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Sym ALA125CC User Manual

Sym ALA125CC
178 pages
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SYM 1. GENERAL INFORMATION/TROUBLE DIAGNOSIS
1-1
SYMBOLS AND MARKS....................1-1
GENERAL SAFETY............................1-2
SERVICE PRECAUTIONS.................1-3
SPECIFICATIONS..............................1-9
TORQUE VALUES (ENGINE)..............1-10
TORQUE VALUES (FRAME)............... 1-11
TROUBLES DIAGNOSIS .....................1-12
LUBRICATION POINTS.......................1-16
SYMBOLS AND MARKS
Symbols and marks are used in this manual to indicate what and where the special service are
needed, in case supplemental information is procedures needed for these symbols and marks,
explanations will be added to the text instead of using the symbols or marks.
Warning
Means that serious injury or even death may result if procedures are not
followed.
Caution
Means that equipment damages may result if procedures are not followed.
Engine oil
Limits to use SAE 10W-30 API SH/CD class oil. Warranty will not cover the
damage that caused by not apply with the limited engine oil.
Grease
King Mate G-3 is recommended.
Locking sealant
Apply sealant, medium strength sealant should be used unless otherwise
specified.
Oil seal
Apply with lubricant.
Renew
Replace with a new part before installation.
Brake fluid
Use recommended brake fluid DOT3 or WELLRUN brake fluid.
Special tools
Special service tools.
Correct
Meaning correct installation.
Wrong
Meaning wrong installation.
Indication
Indication of components.
Directions
Indicates position and operation directions.
Components assembly directions each other.
Indicates where the bolt installation direction, --- means that bolt cross
through the component (invisibility).
Question and Answer IconNeed help?

Do you have a question about the Sym ALA125CC and is the answer not in the manual?

Sym ALA125CC Specifications

General IconGeneral
Fuel SystemCarburetor
CoolingAir Cooled
TransmissionAutomatic CVT
Front BrakeDisc
Rear BrakeDrum
Seat Height770 mm
Engine124.6cc, Single Cylinder, 4-Stroke
Length x Width x Height1, 900 mm x 700 mm x 1, 100 mm

Summary

General Information and Trouble Diagnosis

Symbols and Marks

Explains symbols and marks used in the manual for service indications.

General Safety

Provides crucial safety precautions for operating and servicing the vehicle.

Service Precautions

Outlines important precautions for servicing the motorcycle to prevent damage.

Specifications

Lists technical specifications for the vehicle, including dimensions and capacities.

Torque Values (Engine)

Specifies torque values for various engine bolts and nuts during assembly.

Torque Values (Frame)

Specifies torque values for various frame bolts and nuts during assembly.

Troubles Diagnosis

Provides diagnostic flowcharts for common engine starting and performance issues.

Lubrication Points

Illustrates key lubrication points on the motorcycle for maintenance.

A.C. Generator and Starting Clutch

Mechanism Diagram

Exploded view illustration of the A.C. generator and starting clutch components.

Precautions in Operation

Details critical precautions for operating and servicing the A.C. generator.

A.C. Generator Removal

Step-by-step instructions for removing the A.C. generator assembly.

Right Crankcase Cover Removal

Procedure for removing the right crankcase cover for access.

Starting Clutch

Covers removal, inspection, and installation of the starting clutch system.

Crankcase and Crankshaft

Mechanism Diagram

Illustration showing the exploded view of the crankcase and crankshaft components.

Operational Precautions

Safety and operational guidelines before servicing the crankcase/crankshaft.

Trouble Diagnosis

Lists common engine noises and their potential causes related to bearings.

Disassembly of Crankcase

Procedure for disassembling the crankcase to access internal components.

Crankshaft Inspection

Details on inspecting crankshaft clearances, run-out, and bearings.

Assembly of Crankcase

Instructions for reassembling the crankcase after servicing.

Body Cover

Maintenance Information

Outlines the sequence for disassembling body covers and general precautions.

Handle Cover

Procedure for removing and installing the front and rear handle covers.

Front Cover

Steps for removing and installing the main front body cover.

Under Cover

Instructions for removing and installing the under body cover.

Front Inner Box

Details on removing and installing the inner box located in the front body.

Body Cover/Rear Fender

Procedure for removing and installing the main body cover and rear fender.

Front Center Cover

Instructions for removing and installing the front center cover.

Luggage Box

Steps for removing and installing the luggage box and seat assembly.

Floor Panel

Procedure for removing and installing the floor panel.

Brake System

Mechanism Diagrams

Illustrations of front disc, front drum, and rear drum brake systems.

Maintenance Information

Precautions, specifications, and torque values for brake system maintenance.

Trouble Diagnosis

Lists common brake problems and their probable causes for disc and drum brakes.

Hydraulic Brake System Inspection

Steps for inspecting the hydraulic brake system for leaks and proper function.

