Category:
Motocross/Off-Road Competition Motorcycle
Target Audience:
Motocross racers, off-road enthusiasts, mechanics, DIY repairers
Competitors:
Yamaha YZ85, Suzuki RM85, KTM 85 SX (for KX85); Yamaha YZ100 (historically, less direct competition for KX100 in later years)
Performance Focus:
Designed for competitive racing and spirited off-road riding, emphasizing power and handling
Manual Benefit:
Enables owners to perform all necessary maintenance and repairs, maximizing performance and lifespan of the vehicle.
Model Years Covered:
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Estimated Pages:
Approximately 300-500 pages (typical for comprehensive service manuals of this era and type)
Type:
Service and Repair Manual
Engine:
Complete engine overhaul, tuning, carburetor settings, cooling system, lubrication, ignition system
Transmission:
Clutch operation, gearbox disassembly/assembly, gear ratios, maintenance
Chassis:
Frame, suspension (forks, shock absorber), steering, wheels, tires, brakes (front and rear)
Electrical:
Wiring diagrams, lighting system, ignition system components, troubleshooting electrical faults
Fuel System:
Carburetor service and tuning (e.g., Keihin PWK), fuel tank, fuel lines
Cooling System:
Radiator, coolant, water pump, hoses
Exhaust System:
Pipe, silencer inspection and maintenance
Routine Maintenance:
Oil changes, air filter cleaning/replacement, chain adjustment, spark plug inspection/replacement, general lubrication
Troubleshooting:
Diagnostic charts for common performance issues, starting problems, and mechanical faults
Engine Repair:
Top-end rebuild (piston, rings, cylinder), bottom-end inspection, crankshaft, connecting rod service
Suspension Service:
Fork seal replacement, oil changes, shock absorber servicing
Brake System Service:
Brake pad replacement, caliper service, brake fluid bleeding and replacement
Carburetor Tuning:
Jetting recommendations, float height adjustment, idle speed adjustment
Electrical Diagnostics:
Component testing, wiring harness inspection
Depth:
Comprehensive, covering from basic maintenance to full engine and chassis rebuilds
Type:
2-Stroke, Liquid-Cooled
Kx85 Displacement:
84 cc (for KX85)
Kx100 Displacement:
99 cc (for KX100)
Bore Stroke Kx85:
48.5 x 45.8 mm (typical for early models, check specific year)
Bore Stroke Kx100:
52.5 x 45.8 mm (typical for early models, check specific year)
Compression Ratio:
Variable by year, typically around 8.7:1 to 9.2:1
Carburetor:
Keihin PWK35 (typical, may vary by year and model variant)
Horsepower Kx85:
Approx. 24-28 HP (at crankshaft, varies by year)
Horsepower Kx100:
Approx. 27-31 HP (at crankshaft, varies by year)
Torque:
Approx. 15-18 lb-ft (varies by year)
Fuel Type:
Unleaded gasoline (minimum 91 octane recommended)
Fuel Oil Mixture:
50:1 ratio with high-quality 2-stroke oil (e.g., Yamalube 2M, Motul 800)
Wheelbase Kx85:
Approximately 1240 mm (48.8 in) (varies slightly by year)
Wheelbase Kx100:
Approximately 1275 mm (50.2 in) (varies slightly by year)
Curb Weight Kx85:
Approximately 73 kg (161 lbs) (dry weight, varies by year)
Curb Weight Kx100:
Approximately 77 kg (170 lbs) (dry weight, varies by year)
Oil Change Frequency:
Every 10-15 hours of riding or annually. Crankcase oil change interval detailed in manual.
Air Filter Cleaning:
After every few rides, or as dictated by riding conditions (e.g., dusty environments).
Spark Plug Inspection:
Every 10-20 hours of riding. Manual provides specific gap and type.
Top End Rebuild:
Recommended every 40-80 hours of riding, depending on usage intensity and maintenance quality.
Coolant:
Kawasaki specified coolant or equivalent ethylene glycol-based antifreeze (50/50 mix with distilled water).
Transmission Oil:
Kawasaki Verified Gear Oil SAE 80W-90 or equivalent API GL-4.
Fork Oil:
Specific viscosity and quantity detailed in manual (e.g., Showa SS-01 or equivalent, 5W to 10W).
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Carburetor Fouling:
Common in 2-strokes; requires regular cleaning and proper jetting for optimal performance.
Power Valve Sticking:
Can occur due to carbon buildup, necessitating periodic cleaning as per manual instructions.
Suspension Wear:
Seals and bushings can wear over time; requires regular inspection and maintenance.
Manufacturer:
Kawasaki Heavy Industries, Motorcycle division.
Racing Legacy:
Kawasaki has a long-standing history of success in motocross racing across all engine classes.
Kx Lineage:
The KX85 and KX100 are successors to earlier Kawasaki small-displacement motocross bikes, evolving with technological advancements.
Updates 2000-2010:
This period saw refinements in suspension, chassis geometry, engine performance, and styling for both models.
Manufacturing Location:
Primarily Japan, with potential assembly in other global locations.
Motocross Wins:
Kawasaki KX models have a long history of national and international motocross championships, indicating inherent design excellence.
Owner Satisfaction:
Generally high for performance and reliability when properly maintained, as evidenced by community reviews and longevity of the model line.
Emissions:
N/A (Off-road vehicles are typically exempt from stringent road-legal emissions standards)
