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General| Transmission | 5-speed manual |
|---|---|
| Front Brake | Disc |
| Rear Brake | Drum |
| Fuel System | Carburetor |
| Engine | 124cc, single-cylinder, 4-stroke |
| Front Suspension | Telescopic fork |
| Starting System | Electric |
| Rear Suspension | Twin shock absorbers |
General instructions for motorcycle operation and maintenance.
Detailed technical specifications for the NAC12 model.
Key operational guidelines and precautions for safe use.
Specifies torque values for critical fasteners and components.
Information pertaining to the motorcycle's chassis structure.
Lists essential tools required for maintenance and repair tasks.
Details the breakdown and function of lubricated components.
Troubleshooting guide for identifying and resolving common engine failures.
Overview of inspection and adjustment procedures for the NAC12 model.
Step-by-step methods for inspecting and adjusting various motorcycle systems.
Inspection and adjustment procedures for the steering mechanism.
Inspection and adjustment procedures for the braking system.
Inspection and adjustment procedures for wheel components.
Inspection and adjustment procedures for suspension components.
Inspection and adjustment procedures for the gearing system.
Inspection and adjustment procedures for lubrication systems.
Inspection and adjustment procedures for the engine.
Inspection and adjustment procedures for the fuel system.
Introduction to engine maintenance and repair.
Important notices regarding engine maintenance procedures.
Procedures for engine disassembly and reassembly.
Specifies torque values for engine components during maintenance.
General maintenance guidelines for the engine.
Detailed steps for comprehensive engine overhauling.
Procedures for disassembling the engine.
Procedures for reassembling and installing the engine.
Overview of the motorcycle's electrical system.
Important notices for maintaining the electrical system.
Troubleshooting guide for common electrical system faults.
Procedures for battery disassembly, fixing, and maintenance.
Guidelines for charging the motorcycle battery.
Important notices for cooling system maintenance.
Troubleshooting common issues within the cooling system.
Standard values and checks for cooling system components.
Information and procedures related to the radiator.
Information and procedures related to the thermostat.
Important notices for front wheel, suspension, and steering maintenance.
Torque specifications for front-end mounting hardware.
Troubleshooting common problems with the front wheel, suspension, and steering.
Information and procedures related to the handlebar.
Information and procedures related to the front wheel.
Information and procedures related to the front suspension.
Information and procedures related to the steering post.
Important notices for rear wheel, fork, and shock absorber maintenance.
Troubleshooting common problems with the rear wheel, fork, and shock absorber.
Regulated torque values for rear-end components.
Information and procedures related to the rear wheel.
Information and procedures related to the rear shock absorber.
Information and procedures related to the rear fork.
Important notices for braking system maintenance.
Troubleshooting common problems within the braking system.
Procedure for extracting brake fluid from the system.
Procedure for bleeding air from the braking system.
Information and procedures specific to the rear brake.
Information and procedures related to the brake disc.
Information and procedures related to the brake oil pump.
Details regarding the correct gap for the disc brake.
Identifies the locations for serial number markings.
Comprehensive technical specifications for the NAC12 model.
Key maintenance data and parameters for the NAC12.
Replace specific components after disassembly for optimal function.
Correct sequence and pattern for tightening fasteners.
Instruction to use a specialized tool for specific tasks.
Cleaning and lubricating parts during reassembly.
Applying specific grease to designated parts.
Verifying all components are correctly fitted and functional post-assembly.
Safety measure to disconnect battery before starting work.
Final verification of connections and assembly.
Correct procedure for connecting the battery anode.
Lubrication step after anodizing process.
Ensuring all connections and ends are properly covered.
Diagnosing and replacing blown fuses with identical specifications.
Securing components with covers and caps post-operation.
Proper method for disconnecting connection pegs to avoid damage.
Standard torque values for common fasteners.
Torque specifications specifically for engine parts.
Torque specifications for chassis mounting bolts.
Lists essential tools required for chassis maintenance.
Specifies parts to use for engine maintenance.
Lubrication instructions for chassis components.
Systematic troubleshooting for engine starting problems.
Troubleshooting engine behavior after initial start.
Diagnosing lack of power at high speeds.
Troubleshooting issues with idle speed and low-speed performance.
Diagnosing generator faults at medium to high speeds.
Troubleshooting steps when there is no spark from the spark plug.
Diagnosing battery charging problems.
Detailed methods for various inspection and adjustment tasks.
Specific inspection and adjustment for the steering device.
Specific inspection and adjustment for the brake device.
Specific inspection and adjustment for electrical components.
Inspection and adjustment of wheel-related components.
Inspection and adjustment of suspension components.
Inspection and adjustment of transmission components.
Inspection and adjustment of engine components.
Checking fuel leak, filter, and capacity.
Checking water leak and radiator condition.
Checking lighting device function.
Checking indicator function and condition.
Checking lock device function.
Checking rearview mirror reflection status.
Checking reflector and chassis for damage.
Checking odometer function.
Checking muffler condition and looseness.
Lubricating chassis parts.
Other maintenance tasks like cleaning exhaust.
Checking steering fork flexibility and deflection.
Adjusting the braking pedal height.
Checking and refilling the brake liquid cup.
Procedures for checking brake disc and plate wear.
Checking wheel air pressure and tightening wheel nuts.
Inspection of the suspension system.
Adjusting the clutch handle distance.
Checking oil levels and for leaks in the lubrication device.
Step-by-step guide for replacing engine oil.
Important warnings regarding chain and sprocket care.
