EasyManua.ls Logo

Sym JET 4 R 50 Series User Manual

Sym JET 4 R 50 Series
164 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Sym JET 4 R 50 Series and is the answer not in the manual?

Sym JET 4 R 50 Series Specifications

General IconGeneral
Fuel SystemCarburetor
Brakes (Rear)Drum
Front SuspensionTelescopic Fork
Engine Type4-Stroke
TransmissionAutomatic

Summary

How to Use This Manual

Mechanism Illustrations

General Information and Trouble Diagnosis

Symbols and Marks

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

General Safety

Provides essential safety precautions for operating and maintaining the scooter.

Service Precautions

Details important precautions for servicing the motorcycle to prevent damage.

Specifications

Lists technical specifications for the scooter model.

Torque Values (Engine)

Provides specific torque values for engine components.

Torque Values (Frame)

Provides specific torque values for frame components.

Troubles Diagnosis

Guides for diagnosing and resolving common engine and operational issues.

Lubrication Points

Illustrates the locations requiring lubrication on the scooter.

Crankcase and Crankshaft

Maintenance Information

Overview of crankcase and crankshaft disassembly and repair procedures.

Troubleshooting

Diagnosing and resolving issues related to the crankcase and crankshaft.

Crankcase Disassembly

Step-by-step instructions for disassembling the crankcase.

Crankshaft Removal

Procedure for safely removing the crankshaft.

Crankshaft Inspection

Methods for inspecting the crankshaft for wear and damage.

Crankcase Installation

Instructions for reassembling and installing the crankcase.

Body Cover

Maintenance Information

Sequence and precautions for disassembling body covers.

Handle Cover

Procedure for removing and installing the handle cover.

Front Cover

Steps for removing and installing the front cover.

Front Inner Box

Instructions for removing and installing the front inner box.

Body Cover/Rear Center Cover/Rear Fender

Procedure for removing body covers, rear center, and rear fender.

Front Center Cover

Steps for removing and installing the front center cover.

Luggage Box

Procedure for removing and installing the luggage box.

Floor Panel

Instructions for removing and installing the floor panel.

Side Cover

Procedure for removing and installing the side covers.

Under Cover

Steps for removing and installing the under cover.

Brake System

Disc Brake System

Overview and diagram of the front disc brake system.

Rear Drum Brake System

Diagram and components of the rear drum brake system.

Maintenance Information

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

Troubleshooting

Diagnosing common issues with disc and drum brake systems.

Hydraulic Disc Brake

Procedure for checking and replacing brake fluid.

Disc Brake - Air Bleed

Steps for bleeding air from the hydraulic disc brake system.

Disc Brake - Caliper

Procedure for removing and installing the disc brake caliper.

Brake Pad Replacement

Instructions for replacing brake pads on the front disc brake.

Brake Disc

Inspection and checking procedures for the brake disc.

Disc Brake - Master Cylinder

Procedure for removing, inspecting, and assembling the master cylinder.

Rear Drum Brake

Maintenance and removal procedures for the rear drum brake.

Steering, Front Wheel, and Front Cushion

Maintenance Information

Overview of maintenance, specifications, and troubleshooting for steering components.

Steering Handle

Procedure for removing and installing the steering handle.

Front Wheel

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

Front Cushion

Procedure for removing and installing the front suspension forks.

Steering Stem

Instructions for removing and installing the steering stem assembly.

Rear Wheel and Rear Cushion

Maintenance Information

Details on rear wheel and cushion maintenance, specs, and troubleshooting.

Rear Wheel

Procedure for removing and inspecting the rear wheel.

Rear Cushion

Instructions for removing and installing the rear shock absorber.

Electrical Equipment

Precautions in Operation

General safety and operational precautions for electrical systems.

Specification

Technical specifications for charging and ignition systems.

Trouble Diagnosis

Diagnosing issues with charging, ignition, and starting systems.

Charging System

Wiring diagram and inspection for the charging system.

Battery

Procedure for removing and installing the battery.

Voltage Check

Method for measuring battery voltage.

Charging

Procedure and precautions for charging the battery.

Voltage Regulator Inspection

Steps for inspecting and testing the voltage regulator.

Alternator Charging Coil

Procedure for checking the alternator charging coil resistance.

