Manuals / Generac Power Systems / Lawn and Garden / Portable Generator

Generac Power Systems 5251 The Generator, 1 - 7kW, Single Cylinder GH-410 Engine, Air Filter

Models: 5253 5255 5251 5254 5252

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Section 1 — General Information

Air-cooled Generators

1.4THE GENERATOR

Figure 1.1 – 7kW, Single Cylinder GH-410 Engine

Figure 1.2 – 10kW, V-twin GT-530 Engine

		Control			Control
		Panel		Data	Panel
		Panel	Oil	Data
Oil	Data	Air Filter	Oil	Decal
Oil	Data	Air Filter	Dipstick	Decal
Dipstick	Decal	Cover	Dipstick
Dipstick	Decal	Cover
Exhaust		Exhaust
Exhaust		Enclosure			Air Filter
Enclosure		Enclosure			Air Filter
Enclosure
		Fuel			Fuel
		Inlet			Inlet
		(Back)			(Back)
		Fuel			Fuel
		Regulator			Fuel
		Regulator			Regulator
					Regulator

Composite Base

Oil Filter

Battery Compartment

Composite Base

Oil Filter

Battery Compartment

Figure 1.3 – 13kW and 16kW, V-twin GT-990 Engine

	Air Filter	Control
	Cover	Control
	Cover	Panel
Oil		Panel
Oil		Data
Dipstick		Decal

Exhaust

Enclosure

Fuel

Inlet (Back)

Fuel

Regulator

Composite Base

Oil Filter

Battery Compartment

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Generac Power Systems 5251 The Generator, 1 - 7kW, Single Cylinder GH-410 Engine, 3 - 13kW and 16kW, V-twin GT-990 Engine

