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Ezgo EXPRESS L4 User Manual

Ezgo EXPRESS L4
208 pages
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625610
625617
ISSUED MAY 2012 REVISED AUGUST 2012
GASOLINE POWERED UTILITY VEHICLE
TECHNICIAN’S REPAIR AND SERVICE MANUAL

Table of Contents

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Ezgo EXPRESS L4 Specifications

General IconGeneral
BrandEzgo
ModelEXPRESS L4
CategoryUtility Vehicle
LanguageEnglish

Summary

SAFETY

GENERAL

General operating principles and vehicle usage guidelines.

GENERAL OPERATION

Rules and recommendations for safe vehicle operation.

MAINTENANCE

Key principles and practices for vehicle maintenance.

VENTILATION

Safety precautions related to ventilation during operation or storage.

NOTICES, CAUTIONS WARNINGS AND DANGERS

Explanation of safety symbols used throughout the manual.

IMPORTANT SAFETY WARNING

Crucial safety warnings regarding potential hazards during operation or repair.

MODIFICATIONS TO VEHICLE

Warnings against modifying the vehicle's specifications.

GENERAL MAINTENANCE

General precautions for performing maintenance safely.

BEFORE SERVICING THE VEHICLE

Essential safety steps to follow before starting any vehicle service.

Battery Removal and Installation

Step-by-step instructions for removing and installing the vehicle battery.

LIFTING THE VEHICLE

Safety guidelines and procedures for safely lifting the vehicle.

GENERAL INFORMATION & ROUTINE MAINTENANCE

SERIAL NUMBER LOCATION

Identifies the locations of serial and date code labels on the vehicle.

STARTING THE VEHICLE WITH A DISCHARGED BATTERY

Instructions on how to start the vehicle with a depleted battery.

SERVICING THE VEHICLE

Guidelines and warnings for servicing the vehicle safely and effectively.

ROUTINE MAINTENANCE

Importance of regular maintenance for vehicle service life.

POWERTRAIN MAINTENANCE

Procedures related to powertrain maintenance.

BRAKES

Recommendations for brake system checks and performance tests.

TIRES

Guidelines for inspecting tire condition and inflation pressure.

TRAILERING

Safety measures for securing the vehicle when trailering.

TOP AND WINDSHIELD

Instructions for cleaning the top and windshield.

WINTER OR PROLONGED STORAGE

Steps for preparing the vehicle for long-term storage.

CARE AND CLEANING OF THE VEHICLE

Procedures for cleaning the vehicle's body and components.

VEHICLE CARE PRODUCTS

List of recommended care products for the vehicle.

HARDWARE

Information on vehicle hardware grades and identification.

TORQUE SPECIFICATIONS

Chart of torque specifications for various fasteners.

PERIODIC SERVICE SCHEDULE

Schedule outlining routine maintenance tasks and intervals.

FUEL

TOWING

Safety precautions and procedures for towing the vehicle.

BODY

General

General information and safety precautions for body work.

Body Component Replacement

Procedures for replacing various body components on the vehicle.

PAINTING

Instructions for painting vehicle body panels, including scratch repair.

WHEELS AND TIRES

WHEEL AND TIRE SERVICE

General procedures and safety for wheel and tire maintenance and replacement.

FRONT SUSPENSION AND STEERING

FRONT SUSPENSION

Procedures for servicing front suspension components like shock absorbers and axles.

Front Axle Replacement

Steps for removing and installing the front axle assembly.

Shock Boot Removal and Replacement

Procedure for replacing the shock absorber boot.

Front Spring Replacement

Steps for replacing the front leaf springs.

Tie Rod, Wheel Bearing and King Pin Inspection

Procedures for inspecting tie rods, wheel bearings, and king pins for wear.

Tie Rod Replacement

Steps for removing and installing tie rods.

STEERING

Procedures for servicing the vehicle's steering system.

Steering Wheel Replacement

Procedure for replacing the steering wheel assembly.

Steering Shaft Replacement

Steps for removing and replacing the steering shaft.

Steering Housing Assembly Replacement

Procedure for replacing the steering housing assembly.

Idler Arm Replacement

Steps for removing and installing the idler arm.

Rack Tensioner Replacement

Procedure for replacing the rack tensioner.

Rack Replacement

Steps for removing and replacing the steering rack.

Rack Ball Joint Removal

Procedure for removing the rack ball joint.

Rack Ball Joint Installation

Procedure for installing the rack ball joint.

Steering Pinion and Bearing Replacement

Steps for replacing the steering pinion and bearing.

Maintenance

Routine maintenance procedures for steering and suspension systems.