Brake Fluid Replacement and Air Bleeding

Procedure for replacing brake fluid and bleeding air from the hydraulic system.

Brake Caliper

Details on removing, replacing brake linings, and installing the brake caliper.

Brake Disc

Inspection procedures for wear, thickness, deformation, and bending of the brake disc.

Brake Master Cylinder

Instructions for removing, inspecting, and assembling the brake master cylinder.

Drum Brake-Drum

Procedures for removing, inspecting, and cleaning the drum brake components.

Brake Panel

Steps for removing and installing brake shoes, springs, and brake cam.

Steering, Front Wheel, and Front Shock Absorber

Mechanism Diagram

Exploded view of steering, front wheel, and front shock absorber components.

Precautions in Operation

Safety guidelines and torque values for steering and suspension components.

Trouble Diagnosis

Lists potential issues with steering, suspension, and wheel alignment.

Steering Handle

Procedure for removing and installing the handlebar assembly.

Front Wheel

Instructions for removing, inspecting, and installing the front wheel.

Front Shock Absorber

Procedure for removing and installing the front shock absorbers.

Front Fork/Steering Column

Instructions for removing and installing the front fork and steering column.

Rear Wheel and Rear Shock Absorber

Mechanism Diagram

Illustration of rear wheel, exhaust muffler, and rear shock absorber components.

Precautions in Operation

Guidelines and torque values for rear wheel and shock absorber maintenance.

Trouble Diagnosis

Lists common issues related to rear wheel wobbling, shock absorber, and braking.

Exhaust Muffler

Procedure for removing and installing the exhaust muffler.

Rear Wheel

Inspection and removal procedures for the rear wheel.

Rear Shock Absorber

Instructions for removing and installing the rear shock absorber.

Electrical Equipment

Mechanism Diagram

Diagram showing the location of major electrical components on the motorcycle.

Precautions in Operation

General safety precautions for electrical system maintenance and component handling.

Specification

Lists specifications for battery, alternator, ignition, and starting systems.

Trouble Diagnosis

Diagnostic guide for common electrical system issues like charging, ignition, and starting.

Charging System

Details on charging wire diagram, current leakage inspection, and voltage checks.

Ignition System

Information on ignition system circuit, CDI unit, ignition coil, and pulse generator checks.

Starting System

Procedures for inspecting and servicing the starting magnetic switch and motor.

Meter

Instructions for removing and installing the instrument meter assembly.

Light/Bulbs

Procedure for replacing headlight and signal light bulbs, including beam adjustment.

Main Switch/Horn

Check and replacement procedures for the main switch and horn.

Fuel Unit

Instructions for removing, installing, and checking the fuel unit and its resistance.

Maintenance Information

Precautions in Operation

General safety guidelines and specifications for vehicle maintenance.

Periodical Maintenance Schedule

Schedule outlining routine inspection, cleaning, and replacement tasks.

Lubrication System

Procedures for checking and changing engine oil, and cleaning the oil strainer.

Fuel System

Maintenance for fuel pipes, fuel filter, and gear oil checks and replacement.

Air Cleaner

Procedure for removing, cleaning, or replacing the air cleaner element.

Throttle Valve Operation

Checking throttle valve operation, cable, and handlebar free play.

Valve Clearance Inspection and Adjustment

Procedure for checking and adjusting valve clearances when the engine is cold.

Carburetor Idle Speed Adjustment

Steps for adjusting idle speed and emission values for the carburetor.

Ignition System and Spark Plug

Checking ignition timing and replacing the spark plug.

Cylinder Compression Pressure

Procedure for measuring cylinder compression pressure and identifying causes for low/high pressure.

Driving System

Maintenance for the drive belt and clutch pad.

Steering System

Checking steering handle operation and adjusting handle top bearing.

Suspension System

Checking front and rear shock absorbers for operation, damage, and leaks.

Front Disc Brake System

Maintenance for brake hoses, fluid level, filling, and air bleeding procedures.

Drum Brake System

Adjusting free play for front and rear drum brake levers.

Wheel/Tire

Checking tire pressure, surface condition, tread depth, and wear limit marks.

Nuts, Bolts Tightness

Ensuring all nuts and bolts on the frame are securely tightened during maintenance.

Lubrication System

Mechanism Diagram

Illustration showing the engine's lubrication system components.

Operational Precautions

Specifications for engine oil and gear oil quantity, viscosity, and torque values.

Trouble Diagnosis

Lists common issues related to low engine oil level, pressure, and dirty oil.

Engine Oil

Procedure for checking engine oil level and replacement of engine oil.

Cleaning Engine Oil Strainer

Steps for removing, cleaning, and reinstalling the engine oil strainer.

Oil Pump

Details on oil pump removal, disassembly, inspection, and re-assembly.

