Segment:
Lightweight off-road/dual-sport motorcycle, popular in its era for recreational trail riding and light commuting.
Competitors:
Honda CR125R, Yamaha YZ125, Suzuki RM125 (though KMX was often positioned slightly more towards utility/trail than pure motocross).
Appeal:
Known for its tractable two-stroke power delivery, agile handling, and versatility for off-road adventures.
Manual Value Proposition:
Provides comprehensive, step-by-step guidance for mechanics and DIY enthusiasts to maintain, diagnose, and repair the Kawasaki KMX125.
Engine Systems:
Engine disassembly, assembly, inspection, adjustments, troubleshooting, cylinder head, cylinder, piston, crankshaft, connecting rod, engine balance, cooling system (if applicable for specific models), lubrication system, engine management (ignition, carburetion).
Transmission Drivetrain:
Gearbox disassembly, assembly, inspection, maintenance, lubrication, clutch operation, chain drive maintenance.
Chassis Suspension:
Frame inspection, front fork (telescopic), rear suspension (monoshock or twin shock), swingarm, wheel bearings, steering system maintenance.
Braking System:
Front and rear brake systems (likely drum or disc depending on specific variant), brake fluid replacement, caliper/cylinder service, pad/shoe replacement, adjustment.
Electrical System:
Ignition system (CDI, spark plug), lighting (headlight, taillight, indicators), battery, charging system (stator, rectifier/regulator), wiring diagrams, fuse replacement, switches, starter system (if electric start equipped).
Fuel System:
Carburetor disassembly, cleaning, adjustment, fuel tank, fuel lines, fuel filter replacement.
Bodywork Trim:
Fairings, fenders, seat, fuel tank cover, handlebars, controls removal and installation.
Maintenance Procedures:
Regular servicing, lubrication points, filter replacement, fluid changes, chain adjustment, tire pressure checks, spark plug maintenance.
Troubleshooting Diagnostics:
Diagnostic charts, common problem identification, symptom-based troubleshooting for engine, electrical, and mechanical issues.
Repair Rebuild Procedures:
Detailed step-by-step instructions for component disassembly, cleaning, inspection, repair, and reassembly of all major vehicle systems.
Adjustment Calibration:
Carburetor tuning, ignition timing adjustment, clutch adjustment, brake lever/pedal adjustment, suspension adjustments.
Special Tool Usage:
Identification and usage instructions for specific Kawasaki special tools required for certain repair and adjustment operations.
Depth Of Coverage:
Comprehensive 'bumper to bumper' coverage, including detailed diagnostic information, service data, precautions, factory specifications, allowable limits, and pictorial diagrams.
Engine Type:
Air-cooled, two-stroke, single-cylinder.
Displacement:
124 cc (approximate, specific exact displacement may vary slightly by internal code)
Bore X Stroke:
Details typically found within the manual, often around 56.0 x 50.6 mm.
Compression Ratio:
Specifics usually detailed in the manual, likely around 7.0:1 to 7.5:1.
Horsepower:
Typically in the range of 18-22 HP, depending on tuning and market regulations.
Torque:
Specific torque figures would be available in the manual, essential for clutch adjustment and engine diagnostics.
Carburetor Model:
Likely a Mikuni VM series carburetor, e.g., VM24SS (specific model and jetting detailed in manual).
Fuel Type:
Unleaded gasoline with appropriate 2-stroke oil mixture (ratio specified in manual, commonly 20:1 or 25:1).
Oil Type:
Specific 2-stroke oil is recommended, with performance grades typically API-TC, JASO FD.
Oil Change Interval:
Specific intervals for transmission oil and 2-stroke oil injection (if applicable) are detailed in the manual.
Air Filter Maintenance:
Regular cleaning/replacement intervals, typically based on usage hours or mileage.
Spark Plug Replacement:
Recommended replacement intervals for optimal performance and ignition.
Engine Oil Type:
API-TC, JASO FD rated 2-stroke oil for pre-mix or oil injection systems.
Transmission Oil Type:
Specific gear oil, typically SAE 80 or SAE 10W-40 API GL-4, capacity specified in manual.
Coolant Type:
N/A (Air-cooled engine).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid, as specified by Kawasaki.
Common Wear Items:
Clutch plates, piston rings, spark plugs, chain and sprockets, fork seals, brake pads/shoes.
Potential Problems:
Carburetor jetting issues due to wear or incorrect tuning, exhaust port carbon buildup, cooling fins potentially getting clogged with mud on off-road use.
