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ADLY MOTO GK-125R User Manual

ADLY MOTO GK-125R
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SERVICE MANUAL
GK-125R92/61
July 04
High Power Engine
HER CHEE INDUSTRIAL CO., LTD.

Table of Contents

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ADLY MOTO GK-125R Specifications

General IconGeneral
BrandADLY MOTO
ModelGK-125R
CategoryOffroad Vehicle
LanguageEnglish

Summary

SERVICE MANUAL

TROUBLESHOOTING ENGINE PERFORMANCE

Revolution Not Smooth, Lost Power

Diagnosing and resolving issues with smooth engine operation and power loss.

Revolution Not Stable (Low RPM)

Diagnosing and resolving engine instability at low RPM.

Revolution Not Smooth (High Speed)

Diagnosing and resolving engine issues at high speeds.

TROUBLESHOOTING ELECTRICAL SYSTEM

Charge Abnormal

Diagnosing and resolving issues with the battery charging system.

Spark Plug No Sparking

Diagnosing and resolving ignition problems related to the spark plug.

CHECK AND ADJUST: Engine Specifications

Maintenance Schedule

Routine maintenance schedule based on mileage for various components.

Valve Adjusting Procedure

Steps for checking and adjusting valve clearance.

Front Brake System

Checks and maintenance for the front brake system, including pads and fluid.

Rear Brake System

Checks and maintenance for the rear brake system, including pads and disk.

LUBRICANT SYSTEM

Oil Quantity Reduction Issues

Diagnosing causes of reduced oil quantity.

Engine Oil Burn Issues

Diagnosing causes of engine oil burning.

Engine Oil and Filter Check

Procedure for checking engine oil level and changing oil and filter.

Oil Pump Disassembly and Check

Disassembling the oil pump and checking internal clearances.

Oil Pump Assembly and Installation

Assembling and installing the oil pump assembly.

FUEL SYSTEM

Start-up Function Abnormalities

Diagnosing problems during engine start-up.

Fuel/Air Mixture Issues

Diagnosing issues with too much or too thin fuel/air mixture.

Carburetor Removal

Steps for removing the carburetor from the engine.

Carburetor Mounting and Adjustment

Mounting the carburetor and adjusting fuel/idle screws.

ENGINE REMOVAL

Engine Disassembly Operations

Operations to perform after engine disassembly.

Engine Disassembly Steps

Disassembly of external covers, throttle valve, and cable.

CYLINDER HEAD AND VALVE SYSTEM

Idle Speed Not Stable Diagnosis

Diagnosing causes for unstable idle speed.

Compression Pressure Issues

Diagnosing low or high compression pressure.

Camshaft Removal Procedure

Steps for removing the camshaft, including timing marks.

Cylinder Head Assembly

Assembling the cylinder head with valves, seals, and springs.

Camshaft Holder Installation

Installing the camshaft holder, aligning timing marks, and securing bolts.

CYLINDER AND PISTON SYSTEM

Piston Compression Issues

Diagnosing low or high compression pressure related to pistons and rings.

Exhaust Smoke and Piston Noise

Diagnosing white smoke exhaust and piston noise.

Cylinder Removal Procedure

Steps for removing the cylinder, gasket, and dowel pins.

Piston Removal and Inspection

Removing the piston pin and piston, checking for damage.

TRANSMISSION AND KICK START SYSTEM

Vehicle Not Moving After Start

Diagnosing why the vehicle doesn't move after the engine starts.

FINAL TRANSMISSION SYSTEM

Vehicle Not Moving Diagnosis

Diagnosing transmission gear issues causing the vehicle not to move.

Transmission Gearbox Disassembly

Steps for disassembling the transmission gearbox, including cover and shaft checks.

CRANKCASE AND CRANKSHAFT SYSTEM

Crankcase Disassembly Procedure

Steps for disassembling the crankcase, including cam chain tensioner and gears.

FRONT WHEEL, SUSPENSION, BRAKE, STEERING

Trouble Diagnosis: Steering and Brake

Diagnosing heavy steering, poor brake efficiency, and steering handle issues.

REAR WHEEL, SUSPENSION, BRAKE

BATTERY, CHARGE, AND IGNITION SYSTEM

Electrical System Troubleshooting

Diagnosing common electrical problems like no power, low voltage, or no current.

Battery Charging Procedure

Procedure for charging the battery safely and effectively.

IGNITION SYSTEM

Checking and servicing the ignition system components.

STARTING SYSTEM

Starting System Failure Diagnosis

Diagnosing and resolving starting system failures.

Starter Motor Service

Procedures for removing and installing the starting motor.

ELECTRICAL DIAGRAM

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