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Daewoo G420E - User Manual

Daewoo G420E
88 pages
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Service Manual
G420E/G424E Tier LP Engine
Lift Trucks
G15S-2, G18S-2, G20SC-2
GC15S-2, GC18S-2, GC20SC-2
With G420E Tier LP Engine
G20E-3, G25E-3, G30E-3, G32E-3
GC20E-3, GC25E-3, GC30E-3, GC32E-3
with G424E Tier LP Engine
SB4136E00
Jun. 2004

Table of Contents

Questions and Answers

  • M
    marilynhuntOct 28, 2025
    Why is my Daewoo G420E cranking but not starting?
    • T
      teresa16Oct 28, 2025
      Your Daewoo Engine might be cranking but not starting due to several reasons: * The fuel container might be empty, in this case, fill the fuel container, but do not exceed 80% of liquid capacity. * The liquid valve or the excess flow valve could be closed, open the liquid valve slowly or reset the excess flow valve by closing the liquid valve, waiting for a 'click' sound, and then slowly opening it. * There might be a plugged fuel line. Remove the obstruction from the fuel line. First, close the liquid fuel valve, then carefully disconnect the fuel line (some propane may escape). Clear the obstruction with compressed air, reconnect the fuel line, slowly open the liquid fuel valve, and perform a leak test. * A fuse for SECM might be broken and needs replacement. * It's possible t...

Summary

Chapter 2 MI-04 LPG System Operational Overview

MI-04 SECM Overview

Covers general description, fuel management, load/speed management of the SECM.

Chapter 3 MI-04 Maintenance Schedule

Recommended Maintenance Schedule

Presents a summary of suggested maintenance requirements for the MI-04 fuel system.

Chapter 4 MI-04 LP Basic Troubleshooting

Basic Troubleshooting Guide

A table listing common problems, causes, and corrective actions for the MI-04 LP system.

Chapter 5 MI-04 LP Advanced Diagnostics

Advanced Diagnostics Overview

Introduces diagnostics, fault codes, and how to read them using the MIL.

Fault Code Management

Procedures for displaying and clearing diagnostic fault codes from SECM memory.

Chapter 6 MI-04 Electrical Connections

Electrical Testing Procedures

Details resistance and voltage checks for sensors and components in the MI-04 system.

Chapter 7 N2001 Pressure Regulator;Converter

N2001 Regulator Service

Covers removal, installation, hose connections, and disassembly steps.

Chapter 8 N-CA55-500 TR Air;Fuel Mixer

Mixer Service Procedures

Covers mixer removal, installation, and disassembly.

Chapter 9 Test and Adjustments

N2001 Regulator Testing

Covers hardware and procedures for testing N2001 regulator secondary and primary stages.

AVV Testing

Details hardware and procedures for testing the AVV function of the N-CA55-500TR mixer.

Ignition Timing Adjustment

Describes the procedure for mechanically aligning the distributor for proper ignition timing.

Idle Mixture Adjustment

Explains how to adjust the idle mixture using service tool software and the idle mixture screw.

Daewoo G420E Specifications

General IconGeneral
Engine type4-stroke, OHV, single-cylinder
Displacement420 cc
Number of cylinders1
Bore x Stroke90 x 66 mm
Cooling SystemAir-cooled
Fuel SystemCarburetor
Lubrication SystemSplash
Starting SystemRecoil start

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