
Connectivity Features:
N/A (Pure motocross bike, no connectivity features)
Engine Management System:
Mechanical carburetor with CDI (Capacitor Discharge Ignition) ignition system.
Top End Rebuild:
Recommended every 20-40 hours of riding, depending on riding style and conditions (refer to manual for specific guidance)
Spark Plug Replacement:
Check every 10 hours, replace as needed (e.g., NGK BR9EG or equivalent)
Air Filter Cleaning:
Clean after every ride or as per manual's recommendation, re-oil with specific air filter oil.
Coolant Replacement:
Flush and replace coolant annually or every 100 hours of operation.
Engine Oil:
2-stroke pre-mix oil (e.g., Motul 800 2T, Castrol TTS, or manufacturer-specified)
Transmission Oil:
SAE 80W/90 API GL-4 or GL-5 gear oil (capacity approx. 0.7L - 0.8L, check manual)
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (refer to manual for specific DOT rating)
Known Issues:
Common issues for this era include wear on clutch plates, carburetor jetting sensitivity to altitude/temperature, potential for crank seal leaks, and normal wear and tear on suspension components. Piston and ring wear is common with high hours.
Carburetor Issues:
Proper jetting is crucial for optimal performance and preventing engine damage. Carburetor slides can wear, affecting throttle response.
Suspension Wear:
Fork seals and bushings, as well as rear shock linkage bearings, can wear over time and require regular servicing.
Brand Heritage:
Kawasaki has a long and successful history in motocross racing, consistently producing competitive and technologically advanced 'KX' series motorcycles.
Model Evolution:
The 1992-1993 KX125 represented a significant development phase, often featuring revised engine tuning, improved suspension components (like Kayaba or Showa forks and rear shocks), and chassis refinements based on racing feedback.
Model Evolution:
Similarly, the KX250 of this era saw continuous improvement in power delivery, suspension performance, and handling, aiming to compete at the highest levels of professional motocross.
Production Period:
Kawasaki has produced KX-series motocross bikes continuously since the 1970s.