Alternator Lighting Coil

Procedure for checking the alternator lighting coil resistance.

Resistor Check

Method for checking the resistance of the resistor unit.

Ignition System

Overview of the ignition system circuit and components.

CDI Unit

Procedure for removing and checking the CDI unit.

Ignition Coil

Instructions for removing and checking the ignition coil.

Spark Plug Confirmation

Procedure for testing spark plug output.

Primary Coil Check

Method for checking the resistance of the ignition coil's primary.

Secondary Coil

Procedure for checking ignition coil secondary resistance.

Replacement

Instructions for replacing the ignition coil.

Pulse Generator

Procedure for checking the pulse generator.

Starting System

Overview of the starting system circuit and components.

Starter Motor Pinion

Procedure for removing, inspecting, and installing the starter motor pinion.

Starter Motor Removal/Disassembly

Steps for removing and disassembling the starter motor.

Armature Inspection

Procedure for inspecting the starter motor armature.

Starter Motor Re-Assembly/Installation

Instructions for reassembling and installing the starter motor.

Oil Level Switch

Troubleshooting and removal/installation of the oil level switch.

Carburetor Heater

Procedure for removing, installing, and inspecting the carburetor heater.

Fuel Unit

Procedure for removing, installing, and inspecting the fuel unit.

Lights

Overview of the scooter's lighting system components.

Starting Motor Removal

Procedure for removing the starter motor.

Meter

Procedure for removing and installing the instrument meter assembly.

Light/Bulbs

Procedure for replacing headlight bulbs and adjusting beam.

Front Turn Signal Lamp Bulb Replacement

Instructions for replacing front turn signal lamp bulbs.

Bulbs Replacement of Tail Light/Brake Light/Rear Turn Signal Light

Procedure for replacing bulbs in tail, brake, and rear turn lights.

Main Switch/Horn

Procedure for checking and replacing the main switch.

Main Switch

Checking and replacing the main switch and its connector.

Handle Switch

Continuity checks for various handle switches.

Turn Signal Light Switch

Continuity check for the turn signal light switch.

Brake Light Switch

Procedure for checking and replacing the brake light switch.

Horn

Procedure for testing and replacing the horn.

Fuel Unit

Procedure for removing, installing, and inspecting the fuel unit.

Service Maintenance Information

General Information

Basic specifications and information for the Jet 4 R 50 series scooter.

Periodical Maintenance Schedule

Schedule outlining recommended maintenance intervals and tasks.

Air Cleaner

Procedure for cleaning or replacing the air cleaner element.

Fuel Lines

Instructions for checking and replacing fuel lines.

Fuel Filter

Procedure for replacing the fuel filter.

Engine Oil Line

Procedure for checking and maintaining the engine oil lines.

Oil Pump Control Cable

Procedure for adjusting the oil pump control cable.

Battery

Procedure for removing, installing, and maintaining the battery.

Tire

Information on tire pressure, inspection, and replacement.

Rear Drum Brake Free Play

Procedure for measuring and adjusting rear brake lever free play.

Disc Brake System Hose: (Front Disc Brake Type)

Inspection of disc brake hoses and system for leaks.

Brake Fluid

Procedure for checking and refilling brake fluid.

Brake Lining Wear: (Rear Drum Brake Type)

Procedure for checking brake lining wear on drum brakes.

Brake Pad Wear: (Disc Brake Type)

Procedure for checking brake pad wear on disc brakes.

Steering System

Maintenance and checks for the steering system.

Suspension

Inspection and maintenance of front and rear suspension components.

Nuts, Bolts Tightness

Ensuring all nuts and bolts are tightened to specifications.

Transmission Oil

Procedure for checking and replacing transmission oil.

Spark Plug

Procedure for inspecting, checking gap, and replacing spark plugs.

Control Cable Lubrication

Procedure for lubricating control and brake cables.

Driver Belt

Procedure for checking and replacing the drive belt.

Ignition Timing

Procedure for checking ignition timing.

Throttle Valve Operation

Checking throttle valve operation and cable free play.

Carburetor Idle Speed Adjustment

Procedure for adjusting the carburetor idle speed.

Cylinder Compression Pressure Test

Procedure for testing cylinder compression pressure.