Adjusting idle speed for optimal low-speed performance.
Inspecting, cleaning, or replacing the air filter core.
Adjusting the throttle cable for proper response.
Checking and clearing obstructions in the fuel filter.
Detailed step-by-step guide for engine removal and installation.
Maintenance manual for cylinder head, cylinder, piston, and valve system.
Steps for removing and installing the carburetor.
Procedures for removing and installing the magneto.
Procedures for rocker base removal, installation, and valve adjustment.
Steps for installing and removing the camshaft.
Procedures for removing and installing the cylinder head assembly.
Procedures for removing and installing the cylinder body.
Procedures for removing and installing the clutch assembly.
Steps for removing and installing the oil pump and filter.
Procedures for installing and disassembling the gear shift system.
Procedures for installing and removing the crankshaft.
Visual representation of the engine lubrication system flow.
Visual representation of the engine cooling system components.
Detailed chart showing water pump components and their numbering.
Step-by-step instructions for replacing the engine oil filter.
Basic maintenance requirements for the battery.
Comprehensive troubleshooting guide for electrical system faults.
Diagnosing and resolving issues related to low battery voltage.
Troubleshooting steps for ignition system faults causing no spark.
Diagnosing and fixing starter motor operational failures.
Troubleshooting abnormal engine running conditions.
Diagnosing faults in the second loop of the ignition system.
Troubleshooting causes for dim headlights or lights.
Procedures for battery removal, installation, and fixing.
Safe methods and parameters for charging the battery.
Procedures for testing the regulating rectifier system's functionality.
Inspecting the CDI loop system and fuel supply.
Verifying the integrity of the fuel supplying system.
Testing the ignition switch for continuity.
Checking the function of handlebar controls.
Functionality list for left handlebar switches.
Functionality list for right handlebar switches.
Checking the neutral switch connection.
Checking the clutch switch connection.
Checking the rear brake light switch operation.
Checking the front brake light switch operation.
Replacing the headlight bulb.
Replacing the odometer light bulb.
Diagnosing common failures in the cooling system.
Important notices for cooling system maintenance.
Standard values for cooling system checks.
Instructions for removing and inspecting the radiator.
Step-by-step guide for removing the radiator assembly.
Detailed breakdown of radiator components and inspection points.
Testing the functionality of the radiator fan switch.
Checking radiator core, fins, and soft pipes for issues.
Step-by-step instructions for removing the thermostat.
Step-by-step instructions for installing the thermostat.
Instructions for removing the heat sensor from its housing.
Testing the heat sensor's resistance at a specific temperature.
Checking the water pump mechanism seal for leaks.
Step-by-step instructions for removing the water pump.
Steps to open the thermostat housing cover.
Procedure to remove the thermostat from its housing.
Handling the pressure seal and flat washer during thermostat assembly.
Installing the seal washer and reattaching the thermostat cover.
General notes and precautions for maintaining front-end parts.
Standard values for front wheel, suspension, and steering components.
Torque specifications for mounting bolts related to these components.
Troubleshooting common issues related to the front wheel, suspension, and steering.
Procedures for removing components from the handlebar.
Step-by-step guide for mounting the handlebar onto the fork.
Torque specification for tightening the faceplate bolt.
Torque specification for tightening handlebar mounting bolts.
Inserting the fuel accelerated cable into the grip assembly.
Correct orientation and installation of the brake pump on the handlebar.
Steps for removing the front wheel, soft axle, and odometer axle.
Important notes regarding wheel bearings and disc brake care.
Warning about oil grease affecting braking performance.
Cautionary note about avoiding contact with the brake disc.
Step-by-step guide for installing the wheel axle.
Procedure for installing and torquing the wheel axle nut.
Connecting the odometer's soft axle to speed gears.
Procedures for installing the brake pump assembly.
Testing the brake bar for proper gap clearance.
Procedures for removing front suspension components.
Removing fender and brake pipe from front suspension.
Loosening the face plate bolt.
Loosening the steering bolt.
Installation follows the reverse sequence of removal steps.
Torque specification for tightening the face plate bolt.
Torque specification for tightening the steering bolt.
Steps for removing the front suspension, steering post nut, and face plate.
Steps for installing the steering post, including lubrication and bearing setup.
Torque specification for the steering adjust nut.
Diagnosing common failures in the rear wheel, fork, and shock absorber.
Important maintenance notices for rear components.
Standard values for rear wheel axle bend and jump.
Regulated torque values for rear shock absorber and axle nut.
Step-by-step procedure for removing the rear wheel.
Checking wheel bearing for bending data and replacing if necessary.
Checking rear wheel bearing for looseness, noise, and replacing if needed.
Verifying rear wheel jump within limits for axle and radial directions.
Checking driven sprocket for abrasion or shape issues, and checking main sprocket.
Replacing the cushion pad if it is aged or damaged.
Installing the rear wheel assembly following previous steps.
Steps for removing and installing the rear shock absorber.
Checking the rear fork for damage or cracks.
Checking the chain protector for wear.
Removing the rear wheel, shock absorber, and rear fork.
Installing the rear fork onto the chassis and tightening nuts.
Diagnosing and rectifying poor brake functionality.
Identifying and resolving causes of brake noise.
Addressing handling difficulties or reduced brake effectiveness.
Troubleshooting issues with a single brake's performance.
Checking the brake fluid level by positioning the pump.
Bleeding air from the brake system via the pump.
Inspecting the condition of the disc brake.
Measuring the gap between the disc brake components.