Seal Installation

Procedure for installing the hub seal correctly.

Bearing Adjustment

Steps for adjusting wheel bearings for proper tension and play.

King Pin Bushing Replacement

Procedure for replacing worn king pin bushings.

Wheel Alignment

Procedure for checking and adjusting front-end wheel alignment.

Tire Wear Diagnosis

How to diagnose suspension issues by examining tire wear patterns.

FRONT SUSPENSION AND AXLE MOUNTED STEERING

MAINTENANCE

Routine maintenance for front suspension and steering systems.

Lubrication

Lubrication points and procedures for steering and suspension components.

Wheel Bearing and King Pin Bushing inspection

Inspection of wheel bearings and king pin bushings for wear.

Wheel Bearing Packing

Procedure for packing wheel bearings with grease.

Wheel Bearing Adjustment

Steps for adjusting wheel bearings to proper tension and play.

Wheel Alignment

Procedure for checking and adjusting front-end wheel alignment.

FRONT SUSPENSION

Procedures for servicing front suspension components.

Front Shock Absorber Replacement

Steps for removing and installing front shock absorbers.

Front Axle Replacement

Steps for removing and installing the front axle assembly.

Axle Linkage Rod Replacement

Procedure for replacing axle linkage rods.

Front Spring Replacement

Steps for replacing front leaf springs.

Hub Replacement

Steps for removing and installing wheel hubs.

Wheel Bearing and Race Replacement

Procedure for replacing wheel bearings and races.

Rack Ball Joint Replacement

Steps for replacing the steering rack ball joint.

Tie Rod Inspection/Replacement

Procedure for inspecting and replacing tie rods.

Bellows Replacement

Steps for replacing steering rack bellows.

Pinion Seal Replacement

Procedure for replacing the steering pinion seal.

Spindle Replacement

Steps for removing and installing the steering spindle.

Rack and Pinion Unit Disassembly and Inspection

Procedure for disassembling and inspecting the rack and pinion unit.

Rack and Pinion Unit Replacement

Steps for removing and installing the rack and pinion unit.

Checking/Adjusting Rack Extension-to-Rack and Pinion Unit Clearance

Procedure for checking and adjusting steering unit clearance.

Steering Wheel Replacement

Procedure for replacing the steering wheel assembly.

Steering Shaft and Column Replacement

Steps for replacing the steering shaft and column.

SPEED CONTROL

System Operation

Explanation of the speed control system's operational mechanisms.

Troubleshooting

Common problems and solutions for the speed control system.

Accelerator Cable Removal at Pedal Box

Steps to remove the accelerator cable from the pedal box.

Accelerator Cable Installation

Steps to install the accelerator cable.

Accelerator Cable Adjustment

Procedure for adjusting the accelerator cable.

Throttle Rod Removal

Steps to remove the throttle rod.

Throttle Rod Adjustment

Procedure for adjusting the throttle rod.

Pedal Box Adjustments

Adjustments for the accelerator pedal box components.

Micro Switch Adjustment

Procedure for adjusting the micro switch in the pedal box.

Road Test

Procedure for testing vehicle speed control after adjustments.

ENGINE

Powertrain Maintenance

Maintenance procedures for the engine's powertrain.

Checking the Oil Level

Procedure for checking the engine oil level.

Changing the Oil

Steps for changing the engine oil and filter.

AIR FILTER INSPECTION/REPLACEMENT

Procedures for inspecting and replacing the air filter assembly.

Cleaning the Air Filter Element

Instructions for cleaning the air filter element.

Starter/Generator Belt Tension

Procedures for checking and adjusting starter/generator belt tension.

Adjusting the Belt

Steps for adjusting the starter/generator belt.

STARTER/GENERATOR REPLACEMENT

Steps for removing and installing the starter/generator.

COOLING SYSTEM CLEANING

Procedures for cleaning the engine's cooling system.

SPARK PLUG

Information on spark plug type, gap, and replacement.

Four Cycle Engine

Specifications and description of the engine.

Cylinder Head

Procedures for cylinder head maintenance and adjustment.

Compression Measurement

How to measure engine compression.

Rocker Cover Removal

Steps for removing the rocker cover.

Valve Clearance Inspection

Procedure for inspecting valve clearance.

Valve Clearance Adjustment

Steps for adjusting valve clearance.

Engine Removal

Procedures for removing the engine from the vehicle.

Controls and Wiring

Disconnecting engine controls and wiring harness.

Removing the Engine from the Vehicle

Step-by-step guide for engine removal.

Engine Installation

Steps for installing the engine into the vehicle.

DRIVE CLUTCH REMOVAL

Procedure for removing the drive clutch.

