Introduction Inside Front Cover, Operation

Table of Contents

Generac Air-cooled 7 kW, 12 kW and 15 kW Generators

Introduction	Inside Front Cover
Read This Manual Thoroughly		IFC
Contents		IFC
Operation and Maintenance	............................	IFC
How to Obtain Service		IFC
Authorized Dealer Locator Number		IFC

Safety Rules			2
Standards Index			3
Section 1 – General Information			4
1.1	Unpacking/Inspection		4
1.2	Protection Systems		4
1.3	System Set LED		4
1.4	Your Generator		5
1.5	Specifications		6
	1.5.1	Generator	6
	1.5.2	Engine	6
1.6	Fuel Requirements and Recommendations....		7
1.7	Fuel Consumption		7
1.8	Reconfiguring the Fuel System		7
	1.8.1	7 kW, 410CC	7
	1.8.2 12 kW and 15 kW, 990cc Engines		7
1.9	Location		8
	1.9.1	Generator	8
	1.9.2	Transfer Switch	8
1.10	Battery Installation		9
1.11	The Battery		9
Section 2 – Post Installation Start-up
		and Adjustments	10
2.1	Before Initial Start-up		10
2.2	Check Transfer Switch Operation		10
2.3	Electrical Checks		10
2.4	Generator Tests Under Load		11
2.5	Checking Automatic Operation		11

2.6Adjusting the Regulator (Natural Gas Only) ..12

2.7	Engine Governor Adjustment		12
	2.7.1	7 kW Units	12
	2.7.2 12 kW and 15 kW Units		13
	2.7.3	Additional Corrosion Protection	13
2.8	Voltage Regulator Adjustment		13
Section 3 – Operation			14
3.1	Break-in Procedure		14
3.2	Using the Auto/Off/Manual Switch		14
	3.2.1	“Auto” Position	14

	3.2.2	“Off” Position	14
	3.2.3	“Manual” Position	14
3.3	Automatic Transfer Operation		14
3.4	Sequence of Automatic Operation		14
3.5	Manual Transfer Operation		15
	3.5.1	Transfer to Generator
		Power Source	15
	3.5.2 Transfer Back to Utility
		Power Source	15
3.6	Setting the Exercise Timer		16
3.7	Protection Systems		16
	3.7.1 Low Oil Pressure Switch		16
	3.7.2	High Temperature Switch	16
	3.7.3	Overcrank	16
	3.7.4	Overspeed	17

Section 4 – Maintenance			17
4.1	Fuse	............................................................	17
4.2	Checking the Engine Oil Level		17
4.3	Changing the Engine Oil		17
	4.3.1	Engine Oil Recommendations	17
	4.3.2	Oil Change Procedure	18
4.4	Changing the Oil Filter		18
4.5	Changing the Engine Air Cleaner		18
	4.5.1 7 kW, 12 kW and 15 kW
		Generators	18
4.6	Spark Plug(s)		19
4.7	Battery Maintenance		19
4.8	Adjusting Valve Clearance		20
4.9	Cooling System		20
4.10	Attention After Submersion		21
4.11	Corrosion Protection		21
4.12	Out of Service Procedure		21
	4.12.1 Removal From Service		21
	4.12.2 Return to Service		21
4.13	Service Schedule		22
Section 5 – Troubleshooting			23
5.1	Troubleshooting Guide		23
Section 6 – Electrical Data			24
Section 7 – Exploded Views and
		Parts Lists	32
Section 8 – Mounting Dimensions			50
Section 9 – Notes			51
Section 10 – Warranty			52
		Generac® Power Systems, Inc.	1

04674-2, 04675-3, 04673-2 specifications

Generac, a prominent name in the power equipment sector, offers a range of reliable and efficient energy solutions, including the models Generac 04673-2, 04675-3, and 04674-2. These models are designed to meet diverse consumer needs, from residential applications to larger commercial setups, providing dependable backup power during outages.

The Generac 04673-2 is a standout home standby generator specifically engineered for residential use. It boasts an automatic operation feature, ensuring that power is restored within seconds of an outage. This model operates on a robust Generac engine, delivering a reliable power output that can support essential household appliances and systems, including HVAC units, refrigerators, and sump pumps. One of the main characteristics of this generator is its Quiet Test mode, which runs at a lower RPM to minimize noise while conducting weekly self-tests, ensuring that the system is always ready when needed.

Moving on to the Generac 04675-3, this model offers enhanced features tailored for users needing higher power output. With a larger capacity, it can handle more demanding power needs, making it suitable for larger homes or small businesses. The 04675-3 is equipped with advanced technologies, including the Mobile Link™ remote monitoring system, which enables users to check the status and performance of their generator from anywhere using a smartphone or computer. This connectivity empowers users with real-time information and alerts regarding their generator's operational performance.

The Generac 04674-2 model rounds out the trio, engineered for those who need a powerful standby generator with a slightly different configuration. It features the same robust engine as the other models, ensuring reliability and user-friendly operation. Its standout feature is the integrated transfer switch capability, which allows for seamless transfer of power from the grid to the generator without manual intervention. This model also supports various fuel types, providing flexibility depending on user preference and availability.

All three Generac models focus on safety and efficiency, incorporating features such as excellent ventilation systems, all-weather enclosures, and user-friendly control panels. They are designed for low maintenance, ensuring long-lasting performance without extensive upkeep. With Generac's commitment to innovation and quality, these generators offer peace of mind, enabling users to maintain their lifestyles and operations without interruption during power outages. Whether for home or business use, the Generac 04673-2, 04675-3, and 04674-2 models represent a reliable choice in emergency power solutions.

Introduction

Inside Front Cover

Section 1 – General Information

Section 2 – Post Installation Start-up

and Adjustments

Section 3 – Operation

Section 4 – Maintenance

Section 5 – Troubleshooting

04674-2, 04675-3, 04673-2 specifications