Models Covers:
YEG150DTHC YEG150DTHS
YEG200DTHC YEG200DTHS
YEG300DTHC YEG300DTHS
YEG400DTHC YEG400DTHS
YEG500DTHC YEG500DTHS

This is the most complete service repair manual for Yanmar YEG Series Diesel Powered generators.
This Manual has easy-to-read text sections with high quality diagrams and instructions.

Service Repair Manual Covers:
1. FEATURES OF YEG GENERATOR
2. MODEL IDENTIFICATION CODE
3. OUTLlNE BY TYPES
4. MODEL SPECIFICATION LlST
5. NOTICE FOR USAGE
6. SPECIFICATION AND PERFORMANCE
6-1. 3-phase,2-pole (YEG150DTHC - YEG500DTHC)
6-2. 3-phase,2-pole (YEG150DTHS - YEG500DTHS)
7. OVERVIEW OF STRUCTURE
7-1. Canopy Type
7-2. Bonnet Silent Type
7-3. Engines
8. CONTROL PANEL AND CONTROL BOX
8-1. YEG150DTHC/YEG200DTHC
8-2. YEG150DTHS/YEG200DTHS
YEG300DTHC/YEG400DTHC/YEG500DTHC
YEG300DTHS/YEG400DTHS/YEG500DTHS
8-3. Function of Control Panel Components
8-4. Description of Control Box Component Functions
9. EXPLODED VIEW OF GENERATOR
10. PROTECTION SYSTEM AND INDICATORS
10-1. Lubricant Pressure Switch Check
10-2. Coolant Temperature Switch Check
11. TROUBLESHOOTING OF CIRCUIT BY INDICATOR
11-1. Starter Switch Operation Circuit Diagram
11-2. Normal Indication at Various Starter Switch Positions
11-3. Power Supply to Main Protection Component
11-4. Troubleshooting When Both Charge Lamp and Low Oil
Pressure Lamp Are Not Lit (Starter Switch ON)
11-5. Troubleshooting When Charge Lamp Does Not Go Off or
Flashes With Dim Light (Charging Failure)
12. TROUBLESHOOTING FOR GENERATOR FAILURE
12-1. Driven Machine (Electrical Equipment)
Does Not Operate
12-2. Generated Voltage Failed
13. AVR TYPE VOLTAGE ADJUSTMENT PROCEDURE
13-1. Voltage regulator
13-2. AVR (Automatic Voltage Regulator)
13-3. Troubleshooting
14. DISASSEMBLY AND REASSEMBLY
14-1. Generator Cover Components
14-2. Disassembly
14-3. Reassembly
15. GENERATOR AND PANEL CIRCUIT DIAGRAMS
15-1. YEG150/200DTHC
15-2. YEG300/400/500DTHC
YEG 150/200/300/400/500DTHS
15-3. YEG150/200DTHC for Saudi Arabia
15-4. YEG300/400/500DTHC
YEG 150/200/300/400/500DTHS for Saudi Arabia
16. ENGINE CIRCUIT DIAGRAMS
16-1 . YEG 150DTH, YEG200DTH
16-2. YEG300DTH, YEG400DTH, YEG500DTH
17. MAINTENANCE AND INSPECTION
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