FUEL SYSTEM

GENERAL

General information about the fuel system components and their function.

Carburetor Operation

Explanation of carburetor systems and operational principles.

Choke Operation

How to operate the choke mechanism.

Fuel System Component Service and Replacement

Procedures for servicing and replacing fuel system components.

Carburetor Removal

Steps for removing the carburetor from the engine.

Carburetor Disassembly

Procedures for disassembling the carburetor.

Float Level Alignment

How to inspect and align the carburetor float level.

Carburetor Installation

Steps for installing the carburetor.

FUEL PUMP

Information about the fuel pump's mounting and operation.

Fuel Pump Replacement

Steps for replacing the fuel pump.

FUEL LINES AND FILTER

Information on fuel lines and the in-line fuel filter.

FUEL TANK REMOVAL

Steps for removing the fuel tank.

CARBON CANISTER

Information and procedure for servicing the carbon canister.

CONTINUOUSLY VARIABLE TRANSMISSION (CVT)

GENERAL

General overview of the CVT system.

Clutches

Explanation of the drive and driven clutch mechanisms and their interaction.

Drive Clutch

How the drive clutch operates under various conditions.

Driven Clutch

How the driven clutch operates and interacts with the drive clutch.

Increased Load

How the CVT responds to increased load conditions.

Equilibrium

The concept of equilibrium in CVT operation.

Removing the Drive Belt

Steps for removing the CVT drive belt.

Drive Belt Service

Maintenance and service guidelines for the drive belt.

Drive Clutch Removal

Steps for removing the drive clutch assembly.

Drive Clutch Installation

Steps for installing the drive clutch assembly.

Driven Clutch Removal

Steps for removing the driven clutch assembly.

Driven Clutch Repair

Procedures for repairing the driven clutch.

Driven Clutch Assembly

Steps for assembling the driven clutch.

Driven Clutch Installation

Steps for installing the driven clutch assembly.

STORAGE

Guidelines for storing the vehicle's clutches.

DIRECTION SELECTOR

Direction Selector

General information and procedures for the direction selector.

ELECTRICAL

CIRCUITS AND CONTROLS

Overview of the vehicle's electrical circuits and control components.

STARTER

Explanation of the starter system operation and circuit.

GENERATOR

Explanation of the generator system operation and circuit.

WIRING

General guidelines and precautions for working with vehicle wiring.

TESTING IGNITION CIRCUIT

Procedures for testing the ignition circuit.

Testing the Magneto

Procedure for testing the magneto's resistance.

TESTING STARTING CIRCUIT

Procedures for testing the vehicle's starting circuit.

TESTING CHARGING CIRCUIT

Procedures for testing the vehicle's charging circuit.

INSPECTION

Inspection points for the starter/generator assembly.

Starter/Generator

Procedures for starter/generator removal, disassembly, and repair.

BATTERY VOLTAGE TEST

Procedure for testing battery voltage.

STORAGE OF BATTERY

Guidelines for storing the vehicle battery.

DVOM (DIGITAL VOLT OHM METER)

Information on using the DVOM for electrical testing.

TROUBLESHOOTING

General troubleshooting guidance for electrical circuits.

POWER SUPPLY

Procedures for checking the power supply to electrical components.

Check battery condition

Steps to check the battery's condition and voltage.

Check power wire

Procedure to verify the condition of the power wire.

Check fuse

Procedure to check the condition of fuses.

ACCESSORY WIRING

Guidance for checking accessory wiring.

MECHANICAL BRAKES

BRAKE SYSTEM OVERVIEW

General description of the mechanical brake system components and operation.

How the Service Brake Works

Explanation of how the service brake system functions.

Equalizer Link

Function and importance of the equalizer link.

Automatic Adjuster Mechanism

How the automatic brake adjuster mechanism works.

How the Parking Brake Works

Explanation of the parking brake system operation.

Compensator Assembly

Details of the compensator assembly.

Kick-Off Actuating Linkage

Information on the kick-off actuating linkage.

TROUBLESHOOTING TABLE

Table detailing common brake problems, causes, and corrections.

TROUBLESHOOTING AND INSPECTION

General troubleshooting and inspection procedures for the brake system.

Brake Pedal and Linkage Inspection

Inspecting the brake pedal and linkage for proper function and wear.

Check brake pedal free travel

Procedure for checking and adjusting brake pedal free travel.

Inspect parking brake pedal hinge

Inspecting the parking brake pedal hinge for damage or wear.

Check the condition and operation of the parking brake latching mechanism

Verifying the parking brake latching mechanism's condition and operation.

