Generac Power Systems 941-2 - Page 116

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Section 7.2

ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING

Page 7.2-6

PROBLEM 6 - GENERATOR DOESN’T PULL FULL LOAD

PROBLEM 7 - GENERATOR CIRCUIT BREAKER TRIPS / NO AC VOLTAGE

Main Page

Replacement Parts2
Table of Contents3
Generator Fundamentals7
Electromagnetic Induction7
Electromagnetic Fields7
Alternating Current8
Electrical Units8
Generator Fundamentals9
Ohm's Law9
Major Generator Components13
Upper Cooling Fan13
Operational Analysis17
Operational Description17
Insulation Resistance Testers19
Preparation for Tests19
Cleaning the Generator20
Drying the Generator21
Components Testing23
Stator Assembly23
Control Panel27
Sheet Metal29
Part 2 Engine Mechanical35
General Information37
Gaseous Fuel System38
Recommended Fuels38
Recommended Engine Oil38
Storage Instructions39
Engine Tune-Up39
Valve Train Components41
Valve Service42
Adjusting Valve Clearance44
Rocker Arm Cover Installation45
Piston Rings48
Assembly and Installation49
Connecting Rod49
Cylinder Service50
Crankshaft Removal51
Crankcase Cover Removal51
Camshaft Removal51
Camshaft Inspection52
Crankshaft Inspection52
Installing the Crankshaft53
Installing the Camshaft53
Gasoline Fuel System55
- Recommended Fuel57
- Air Cleaner59
- Air Intake59
- Fuel Filter61
- Fuel Pump61
- Carburetor Operation63
- Carburetor Disassembly64
- Cleaning and Inspection64
- Engine Speed65
- Throttle Linkage Adjustment65
- Carburetor Removal65
- Automatic Choke67
- Operation67
- Speed Control System69
Gaseous Fuel System71
- Important Considerations73
- Fuel Supply Lines74
- Excess Flow Valve74
- Gaseous Carburetion75
- Leakage Testing75
- Carburetor Adjustment79
Engine Oil & Cooling System81
- Engine Oil System83
- Oil Pump83
- Breather Assembly84
- Pressure Relief Valve84
- Crankshaft Oil Seals84
- Engine Cooling System87
- Compensating for Restrictions88
- Inverter Location88
- Testing the Installation88
Engine Electrical System89
- Engine DC Control System91
- How It Works92
- Circuit Board Connections93
- Starter Motor97
- Oil Pressure Switch103
Troubleshooting107
- Troubleshooting Reference Chart109
- Stator Tests128
- Engine Speeds and Voltage Specifications133
Specifications & Charts133
- Crankshaft End Play136
- Crankcase Assembly137
- Camshaft Assembly140
- Torque Specifications141
- Major Features and Dimensions143

Generac Power Systems 941-2 - Page 116

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