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General| Displacement | 49cc |
|---|---|
| Fuel System | Carburetor |
| Ignition | CDI |
| Front Suspension | Telescopic fork |
| Front Brake | Drum |
| Rear Brake | Drum |
| Bore x Stroke | 40.0 mm x 39.2 mm |
| Starting System | Kick |
| Rear Suspension | Swingarm |
Explains the automatic transmission mechanism and its operation.
Details frame and engine serial number locations and identification.
Provides dimensional views and specifications for the vehicle.
Lists detailed technical specifications for the LB50 II AC and LB80 II AC.
Covers basic dimensions, weight, engine type, and lubrication.
Details engine, crankshaft, and piston specifications for maintenance.
Specifies torque values for standard fasteners with ISO pitch threads.
Illustrates how to route various cables and wires on the motorcycle.
Lists and illustrates special tools required for tune-up and service.
Outlines the importance of preventive maintenance for reliability and service life.
Lists specific tools needed for periodic inspections and adjustments.
Provides a schedule for regular maintenance tasks and checks.
Details intervals and types of lubrication for various components.
Covers maintenance for the carburetor, air cleaner, and oil systems.
Instructions for carburetor inspection, adjustment, and cleaning.
Procedure for cleaning and maintaining the air cleaner element.
Steps for bleeding and adjusting the autolube oil pump.
Guidance on checking and changing engine and transmission oil.
Procedure for checking and tightening cylinder head nuts.
Maintenance procedures for chassis components like brakes and chain.
Instructions for cleaning the fuel filter in the petcock.
Adjusting front brake free play and checking the front axle.
Adjusting rear brake free play and checking the rear axle.
Procedures for adjusting drive chain tension and lubrication.
Performing checks on suspension, steering head, and swing arm.
Checks for spark plug, battery, and headlight adjustment.
How to inspect the spark plug condition, type, and gap.
Procedures for checking battery fluid level and connections.
How to adjust the headlight beam horizontally and vertically.
Steps for preparing the engine for removal and disassembly.
Detailed steps for disassembling engine components.
Steps for removing and inspecting the reed valve assembly.
Procedures for removing the cylinder head and cylinder.
Steps for removing the piston pin and piston from the cylinder.
How to remove the right side crankcase cover.
Procedures for removing the clutch and primary gear assemblies.
Steps for removing the kick starter axle assembly.
Procedure for removing the shifter rod assembly.
Instructions on how to split the crankcase halves.
How to remove the transmission shafts assembly.
Detailed inspection and repair procedures for engine parts.
How to check for warpage and resurface the cylinder head.
How to hone and measure the cylinder bore for wear.
Checking the piston pin and bearing for wear and damage.
Procedures for cleaning and measuring the piston and its components.
How to check piston rings for scoring, end gap, and side clearance.
Inspecting the construction and function of the autolube oil pump.
How to measure clutch shoe lining thickness and inspect components.
Checking kick starter gear and ratchet wheel for wear and damage.
Inspecting gears and shifter rod assembly for wear and damage.
Checking crankshaft for axial play, side clearance, and runout.
Procedures for inspecting and removing bearings and oil seals.
Steps for assembling and adjusting the engine components.
Procedure for installing the crankshaft into the crankcase halves.
Steps for assembling the transmission shafts and related parts.
Instructions for assembling the crankcase halves.
Steps for installing the shifter rod and related components.
Procedure for installing the kick starter mechanism.
Steps for installing primary gears and clutch assemblies.
Describes the air filter housing, material, and function.
Details the carburetor components and general operation.
Explains the carburetor's role in engine operation and disassembly preparation.
Step-by-step instructions for disassembling the carburetor.
Common problems, causes, and solutions for carburetor issues.
Specific steps to disassemble the carburetor's mixing chamber.
Instructions for reassembling and installing the carburetor.
Description of the reed valve's design and construction.
Details the unique stainless steel reed valve design and its parts.
Procedures for removing and reassembling the reed valve assembly.
How to check the insulator mating surfaces for warpage.
Procedures for front wheel removal, axle, brake check, and installation.
Step-by-step instructions to remove the front wheel.
How to check the front axle for corrosion and bending.
Procedure for measuring front brake lining thickness and replacement limit.
Inspecting the brake drum for oil or scratches affecting performance.
Steps for removing and installing front wheel bearings.
Procedures for installing the front wheel, axle, and connecting cables.
Procedures for rear wheel removal, brake check, and installation.
Step-by-step instructions to remove the rear wheel assembly.
Procedure for measuring rear brake lining thickness and replacement limit.
Inspecting the rear brake drum for issues affecting performance.
Steps for removing and installing rear wheel bearings.
Procedures for installing the rear wheel, axle, and connecting components.
Procedures for removing and installing tires and tubes.
Steps for removing tires and tubes from the wheel rim.
Instructions for installing tires and tubes, including inflation.
Procedures for drive and driven sprocket maintenance and chain inspection.
How to inspect the drive sprocket for wear and replace it.
How to inspect the driven sprocket for wear and ensure it runs true.
Checking the chain for wear, stiffness, and damage.
Procedures for lubricating and maintaining the drive chain.
Procedures for front fork disassembly, inspection, and assembly.
Steps for disassembling the front fork tubes and components.
Inspecting inner tubes, slide metal, and pistons for wear.
Procedures for reassembling the front forks, including oil filling.
Procedures for adjusting, disassembling, inspecting, and installing the steering head.
How to adjust the steering head for proper tightness and movement.
Steps for disassembling the steering head components.
How to inspect steering head balls, races, and dust seals.
Procedures for removing steering head races from the frame.
Steps for installing new races and assembling the steering head.
Identifies and lists electrical components with their resistance specifications.
Procedures for checking electrical connectors for corrosion and continuity.
Covers ignition system circuit diagram and troubleshooting.
Schematic diagram of the ignition system wiring.
Guide for diagnosing and fixing ignition system failures like no spark.
Covers charging system circuit diagram and troubleshooting.
Schematic diagram of the charging system wiring.
Guide for diagnosing battery charging issues.
Covers lighting system circuit diagram and troubleshooting.
Schematic diagram of the lighting system wiring.
Guide for diagnosing lighting system failures (headlight, tail, meter).
Covers signal system circuit diagram and troubleshooting.
Schematic diagram of the signal system wiring.
Guide for diagnosing signal system failures (flasher, brake, horn).
Comprehensive guide for diagnosing and resolving common performance issues.
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