Contents

C US LISTED Installation and Owner’s ManualDEADLY EXHAUST FUMES. OUTDOOR INSTALLATION ONLY Not intended for use as Primary Power in place of utility or inINTRODUCTION ‹ CONTENTS‹ OPERATION AND MAINTENANCE ‹ HOW TO OBTAIN SERVICESection 5 - Troubleshooting Section 2 - Post Installation Start-upand Adjustments Section 4 - Maintenanceknown to the state of California to cause IMPORTANT SAFETY INSTRUCTIONS GENERAL HAZARDS  This product contains or emits chemicals‹ STANDARDS INDEX  ELECTRICAL HAZARDS  FIRE HAZARDS   EXPLOSION HAZARDS 1.2 PROTECTION SYSTEMS 1.3 NEC REQUIREMENT FOR ARC FAULT CIRCUIT INTERRUPTION‹ 1.3.1 SECTION 210.12 ARC FAULT CIRCUIT INTERRUPTER PROTECTION 1.1 UNPACKING/INSPECTIONFigure 1.2 - 10kW, V-twin GT-530 Engine 1.4 THE GENERATORFigure 1.1 - 7kW, Single Cylinder GH-410 Engine Figure 1.3 - 13kW and 16kW, V-twin GT-990 EngineSection 1 - General Information 1.5 SPECIFICATIONS‹ 1.5.1 GENERATOR ‹ 1.5.2 ENGINEDANGER 1.6 SYSTEM SET LED1.7 FUEL REQUIREMENTS AND RECOMMENDATIONS 1.8 FUEL CONSUMPTIONFigure 1.4 - Demand Regulator 1.9 RECONFIGURING THE FUEL SYSTEM‹ 1.9.1 7 KW, 410CC ENGINE ‹ 1.9.2 10, 13 AND 16KW, V-TWIN ENGINESFigure 1.6 - 10kW, GT-530 Inlet Hose Slid Back 1.10 LOCATION‹ 1.10.1 GENERATOR Figure 1.5 - 10kW, GT-530 Inlet Hose Slid Back1.10.2.1 7, 10, 13, and 16 kW Units if equipped 1.11 BATTERY REQUIREMENTS1.12 BATTERY INSTALLATION ‹ 1.10.2 TRANSFER SWITCHSection 1 - General Information 1.13 THE BATTERYFigure 1.10 - Battery Cable Connections DANGER2.3 ELECTRICAL CHECKS 2.2 CHECK TRANSFER SWITCH OPERATIONSection 2 - Post Installation Start-up and Adjustments 2.1 BEFORE INITIAL START-UP7KW NATURAL GAS ONLY 2.6 ADJUSTING THE FUEL REGULATOR2.4 GENERATOR TESTS UNDER LOAD 2.5 CHECKING AUTOMATIC OPERATIONFigure 2.1 - 7kW Fuel Regulator 2.7 ENGINE GOVERNOR ADJUSTMENTFigure 2.2 - Engine Governor Adjustment Single Cylinder Engines ‹ 2.7.1 7 KW UNITS‹ 2.7.2 13 KW AND 16 KW UNITS 2.8 VOLTAGE REGULATOR ADJUSTMENTFigure 2.3 - Voltage Adjustment Potentiometer Turn to adjust voltage3.4 MANUAL TRANSFER OPERATION ‹ 3.4.1 TRANSFER TO GENERATOR POWER SOURCE3.2 AUTOMATIC TRANSFER OPERATION 3.3 SEQUENCE OF AUTOMATIC OPERATIONDANGER 3.5 SETTING THE EXERCISE TIMER‹ 3.4.2 TRANSFER BACK TO UTILITY POWER SOURCE Figure 3.2 - Manual Transfer Switch OperationLow Oil Switch ‹ 3.6.1 LOW OIL PRESSURE SWITCH‹ 3.6.2 HIGH TEMPERATURE SWITCH High Temperature Switches4.1 FUSES ‹ 3.6.6 LOW BATTERYSection 4 - Maintenance 4.2 CHECKING THE ENGINE OIL LEVEL‹ 4.3.2 ENGINE OIL RECOMMENDATIONS ‹ 4.3.3 OIL & OIL FILTER CHANGE PROCEDURE4.3 CHANGING THE ENGINE OIL ‹ 4.3.1 OIL CHANGE INTERVALSAir Cleaner 4.4 CHANGING THE ENGINE AIR CLEANERFigure 4.7 - 10kW Engine Air Cleaner Figure 4.6 - 7 kW, Engine Air Cleaner LocationSection 4 - Maintenance 4.6 BATTERY MAINTENANCE4.7 ADJUSTING GH-410/GT-530/990 VALVE CLEARANCE Figure 4.9 - Setting the Spark Plug GapFigure 4.11 - Cooling Vent Locations Figure 4.10 - Valve Clearance Adjustment4.8 COOLING SYSTEM 4.9 ATTENTION AFTER SUBMERSION4.10 CORROSION PROTECTION 4.11 OUT OF SERVICE PROCEDURE‹ 4.11.2 RETURN TO SERVICE ‹ 4.11.1 REMOVAL FROM SERVICEbe performed by the nearest Authorized Dealer 4.12 SERVICE SCHEDULEATTENTION It is recommended that all service work Section 4 - MaintenanceCause 5.1 TROUBLESHOOTING GUIDEProblem Section 5 - TroubleshootingAir-cooled Generators Section 6 - NotesAir-cooled Generators Section 6 - NotesAir-cooled Generators Section 6 - NotesAir-cooled Generators Drawing No. 0F9424 Section 7 - Mounting DimensionsC1-UTILITY COIL & RECTIFIER C2-GENERATOR COIL & RECTIFIER Section 8 - Electrical DataTS-TERMINAL STRIP XA,XB-LIMIT SWITCHES ATS-AUTOMATIC TRANSFER SWITCHAir-cooled Generators Wiring Diagram - 10, 13 & 16kW, V-Twin - Drawing No. 0F7822ENGINE WIRING Section 8 - Electrical DataCLOSEST TO BEARING Section 8 - Electrical DataCONTROL PANEL BOX CUSTOMER CONNECTIONELECTRONIC Electrical Schematic - 10, 13 & 16kW, V-Twin - Drawing No. 0F7823Section 8 - Electrical Data Air-cooled GeneratorsSection 