Periodic Brake Performance Test (PBPT)

Procedure for evaluating brake system performance through regular tests.

Aggressive Stop Test

Test procedure to evaluate brake system response under aggressive braking.

Wheel Brake Inspection

Detailed inspection of the wheel brake assemblies.

MAINTENANCE AND REPAIRS

Procedures for brake system parts replacement and adjustments.

Adjusting Brake Pedal Free Travel

Detailed steps for adjusting brake pedal free travel.

Brake Drum Removal and Installation

Steps for removing and installing brake drums.

Wheel Brake Service

Comprehensive service procedures for wheel brakes.

Backing Plate/Entire Wheel Brake Assembly Removal and Installation

Steps for removing and installing wheel brake backing plates or entire assemblies.

Brake Shoe and Adjuster Replacement

Procedure for replacing brake shoes and adjuster components.

Brake Cable and Equalizer Assembly Removal and Installation

Steps for removing and installing brake cables and equalizer.

Compensator Assembly, Removal and Installation

Procedures for removing and installing the compensator assembly.

Brake Pedal Removal and Installation

Steps for removing and installing the brake pedal.

Parking Brake Catch Bracket Removal and Installation

Procedures for removing and installing the parking brake catch bracket.

Parking Brake Pedal, Removal and Installation

Steps for removing and installing the parking brake pedal.

Pedal Bumper Adjustment

Procedure for adjusting the pedal bumper.

Parking Brake Release Linkage Removal, Replacement and Installation

Procedures for removing, replacing, and installing parking brake release linkage.

Parking Brake Kick-Off Cam Removal, Replacement and Installation

Procedures for removing, replacing, and installing the parking brake kick-off cam.

REAR SUSPENSION

General

General information about the rear suspension system.

Shock Absorber Removal

Steps for removing the rear shock absorbers.

Shock Absorber Installation

Steps for installing the rear shock absorbers.

Rear Leaf Spring Removal

Steps for removing the rear leaf springs.

Rear Leaf Spring Installation

Steps for installing the rear leaf springs.

REAR AXLE

NEUTRAL LOCK

Explanation and operation of the neutral lock feature.

Rear Axle

General information and procedures for the rear axle.

REAR AXLE DISASSEMBLY

Procedures for disassembling the rear axle components.

Axle Shaft Seal Removal and Replacement

Steps for removing and replacing axle shaft seals.

Axle Shaft Replacement

Steps for replacing the axle shaft.

TROUBLESHOOTING

GASOLINE VEHICLE PERFORMANCE

Troubleshooting common gasoline vehicle performance issues.

ENGINE RUNS ROUGH OR LOSS OF POWER

Troubleshooting engine running rough or loss of power issues.

POOR LOW SPEED PERFORMANCE

Troubleshooting poor low-speed performance issues.

POOR MIDRANGE OR HIGH SPEED PERFORMANCE

Troubleshooting poor midrange or high-speed performance.

ENGINE OVERHEATING

Troubleshooting engine overheating issues.

REPEATED SPARK PLUG FOULING

Troubleshooting repeated spark plug fouling.

CARBURETOR FLOODS ENGINE

Troubleshooting carburetor flooding issues.

EXCESSIVE SMOKING

Troubleshooting excessive engine smoking.

BACKFIRING

Troubleshooting engine backfiring issues.

ERRATIC, SURGING, OR SUDDEN CHANGE IN GOVERNED SPEED

Troubleshooting erratic speed changes and surging.

FUEL ACCUMULATION IN THE CRANKCASE

Troubleshooting fuel accumulation issues in the crankcase.

Carburetor

Troubleshooting common carburetor problems and conditions.

STARTER / GENERATOR

Troubleshooting common starter/generator issues.

SUSPENSION AND STEERING

Troubleshooting common suspension and steering system issues.

BRAKE SYSTEM

Troubleshooting common brake system performance and operational issues.

GENERAL SPECIFICATIONS

PRODUCT SPECIFICATION

Detailed specifications for the vehicle model.

PRODUCT OVERVIEW

An overview of the vehicle's main features and capabilities.

EXPRESS S4

Dimensional and performance specifications for the Express S4 model.

EXPRESS L4

Dimensional and performance specifications for the Express L4 model.

TURNING CLEARANCE DIAMETER

Information on the vehicle's turning clearance diameter.

TERRAIN 250

Dimensional specifications for the Terrain 250 model.

TERRAIN 500

Dimensional specifications for the Terrain 500 model.

TERRAIN 1000

Dimensional specifications for the Terrain 1000 model.

TURNING CLEARANCE DIAMETER

Information on turning clearance diameters for Terrain models.

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