CONTENTS
1. GENERAL ....................................................................................................................... 1
1.1 Exterior Views ..........................................................................................................................1
1.2 Specifications ...........................................................................................................................2
1.3 Engine Outline ..........................................................................................................................4
1.4 Piping Diagrams .......................................................................................................................7
1.5 Exhaust Gas Emission Regulation ...........................................................................................9
1.5.1 Engine identification (3JH4E)............................................................................................................ 9
1.5.2 Exhaust Gas Regulations ............................................................................................................... 10
1.5.3 Guarantee Conditions for Emission Standard................................................................................. 10
2. Inspection and Adjustment ............................................................................................ 12
2.1 Periodic Maintenance Schedule .............................................................................................12
2.2 Periodic Inspection and Maintenance Procedure ...................................................................14
2.2.1 Check before starting...................................................................................................................... 14
2.2.2 inspection after initial 50 hours or one month operation ................................................................. 17
2.2.3 Inspection every 50 hours or monthly ............................................................................................. 22
2.2.4 Inspection every 250 hours or one year.......................................................................................... 26
2.2.5 Inspection every 1,000 hours or four years..................................................................................... 31
2.3 Adjusting the no-load maximum or minimum speed ..............................................................38
2.4 Sensor Inspection ..................................................................................................................38
2.4.1 Oil pressure switch ................................................................... 38
2.4.2 Thermo switch....................................................................... 38
2.5 Thermostat inspection ............................................................................................................39
2.6 Adjusting Operation ................................................................................................................40
2.6.1 Preliminary Precautions .................................................................................................................. 40
2.6.2 Adjusting operation procedure ........................................................................................................ 40
2.6.3 Check Points and Precautions During Running.............................................................................. 41
2.7 Long storage ..........................................................................................................................42
3. Troubleshooting .............................................................................................................43
3.1 Preparation before troubleshooting ........................................................................................43
3.2 Quick Reference Chart for Troubleshooting ...........................................................................44
3.3 Troubleshooting (Concerning engine and fuel injection equipment) ......................................53
3.4 Troubleshooting by measuring Compression Pressure .........................................................56
4. Disassembly and Reassembly ...................................................................................... 58
4.1 Disassembly and Reassembly Precautions ...........................................................................58
4.2 Disassembly and Reassembly Tools .....................................................................................59
4.2.1 General Handtools .......................................................................................................................... 59
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