8 - Electrical Data ENGINE AND ALTERNATORAir-cooled Generators Wiring Diagram - 7kW, Single Cylinder - Drawing No. 0F7820ENGINE WIRING Section 8 - Electrical DataCONTROL PANEL BOX Wiring Diagram - 7kW, Single Cylinder - Drawing No. 0F7820Section 8 - Electrical Data Air-cooled GeneratorsSection 8 - Electrical Data Electrical Schematic - 7kW, Single Cylinder - Drawing No. 0F7821Air-cooled Generators Air-cooled Generators Electrical Schematic - 7kW, Single Cylinder - Drawing No. 0F7821ENGINE AND ALTERNATOR Section 8 - Electrical DataAir-cooled Generators Section 8 - Electrical DataSection 8 - Electrical Data Material Section 9 - Exploded Views and Parts ListsSHEET METAL PAINT/MATERIAL CODE LEGEND Air-cooled Generators Enclosure - Drawing No. 0F9431-CAir-cooled Generators PART NO. QTY. DESCRIPTIONSection 9 - Exploded Views and Parts Lists PART NO. QTY. DESCRIPTIONAir-cooled Generators Control Panel - Drawing No. 0F9695-C Section 9 - Exploded Views and Parts ListsDESCRIPTION DESCRIPTIONSection 9 - Exploded Views and Parts Lists ASSEMBLY, BATTERY CHARGER ENGINEAir-cooled Generators Transfer Switch Assembly - Drawing No. 0F9774-A Section 9 - Exploded Views and Parts ListsPART NO. QTY. DESCRIPTION Section 9 - Exploded Views and Parts ListsTransfer Switch Assembly - Drawing No. 0F9774-A PART NO. QTY. DESCRIPTIONAir-cooled Generators Section 9 - Exploded Views and Parts Lists13 & 16kW, GT-990 Engine - Drawing No. 0F9430-E - Part Air-cooled Generators Section 9 - Exploded Views and Parts ListsDESCRIPTION DESCRIPTIONAir-cooled Generators Section 9 - Exploded Views and Parts Lists13 & 16kW, GT-990 Engine - Drawing No. 0F9430-E - Part Air-cooled Generators Section 9 - Exploded Views and Parts ListsDESCRIPTION DESCRIPTIONAir-cooled Generators Section 9 - Exploded Views and Parts Lists10kW, GT-530 Engine - Drawing No. 0F9429-D - Part 10kW, GT-530 Engine - Drawing No. 0F9429-D - Part Section 9 - Exploded Views and Parts ListsDESCRIPTION Air-cooled GeneratorsAir-cooled Generators Section 9 - Exploded Views and Parts Lists10kW, GT-530 Engine - Drawing No. 0F9429-D - Part Air-cooled Generators Section 9 - Exploded Views and Parts ListsDESCRIPTION DESCRIPTIONAir-cooled Generators 7kW, GN-410 Engine - Drawing No. 0F9428 - Part Section 9 - Exploded Views and Parts Lists7kW, GN-410 Engine - Drawing No. 0F9428 - Part Section 9 - Exploded Views and Parts ListsDESCRIPTION Air-cooled GeneratorsAir-cooled Generators 7kW, GN-410 Engine - Drawing No. 0F9428 - Part Section 9 - Exploded Views and Parts Lists7kW, GN-410 Engine - Drawing No. 0F9428 - Part Section 9 - Exploded Views and Parts ListsDESCRIPTION Air-cooled GeneratorsAir-cooled Generators 7kW, GN-410 Engine - Drawing No. 0F9422-B Section 9 - Exploded Views and Parts Lists7kW, GN-410 Engine - Drawing No. 0F9422-B Section 9 - Exploded Views and Parts ListsDESCRIPTION Air-cooled GeneratorsAir-cooled Generators Section 9 - Exploded Views and Parts Lists10, 13, and 16kW, V-twin Generators - Drawing No. 0F9423-C Air-cooled Generators Section 9 - Exploded Views and Parts ListsDESCRIPTION DESCRIPTIONAir-cooled Generators Section 9 - Exploded Views and Parts Lists7 & 10kW, GN-410/GT-530 Regulator - Drawing No. 0F9425 7 & 10kW, GN-410/GT-530 Regulator - Drawing No. 0F9425 Section 9 - Exploded Views and Parts ListsDESCRIPTION Air-cooled GeneratorsAir-cooled Generators Section 9 - Exploded Views and Parts Lists13 & 16kW, GT-990 Regulator - Drawing No. 0F9426 13 & 16kW, GT-990 Regulator - Drawing No. 0F9426 Section 9 - Exploded Views and Parts ListsDESCRIPTION Air-cooled GeneratorsSection 10 - Warranty YOUR WARRANTY RIGHTS AND OBLIGATIONSMANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGE PURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIESAir-cooled Generators EMISSION CONTROL SYSTEM WARRANTYEMISSION RELATED PARTS INCLUDE THE FOLLOWING Section 10 - WarrantyWARRANTY SCHEDULE GENERAC POWER SYSTEMS STANDARD LIMITED WARRANTY FORHOME STANDBY/LIGHT COMMERCIAL PRODUCT 45kW AND BELOW Section 10 - Warranty