Positioning:
Essential reference for owners and mechanics of the 2008 Kawasaki KX125 motocross bike.
Value Proposition:
Provides factory-level detail for DIY repairs, saving time and money compared to dealership service.
Usability:
Designed for both professional mechanics and DIY enthusiasts with clear, sequential instructions.
Comprehensiveness:
Covers virtually every aspect of the vehicle's mechanical and electrical systems.
Description:
Covers all installation, removal, disassembly, assembly, repair, and check procedures.
Type:
Factory Service Repair Manual
Engine:
Complete engine disassembly, assembly, tuning, troubleshooting.
Cooling System:
Radiator, hoses, water pump inspection and repair.
Fuel System:
Carburetor adjustment, cleaning, jetting, fuel tank, fuel lines.
Ignition System:
CDI, ignition coil, spark plug specifications and testing.
Transmission:
Clutch, gearbox, shift mechanism inspection and repair.
Suspension:
Front fork (upside-down), rear shock absorber, linkage system maintenance and rebuild.
Brakes:
Front and rear hydraulic disc brake systems, caliper, master cylinder, brake lines, bleeding procedures.
Electrical System:
Wiring diagrams, lighting, battery, stator, regulator/rectifier.
Chassis:
Frame, subframe, swingarm inspection and alignment.
Wheels Tires:
Spoke tension, wheel bearing replacement, tire pressure specifications.
Maintenance:
Scheduled maintenance checks, oil changes, filter replacements, chain adjustment.
Troubleshooting:
Diagnostic flowcharts for common starting, running, and performance issues.
Repair:
Step-by-step instructions for component repair and replacement.
Disassembly Assembly:
Detailed breakdown and reassembly of all major components.
Technical Specifications:
Torque values, clearances, tolerances, fluid capacities, electrical resistances.
Depth:
Comprehensive, from basic rider maintenance to full engine rebuilds and advanced diagnostics.
Engine Type:
2-stroke, liquid-cooled, single cylinder
Displacement:
124 cm³ (7.57 cu in)
Bore X Stroke:
54.0 x 54.5 mm (2.13 x 2.15 in)
Compression Ratio:
9.2:1 (high performance)
Valve System:
2-stroke reed valve
Power Delivery:
Aggressive, peaky powerband characteristic of a competitive motocross engine.
Horsepower:
Approx. 35-40 HP (Estimate based on class competitors, manual will have exact figures)
Torque:
Not typically advertised for this class, but optimized for mid-range and top-end power.
Carburetor:
Keihin PWK38S, single
Fuel Type:
Unleaded gasoline
Fuel Mix:
Pre-mix (specified ratio in manual, typically 20:1 or 32:1)
Length:
Approx. 2145 mm (84.4 in)
Width:
Approx. 815 mm (32.1 in)
Height:
Approx. 1260 mm (49.6 in)
Dry Weight:
Approx. 92 kg (202.7 lbs)
Curb Weight:
Not directly applicable as typically measured without fluids/fuel.
Fuel Capacity:
8.0 L (2.1 gal)
Wheelbase:
Approx. 1475 mm (58.1 in)
Ground Clearance:
Approx. 345 mm (13.6 in)
Seat Height:
Approx. 970 mm (38.2 in)
Crash Safety:
Not applicable (motocross off-road vehicle, no road safety ratings).
Braking:
Powerful dual hydraulic disc brakes for effective stopping power.
Handling:
Designed for high-speed stability and precise cornering.
Ergonomics:
Rider-focused controls and seating position for improved rider control and confidence.
Oil Change:
Refer to manual for specific hours/miles; typically every 5-10 hours of hard use for 2-stroke gearbox oil.
Air Filter Cleaning:
After every few rides or as needed based on conditions; critical for 2-stroke performance.
Spark Plug Inspection:
Regularly, especially if experiencing running issues.
Chain Maintenance:
Lubricate and adjust tension after every few rides.
Engine Oil:
2-stroke premix oil (specific brands/viscosity recommended in manual).
Gearbox Oil:
SAE 10W-30 API GL-4 transmission oil (manual will specify exact type and capacity).
Coolant:
Proprietary Kawasaki coolant or equivalent ethylene glycol-based coolant with antifreeze and anti-corrosion additives.
Engine Wear:
Piston ring and cylinder wear are common in high-performance 2-strokes with extensive use; manual details wear limits.
Carburetor Tuning:
Sensitivity to altitude, temperature, and humidity requires periodic jetting adjustments.
Suspension Seals:
Fork and shock seals can wear over time, leading to fluid leaks; manual covers seal replacement.
Heritage:
Kawasaki has a long and successful history in professional motocross, with the KX line being a dominant force.
Kx125 Lineage:
The KX125 has undergone continuous development, evolving from early designs to the sophisticated motocross machine of 2008.
2008 Updates:
The 2008 model received refinements focusing on chassis, suspension, and engine performance for increased competitiveness.
Production Years:
The KX125 model has been produced for many years, with significant updates occurring throughout its lifecycle.