Headlight Adjustment

Procedure for adjusting the headlight beam.

Nuts, Bolts Tightness

Ensuring proper tightness of nuts and bolts on the frame.

Lubrication System

Precautions in Operation

Safety precautions when working with the lubrication system.

Lubricant

Recommended lubricant specifications and oil tank capacity.

Trouble Shooting

Diagnosing and resolving common lubrication system problems.

Oil Pump Removal

Procedure for removing the oil pump.

Oil Pump Installation

Instructions for installing the oil pump.

Oil Pump/Oil Tube Air Bleeding

Procedure for air bleeding the oil pump and oil tube system.

Oil Tube/Oil Pump

Steps for filling the oil tube and pump with oil.

Oil Tube Air Bleeding

Procedure for bleeding air from the oil output tube.

Oil Tank

Procedure for removing and installing the oil tank.

Fuel System

Maintenance Information

Overview of fuel system maintenance, precautions, and specifications.

Precautions in Operations

Safety precautions when working with gasoline and fuel system components.

Specification

Technical specifications for the fuel system components.

Troubleshooting

Diagnosing common fuel system issues like starting and stalling.

Throttle Valve

Procedure for removing, inspecting, and installing the throttle valve.

Carburetor Remove

Steps for removing the carburetor assembly.

Auto By-Starter

Procedure for inspecting, removing, and installing the auto by-starter.

Float/Float Valve/Jet

Procedure for removing, inspecting, and cleaning float, valve, and jets.

Float Level Inspection

Method for measuring and adjusting the float fuel level.

Carburetor Installation

Procedure for installing the carburetor assembly.

Reed Valve

Procedure for inspecting and installing the reed valve.

Air Cleaner

Procedure for removing and installing the air cleaner.

Engine Removal

Maintenance Information

Information on parts requiring engine removal and related torque values.

Engine removal

Step-by-step procedure for removing the engine.

Drum type rear brake

Procedure related to the drum type rear brake during engine removal.

Engine Hanger Bracket

Procedure for removing, disassembling, and installing the engine hanger bracket.

Engine installation

Instructions for installing the engine and related torque values.

Cylinder Head, Cylinder, and Piston

Maintenance Information

Overview of maintenance, specifications, and troubleshooting for cylinder components.

Cylinder Head

Procedure for removing, cleaning, inspecting, and installing the cylinder head.

Cylinder/Piston

Procedure for removing, inspecting, and installing the cylinder and piston.

A.C. Generator

Maintenance Information

Information on AC generator service, torque values, and coil resistance.

Generator Removal

Steps for removing the AC generator assembly.

Generator Installation

Instructions for installing the AC generator assembly.

"V" Type Belt Drive System and Kick-Starter

Maintenance Information

Overview of drive system maintenance, precautions, and specifications.

Specification

Standard values for drive belt and pulley components.

Torque Values

Specific torque values for drive system assembly.

Trouble Shooting

Diagnosing common issues with the V-belt drive and kick-starter systems.

Left Crankcase Cover

Procedure for removing the left crankcase cover.

Disassembly of Kick Starter

Steps for disassembling the kick starter mechanism.

Inspection of kick Starter

Procedure for inspecting the kick starter components.

Reassembly of Kick Starter

Instructions for reassembling the kick starter mechanism.

Installation of the Left Crankcase Cover

Procedure for installing the left crankcase cover.

Drive Belt

Procedure for removing, inspecting, and installing the drive belt.

Movable Drive Face

Procedure for removing, inspecting, and installing the movable drive face.

Clutch/Driven Pulley

Procedure for disassembling, inspecting, and servicing the clutch/driven pulley.

Final Driving Mechanism

Maintenance Information

Information on gear oil, torque values, and troubleshooting for the final drive.

Torque Values

Specific torque values for final driving mechanism components.

Troubleshooting

Diagnosing common issues with the final driving mechanism.

Disassembly of Final Driving Mechanism

Step-by-step procedure for disassembling the final drive.

Inspection of Final Driving Mechanism

Procedures for inspecting final drive components for wear and damage.

Bearing Replacement

Instructions for replacing bearings in the final drive assembly.

Re-Assembly of Final Driving Mechanism

Instructions for reassembling the final driving mechanism.

Related product manuals