Gear Oil

Procedure for inspecting and replacing gear oil, including quantity and recommendations.

Fuel System

Mechanism Illustration

Diagram showing major components of the fuel system, including carburetor and fuel tank.

Precautions in Operation

Safety warnings and specifications for working with gasoline and fuel system parts.

Trouble Diagnosis

Diagnostic guide for common fuel system problems like poor starting and rough idle.

Carburetor Removal

Procedure for removing the carburetor from the engine.

Vacuum Chamber

Instructions for removing and disassembling the vacuum chamber of the carburetor.

Air Cut-off Valve

Procedure for removing and installing the air cut-off valve.

Auto By-Starter

Inspection and installation procedures for the auto by-starter component.

Float Chamber

Disassembly and checking of the float chamber, jets, and needle valve.

Idle Speed Adjustment

Procedure for adjusting engine idle speed and checking CO emissions.

Fuel Tank

Instructions for removing and installing the fuel unit and the fuel tank.

Air Cleaner

Procedure for removing, cleaning, or replacing the air cleaner element.

Engine Removal

Mechanism Diagram

Illustration of engine mounting and suspension components with torque values.

Operational Precautions

General information and specifications for engine removal and servicing.

Engine Removal

Step-by-step instructions for removing the engine from the motorcycle frame.

Removal of Engine Suspension Bushing

Procedure for pressing out and replacing engine suspension and shock absorber bushings.

Engine Suspension Frame

Instructions for removing and installing the engine suspension frame components.

Installation of Engine

Steps for reinstalling the engine onto the motorcycle frame, including torque values.

Cylinder Head and Valve

Mechanism Diagram

Illustration of cylinder head and valve components with torque values.

Precautions in Operation

General information and specifications for cylinder head, valve, and camshaft service.

Trouble Shooting

Identifies common engine performance issues and their relation to the cylinder head/valve.

Camshaft Removal

Procedure for removing the camshaft, including chain adjuster and timing marks.

Camshaft Inspection

Details on inspecting camshaft lobe height, bearing, and rocker arm components.

Cylinder Head Removal

Instructions for removing the cylinder head assembly from the engine.

Cylinder Head Disassembly

Procedure for disassembling the cylinder head, including valve springs and keepers.

Cylinder Head Inspection

Methods for checking cylinder head flatness, valve spring length, stem diameter, and guide.

Valve Seat Inspection and Service

Procedures for cleaning, grinding, and servicing valve seats.

Cylinder Head Reassembly

Instructions for reassembling the cylinder head, including valve installation.

Cylinder Head Installation

Procedure for installing the cylinder head onto the engine block.

Camshaft Installation

Steps for assembling and installing the camshaft and rocker arms.

Valve Clearance Adjustment

Procedure for measuring and adjusting valve clearance using a feeler gauge.

Cylinder and Piston

Mechanism Diagram

Illustration of cylinder, piston, and related components with torque values.

Precautions in Operation

General information and specifications for cylinder and piston service.

Trouble Diagnosis

Lists common issues causing low compression, knock, noise, and smoking exhaust.

Cylinder Removal

Procedure for removing the cylinder from the engine block.

Piston Removal

Instructions for removing piston rings and the piston from the cylinder.

Piston Ring Installation

Procedure for cleaning and installing piston rings, measuring groove and gap clearance.

Piston Installation

Instructions for installing the piston and piston pin into the cylinder.

Cylinder Installation

Procedure for installing the cylinder, gasket, and cam chain.

V-Belt Driving System and Kick Starter Arm

Mechanism Diagram

Illustration of V-belt drive system, clutch, and kick starter components.

Maintenance Description

General information, specifications, and torque values for the V-belt system.

Trouble Diagnosis

Lists common issues related to engine starting, shuddering, and poor performance.

Left Crankcase Cover

Procedure for removing and installing the left crankcase cover.

Kick Starter Arm

Disassembly, inspection, and reassembly of the kick starter arm.

Driving Belt

Instructions for removing, inspecting, and installing the V-belt.

Sliding Pulley

Procedure for removing, inspecting, and installing the sliding pulley and its components.

Clutch/Driven Pulley

Disassembly, inspection, and replacement of clutch lining, springs, and pulleys.

Final Driving Mechanism

Mechanism Diagram

Illustration of final drive gears, shafts, and bearings with torque values.

Operational Precautions

Specifications for gear oil and torque values for final drive components.

Trouble Diagnosis

Lists common issues related to engine starting, noise, and gear oil leaks.

Disassembly of Final Driving Mechanism

Procedure for disassembling the final drive gears, shafts, and cover.

Inspection of Final Driving Mechanism

Checking gears and shafts for wear, damage, or burning.

Bearing Replacement

Instructions for removing and installing bearings in the gear box and shaft.

Re-assembly of Final Driving Mechanism

Procedure for reassembling the final drive components, including gear oil addition.

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