Market Segment:
Performance off-road/enduro competition motorcycle
Key Competitors:
Yamaha WR250F, Honda CRF250X, Suzuki RM-Z250, Kawasaki KX250
Usp:
Lightweight, agile, powerful two-stroke engine tailored for aggressive off-road riding and competition
Intended Use:
Enduro, trail riding, motocross (with modifications), competitive off-road events
Engine:
Complete engine overhaul, internal components, tuning, and diagnostics
Fuel System:
Carburetor service, fuel delivery, jetting, fuel tank, and fuel lines
Ignition System:
CDI unit, spark plug, ignition timing, and troubleshooting
Cooling System:
Radiator, coolant flow, thermostat, and fan (if applicable)
Exhaust System:
Exhaust pipe, silencer, and related components
Transmission:
Gearbox internals, clutch operation, gear shift mechanism, and lubrication
Clutch:
Clutch assembly, plates, springs, and hydraulic system (if applicable)
Frame:
Frame structure, welds, and component mounting points
Suspension:
Front fork (WP), rear shock absorber (WP), adjustments, and rebuild procedures
Brakes:
Front and rear brake systems (hydraulic disc), caliper service, master cylinders, and fluid replacement
Electrical System:
Wiring diagrams, lighting, battery, starter system (if applicable), and fuse box
Wheels And Tires:
Rim inspection, spoke tension, tire mounting, and balancing
Bodywork And Plastics:
Fairings, seat, fenders, and graphical elements
Maintenance:
Routine servicing, oil changes, filter replacements, chain maintenance, and lubrication
Troubleshooting:
Diagnostic procedures for common and uncommon issues, fault finding charts
Repair:
Step-by-step repair instructions for all major components and systems
Rebuilds:
Engine and gearbox rebuilds, suspension overhauls
Disassembly And Assembly:
Detailed procedures for taking apart and reassembling the motorcycle
Specifications And Torques:
Torque values for all fasteners, clearance specifications, and tolerances
Depth:
Comprehensive, from basic maintenance to full engine rebuilds
Bore X Stroke:
62.5 x 65 mm
Cylinder Arrangement:
Single-cylinder
Cooling System:
Liquid-cooled
Power Valve:
Electronically controlled exhaust power valve (EPV)
Compression Ratio:
8.7:1 (approx.)
Horsepower:
Approx. 38-40 HP (estimated, actual figures vary)
Torque:
Approx. 24-26 Nm (estimated, actual figures vary)
Carburetor:
Keihin PWK 38 Air Stripper
Fuel Type:
Unleaded gasoline with 2-stroke oil (premix)
Premix Ratio:
1:40 or 1:50 (depending on oil manufacturer and riding conditions)
Oil Change Interval:
Refer to manual for specific intervals, typically every 15-20 engine hours for off-road use.
Air Filter Cleaning:
Frequent cleaning/replacement recommended based on riding conditions (e.g., every 5-10 hours)
Spark Plug Replacement:
Refer to manual for recommended intervals; typical for 2-strokes is more frequent than 4-strokes.
Top End Rebuild Interval:
Highly dependent on usage; manual will specify for optimal performance (e.g., 50-100 hours for piston and rings).
Engine Oil Type:
High-quality 2-stroke premix oil (e.g., Motorex, Castrol, etc.)
Transmission Oil Grade:
SAE 10W/15W or SAE 80W gear oil (check manual for specific grade and capacity)
Coolant Type:
Ethylene glycol-based coolant with corrosion inhibitors (e.g., Motorex Coolant M3.0)
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Common Wear Items:
Piston rings, spark plugs, clutch plates, chain and sprockets, wheel bearings, swingarm bearings due to off-road stress.
Power Valve Maintenance:
Carbon buildup can affect power valve operation; requires regular cleaning as per manual.
