Engine:
Engine Disassembly, Engine Overhaul, Engine Reassembly, Engine Timing, Engine Lubrication, Engine Performance Data, Engine Specifications
Fuel System:
Fuel System, Carburetor Assembly, Fuel Pump Replacement, Fuel Filter Replacement, Fuel Pipe
Ignition System:
Ignition System, Spark Plugs, Ignition Coil, Ignition Timing
Cooling System:
Cooling & Frames, Cooling System, Radiator, Radiator Fan, Oil Cooling
Transmission:
Transmission, Transmission Change, Clutch, Disengaging Hydraulic Clutch, Clutch Kit, Clutch Slave Cylinder, Clutch Master Cylinder, Flywheel
Brakes:
Brakes & Electric Systems, Brakes, Brake System, Brake Discs, Brake Pads, Brake Shoes, Rotor, Rotor Replacement, Brake Hose
Suspension And Wheels:
Suspension & Wheels, Frame Suspension, Wheels/Tyres, Tires, Rotate Tires, Alignment, Shocks, Struts, Steering System, Suspension, Suspension System, Axles, Axle Shafts, CV Boots, Hubs, Bearings
Electrical System:
Electric Systems, Fuse Box, Engine Harness, Wiring Harness, Wiring Diagrams, Sensors, Oil Sensor, Pressure Sensor, Oil Pressure Sensor, Volt Meter, Headlight Relay, Starter Relay, Ignition Relay, Alternator, Alternator Pulley, Starter, Battery, Battery Replacement
Frame And Body:
Cooling & Frames, Frame, Body, Frame Suspension, Chassis Wire Harness, Door Handle, Hood Hinge, Hood Latch, Wiper Blade, Wiper Motor, Washer Pump, Fuel Tank Cap, Courtesy Light, Door Jamb Switch, Door Lock, Fuel Filler Neck, Antenna, Body Plug, Body Tappet, Grommet, Spacer, Muffler, Exhaust, Headers, Exhaust Gasket, Catalytic Converter
Frame And Chassis:
Frame, suspension linkages, steering components, subframe.
Routine Maintenance:
Routine Maintenance, Oil Change, Transmission Change, Fluid Change, Air Filter Replacement, Spark Plug Replacement, Brake Pad Replacement, Tire Replacement, Flat Repair
Diagnostics And Troubleshooting:
Troubleshooting problems in your bike, Diagnostic procedures for various systems
Repair And Overhaul:
General Operations, Settings & Adjustments, Engine Overhaul, Engine Reassembly, Clutch Replacement, Rotor Replacement, Starter Replacement, Fuel Pump Replacement, Fuel Filter Replacement, Head Gasket Replacement, Piston Ring Replacement, Valve Train Service, Bearing Replacement
Technical Specifications:
Maintenance and specifications charts, Torque Figures, Torque Specs, Torque Values, Performance Data, Weights, Overall Dimension, Topping UPS Lubrications
Specific Tools:
Specific Tools required for maintenance and repair
Wiring Diagrams:
Includes electrical wiring diagrams for troubleshooting and repair of the electrical system.
Parts Identification:
Likely includes diagrams and part references for identifying various components.
Settings And Adjustments:
Covers settings for carburetor, suspension, clutch, and other adjustable components.
Depth:
Comprehensive instructions and procedures for servicing, diagnosing, and repairing the bike, comparable to what dealership technicians use.
Diagnostics:
Detailed diagnostic procedures for identifying faults in all major systems.
Type:
Liquid-cooled, 2-stroke, Reed valve, Single-cylinder
Displacement:
249cc (approximately)
Bore X Stroke:
Refer to manual for specific dimensions (typically around 66.4 x 72.0 mm)
Compression Ratio:
Refer to manual for specific ratio
Horsepower Estimate:
Estimated 40-45 HP (varies by tuning and exact model configuration)
Torque Estimate:
Refer to manual for specific torque figures
Carburetor:
Typically a Keihin PWK series carburetor (e.g., 38mm).
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Fuel Mixture:
Manual specifies the recommended fuel-to-oil ratio for premixing (e.g., 32:1 or 40:1).
Oil Type:
2-stroke premix oil (Yamalube or equivalent recommended)
Transmission Oil Type:
Yamalube Gear Oil (e.g., 10W-40 or specific Yamalube grade)
Ignition Timing:
Refer to manual for specific ignition timing specifications and adjustment procedures.
Oil Change:
Refer to manual; typically after a set number of riding hours or specific races.
Air Filter Cleaning:
Frequent cleaning/replacement recommended, especially in dusty conditions. Refer to manual for specific intervals.
Spark Plug Replacement:
Refer to manual for recommended replacement intervals based on usage.
Top End Rebuild:
Recommended based on riding hours (e.g., 20-40 hours for piston and rings, longer for cylinder and crank.
Transmission Oil Capacity:
Refer to manual for specific capacity (typically around 0.7 - 1.0 liter).
Coolant Type:
Ethylene glycol-based antifreeze (e.g., Yamalube Coolant or equivalent).
Brake Fluid Type:
DOT 4 brake fluid recommended.
Two Stroke Specifics:
Typical two-stroke wear items: piston, rings, reeds, clutch plates, exhaust packing. Proper jetting and maintenance are crucial.
Suspension Wear:
Fork seals and shock bushings can wear over time, requiring service.
Importance:
Critical for engine and chassis components to ensure proper assembly and prevent failure. Manual provides detailed torque specifications.
